CN105440642A - Modified polycarbonate engineering plastic and preparation method of modified polycarbonate engineering plastic - Google Patents
Modified polycarbonate engineering plastic and preparation method of modified polycarbonate engineering plastic Download PDFInfo
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- CN105440642A CN105440642A CN201610018151.9A CN201610018151A CN105440642A CN 105440642 A CN105440642 A CN 105440642A CN 201610018151 A CN201610018151 A CN 201610018151A CN 105440642 A CN105440642 A CN 105440642A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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Abstract
The invention discloses modified polycarbonate engineering plastic and a preparation method of the modified polycarbonate engineering plastic. The modified polycarbonate engineering plastic is prepared from the following ingredients in parts by weight: 40 to 70 parts of polycarbonate, 20 to 25 parts of carbon fiber, 10 to 15 parts of halogen-free flame retardants, 3 to 6 parts of anti-impact modifiers and 1 to 2 parts of pigment. The modified polycarbonate engineering plastic has excellent anti-impact performance, high flowability and strong toughness; the conductivity performance and the flame retardant performance are improved; in addition, the processing performance is also improved; through the impact modifiers, the toughness and the impact resistance performance of the modified polycarbonate engineering plastic are enhanced, and the flowability is high; through carbon fiber addition, the modified polycarbonate engineering plastic has better electrical conductivity; through halogen-free flame retardant addition, the flame retardant performance of the modified polycarbonate engineering plastic is improved; in addition, the processing is more favorably realized.
Description
Technical field
The present invention relates to engineering plastics technical field, particularly relate to a kind of modified polycarbonate engineering plastics and preparation method thereof.
Background technology
Engineering plastics have excellent over-all properties, and rigidity is large, and creep is little, and physical strength is high, good heat resistance, and electrical insulating property is good, and can use for a long time in harsher chemistry, physical environment, alternative metal uses as structural timber.Engineering plastics have become the field that in world today's plastics industry, rate of growth is the fastest, and its development not only plays supporting role to national mainstay industry and modern high technology industry, also promote the adjustment of Transform of Traditional Industrial Equipment and product structure simultaneously.At present, engineering plastics are widely used in electric, the industry such as automobile, building, office equipment, machinery, aerospace, to mould Dai Gang, to become international popular trend to mould Dai Muyi.
Polycarbonate (PC), as one of five large-engineering plastics, is that a kind of molecular structure is special, the thermoplastic engineering resin of high comprehensive performance, and at present, polycarbonate is rapid as its application development of engineering plastic.Containing phenyl ring and structural carbonate on the molecular chain of polycarbonate, therefore, its molecule chain rigidity is very large, due to this special molecular structure of polycarbonate, determines the performance of the aspect such as mechanics, calorifics, optics of many uniquenesses of polycarbonate.Polycarbonate had both had the intensity of similar non-ferrous metal, and its shock strength is high, and had excellent thermotolerance, winter hardiness.But because the high rigidity of PC molecular chain and large resistance position, space make it have higher melt viscosity, therefore processing difficulties, by the material of polycarbonate metal as an alternative, its shock resistance, mobility, toughness, conductivity and flame retardant properties have much room for improvement.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of modified polycarbonate engineering plastics, and its shock resistance is excellent, mobility is high, toughness is strong, and conductivity and flame retardant properties are improved.
For reaching this object, the present invention by the following technical solutions:
A kind of modified polycarbonate engineering plastics, by weight, comprise following raw material: the pigment of the polycarbonate of 40 ~ 70 parts, the carbon fiber of 20 ~ 25 parts, the halogen-free flame retardants of 10 ~ 15 parts, the anti-impact modifier of 3 ~ 6 parts and 1 ~ 2 part; Such as polycarbonate 40 parts, 50 parts, 60 parts, 70 parts, 20 parts, carbon fiber, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, halogen-free flame retardants 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, anti-impact modifier 3 parts, 4 parts, 5 parts, 6 parts, pigment 1 part, 1.5 parts, 2 parts.
Preferably, modified polycarbonate engineering plastics, by weight, comprise following raw material: the pigment of the polycarbonate of 50 ~ 60 parts, the carbon fiber of 22 ~ 24 parts, the halogen-free flame retardants of 12 ~ 14 parts, the anti-impact modifier of 4 ~ 5 parts and 1.2 ~ 1.8 parts; Such as polycarbonate 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, 60 parts, 22 parts, carbon fiber, 23 parts, 24 parts, halogen-free flame retardants 12 parts, 12.5 parts, 13.5 parts, 14 parts, anti-impact modifier 4 parts, 4.1 parts, 4.5 parts, 4.7 parts, 4.8 parts, 5 parts, pigment 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.8 parts, 2 parts.
