CN117165060B - Special modified material for polycarbonate and preparation method thereof - Google Patents
Special modified material for polycarbonate and preparation method thereof Download PDFInfo
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- CN117165060B CN117165060B CN202311155430.6A CN202311155430A CN117165060B CN 117165060 B CN117165060 B CN 117165060B CN 202311155430 A CN202311155430 A CN 202311155430A CN 117165060 B CN117165060 B CN 117165060B
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- 239000004417 polycarbonate Substances 0.000 title claims abstract description 76
- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 74
- 239000000463 material Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 229910010413 TiO 2 Inorganic materials 0.000 claims abstract description 92
- 239000000049 pigment Substances 0.000 claims abstract description 61
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 26
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 26
- 229940079889 pyrrolidonecarboxylic acid Drugs 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 21
- ODHCTXKNWHHXJC-VKHMYHEASA-N 5-oxo-L-proline Chemical compound OC(=O)[C@@H]1CCC(=O)N1 ODHCTXKNWHHXJC-VKHMYHEASA-N 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 14
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 110
- 239000007788 liquid Substances 0.000 claims description 69
- 239000005060 rubber Substances 0.000 claims description 58
- 238000007789 sealing Methods 0.000 claims description 40
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims description 34
- 238000003825 pressing Methods 0.000 claims description 31
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000011259 mixed solution Substances 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 11
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 10
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 6
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 claims description 5
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 230000005489 elastic deformation Effects 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 210000005056 cell body Anatomy 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- -1 pyrrolidone carboxylic acid compound Chemical class 0.000 claims description 3
- 125000003003 spiro group Chemical group 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000003945 anionic surfactant Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims 1
- 230000004048 modification Effects 0.000 abstract description 16
- 238000012986 modification Methods 0.000 abstract description 16
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- 230000015556 catabolic process Effects 0.000 abstract description 10
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- 239000000155 melt Substances 0.000 abstract description 6
- 230000003197 catalytic effect Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 238000003421 catalytic decomposition reaction Methods 0.000 abstract description 3
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- 229920003023 plastic Polymers 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- 239000012994 photoredox catalyst Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- 238000007334 copolymerization reaction Methods 0.000 description 7
- 238000004383 yellowing Methods 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
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- 238000010309 melting process Methods 0.000 description 2
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- 239000000047 product Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
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- 238000000354 decomposition reaction Methods 0.000 description 1
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- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
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- 239000002952 polymeric resin Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
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Abstract
The invention relates to the technical field of plastic modification processing, in particular to a modified material special for polycarbonate and a preparation method thereof, comprising the following components in percentage by mass: 55.0 to 70.0wt.% of TiO 2 pigment of polyvinylpyrrolidone/pyrrolidone carboxylic acid composite coating, 28.0 to 44.0wt.% of siloxane random copolycarbonate and 1.0 to 2.0wt.% of lubricant; the beneficial effects are as follows: aiming at the catalytic degradation problem in the melt blending modification process of the current TiO 2 pigment and PC, the special modified polycarbonate material and the preparation method thereof provided by the invention adopt PCA capable of generating special effect inhibition on the catalytic decomposition of TiO 2 to carry out surface coating modification on TiO 2 pigment particles, thereby playing a role of effectively preventing PC degradation compared with other organic or inorganic coatings.
Description
Technical Field
The invention relates to the field of plastic modification processing, in particular to a special modified material for polycarbonate and a preparation method thereof.
Background
Polycarbonate (PC) is an odorless, nontoxic and transparent amorphous thermoplastic polymer resin, and is used as engineering plastic due to the excellent mechanical, thermal and electrical properties, especially the characteristics of impact resistance, high strength, small creep, stable product size and the like; titanium dioxide (TiO 2) is commonly called as 'titanium dioxide', is an important inorganic chemical white pigment, is also the most commonly used modification auxiliary agent for PC resin, and can obtain white color and excellent glossiness by utilizing the PC modified by titanium dioxide, and can also improve the ultraviolet light resistance of the PC.
In the prior art, a great deal of research is carried out on the problem in China to strive for the difficulty, and some progress is also made. For example, chinese patent CN201711188801.5 discloses a technology for preparing a special TiO 2 pigment for PC, which comprises coating with silicate, coating with aluminum salt for the second time, and surface treating with silane coupling agent; the compatibility of the modified TiO 2 with PC resin is obviously improved, and the yellowing phenomenon is weakened. The Chinese patent 20211139066.3 also discloses a special TiO 2 pigment for PC and a preparation method thereof, wherein TiO 2, sodium lignin sulfonate and polysiloxane with equal mass percent are extruded and granulated by a double screw extruder to obtain the polymer coated TiO 2 pigment, so that the contact between the polymer coated TiO 2 pigment and PC is reduced in the blending process. The Chinese patent 202211479647.8 discloses a preparation technology of an organic coated PC special TiO 2 pigment, which adopts polyorganosiloxane as a coating material, and forms a layer of polymer protective film on the surface of the TiO 2 pigment in a spray mode, so that the method effectively prevents the decomposition phenomenon of the TiO 2 pigment in melt blending with the PC.
However, the above method does not fully prevent the TiO 2 pigment from contacting the surface of the PC during the melting process, and still results in partial degradation of the PC during use. Therefore, there is an urgent need to develop a modification technology capable of effectively preventing the catalytic degradation of the TiO 2 pigment to PC, so that the important chemical pigment can be normally applied to the modification of PC resin.
Disclosure of Invention
The invention aims to provide a modified material special for polycarbonate and a preparation method thereof, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the modified material special for the polycarbonate comprises the following components in percentage by mass: 55.0 to 70.0wt.% of TiO 2 pigment with a polyvinylpyrrolidone/pyrrolidone carboxylic acid composite coating, 28.0 to 44.0wt.% of siloxane random copolycarbonate and 1.0 to 2.0wt.% of lubricant.
Preferably, the silicone random copolycarbonate is a random copolycarbonate having a silicone content of greater than 20 weight percent.
Preferably, the lubricant is any one of pentaerythritol stearate, ethylene-vinyl acetate copolymer wax, ethylene bis stearamide, E wax and OP wax.
