CN102604212A - Aramid fiber pulp-enhanced expansion flame retardant polypropylene composite material and preparation method thereof - Google Patents
Aramid fiber pulp-enhanced expansion flame retardant polypropylene composite material and preparation method thereof Download PDFInfo
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- CN102604212A CN102604212A CN2012100474367A CN201210047436A CN102604212A CN 102604212 A CN102604212 A CN 102604212A CN 2012100474367 A CN2012100474367 A CN 2012100474367A CN 201210047436 A CN201210047436 A CN 201210047436A CN 102604212 A CN102604212 A CN 102604212A
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 65
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 54
- -1 polypropylene Polymers 0.000 title claims abstract description 53
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 50
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229920006231 aramid fiber Polymers 0.000 title abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 35
- 239000004760 aramid Substances 0.000 claims description 40
- 229920003235 aromatic polyamide Polymers 0.000 claims description 40
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 11
- 239000012757 flame retardant agent Substances 0.000 claims description 11
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical class O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 10
- 239000003960 organic solvent Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- 238000005453 pelletization Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 7
- 239000011347 resin Substances 0.000 abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 6
- 239000004033 plastic Substances 0.000 abstract description 5
- 229920003023 plastic Polymers 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 abstract description 2
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 abstract 1
- 239000000463 material Substances 0.000 description 19
- 239000003610 charcoal Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000004114 Ammonium polyphosphate Substances 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 4
- 229920001276 ammonium polyphosphate Polymers 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 101100136092 Drosophila melanogaster peng gene Proteins 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011208 reinforced composite material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a preparation method of a polymer composite material, particularly to a preparation method of an aramid fiber pulp-enhanced expansion flame retardant polypropylene composite material. According to the invention, aramid fiber pulp-enhanced expansion flame retardant polypropylene with high strength is utilized, the composite action of aramid fiber pulp-enhanced expansion flame retardant polypropylene is relied on, the high strength and bearing stress of fiber is utilized to bear stress, and the plastic flowage of matrix resin and the bonding property and of the matrix resin with resin are utilized to transfer stress, so that a halogen-free flame retardant light-weighted polypropylene composite material is provided.
Description
Technical field
The present invention relates to a kind of preparation method of polymer composite, particularly a kind of aramid pulp strengthens the preparation method of expanded flame-retardant polypropylene matrix material.
Background technology
Vestolen PP 7052 (PP) has characteristics such as good mechanical performance, processing characteristics, chemical resistance, electrical insulating property and nontoxic lightweight; Be a kind of general-purpose plastics of high comprehensive performance, be widely used in fields such as household electrical appliances, electronics, material of construction, automotive industry, weaving, decoration; Because the Vestolen PP 7052 easy firing, be merely 17-18 like its oxygen index, can produce a large amount of molten drops during burning, if insufficient meeting of burning for example discharges toxic gases such as CO, fire hazard is bigger etc., has limited its use range; Therefore along with Vestolen PP 7052 has certain requirements the field like the widespread use of building, automotive industry at some to the product flame retardant properties, guaranteeing that the Vestolen PP 7052 mechanical property reaches how to improve polyacrylic flame retardant properties under the prerequisite of goods requirement be a crucial problem.
Expansion type flame retardant (IFR) is considered to have most a kind of environment friendly flame retardant of development potentiality, generally is made up of acid source, source of the gas, charcoal source three parts.Ammonium polyphosphate (APP) is the most frequently used acid source and source of the gas, and the Pentaerythritols polyol is the most frequently used charcoal source; The fire retardant mechanism of IFR is to be heated to that the certain temperature acid source discharges mineral acid and the polyvalent alcohol esterification is dehydrated into charcoal; The heavy-gravity carbonizing production expands under the effect of the rare gas element that source of the gas discharges; Form the charcoal layer of Peng Song, that this charcoal layer has is heat insulation, oxygen barrier, press down effects such as cigarette, anti-molten drop; Chinese patent CN102134352A discloses and has adopted the expansion type flame retardant that is re-dubbed by ammonium polyphosphate (APP) and novel triazines char-forming agent; 30% expansion type flame retardant is added to the flame retardant properties that can improve material in the Vestolen PP 7052 widely; This matrix material has nontoxic simultaneously; Low cigarette, advantages such as environmental protection, but mechanical property also can descend simultaneously significantly.