Preferably, modified polycarbonate engineering plastics, by weight, comprise following raw material: the pigment of the polycarbonate of 55 parts, the carbon fiber of 23 parts, the halogen-free flame retardants of 13 parts, the anti-impact modifier of 4.5 parts and 1.5 parts.
Melting index is a kind of numerical value that plastic material adds the mobility in man-hour that represents, to be measuring standard association of the U.S. (ASTM) according to the method for the usual qualification plastic properties in du pont company formulate forms for it, its testing method first allows plastic pellet in certain hour (10 minutes), under certain temperature and pressure (various standard of materials is different), be melted into plastic liquid, then gram (g) that flowed out for 2.095mm pipe by a diameter is counted, generally represent by MI value, its value is larger, represent that the processing fluidity of this plastic material is better, otherwise it is then poorer.MI25g/10min, it represents that these plastics are extruded 25 grams in 10 minutes.The MI value of general common plastics is approximately between 1 ~ 25.
Wherein, the powder polycarbonate of described polycarbonate to be melting index be 10 ~ 25g/10mins.
Carbon fiber (carbonfiber is called for short CF) is the tencel material of the high strength of a kind of carbon content more than 95%, high modulus fibre.It to be piled up along fiber axial direction due by organic fibres such as flake graphite crystallites to form, the micro crystal graphite material obtained through carbonization and graphitization processing.Carbon fiber " soft outside but hard inside ", quality is lighter than metallic aluminium, but intensity is higher than iron and steel, and has characteristic that is corrosion-resistant, high-modulus, defence and military and civilian in be all important materials.It not only has the intrinsic intrinsic property of carbon material, has both again the soft workability of textile fibres, is fortifying fibre of new generation.Carbon fiber has many premium propertiess, axial strength and the modulus of carbon fiber are high, density is low, higher than performance, without creep, and superhigh temperature resistant under non-oxygenated environment, resistance to fatigue is good, specific heat and electroconductibility are between nonmetal and metal, and thermal expansivity is little and have anisotropy, good corrosion resistance, X-ray transparent is good, and electrical and thermal conductivity performance, electromagnetic wave shielding are good.
Wherein, described halogen-free flame retardants is any one or at least two kinds in the phosphate flame retardant of aggretion type, oligomeric aryl phosphate ester, triphenylphosphate, sulfonate.
Anti-impact modifier is called to improve the auxiliary agent added for the purpose of plastic impact performance.The Main Function of anti-impact modifier is the low temperature brittleness improving macromolecular material, gives the toughness that it is higher.Impact modifiers can not only improve the shock strength of macromolecular material, also can improve the processing characteristics of macromolecular material.At present, conventional anti-impact modifier mainly contains acrylonitrile-butadiene-styrene copolymer (ABS), MBS (MBS), chlorinatedpolyethylene (CPE), ethylene-vinyl acetate copolymer (EVA), styrene-butadiene-styrene (SBS), synthetic rubber and thermoplastic elastomer, brittle plastic can be become toughened plastic by the anti-impact modifier that with the addition of these types, the plastics used under the plastics that can only apply at normal temperatures can being become low temperature, in addition, effectively can also improve the processing characteristics of plastics.
Wherein, described anti-impact modifier is one in acrylonitrile-butadiene-styrene copolymer, MBS, chlorinatedpolyethylene, ethylene-vinyl acetate copolymer, styrene-butadiene-styrene, synthetic rubber and thermoplastic elastomer or at least two kinds.
Two of object of the present invention is the preparation method providing a kind of modified polycarbonate engineering plastics, comprises the following steps: by weight, takes the polycarbonate of 40 ~ 70 parts, the carbon fiber of 20 ~ 25 parts, adds in mixing machine after drying and stir; Add the anti-impact modifier of 3 ~ 6 parts and the pigment of 1 ~ 2 part successively, the halogen-free flame retardants of 10 ~ 15 parts of preheating continues stirring and obtain compound; Compound being added in twin screw extruder, through melt extruding, cooling granulation, preparing modified polycarbonate engineering plastics.
Wherein, the temperature of described drying is 80 ~ 110 DEG C.
Wherein, the temperature of the preheating of described halogen-free flame retardants is 80 ~ 90 DEG C.
Wherein, the temperature of described melting is 220 ~ 240 DEG C.