A method for preparing a modified material special for polycarbonate, comprising the following steps:
Dispersing TiO 2 pigment in deionized water at normal temperature, adding an anionic surfactant sodium dodecyl sulfate, continuously stirring for 2 hours until the sodium dodecyl sulfate forms an oleophylic template on the surface of TiO 2, then adding an ammonium persulfate initiator, continuously stirring for 30 minutes, heating a TiO 2 pigment dispersion system to 82+/-0.5 ℃ under the condition of maintaining stirring, then dripping a vinyl pyrrolidone/pyrrolidone carboxylic acid mixed solution into the TiO 2 pigment dispersion system in a reaction kettle, dripping the solution within 1 hour, continuously stirring for 2 hours, ending the reaction, washing and filtering, and drying the filtrate to obtain a polyvinyl pyrrolidone/pyrrolidone carboxylic acid compound coated TiO 2 pigment;
Weighing TiO 2 pigment coated with polyvinylpyrrolidone/pyrrolidone carboxylic acid composite coating, siloxane random copolymerization PC and lubricant according to a proportion, and putting the materials into a high-speed mixer for uniform mixing to obtain a primary mixed material;
Feeding the obtained primary mixed material into a double-screw extruder through a conical feeder, and granulating after melt blending extrusion to obtain the PC special TiO 2 functional master batch, wherein the barrel temperature of the double-screw extruder is 240-260 ℃, the screw rotation speed is 300-400 rpm, and the polyvinyl pyrrolidone/pyrrolidone carboxylic acid composite coated TiO 2 pigment is preferable, and the mass percentage of sodium dodecyl sulfate to TiO 2 pigment is 1:
50, the mass percentage of the mixed solution of the vinyl pyrrolidone and the pyrrolidone carboxylic acid is 10:
the mass percentage of the TiO 2 pigment and deionized water is 1:5, the mass percentage of the TiO 2 pigment and the mixed solution of vinyl pyrrolidone/pyrrolidone carboxylic acid is 5:1, the mass percentage of the ammonium persulfate initiator and the vinyl pyrrolidone is 0.5:100, and the stirring speed is 300-500 revolutions per minute.
Preferably, the reaction kettle comprises a connecting handle and a stirring shaft fixed at the bottom end of the connecting handle, the connecting handle is arranged on a driving shaft of the reaction kettle, the connecting handle is a 'convex' cylinder, a liquid collecting tank is arranged on the surface of the connecting handle, a pressing plate is slidably connected in the liquid collecting tank, a sealing ring is fixedly arranged on the surface of the pressing plate, the sealing ring is clamped between the liquid collecting tank and the pressing plate, a liquid dropping hole is formed in the bottom surface of the connecting handle, the liquid dropping hole is communicated with the liquid collecting tank, a sealing head is inserted in the liquid dropping hole, a pushing rod is fixedly arranged at the top end of the sealing head, the pushing rod is fixedly arranged on the bottom surface of the pressing plate, an electric telescopic rod is fixedly arranged on the bottom surface of the connecting handle, a pulling rod penetrates through the bottom plate of the connecting handle and then stretches into the liquid collecting tank, the top end of the pulling rod is fixedly arranged on the bottom surface of the pressing plate, a connecting frame is fixedly arranged on the surface of the stirring shaft, a splicing plate is slidably connected on the surface of the connecting frame, a stirring plate is fixedly arranged on the surface of the stirring shaft, an extending plate is fixedly arranged on the stirring plate, one end of the extending plate is fixedly arranged on the pulling plate, and the handle is fixedly arranged on the surface of the pulling plate.
Preferably, the connecting handle has a top surface provided with a connecting groove, the inner wall of the connecting groove is provided with two embedded grooves which are distributed vertically, the embedded grooves are annular grooves, rubber rings are fixed in the embedded grooves, the rubber rings protrude out of the embedded grooves, the top surface of the connecting handle is provided with two reserved planes which are distributed symmetrically, the surface of each reserved plane is provided with a bolt groove, the surface of each bolt groove is provided with a bolt hole, the bolt holes are communicated with the connecting groove, the surface of each bolt groove is provided with a plurality of embedded grooves, the length of the long side of each embedded groove is smaller than the depth of each bolt hole, bolts are inserted into the bolt holes, the surface of each embedded groove is fixedly provided with a rubber clamping block, the two sides of each rubber clamping block protrude out of each embedded groove, the rubber clamping blocks are fixed on the surface of a gasket, the gasket is an annular plate, the gasket is sleeved on a screw rod of each bolt, and after the bolts are locked, the gasket extrudes the rubber clamping blocks to generate elastic deformation.
Preferably, the liquid collecting tank is an annular groove, the pressing plate is an annular plate structure with an inverted convex section, the sealing ring is fixed on the stepped surface of the pressing plate, the inner annular surface of the pressing plate and the outer annular surface of the pressing plate are both provided with storage grooves, the storage grooves are annular grooves, the two storage grooves are different in size, an elastic rubber ring is fixed in the storage grooves, the elastic rubber ring is in an annular plate-shaped structure, the elastic rubber ring is fixed between the liquid collecting tank and the storage grooves, the surface of the pressing plate is provided with a liquid injection hole, the top surface of the pressing plate is fixed with a liquid injection bucket, the top of the liquid injection bucket is in threaded connection with a plug, the bottom surface of the connecting handle is fixed with two symmetrically distributed mounting frames, and the mounting frames are in a U-shaped plate-shaped structure, the piston rod of the electric telescopic rod penetrates through the bottom plate of the mounting frame, the sleeve ring is sleeved on the shaft body of the stirring shaft, the traction rod is provided with two groups, the traction rod penetrates through the first perforation, the first perforation is arranged on the bottom surface of the liquid collecting tank, the rubber ring is embedded on the surface of the first perforation, the rubber ring is sleeved on the outer side of the traction rod to generate elastic deformation, the sealing head is of a convex cylindrical structure, the top end of the sealing head is integrally formed with a table-shaped block, the table-shaped block is fixed at the bottom end of the push rod, the bottom surface diameter of the sealing head is larger than the aperture of the liquid dropping hole, the side wall of the sealing head is provided with an embedded groove III, the embedded groove III is an annular groove, a rubber plug ring is fixed in the embedded groove III, and after the sealing head is inserted into the liquid dropping hole, the rubber plug ring is clamped between the sealing head and the liquid dropping hole to generate deformation.