Adopting filler to strengthen expanded flame-retardant polypropylene is the emphasis of studying at present; Hao Dongmei is in the document (research of halogen-free expansion fire retardant ANTI-610 fire retardant fiber glass reinforced polypropylene; The fire-retardant academic nd Annual Meeting collection in the whole nation, 2008, reported that short glass fiber strengthens the expanded flame-retardant polypropylene matrix material in 74-77); But adopt the short glass fiber enhancing can make the density of material increase impact strength decreased; Aramid pulp (PPTA-pulp) is the fibrillation product of aramid fiber, and the surface is lint shape fiber grows thickly, and filoplume is abundant, and coarse, fibre axis caudad fibril changes into needle-like, and these fibrils are along the axial well-regulated orientations of pulp; Aramid fiber not only mechanical properties is excellent, and can fusion, and surpass 570 ℃ and just progressively decompose carbonization, 180 ℃ of following life-time service, intensity and modulus can not change; The compare remarkable advantage of thomel and spun glass of PPTA-pulp is that PPTA-pulp has good toughness, no matter therefore can not reduce its length-to-diameter ratio how in the fierce hybrid process process, density is littler simultaneously; Li Jinchun is in document (structure of aramid pulp reinforced polypropylene compound material and performance; The chemical industry journal, 2007,12 (58): reported 3192-3196) that the employing aramid pulp carries out enhancing modified to Vestolen PP 7052; This type matrix material is compared characteristics such as having light weight with the glass reinforced composite materials; Therefore be applied to automotive industry, material of construction, fields such as weaving; How to improve the flame retardant properties of this type matrix material and shown great attention to, strengthen the expanded flame-retardant polypropylene matrix material with aramid pulp and do not see relevant report as yet.
Summary of the invention
The objective of the invention is to utilize and have high-intensity aramid pulp enhancing expanded flame-retardant polypropylene; Rely on its compound action; The HS of utilizing fiber is to meet with stresses; Utilize matrix resin plastic flow and with the cohesiveness of fiber to transmit stress, the halogen-free flameproof lightweight PP composite material that provides a kind of flame retardant properties and mechanical property all can reach product requirement.
A kind of aramid pulp of the present invention strengthens the expanded flame-retardant polypropylene matrix material, and its component with listed as parts by weight is:
100 parts of Vestolen PP 7052;
25 ~ 30 parts of expansion type flame retardants;
1 ~ 10 part of aramid pulp;
5 ~ 10 parts of polypropylene grafted maleic anhydrides;
1 ~ 2 part of silane coupling agent.
Vestolen PP 7052 used in the present invention is homopolymerization or COPP, and melting index is 2.5 ~ 8.5g/10min.
Expansion type flame retardant used in the present invention is the EPFR-100D of general plug furan (Qingyuan City) phosphorus chemistry ltd; It is applied to polyacrylic extrusion and does not have the neatly situation; This fire retardant contains acid source, source of the gas, carbon source, plays fire retardation to become charcoal, mechanism of intumescence.
The density of aramid pulp used in the present invention is 1.03-1.04g/cm
3
Its percentage of grafting of polypropylene grafted maleic anhydride used in the present invention is 1%.
Silane coupling agent used in the present invention is selected from a kind of in γ-An Bingjisanyiyangjiguiwan, γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane, γ-(methacryloxypropyl) propyl trimethoxy silicane.
Organic solvent used in the present invention is absolute ethyl alcohol, methyl alcohol or toluene.