Compared with prior art, beneficial effect of the present invention is: a kind of modified polycarbonate engineering plastics of the present invention, by weight, following raw material is comprised: the pigment of the polycarbonate of 40 ~ 70 parts, the carbon fiber of 20 ~ 25 parts, the halogen-free flame retardants of 10 ~ 15 parts, the anti-impact modifier of 3 ~ 6 parts and 1 ~ 2 part; The shock resistance of modified polycarbonate engineering plastics of the present invention is excellent, mobility is high, toughness is strong, and conductivity and flame retardant properties are improved; Anti-impact modifier makes the toughness of modified polycarbonate engineering plastics and shock resistance strengthen, and mobility is high; Adding of carbon fiber makes modified polycarbonate engineering plastics have better electroconductibility, and adding of halogen-free flame retardants makes the flame retardant properties of modified polycarbonate engineering plastics be improved.
In addition, the preparation manipulation step of modified polycarbonate engineering plastics of the present invention is simple, and be more conducive to processing, be suitable for the batch production of modified polycarbonate engineering plastics, the light equipment fields such as automobile, aviation, electronics can be widely used in, the part be prepared into substituted for traditional metal parts and can recycle, and effectively can reduce production cost.
Embodiment
Technical scheme of the present invention is further illustrated below by embodiment.
As no specific instructions, various raw material of the present invention all can commercially availablely be buied, or prepares according to the ordinary method of this area.
Embodiment 1
By weight, take the polycarbonate of 70 parts, the carbon fiber of 20 parts, add in mixing machine after 20 minutes through 85 DEG C of dryings and stir; Add the acrylonitrile-butadiene-styrene copolymer of 4 parts and the pigment of 2 parts successively, the phosphate flame retardant of 12 parts of 85 DEG C of preheatings continues stirring and obtain compound; Compound is added in twin screw extruder, through 220 DEG C melt extrude, cooling granulation, prepare modified polycarbonate engineering plastics.
Embodiment 2
By weight, take the polycarbonate of 60 parts, the carbon fiber of 24 parts, add in mixing machine after 20 minutes through 95 DEG C of dryings and stir; Add the chlorinatedpolyethylene of 3 parts and the pigment of 2 parts successively, the triphenylphosphate of 15 parts of 90 DEG C of preheatings continues stirring and obtain compound; Compound is added in twin screw extruder, through 240 DEG C melt extrude, cooling granulation, prepare modified polycarbonate engineering plastics.
Embodiment 3
By weight, take the polycarbonate of 50 parts, the carbon fiber of 20 parts, add in mixing machine after 20 minutes through 80 DEG C of dryings and stir; Add the acrylonitrile-butadiene-styrene copolymer of 5 parts and the mixture (mass ratio is 2:1) of MBS and the pigment of 1.5 parts successively, the oligomeric aryl phosphate ester of 14 parts of 85 DEG C of preheatings continues stirring and obtain compound; Compound is added in twin screw extruder, through 220 DEG C melt extrude, cooling granulation, prepare modified polycarbonate engineering plastics.
Embodiment 4
By weight, take the polycarbonate of 40 parts, the carbon fiber of 25 parts, add in mixing machine after 20 minutes through 105 DEG C of dryings and stir; Add the thermoplastic elastomer of 3 parts and the pigment of 2 parts successively, the phosphate flame retardant of 10 parts of 90 DEG C of preheatings continues stirring and obtain compound; Compound is added in twin screw extruder, through 230 DEG C melt extrude, cooling granulation, prepare modified polycarbonate engineering plastics.
Comparative example
Powder polycarbonate is added in twin screw extruder, through 230 DEG C melt extrude, cooling granulation, prepare polycarbonate engineering plastic.
The modified polycarbonate engineering plastics prepare embodiment 1 ~ 4 and comparative example prepare polycarbonate engineering plastic, with reference to the testing method of ASTM-D256, done test (test condition: 23 DEG C) its shock strength; With reference to the testing method of ASTM-D1238, its mobility is done and has tested (test condition: 260 DEG C/2.16KG); With reference to the testing method of ASTM-D638, its tensile strength is done and has tested (test condition: 50mm/min); With reference to the testing method of ASTM-D790, its flexural strength is done and has tested (test condition: 10mm/min); Test flame retardant properties, experimental result is as shown in table 1.
Table 1
As shown in table 1, the shock resistance of modified polycarbonate engineering plastics of the present invention, mobility, toughness, flame retardant properties are all improved, and conductivity and processing characteristics are also improved.In addition, the preparation manipulation step of modified polycarbonate engineering plastics of the present invention is simple, be suitable for the batch production of modified polycarbonate engineering plastics, the light equipment fields such as automobile, aviation, electronics can be widely used in, the part be prepared into is replaced traditional metal parts and can be recycled, and effectively can reduce production cost.