Preferably, the link is "匚" font platy structure, the link has two sets of, two sets of links are about the (mixing) shaft symmetric distribution, every group link has a plurality ofly, a plurality of links are upper and lower range distribution, and the stirring board is equipped with a plurality ofly, stirring board and link alternate distribution, be fixed with two handle of a knife between link and the gasket, be fixed with handle of a knife second between two handle of a knife, and the spout has been seted up on the surface of link, assembly board sliding connection is in the spout, assembly board's fixed surface has two limiting plates that are upper and lower distribution, two limiting plates distribute respectively in the upper and lower both sides of stirring board, the one end that the limiting plate kept away from the assembly board is fixed with the elasticity link, the one side that the elasticity link was faced the stirring board is fixed with the card strip, the card strip is right trapezoid, the inclined plane of card strip is faced the (mixing) shaft, the card strip activity is pegged graft in the draw-in groove, the surface at the stirring board is seted up to the draw-in groove, the surface of elastic link is fixed with the pull ring.
Preferably, stirring board and link one-to-one, the stirring board is square frame body structure, all seted up the limit groove on two lateral walls of extension board, the inside in limit groove is fixed with the rubber pad, the surface spiro union of stirring board has the centre gripping screw rod, the centre gripping screw rod stretches into the centre gripping rubber pad in the cell body of stirring board, the handle of a knife is three to be equipped with two sets of, two sets of handle of a knife are three about the extension board and are upper and lower symmetric distribution, the one end sliding connection of handle of a knife is three in assembling the groove, assemble the groove and set up the surface at the stirring board, the locating hole has all been seted up on the lateral wall of two parallel distribution of spout, the inside activity grafting of locating hole has the rubber arch, the rubber arch is fixed at the surface of assembling the board.
Compared with the prior art, the invention has the beneficial effects that:
Aiming at the catalytic degradation problem in the melt blending modification process of the current TiO 2 pigment and PC, the special modified polycarbonate material and the preparation method thereof adopt PCA capable of generating special effect inhibition on the catalytic decomposition of TiO 2 to carry out surface coating modification on TiO 2 pigment particles, thereby playing a role of effectively preventing PC degradation compared with other organic or inorganic coatings; in the surface modification process of the TiO 2 pigment, PVP is used as a matrix polymer to combine with PCA to carry out in-situ polymerization coating on the TiO 2 pigment particles, so that a compact and solid coating protective layer can be formed, wherein the PCA and PVP serving as active ingredients have good compatibility, and the in-situ polymerization is firmly embedded into the PVP matrix layer, so that the PC catalytic decomposition is durably inhibited in the melt blending processing process of the TiO 2 pigment on PC.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure A in FIG. 1;
FIG. 3 is a schematic diagram of a semi-sectional structure of the present invention;
FIG. 4 is an enlarged schematic view of the structure shown at B in FIG. 3;
FIG. 5 is a schematic diagram of a semi-sectional structure of the second embodiment of the present invention;
FIG. 6 is an enlarged schematic view of the structure at C in FIG. 5;
FIG. 7 is an enlarged schematic view of the structure shown at D in FIG. 5;
FIG. 8 is an enlarged schematic view of the structure of FIG. 6 at E;
FIG. 9 is a schematic view of the connection structure of the assembling plate and the stirring plate of the invention;
FIG. 10 is an enlarged schematic view of the structure shown at F in FIG. 9;
FIG. 11 is an enlarged schematic view of the structure at G in FIG. 9;
FIG. 12 is a schematic view in semi-section of the connection structure of the stirring plate and the extension plate of the present invention;
FIG. 13 is an enlarged schematic view of the structure at H in FIG. 12;
FIG. 14 is a schematic view of the connection of the connecting handle and the stirring shaft according to the present invention;
fig. 15 is a schematic view of a structure of a connecting frame according to the present invention.
In the figure: the stirring device comprises a connecting handle 1, a stirring shaft 2, a connecting groove 3, an embedded groove I4, a rubber ring 5, a reserved plane 6, a bolt groove 7, a bolt hole 8, a bolt 9, an embedded groove II 10, a rubber clamping block 11, a gasket 12, a liquid collecting groove 13, a pressing plate 14, a containing groove 15, an elastic rubber ring 16, a sealing ring 17, a liquid dropping hole 18, a sealing head 19, an embedded groove III 20, a rubber ring 21, a perforation I22, a traction rod 23, a lantern ring 24, an electric telescopic rod 25, a mounting frame 26, a connecting frame 27, a knife handle I28, a knife handle II 29, a sliding groove 30, a stirring plate 31, an assembling plate 32, a limiting plate 33, an elastic hanging plate 34, a clamping bar 35, a clamping groove 36, a pull ring 37, a stirring plate 38, an extending plate 39, a pulling plate 40, a knife handle III 41, an assembling groove 42, a side groove 43, a rubber pad 44, a clamping screw 45, a positioning hole 46, a rubber bulge 47, a push rod 48, a liquid injection hole 49, a liquid injection bucket 50 and a plug 51.
Detailed Description
In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
Example 1
The preparation method of the TiO 2 functional master batch special for PC comprises the following steps of:
Dispersing 10kg of TiO 2 pigment in 25L of deionized water, then adding 200g of SDS and stirring for 2 hours until the SDS forms a lipophilic template on the surface of TiO 2, and then adding 4.5g of ammonium persulfate initiator and stirring for 30 minutes; in a separate vessel, 1kg of a vinylpyrrolidone/PCA mixture was placed, wherein PVP had a mass of 900g and PCA had a mass of 100g; heating the TiO 2 pigment dispersion liquid to 82+/-0.5 ℃ under the condition of continuous stirring, dropwise adding the mixed solution of the vinyl pyrrolidone and the PCA into the TiO 2 pigment dispersion system, finishing the reaction after the continuous stirring for 2 hours, washing and filtering, and drying the filtrate to obtain the PVP/PCA composite coated TiO 2 pigment. In the reaction process, the stirring rotation speed is always maintained at 300-500 rpm.