The preparation method that a kind of aramid pulp of the present invention strengthens the expanded flame-retardant polypropylene matrix material is:
(1) with aramid pulp, expansion type flame retardant joins in the organic solvent, after stirring, adds silane coupling agent and stirs, and the air blast oven dry obtains composite flame-retardant agent behind the suction filtration; Add the aramid pulp of 1 ~ 10g, expansion type flame retardant and the 1 ~ 2g silane coupling agent of 25 ~ 30g in every 300mL organic solvent;
(2) with Vestolen PP 7052, composite flame-retardant agent, polypropylene grafted maleic anhydride; Mix the back under 180 ℃ ~ 200 ℃ of Banbury mixeies; Under 50 ~ 200 rev/mins of rotating speeds melt blending take out after 5 ~ 10 minutes obtain that aramid pulp strengthens the expanded flame-retardant polypropylene matrix material or in parallel parallel dual-screw extruding machine the blend extruding pelletization obtain matrix material, its expressing technique is 170 ~ 180 ℃ in a district, 180 ~ 200 ℃ in two districts; 190 ~ 210 ℃ in three districts; 190 ~ 200 ℃ in four districts, screw speed 200 ~ 300 r/min, feeding frequency 18 ~ 25 Hz.
Described a kind of aramid pulp strengthens the preparation method of expanded flame-retardant polypropylene matrix material; It is characterized in that: in the step (1) with aramid pulp; Expansion type flame retardant joins in the organic solvent; Stirring rake stirred 3 hours with the 600r/min rotating speed, added silane coupling agent and stirred 10 minutes, and 80 ℃ of air blast oven dry obtained composite flame-retardant agent in 3 hours behind the suction filtration.
The aramid pulp that the present invention makes strengthens the expanded flame-retardant polypropylene matrix material, can make polyacrylic oxygen index bring up to 28% (volume percent) from 18% (volume percent), and tensile strength reaches 30.38MPa simultaneously, and shock strength reaches 56.94 J/m; And do not add PPTA-pulp, and only use 30 parts of expansion type flame retardant filled polypropylenes, though the matrix material oxygen index reaches 35 tensile strengths and is merely 23.09MPa, shock strength is 45.75 J/m.
High-intensity aramid pulp strengthens expanded flame-retardant polypropylene; Rely on its compound action; The HS of utilizing fiber is to meet with stresses; Utilize matrix resin plastic flow and with the cohesiveness of fiber to transmit stress, provide a kind of flame retardant properties and mechanical property all can reach the halogen-free anti-flaming polypropylene material of product requirement; With add expansion type flame retardant merely and compare; It is better that the present invention has mechanical property, and flame retardant properties descends slightly, compares with the short glass fiber reinforced polypropylene compound material; This matrix material light weight; And mechanical property and flame retardant properties can reach product requirement, can be used for material of construction, automotive industry, and these have the field of requirement for the product flame retardant properties.
Embodiment
Following embodiment is to further specify of the present invention, rather than limits scope of the present invention.
The Vestolen PP 7052 that following examples adopted is the J540 that raises sub-petrochemical industry, melting index 3.8g/10min; Polypropylene grafted maleic anhydride is the CMG9801 of the liter of Shanghai day, and percentage of grafting is 1%; Expansion type flame retardant is the EPFR-100D that general plug furan (Qingyuan City) phosphorus chemistry ltd is produced; Aramid pulp is the DFP-103 of Shanghai Lanbang Industry Fibre Co., Ltd. " golden spider "; Silane coupling agent is the KH-550 of Nanjing Wei chemical industry ltd through the sky; Organic solvent is the absolute ethyl alcohol of Chemical Reagent Co., Ltd., Sinopharm Group, and used Banbury mixer is a Haake Rheomix Banbury mixer; Employed twin screw extruder is the SHJ-35 cocurrent and parallel twin screw extruder that Nanjing extensively reaches rubber and plastics machine factory, length-to-diameter ratio 40/1.
Embodiment 1-5:
(1) according to the prescription of table 1; With aramid pulp and expansion type flame retardant is organic solvent with the absolute ethyl alcohol; Stirring rake stirred 3 hours with the 600r/min rotating speed, added silane resin acceptor kh-550 and stirred 10 minutes, and 80 ℃ of air blast oven dry obtained composite flame-retardant agent in 3 hours behind the suction filtration.
(2), Vestolen PP 7052, composite flame-retardant agent, polypropylene grafted maleic anhydride are mixed the back in Banbury mixer 190 according to the prescription of table 1
oUnder the C, 100r/min, melt blending 10 minutes obtains aramid pulp and strengthens the expanded flame-retardant polypropylene matrix material, and gained material properties test result sees table 2.
Embodiment 6:
The treating processes of composite flame-retardant agent is with embodiment 1-5.