Applicant states, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (10)
1. modified polycarbonate engineering plastics, it is characterized in that, by weight, following raw material is comprised: the pigment of the polycarbonate of 40 ~ 70 parts, the carbon fiber of 20 ~ 25 parts, the halogen-free flame retardants of 10 ~ 15 parts, the anti-impact modifier of 3 ~ 6 parts and 1 ~ 2 part.
2. modified polycarbonate engineering plastics according to claim 1, it is characterized in that, by weight, following raw material is comprised: the pigment of the polycarbonate of 50 ~ 60 parts, the carbon fiber of 22 ~ 24 parts, the halogen-free flame retardants of 12 ~ 14 parts, the anti-impact modifier of 4 ~ 5 parts and 1.2 ~ 1.8 parts.
3. modified polycarbonate engineering plastics according to claim 1, it is characterized in that, by weight, following raw material is comprised: the pigment of the polycarbonate of 55 parts, the carbon fiber of 23 parts, the halogen-free flame retardants of 13 parts, the anti-impact modifier of 4.5 parts and 1.5 parts.
4. modified polycarbonate engineering plastics according to claim 1, is characterized in that, the powder polycarbonate of described polycarbonate to be melting index be 10 ~ 25g/10mins.
5. modified polycarbonate engineering plastics according to claim 1, is characterized in that, described halogen-free flame retardants is any one or at least two kinds in the phosphate flame retardant of aggretion type, oligomeric aryl phosphate ester, triphenylphosphate, sulfonate.
6. modified polycarbonate engineering plastics according to claim 1, it is characterized in that, described anti-impact modifier is one in acrylonitrile-butadiene-styrene copolymer, MBS, chlorinatedpolyethylene, ethylene-vinyl acetate copolymer, styrene-butadiene-styrene, synthetic rubber and thermoplastic elastomer or at least two kinds.
7. the preparation method of modified polycarbonate engineering plastics as claimed in claim 1, it is characterized in that, comprise the following steps: by weight, take the polycarbonate of 40 ~ 70 parts, the carbon fiber of 20 ~ 25 parts, add in mixing machine after drying and stir; Add the anti-impact modifier of 3 ~ 6 parts and the pigment of 1 ~ 2 part successively, the halogen-free flame retardants of 10 ~ 15 parts of preheating continues stirring and obtain compound; Compound being added in twin screw extruder, through melt extruding, cooling granulation, preparing modified polycarbonate engineering plastics.
8. preparation method according to claim 7, is characterized in that, the temperature of described drying is 80 ~ 110 DEG C.
9. preparation method according to claim 7, is characterized in that, the temperature of the preheating of described halogen-free flame retardants is 80 ~ 90 DEG C.
10. preparation method according to claim 7, is characterized in that, the temperature of described melting is 220 ~ 240 DEG C.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106554575A (en) * | 2016-12-04 | 2017-04-05 | 广西大学 | Electrical equipment insulating materials |
| CN106995602A (en) * | 2017-04-07 | 2017-08-01 | 广州科苑新型材料有限公司 | A kind of high-modulus height flowing halogen-free flame retardant PC/ABS alloy material and preparation method thereof |
| CN109423024A (en) * | 2017-09-01 | 2019-03-05 | 汉达精密电子(昆山)有限公司 | Halogen-free flame retardant PC/CF anti-static material and products thereof |
| CN113201213A (en) * | 2021-04-02 | 2021-08-03 | 河北北田工程塑料有限公司 | High-flame-retardancy engineering plastic and preparation method thereof |
| CN113583419A (en) * | 2021-07-02 | 2021-11-02 | 广州搜料信息技术有限公司 | Modified polycarbonate PC with enhanced flame retardant property and preparation process thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106554575A (en) * | 2016-12-04 | 2017-04-05 | 广西大学 | Electrical equipment insulating materials |
| CN106995602A (en) * | 2017-04-07 | 2017-08-01 | 广州科苑新型材料有限公司 | A kind of high-modulus height flowing halogen-free flame retardant PC/ABS alloy material and preparation method thereof |
| CN106995602B (en) * | 2017-04-07 | 2019-02-05 | 广州科苑新型材料有限公司 | A kind of high-modulus height flowing halogen-free flame retardant PC/ABS alloy material and preparation method thereof |
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| CN113201213A (en) * | 2021-04-02 | 2021-08-03 | 河北北田工程塑料有限公司 | High-flame-retardancy engineering plastic and preparation method thereof |
| CN113583419A (en) * | 2021-07-02 | 2021-11-02 | 广州搜料信息技术有限公司 | Modified polycarbonate PC with enhanced flame retardant property and preparation process thereof |
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