The preparation method of the TiO 2 functional master batch special for the PC comprises the following steps:
5.5kg of PVP/PCA composite coated TiO 2 pigment, 4.4kg of silicone random copolycarbonate and 0.1kg of pentaerythritol stearate
Weighing 5.5kg of PVP/PCA composite coated TiO 2 pigment, 4.4kg of siloxane random copolymerization PC and 0.1kg of pentaerythritol stearate lubricant according to a proportion by the connecting handle 1, and putting the materials into a high-speed mixer for uniformly mixing to obtain a primary mixed material;
And (3) feeding the primary mixed material obtained in the step (1) into a double-screw extruder through a conical feeder by a stirring shaft (2), and granulating after melt blending extrusion to obtain the PC special TiO 2 functional master batch, wherein the barrel temperature of the double-screw extruder is 240-260 ℃ and the screw rotating speed is 300 revolutions per minute.
Example 2
A preparation method of a TiO 2 functional master batch special for PC, and a preparation method of a PVP/PCA composite coated TiO 2 pigment is the same as that of example 1.
The preparation method of the TiO 2 functional master batch special for the PC comprises the following steps:
weighing 5.8kg of PVP/PCA composite coated TiO 2 pigment, 4.05kg of siloxane random copolymerization PC and 0.15kg of ethylene bis stearamide lubricant according to the proportion by the connecting handle 1, and putting the materials into a high-speed mixer for uniformly mixing to obtain a primary mixed material;
And (3) feeding the primary mixed material obtained in the step (1) into a double-screw extruder through a conical feeder by a stirring shaft (2), and granulating after melt blending extrusion to obtain the PC special TiO 2 functional master batch, wherein the barrel temperature of the double-screw extruder is 240-260 ℃, and the screw rotating speed is 350 revolutions per minute.
Example 3
A preparation method of a TiO 2 functional master batch special for PC, and a preparation method of a PVP/PCA composite coated TiO 2 pigment is the same as that of example 1.
The preparation method of the TiO 2 functional master batch special for the PC comprises the following steps:
Weighing 6.0kg of PVP/PCA composite coated TiO 2 pigment, 3.8kg of siloxane random copolymerization PC and 0.2kg of ethylene-vinyl acetate copolymer wax lubricant according to a proportion by the connecting handle 1, and putting the materials into a high-speed mixer for uniformly mixing to obtain a primary mixed material;
And (3) feeding the primary mixed material obtained in the step (1) into a double-screw extruder through a conical feeder by a stirring shaft (2), and granulating after melt blending extrusion to obtain the PC special TiO 2 functional master batch, wherein the barrel temperature of the double-screw extruder is 240-260 ℃, and the screw rotating speed is 400 rpm.
Example 4
A preparation method of a TiO 2 functional master batch special for PC, and a preparation method of a PVP/PCA composite coated TiO 2 pigment is the same as that of example 1.
The preparation method of the TiO 2 functional master batch special for the PC comprises the following steps:
Weighing 6.4kg of PVP/PCA composite coated TiO 2 pigment, 3.4kg of siloxane random copolymerization PC and 0.2kg of OP wax lubricant according to a proportion by the connecting handle 1, and putting the materials into a high-speed mixer for uniformly mixing to obtain a primary mixed material;
And (3) feeding the primary mixed material obtained in the step (1) into a double-screw extruder through a conical feeder by a stirring shaft (2), and granulating after melt blending extrusion to obtain the PC special TiO 2 functional master batch, wherein the barrel temperature of the double-screw extruder is 240-260 ℃, and the screw rotating speed is 350 revolutions per minute.
Example 5
A preparation method of a TiO 2 functional master batch special for PC, and a preparation method of a PVP/PCA composite coated TiO 2 pigment is the same as that of example 1.
The preparation method of the TiO 2 functional master batch special for the PC comprises the following steps:
weighing 6.8kg of PVP/PCA composite coated TiO 2 pigment, 3.05kg of siloxane random copolymerization PC and 0.15kg of E wax lubricant according to a proportion by the connecting handle 1, and putting the materials into a high-speed mixer for uniformly mixing to obtain a primary mixed material;
And (3) feeding the primary mixed material obtained in the step (1) into a double-screw extruder through a conical feeder by a stirring shaft (2), and granulating after melt blending extrusion to obtain the PC special TiO 2 functional master batch, wherein the barrel temperature of the double-screw extruder is 240-260 ℃ and the screw rotating speed is 300 revolutions per minute.
Example 6
A preparation method of a TiO 2 functional master batch special for PC, and a preparation method of a PVP/PCA composite coated TiO 2 pigment is the same as that of example 1.
The preparation method of the TiO 2 functional master batch special for the PC comprises the following steps:
The method comprises the steps of weighing 7.0kg of PVP/PCA composite coated TiO 2 pigment, 2.8kg of siloxane random copolymerization PC and 0.2kg of pentaerythritol stearate lubricant according to a proportion by a connecting handle 1, and putting the materials into a high-speed mixer for uniformly mixing to obtain a primary mixed material;
And (3) feeding the primary mixed material obtained in the step (1) into a double-screw extruder through a conical feeder by a stirring shaft (2), and granulating after melt blending extrusion to obtain the PC special TiO 2 functional master batch, wherein the barrel temperature of the double-screw extruder is 240-260 ℃, and the screw rotating speed is 400 rpm.
In order to verify the degradation resistance effect of the PC special TiO 2 functional master batch prepared by the invention on PC after melt blending modification, the TiO 2 functional master batch prepared by examples 1-6 is mixed with PC resin according to the mass percent of 5wt.%, and is subjected to blending extrusion molding by a twin-screw extruder to obtain a material, the melt index of the material is tested according to GB/T3682-2000 standard, then the material is injected to impact test a spline and a disc, the cantilever notch impact strength of the material is tested according to GB/T1843-2008 standard, and the yellowing index of the material is tested according to GB/T39822-2021 standard. Meanwhile, according to the same mass percent (i.e., 2.25 wt%) of TiO 2 pigment as the functional master batch obtained in example 1, tiO 2 pigment without any surface modification was added to PC resin, melt blending extrusion granulation was performed, the obtained modified material was designated as a control, while pure PC resin was designated as a blank, and both were subjected to melt index, yellowing index and notched impact strength test. The results obtained are shown in Table 1.