According to the prescription of table 1, after Vestolen PP 7052, composite flame-retardant agent, polypropylene grafted maleic anhydride mixed mixture added that the blend extruding pelletization obtains anti-flaming polypropylene material in the parallel parallel dual-screw extruding machine, its expressing technique is 180 ℃ in a district; 190 ℃ in two districts; 200 ℃ in three districts, 195 ℃ in four districts, screw speed 260 r/min; Feeding frequency 20 Hz, the The performance test results of gained material is seen shown in the table 2.
Comparative Examples 1:
Only adopt expansion type flame retardant to prepare anti-flaming polypropylene material.
After according to the prescription of table 1 each component being mixed, in Banbury mixer in 190
oC, 100r/min, melt blending discharging after 6 minutes obtains anti-flaming polypropylene material, and the The performance test results of gained material is seen shown in the table 2.
Comparative Examples 2:
Only adopt aramid pulp to prepare the RPP material.
The preprocessing process of aramid pulp does not just add expansion type flame retardant with embodiment 1-5.
After according to the prescription of table 1 each component being mixed, in Banbury mixer in 190
oC, 100r/min, melt blending discharging after 10 minutes obtains the aramid pulp reinforced polypropylene compound material, and the The performance test results of gained material is seen shown in the table 2.
Data from table 2 can find out that along with the continuous increase of aramid pulp content, the oxygen index of matrix material constantly reduces; Mechanical property increases afterwards earlier and reduces; When pulp content is a Vestolen PP 7052 weight 5%, when IFR content was Vestolen PP 7052 weight 30%, the mechanical property of material was best; This moment, flame retardant properties descended slightly, can reach requirement of products; The density that contains the matrix material of 5% pulp enhancing expanded flame-retardant polypropylene in addition is 1.04 g/cm
3Yet the density of 30% short glass fiber RPP is 1.6 g/cm
3, obvious aramid fiber reinforced composite materials lightweight; Embodiment 2 through same prescription different processing methods is visible with embodiment 6 contrasts, and the mechanical property of the matrix material that the employing twin screw extruder obtains is better.
Table 1 pulp strengthens the expanded flame-retardant polypropylene composite-material formula
Table 2 pulp strengthens the expanded flame-retardant polypropylene composite property
Claims (9)
1. an aramid pulp strengthens the expanded flame-retardant polypropylene matrix material, and its component with listed as parts by weight is:
100 parts of Vestolen PP 7052;
25 ~ 30 parts of expansion type flame retardants;
1 ~ 10 part of aramid pulp;
5 ~ 10 parts of polypropylene grafted maleic anhydrides;
1 ~ 2 part of silane coupling agent.
2. a kind of aramid pulp as claimed in claim 1 strengthens the expanded flame-retardant polypropylene matrix material, and it is characterized in that: said Vestolen PP 7052 is homopolymerization or COPP, and melting index is 2.5 ~ 8.5g/10min.
3. a kind of aramid pulp as claimed in claim 1 strengthens the expanded flame-retardant polypropylene matrix material, and its characteristic exists
In: the density of said aramid pulp is 1.03-1.04g/cm
3
4. a kind of aramid pulp as claimed in claim 1 strengthens the expanded flame-retardant polypropylene matrix material, and its characteristic exists
In: its percentage of grafting of said polypropylene grafted maleic anhydride is 1%.
5. a kind of aramid pulp as claimed in claim 1 strengthens the expanded flame-retardant polypropylene matrix material, and its characteristic exists
Be selected from a kind of in γ-An Bingjisanyiyangjiguiwan, γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane, γ-(methacryloxypropyl) propyl trimethoxy silicane in: said silane coupling agent.
