CN117126508A - Scratch-resistant PC/ABS composite material - Google Patents
Scratch-resistant PC/ABS composite material Download PDFInfo
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- CN117126508A CN117126508A CN202311124012.0A CN202311124012A CN117126508A CN 117126508 A CN117126508 A CN 117126508A CN 202311124012 A CN202311124012 A CN 202311124012A CN 117126508 A CN117126508 A CN 117126508A
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- 229920007019 PC/ABS Polymers 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 230000003678 scratch resistant effect Effects 0.000 title claims abstract description 22
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 44
- 229920005989 resin Polymers 0.000 claims abstract description 39
- 239000011347 resin Substances 0.000 claims abstract description 39
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000012745 toughening agent Substances 0.000 claims abstract description 13
- 239000004417 polycarbonate Substances 0.000 claims description 51
- 229920000515 polycarbonate Polymers 0.000 claims description 31
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical group C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 26
- -1 polytrimethylene carbonate Polymers 0.000 claims description 26
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 23
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 229920000166 polytrimethylene carbonate Polymers 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000005060 rubber Substances 0.000 claims description 9
- VWGKEVWFBOUAND-UHFFFAOYSA-N 4,4'-thiodiphenol Chemical compound C1=CC(O)=CC=C1SC1=CC=C(O)C=C1 VWGKEVWFBOUAND-UHFFFAOYSA-N 0.000 claims description 8
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 8
- 125000001931 aliphatic group Chemical group 0.000 claims description 6
- 125000003118 aryl group Chemical group 0.000 claims description 6
- WWNGFHNQODFIEX-UHFFFAOYSA-N buta-1,3-diene;methyl 2-methylprop-2-enoate;styrene Chemical compound C=CC=C.COC(=O)C(C)=C.C=CC1=CC=CC=C1 WWNGFHNQODFIEX-UHFFFAOYSA-N 0.000 claims description 6
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 229920001897 terpolymer Polymers 0.000 claims description 5
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 4
- ODJQKYXPKWQWNK-UHFFFAOYSA-L 3-(2-carboxylatoethylsulfanyl)propanoate Chemical compound [O-]C(=O)CCSCCC([O-])=O ODJQKYXPKWQWNK-UHFFFAOYSA-L 0.000 claims description 4
- 125000005266 diarylamine group Chemical group 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims 1
- 239000000454 talc Substances 0.000 claims 1
- 239000012752 auxiliary agent Substances 0.000 abstract description 12
- 238000003672 processing method Methods 0.000 abstract 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 20
- 239000000463 material Substances 0.000 description 15
- 238000001035 drying Methods 0.000 description 11
- 238000001125 extrusion Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 229920001296 polysiloxane Polymers 0.000 description 8
- 238000005469 granulation Methods 0.000 description 7
- 230000003179 granulation Effects 0.000 description 7
- 230000005855 radiation Effects 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 235000021419 vinegar Nutrition 0.000 description 4
- 239000000052 vinegar Substances 0.000 description 4
- 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 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000004594 Masterbatch (MB) Substances 0.000 description 3
- 239000002041 carbon nanotube Substances 0.000 description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 239000012994 photoredox catalyst Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 229920000734 polysilsesquioxane polymer Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 description 3
- ODJQKYXPKWQWNK-UHFFFAOYSA-N 3,3'-Thiobispropanoic acid Chemical compound OC(=O)CCSCCC(O)=O ODJQKYXPKWQWNK-UHFFFAOYSA-N 0.000 description 2
- 239000003490 Thiodipropionic acid Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920000402 bisphenol A polycarbonate polymer Polymers 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- PREGVUDYTQAQOA-UHFFFAOYSA-H dioxido-oxo-phenyl-lambda5-phosphane lanthanum(3+) Chemical compound C1=CC=C(C=C1)P(=O)([O-])[O-].C1=CC=C(C=C1)P(=O)([O-])[O-].C1=CC=C(C=C1)P(=O)([O-])[O-].[La+3].[La+3] PREGVUDYTQAQOA-UHFFFAOYSA-H 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229920006225 ethylene-methyl acrylate Polymers 0.000 description 2
- 238000009396 hybridization Methods 0.000 description 2
- 210000003734 kidney Anatomy 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 235000019303 thiodipropionic acid Nutrition 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000010455 vermiculite Substances 0.000 description 2
- 229910052902 vermiculite Inorganic materials 0.000 description 2
- 235000019354 vermiculite Nutrition 0.000 description 2
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000010241 blood sampling Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a scratch-resistant PC/ABS composite material, which comprises 55-80 parts of PC resin, 45-65 parts of ABS resin, 5-10 parts of toughening agent, 0.1-0.5 part of antioxidant, 2-8 parts of compatilizer and 1-5 parts of other auxiliary agents, and can be obtained by a simple processing method.