Table 1 shows the performance of PC compound modified by the PC-specific TiO 2 functional master batch prepared in examples 1-6, and the comparison of the comparison with the comparison and blank examples
The reference of the data in table 1 shows that under the condition that the mass ratio content of the TiO 2 pigment is almost the same, the PC compound modified by the special TiO 2 functional master batch prepared by the embodiment of the invention has obviously better melt index, yellowing resistance and notch impact strength than the PC compound directly added with the TiO 2 pigment without surface modification, and is almost equivalent to the pure PC resin without adding any TiO 2 pigment. From the results of the comparative examples, the adopted TiO 2 pigment is not subjected to surface modification, so that the PC resin is subjected to molecular chain degradation in the melt blending process, and the melt index and the notch impact strength are greatly reduced, and the yellowing index is obviously improved. Therefore, the TiO 2 functional master batch special for PC can effectively prevent the TiO 2 pigment from catalytic degradation in the PC melting process, greatly improve the degradation resistance of PC resin, effectively overcome the defect of poor yellowing resistance of the TiO 2 modified PC, improve the mechanical property of the modified PC composite material, improve the appearance quality of the product, and simultaneously realize the sustainable development concept of plastic modification green processing.
Example 7
Referring to fig. 1,3 and 5, in order to realize the process of stirring materials, continuously dripping a mixed solution of vinyl pyrrolidone and pyrrolidone carboxylic acid into the materials by stirring the materials in an axial direction; proposed is: the reaction kettle comprises a connecting handle 1 and a stirring shaft 2 fixed at the bottom end of the connecting handle 1, the connecting handle 1 is arranged on a driving shaft of the reaction kettle, the connecting handle 1 is a 'convex' cylinder, a liquid collecting tank 13 is arranged on the surface of the connecting handle 1, a pressing plate 14 is connected in a sliding manner in the liquid collecting tank 13, a sealing ring 17 is fixed on the surface of the pressing plate 14, the sealing ring 17 is clamped between the liquid collecting tank 13 and the pressing plate 14, a liquid dropping hole 18 is arranged on the bottom surface of the connecting handle 1, the liquid dropping hole 18 is communicated with the liquid collecting tank 13, a sealing head 19 is inserted into the liquid dropping hole 18, a push rod 48 is fixed at the top end of the sealing head 19, the push rod 48 is fixed on the bottom surface of the pressing plate 14, an electric telescopic rod 25 is fixed on the surface of a lantern ring 24, a traction rod 23 is fixed on the surface of the connecting handle 1, the traction rod 23 penetrates through the bottom plate of the connecting handle 1 and then stretches into the liquid collecting tank 13, the top end of the traction rod 23 is fixed on the bottom surface of the pressing plate 14, a connecting frame 27 is fixed on the surface of the stirring shaft 2, a splicing plate 32 is connected in a sliding manner on the surface of the connecting frame 27, a stirring shaft 31 is fixed on the surface of the stirring shaft 2, a stirring rod is fixed on the stirring rod 38, a stirring rod is fixed on the surface of the stirring rod is fixed on the stirring rod 40, and a stirring rod is fixed on the stirring rod 40.
After the connecting handle 1 is fixed on a driving shaft of the reaction kettle, the connecting handle 1 and the stirring shaft 2 synchronously rotate along with the driving shaft, before the connecting handle 1 is installed, a vinyl pyrrolidone/pyrrolidone carboxylic acid mixed solution is injected into the liquid collecting tank 13, when the stirring shaft 2 rotates along with the driving shaft, a switch of an electric telescopic rod 25 is triggered, a piston rod of the electric telescopic rod 25 stretches, a lantern ring 24 is pushed to move along the stirring shaft 2, in the process, the lantern ring 24 pulls a pressing plate 14 to move along the liquid collecting tank 13 through a traction rod 23, the pressing plate 14 drives a push rod 48 to push a sealing head 19 out of a liquid dropping hole 18, and then the vinyl pyrrolidone/pyrrolidone carboxylic acid mixed solution in the liquid collecting tank 13 is dropped into the reaction kettle from the liquid dropping hole 18; according to the barrel diameter of the reaction kettle, the length of the extension plate 39 extending out of the stirring plate 38 is adjusted, the stirring plate 38 is fixed on the assembling plate 32, and the assembling plate 32 is of a selective structure, namely, the assembling plates 32 with different numbers are installed on the stirring shaft 2.
Example 8
Referring to fig. 4, on the basis of embodiment 7, in order to fix the connection handle 1 on the driving shaft of the reaction kettle, the top surface of the connection handle 1 is provided with a connection groove 3, the inner wall of the connection groove 3 is provided with two embedded grooves 4 which are distributed vertically, the embedded grooves 4 are annular grooves, the inner part of the embedded grooves 4 is fixedly provided with a rubber ring 5, the rubber ring 5 protrudes out of the embedded grooves 4, the top surface of the connection handle 1 is provided with two reserved planes 6 which are symmetrically distributed, the surface of the reserved planes 6 is provided with bolt grooves 7, the surface of the bolt grooves 7 is provided with bolt holes 8, the bolt holes 8 are communicated with the connection groove 3, the surface of the bolt grooves 7 is provided with a plurality of embedded grooves 10, the length of the long sides of the embedded grooves 10 is smaller than the depth of the bolt holes 8, the inner part of the bolt holes 8 is inserted with bolts 9, the surface of the embedded grooves 10 is fixedly provided with rubber clamping blocks 11, the rubber clamping blocks 11 are provided with two sides which are respectively protruded out of the embedded grooves 10, the rubber clamping blocks 11 are fixedly arranged on the surface of the gaskets 12, the gaskets 12 are annular plates, the gaskets 12 are sleeved on the screw rods of the bolts 9, and after the gaskets 12 are pressed and the gaskets 12 are elastically deformed.
Punching holes are formed in the bottom end of a driving shaft of the reaction kettle in advance, the holes are punched to enable bolts 9 to pass through, connecting grooves 3 are sleeved at the bottom end of the driving shaft, a connecting handle 1 is stirred to rotate around the driving shaft, the positions of the connecting handles 1 are adjusted, bolt holes 8 are opposite to the holes, then bolts 9 sequentially pass through the holes of the bolt holes 8 and are locked, a corresponding gasket 12 is extruded by a plate body and a nut at the end of a screw rod of each bolt 9 respectively in the locking process of the bolts 9, rubber clamping blocks 11 are extruded into embedded grooves II 10 by the gasket 12, elastic deformation is generated by the embedded grooves II 10 at the moment, the gasket 12 is propped against the elastic force of the embedded grooves II 10, the bolts 9 are subjected to the action of elastic cushion, namely the bolts 9 are installed without being independently prepared for the elastic cushion, and the traditional elastic cushion is easy to drop and lose.