6. a kind of aramid pulp as claimed in claim 1 strengthens the preparation method of expanded flame-retardant polypropylene matrix material, and concrete steps are following:
(1) with aramid pulp, expansion type flame retardant joins in the organic solvent, after stirring, adds silane coupling agent and stirs, and the air blast oven dry obtains composite flame-retardant agent behind the suction filtration; Add the aramid pulp of 1 ~ 10g, expansion type flame retardant and the 1 ~ 2g silane coupling agent of 25 ~ 30g in every 300mL organic solvent;
(2) with Vestolen PP 7052, composite flame-retardant agent, polypropylene grafted maleic anhydride; Mix the back under 180 ℃ ~ 200 ℃ of Banbury mixeies; Under 50 ~ 200 rev/mins of rotating speeds melt blending take out after 5 ~ 10 minutes obtain that aramid pulp strengthens the expanded flame-retardant polypropylene matrix material or in parallel parallel dual-screw extruding machine the blend extruding pelletization obtain matrix material, its expressing technique is 170 ~ 180 ℃ in a district, 180 ~ 200 ℃ in two districts; 190 ~ 210 ℃ in three districts; 190 ~ 200 ℃ in four districts, screw speed 200 ~ 300 r/min, feeding frequency 18 ~ 25 Hz.
7. a kind of aramid pulp as claimed in claim 6 strengthens the preparation method of expanded flame-retardant polypropylene matrix material; It is characterized in that: in the said step (1) with aramid pulp; Expansion type flame retardant joins in the organic solvent; Stirring rake stirred 3 hours with the 600r/min rotating speed, added silane coupling agent and stirred 10 minutes, and 80 ℃ of air blast oven dry obtained composite flame-retardant agent in 3 hours behind the suction filtration.
8. a kind of aramid pulp as claimed in claim 7 strengthens the preparation method of expanded flame-retardant polypropylene matrix material, and it is characterized in that: said organic solvent is absolute ethyl alcohol, methyl alcohol or toluene.
9. a kind of aramid pulp as claimed in claim 6 strengthens the preparation method of expanded flame-retardant polypropylene matrix material, it is characterized in that: in the step (2) with Vestolen PP 7052, composite flame-retardant agent; Polypropylene grafted maleic anhydride mixes back blend extruding pelletization in parallel parallel dual-screw extruding machine and obtains matrix material, and its expressing technique is 170 ~ 180 ℃ in a district; 180 ~ 200 ℃ in two districts, 190 ~ 210 ℃ in three districts, 190 ~ 200 ℃ in four districts; Screw speed 200 ~ 300 r/min, feeding frequency 18 ~ 25 Hz.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104231515A (en) * | 2014-09-11 | 2014-12-24 | 常州大学 | Anti-friction polypropylene material and preparation method thereof |
| CN104419060A (en) * | 2013-08-29 | 2015-03-18 | 合肥杰事杰新材料股份有限公司 | Continuous organic fiber-filled polypropylene composite material and preparation method thereof |
| CN106750941A (en) * | 2016-12-22 | 2017-05-31 | 阜阳市三郁包装材料有限公司 | Modified polypropylene flame redardant foamed board of a kind of hydridization aramid fiber silica aerogel and preparation method thereof |
| CN107163381A (en) * | 2017-05-24 | 2017-09-15 | 上海彩艳实业有限公司 | Polypropylene fibre halogen-free flame-retardant master batch and its manufacture method |
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| CN101161775A (en) * | 2006-10-09 | 2008-04-16 | 浙江化工科技集团有限公司 | Novel halogen-free environment-friendly type flame-proof polypropylene material |
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| CN104419060A (en) * | 2013-08-29 | 2015-03-18 | 合肥杰事杰新材料股份有限公司 | Continuous organic fiber-filled polypropylene composite material and preparation method thereof |
| CN104419060B (en) * | 2013-08-29 | 2017-09-05 | 合肥杰事杰新材料股份有限公司 | A kind of continuous organic fiber filling polypropylene composite material and preparation method thereof |
| CN104231515A (en) * | 2014-09-11 | 2014-12-24 | 常州大学 | Anti-friction polypropylene material and preparation method thereof |
| CN106750941A (en) * | 2016-12-22 | 2017-05-31 | 阜阳市三郁包装材料有限公司 | Modified polypropylene flame redardant foamed board of a kind of hydridization aramid fiber silica aerogel and preparation method thereof |
| CN107163381A (en) * | 2017-05-24 | 2017-09-15 | 上海彩艳实业有限公司 | Polypropylene fibre halogen-free flame-retardant master batch and its manufacture method |
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| CN102604212B (en) | 2014-04-30 |
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