Description
Technical Field
The invention belongs to the field of polymer modified materials, and relates to a scratch-resistant PC/ABS composite material.
Background
The PC/ABS composite material is a novel plastic alloy material with wider application range, and the plastic alloy material has excellent performance and outstanding performance in various aspects, such as high impact strength, high heat resistance and good mechanical property of dimensional stability; electrical properties of high dielectric strength, low dielectric constant, low dielectric loss, etc.; acid, alkali and solvent corrosion resistance; excellent flame retardancy, and the like; on the basis of the excellent properties, PC/ABS composite materials are widely applied to 1. The automobile industry, particularly used in parts such as instrument panels, bumpers and interior trim of automobiles; 2. the electronics industry, particularly for housings and connectors for monocotyledonous devices; 3. the medical industry, in particular to parts such as syringes and other medical instruments used in medical treatment; 4. the building industry, in particular, is used in window frames and door frames.
PC/ABS plastic alloy is a thermoplastic plastic formed by combining Polycarbonate (Polycarbonate) and acrylonitrile-butadiene-styrene (ABS) and a mixture of Polycarbonate and acrylonitrile-butadiene-styrene (ABS), and the composite material combines the excellent characteristics of two single materials and exerts various performance characteristics of the composite material in the fields.
However, the existing plastic alloy materials of pure PC and ABS still have the defects of the performances, and besides the combination and comprehensive expression of the material characteristics of the two resins, other auxiliary agents are added to meet the use requirement.
The prior art CN109957225A discloses a high-strength scratch-resistant halogen-free flame-retardant PC/ABS composite material and a preparation method thereof, wherein the PC composite material comprises 38-71% of PC resin; 10-34% of ABS resin; 3-5% of thermoplastic polyester elastomer; 5-10% of polyarylphosphate; 0.5 to 3 percent of phenyl rare earth phosphate; 0.5 to 2 percent of metal hybridized polysilsesquioxane; 5-15% of carbon nano tube; 1-5% of a compatilizer; the mixture is suitable for preparing high-strength, scratch-resistant and flame-retardant ultrathin workpieces, can be applied to the fields of notebook computers, tablet computers, smart phones and the like, replaces expensive and heavy metal alloy to be used in high-end electronic products, is a composite material with good processability, high strength, good flame retardance and scratch resistance, but the main property change of the modified composite material taking PC/ABS as a base material main body disclosed above is flame retardance, and the original mechanical property of the composite material needs to be maintained on the premise of not using a conventional flame retardant for simple compounding.
The prior art CN114031919A discloses a preparation method of scratch-resistant low-odor highlight black PC/ABS composite material, which comprises 50-75 parts of polycarbonate, 15-45 parts of ABS resin, 2-12 parts of toughening agent, 1-5 parts of compatilizer, 0.5-5 parts of scratch-resistant master batch, 1-3 parts of black master batch, 0.1-0.5 parts of antioxidant and 0.1-0.5 parts of light stabilizer, and the performances of low density, scratch resistance, weather resistance, low odor, spraying-free performance, balance performance of rigidity/toughness and the like are required to be met, the bright black appearance of the material is influenced by general components for improving scratch resistance, and the problem of odor is caused by free components for general additives.