Example 9
Referring to fig. 6 to 8, in order to extrude the mixed solution of vinyl pyrrolidone/pyrrolidone carboxylic acid contained in the liquid collecting tank 13, the liquid collecting tank 13 is an annular groove, the pressing plate 14 is an annular plate structure with an inverted convex section, the sealing ring 17 is fixed on the stepped surface of the pressing plate 14, the inner annular surface of the pressing plate 14 and the outer annular surface of the pressing plate 14 are both provided with containing grooves 15, the containing grooves 15 are annular grooves, the two containing grooves 15 are different in size, the elastic rubber ring 16 is fixed in the containing grooves 15, the elastic rubber ring 16 is in an annular plate structure, the elastic rubber ring 16 is fixed between the liquid collecting tank 13 and the containing grooves 15, the surface of the pressing plate 14 is provided with a liquid injection hole 49, the top surface of the pressing plate 14 is fixed with a liquid injection bucket 50, the top of the liquid injection bucket 50 is screwed with a plug 51, the bottom surface of the connecting handle 1 is fixedly provided with two symmetrically distributed mounting frames 26, the mounting frames 26 are of U-shaped platy structures, piston rods of the electric telescopic rods 25 penetrate through bottom plates of the mounting frames 26, the lantern ring 24 is sleeved on a shaft body of the stirring shaft 2, the traction rods 23 are provided with two groups, the traction rods 23 penetrate through the through holes I22, the through holes I22 are formed in the bottom surface of the liquid collecting groove 13, rubber rings are embedded on the surfaces of the through holes I22, the rubber rings are sleeved on the outer sides of the traction rods 23 to generate elastic deformation, the sealing heads 19 are of a convex cylindrical structure, bench-shaped blocks are integrally formed at the top ends of the sealing heads 19 and are fixed at the bottom ends of the push rods 48, the bottom surface diameter of the sealing heads 19 is larger than the aperture of the liquid dropping holes 18, the side walls of the sealing heads 19 are provided with embedded grooves III 20, the embedded grooves III 20 are annular grooves, rubber plug rings 21 are fixed in the insides of the embedded grooves III 20, and after the sealing heads 19 are inserted into the liquid dropping holes 18, the rubber plug ring 21 is clamped between the sealing head 19 and the liquid dropping hole 18 to deform.
After the plug 51 is screwed from the liquid injection bucket 50 and then the vinyl pyrrolidone/pyrrolidone carboxylic acid mixed solution is injected into the liquid collection tank 13, the plug 51 is screwed back on the liquid injection bucket 50 to plug, when the vinyl pyrrolidone/pyrrolidone carboxylic acid mixed solution contained in the liquid collection tank 13 needs to be dropped out, the switch of the electric telescopic rod 25 is triggered, the pushing collar 24 slides along the stirring shaft 2 when the piston rod of the electric telescopic rod 25 stretches, the collar 24 drives the traction rod 23 to drag the pressing plate 14 to slide along the liquid collection tank 13, the elastic rubber ring 16 is stretched to elastically deform when the pressing plate 14 moves, the sealing ring 17 is tightly attached to the inner wall of the liquid collection tank 13, the traction rod 23 and the perforated hole 22 are sealed by the rubber ring, meanwhile, the collar 24 pushes the sealing head 19 out of the liquid collection tank 18 through the push rod 48, and the vinyl pyrrolidone/pyrrolidone carboxylic acid mixed solution drops into the mixed material from the liquid dropping hole 18, and as the top end of the sealing head 19 is integrally formed with the table blocks, namely the sealing head 19 drops from the liquid dropping height of the liquid dropping holes 18 is different, and the flow rate of the pyrrolidone is controlled according to different gaps between the liquid dropping holes 18 and 19.
Example 10
Referring to fig. 2, fig. 9 to fig. 15, in order to realize that the extension plate 39 stretches out of the reaction kettle with different barrel diameters after length adjustment, and realize crushing of the block materials in the material stirring process, the connecting frames 27 are in a '匚' shaped platy structure, the connecting frames 27 are provided with two groups, the two groups of connecting frames 27 are symmetrically distributed about the stirring shaft 2, each group of connecting frames 27 is provided with a plurality of connecting frames 27 which are vertically arranged and distributed, the stirring plate 31 is provided with a plurality of stirring plates 31, the stirring plates 31 and the connecting frames 27 are alternately distributed, two first handles 28 are fixed between the connecting frames 27 and the gaskets 12, two second handles 29 are fixed between the first handles 28, a sliding groove 30 is formed on the surface of the connecting frames 27, the assembling plate 32 is in the sliding connection with the sliding groove 30, two limiting plates 33 which are vertically distributed are fixed on the surface of the assembling plate 32, the two limiting plates 33 are respectively distributed on the upper side and lower side of the stirring plate 31, one end of each limiting plate 33, which is far away from the assembling plate 32, an elastic hanging plate 34 is fixed, one side of the elastic hanging plate 34 facing the stirring plate 31 is provided with a fixing clip 35, a right-angle clip 35 facing the stirring plate 35, a right-angle clip 35 is arranged in the sliding groove 35, and the surface of the stirring plate 35 is fixed on the surface of the stirring plate 35, and the stirring plate is provided with a right angle clip 35, and the surface of the elastic clip 35 is fixed in the sliding groove 35; stirring board 38 and link 27 one-to-one, stirring board 38 is square frame structure, all seted up limit groove 43 on two lateral walls of extension board 39, the inside in limit groove 43 is fixed with rubber pad 44, the surface spiro union of stirring board 38 has clamping screw 45, clamping screw 45 stretches into clamping rubber pad 44 in the cell body of stirring board 38, handle of a knife three 41 is equipped with two sets of, two sets of handle of a knife three 41 are about extension board 39 and are the upper and lower symmetric distribution, the one end sliding connection of handle of a knife three 41 is in assembling groove 42, assemble the surface at stirring board 38 is seted up to groove 42, locating hole 46 has all been seted up on two parallel distribution's of spout 30 lateral walls, the inside activity grafting of locating hole 46 has rubber bulge 47, rubber bulge 47 is fixed at the surface of assembling plate 32.
Since the assembling plates 32 can be selectively installed on the stirring shaft 2, but at least one group of assembling plates 32 is installed on the stirring shaft 2, the concrete steps for installing the assembling plates 32 on the stirring shaft 2 are as follows: the two limiting plates 33 are aligned with one stirring plate 31 which is arranged on the surface of the stirring shaft 2 in the middle, the clamping strips 35 are clamped in the clamping grooves 36 along with the pushing of the assembling plate 32 into the sliding grooves 30, the rubber protrusions 47 are plugged into the positioning holes 46, the assembling plate 32 is assembled on the connecting frame 27 quickly, after the clamping screw 45 is loosened, the pulling plate 40 is pulled by a hand to draw the extending plate 39 to move along the stirring plate 38, the length adjustment of the extending plate 39 extending out of the stirring plate 38 is met, the rubber pad 44 is clamped by the clamping screw 45 is screwed back, the connection between the stirring plate 38 and the extending plate 39 is realized, the three handles 41 are respectively extended from the upper side and the lower side of the extending plate 39 after the extending plate 39 extends out of the stirring plate 38, and in the process that the stirring shaft 2 rotates along with the driving shaft, the first handle 28, the second handle 29 and the third handle 41 break the materials.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The preparation method of the modified material special for the polycarbonate comprises the following components in percentage by mass: 55.0 to 70.0 percent wt percent of TiO 2 pigment of polyvinylpyrrolidone/pyrrolidone carboxylic acid composite coating, 28.0 to 44.0 percent wt percent of siloxane random copolycarbonate and 1.0 to 2.0 percent wt percent of lubricant, wherein the siloxane random copolycarbonate is random copolycarbonate with the siloxane content of more than 20 wt percent, and the lubricant is any one of pentaerythritol stearate, ethylene-vinyl acetate copolymer wax, ethylene bis stearamide, E wax and OP wax, and the paint is characterized in that: the method comprises the following steps:
Dispersing TiO 2 pigment in deionized water at normal temperature, adding an anionic surfactant sodium dodecyl sulfate, continuously stirring for 2 hours until the sodium dodecyl sulfate forms an oleophylic template on the surface of TiO 2, adding an ammonium persulfate initiator, continuously stirring for 30 minutes, heating a TiO 2 pigment dispersion system to 82+/-0.5 ℃ under the condition of maintaining stirring, then dripping a vinylpyrrolidone/pyrrolidone carboxylic acid mixed solution into the TiO 2 pigment dispersion system in a reaction kettle, dripping the solution within 1 hour, continuously stirring for 2 hours, ending the reaction, washing and filtering, and drying a filtrate to obtain a polyvinylpyrrolidone/pyrrolidone carboxylic acid compound coated TiO 2 pigment; the reaction kettle comprises a connecting handle (1) and a stirring shaft (2) fixed at the bottom end of the connecting handle (1), the connecting handle (1) is mounted on a driving shaft of the reaction kettle, the connecting handle (1) is a 'convex' cylinder, a liquid collecting tank (13) is arranged on the surface of the connecting handle (1), a pressing plate (14) is slidably connected to the inside of the liquid collecting tank (13), a sealing ring (17) is fixed on the surface of the pressing plate (14), the sealing ring (17) is clamped between the liquid collecting tank (13) and the pressing plate (14), a liquid dropping hole (18) is formed in the bottom surface of the connecting handle (1), the liquid dropping hole (18) is communicated with the liquid collecting tank (13), a sealing head (19) is inserted into the inside of the liquid dropping hole (18), a push rod (48) is fixed at the top end of the sealing head (19), the push rod (48) is fixed on the bottom surface of the pressing plate (14), an electric telescopic rod (25) is fixed on the bottom surface of the connecting handle (1), a piston rod of the electric telescopic rod (25) is fixed on the surface of a lantern ring (24), a traction rod (23) is fixed on the surface of the lantern ring (24), the traction rod (23) is connected with the bottom surface of the connecting handle (1) and penetrates through the liquid collecting tank (13) and is fixed on the bottom surface of the stirring shaft (2), the surface of the connecting frame (27) is connected with an assembling plate (32) in a sliding manner, the surface of the stirring shaft (2) is fixedly provided with a stirring plate (31), the surface of the assembling plate (32) is fixedly provided with a stirring plate (38), the surface of the stirring plate (38) is connected with an extending plate (39) in a sliding manner, one end of the extending plate (39) is fixedly provided with a pulling plate (40), and the surface of the pulling plate (40) is fixedly provided with a cutter handle III (41); the liquid collecting tank (13) is an annular groove, the pressure plate (14) is an annular plate structure with an inverted convex section, the sealing ring (17) is fixed on the stepped surface of the pressure plate (14), the inner annular surface of the pressure plate (14) and the outer annular surface of the pressure plate (14) are both provided with containing grooves (15), the containing grooves (15) are annular grooves, the two containing grooves (15) are different in size, the elastic rubber ring (16) is fixed in the containing grooves (15), the elastic rubber ring (16) is of an annular plate-shaped structure, the elastic rubber ring (16) is fixed between the liquid collecting tank (13) and the containing grooves (15), the surface of the pressure plate (14) is provided with a liquid injection hole (49), the top surface of the pressure plate (14) is fixed with a liquid injection hopper (50), the top of the liquid injection hopper (50) is in threaded connection with a plug (51), the bottom surface of the connecting handle (1) is fixed with two symmetrically distributed mounting frames (26), the mounting frames (26) are of a U-shaped structure, the bottom plate of the electric telescopic rod (25) penetrates through the mounting frames (26), the annular ring (24) is sleeved on the stirring shaft (2), the bottom surface of the traction rod (23) is provided with a set of holes (22) and a set of holes (22) are formed on the bottom surface of the traction rod (23) and provided with a set of holes (22), the elastic ring is sleeved on the outer side of the traction rod (23) to generate elastic deformation, the sealing head (19) is of a convex cylindrical structure, a table-shaped block is integrally formed at the top end of the sealing head (19), the table-shaped block is fixed at the bottom end of the push rod (48), the bottom surface diameter of the sealing head (19) is larger than the aperture of the drip hole (18), the side wall of the sealing head (19) is provided with an embedded groove III (20), the embedded groove III (20) is an annular groove, a rubber plug ring (21) is fixed in the embedded groove III (20), and after the sealing head (19) is inserted into the drip hole (18), the rubber plug ring (21) is clamped between the sealing head (19) and the drip hole (18) to generate deformation;
Weighing TiO 2 pigment, siloxane random copolycarbonate and lubricant of polyvinylpyrrolidone/pyrrolidone carboxylic acid composite coating according to a proportion, and putting the materials into a high-speed mixer for uniform mixing to obtain a primary mixed material;
Feeding the obtained primary mixed material into a double-screw extruder through a conical feeder, and granulating after melt blending extrusion to obtain the special TiO 2 functional master batch for the siloxane random copolycarbonate, wherein the barrel temperature of the double-screw extruder is 240-260 ℃ and the screw rotating speed is 300-400 rpm.
2. The method for preparing the modified material special for polycarbonate according to claim 1, which is characterized in that: in the preparation process of the polyvinylpyrrolidone/pyrrolidone carboxylic acid composite coated TiO 2 pigment, the mass ratio of sodium dodecyl sulfate to TiO 2 pigment is 1:50, the mass ratio of the vinylpyrrolidone/pyrrolidone carboxylic acid mixed solution is 10:1, the mass ratio of TiO 2 pigment to deionized water is 1:5, the mass ratio of the TiO 2 pigment to the vinylpyrrolidone/pyrrolidone carboxylic acid mixed solution is 5:1, the mass ratio of ammonium persulfate initiator to vinylpyrrolidone is 0.5:100, and the stirring rotation speed is 300-500 revolutions per minute.
3. The method for preparing the modified material special for polycarbonate according to claim 1, which is characterized in that: the connecting handle is characterized in that the connecting groove (3) is formed in the top surface of the connecting handle (1), two embedded grooves (4) which are distributed vertically are formed in the inner wall of the connecting groove (3), the embedded grooves (4) are annular grooves, a rubber ring (5) is fixed in the embedded grooves (4), the rubber ring (5) protrudes out of the embedded grooves (4), two reserved planes (6) which are symmetrically distributed are formed in the top surface of the connecting handle (1), a bolt groove (7) is formed in the surface of the reserved planes (6), bolt holes (8) are formed in the surface of the bolt groove (7), the bolt holes (8) are communicated with the connecting groove (3), a plurality of embedded grooves (10) are formed in the surface of the bolt groove (7), the length of the long side of each embedded groove (10) is smaller than the depth of the corresponding bolt hole (8), bolts (9) are inserted into the embedded grooves (8), rubber clamping blocks (11) are fixed on the surface of the embedded grooves (10), two sides of each rubber clamping block (11) protrude out of the corresponding groove (10), the rubber clamping blocks (11) are fixed on the surface of the corresponding gaskets (12), the gaskets (12) are arranged on the surfaces of the annular clamping blocks, and the gaskets (12) are elastically deformed by extrusion of the bolts (12).
4. The method for preparing the modified material special for polycarbonate according to claim 1, which is characterized in that: the connecting frames (27) are of a '匚' shaped platy structure, the connecting frames (27) are provided with two groups, the two groups of connecting frames (27) are symmetrically distributed about the stirring shaft (2), each group of connecting frames (27) is provided with a plurality of limiting plates (33), the plurality of connecting frames (27) are arranged up and down, the stirring plate (31) is provided with a plurality of stirring plates (31), the stirring plates (31) and the connecting frames (27) are alternately distributed, two knife handles (28) are fixed between the connecting frames (27) and the gaskets (12), two knife handles (29) are fixed between the two knife handles (28), the surface of the connecting frames (27) is provided with a sliding groove (30), the splicing plates (32) are in sliding connection in the sliding groove (30), the surface of the splicing plates (32) is fixedly provided with two limiting plates (33) which are distributed up and down, one ends of the limiting plates (33) far away from the splicing plates (32) are fixedly provided with hanging elastic plates (34), the elastic hanging plates (34) face one side of the stirring plates (31) towards the fixing plates (35), the fixing plates (35) of the stirring plates (35) face the fixing plates (35) in a right-angle groove (36) of the stirring shaft (35), the surface of the elastic hanging plate (34) is fixed with a pull ring (37).
5. The method for preparing the modified material special for polycarbonate, which is characterized in that: stirring board (38) and link (27) one-to-one, stirring board (38) are square frame structure, limit groove (43) have all been seted up on two lateral walls of extension board (39), the inside of limit groove (43) is fixed with rubber pad (44), the surface spiro union of stirring board (38) has clamping screw (45), clamping screw (45) stretch into in the cell body of stirring board (38) centre gripping rubber pad (44), handle of a knife three (41) are equipped with two sets of, two sets of handle of a knife three (41) are about extension board (39) about the upper and lower symmetric distribution, the one end sliding connection of handle of a knife three (41) is in assembling groove (42), assemble the surface at stirring board (38) is all seted up on the lateral wall of two parallel distribution's of spout (30), the inside activity grafting of locating hole (46) has rubber bulge (47), the surface at piecing together in rubber bulge (47) is fixed.
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| CN110128808A (en) * | 2019-05-20 | 2019-08-16 | 飞雕电器集团有限公司 | A kind of polycarbonate functionality master batch and its preparation method and application |
| CN113248895A (en) * | 2021-07-07 | 2021-08-13 | 南京工业大学 | Multifunctional polycarbonate modified material and preparation method thereof |
| CN113388266A (en) * | 2021-05-31 | 2021-09-14 | 北京航天凯恩化工科技有限公司 | Pearlescent pigment dispersion coating method and pearlescent effect polycarbonate plate |
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| CN107805321A (en) * | 2017-11-24 | 2018-03-16 | 锦州钛业股份有限公司 | A kind of preparation method of makrolon tailored version TiO 2 pigment |
| CN108912686A (en) * | 2018-07-16 | 2018-11-30 | 江苏万纳普新材料科技有限公司 | A kind of high-efficiency antimicrobial toughening flame-proof Multi-functional plastic masterbatch and preparation method thereof |
| CN110128808A (en) * | 2019-05-20 | 2019-08-16 | 飞雕电器集团有限公司 | A kind of polycarbonate functionality master batch and its preparation method and application |
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Denomination of invention: A special modified material for polycarbonate and its preparation method Granted publication date: 20240510 Pledgee: Bank of Nanjing Co.,Ltd. Changzhou Branch Pledgor: JIANGSU WANNAPU NEW MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2024980046920 |