At present, less PC/ABS composite materials are used in the medical industry focusing on improving scratch resistance, but such demands are not minority, such as cups, drums, bottles, and dental instruments, drug containers and surgical instruments for medical use for high energy radiation sterilization, retort and bake sterilization, but also blood sampling specimens, blood oxygenators, surgical instruments, kidney dialyzers, medical packages, membrane commutators; or even also as artificial organs such as artificial kidneys, lungs, etc., the present invention has been directed to disclosing a PC/ABS composite with scratch resistance and meeting general pharmaceutical biocompatibility.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a scratch-resistant PC/ABS composite material.
In order to achieve the aim, the invention adopts the following technical scheme that the scratch-resistant PC/ABS composite material comprises the following components in parts by weight:
preferably, the composition comprises the following components in parts by weight:
preferably, the PC resin is a mixture of aliphatic polycarbonate and aromatic polycarbonate.
Preferably, the weight average molecular weight of the ABS resin is 180000 ～ 200000g/mol, and the rubber content is 25-40%.
By adopting the technical scheme, the PC/ABS resin base material is modified by adding the toughening agent, the antioxidant, the compatilizer and some other proper auxiliary agents, the obtained modified PC/ABS resin has obvious mechanical properties such as high impact strength, high heat resistance, good dimensional stability and the like, meanwhile, the bonding force among various polymers is increased to form a stable structure, the disperse phase and the continuous phase are uniform, the addition of each component can not inhibit the performance effect of a single component, the surface of the obtained resin is smooth, and the radiation resistance and the anti-fat grade are also improved.
Preferably, the toughening agent is a styrene compound or a polyolefin compound, and comprises: one or more of styrene-butadiene copolymer, methyl methacrylate-butadiene-styrene terpolymer and ethylene-vinyl acetate copolymer.
By adopting the technical scheme, the toughening agent can improve the brittleness of the PC/ABS resin added with other auxiliary agents, and improve the bearing strength while enhancing the shock resistance.
Preferably, the antioxidant comprises: one or more of thiobisphenol, thiodipropionate, p-phenylenediamine, and secondary diarylamines.
Preferably, the compatilizer is maleic anhydride grafted ABS, and the grafting rate is 1.8%.
By adopting the technical scheme, the problems of yellowing, embrittlement and the like caused by oxidization of the whole resin are effectively delayed, the service life is effectively prolonged, meanwhile, the components and the compatilizer cooperate, the surface of the resin can be elastically amplified on the premise of keeping the toughness of the resin, the comprehensive resin has the shock resistance, and mechanical scratch is difficult to form on the surface of the resin by external force.
Preferably, the other auxiliary agent is at least one of quartz powder, whisker silicon and talcum powder.
By adopting the technical scheme, other auxiliary agents can be used for regulating the lubricating degree of other components, so that the components are better and more firmly combined, the condition of uneven interfaces is avoided, the problems that the reinforced PC/ABS resin is overlarge in melt viscosity, difficult to process and incapable of being made into ultrathin parts are effectively solved, and the reinforced PC/ABS resin is wider in application in medical treatment and other fields requiring extreme thickness.
Preferably, the aliphatic polycarbonate is at least one of polytrimethylene carbonate or polyethylene carbonate, and the aromatic polycarbonate is bisphenol a type polycarbonate.
Preferably, the mixing ratio of the aliphatic polycarbonate to the aromatic polycarbonate is 1:2.
By adopting the technical scheme, the PC resin mixed by compounding can improve the biocompatibility, radiation resistance and fat resistance of the PC/ABS resin.
The invention has the beneficial effects that:
1) The PC resin and the ABS resin have the performance advantages, and the PC resin and the ABS resin are used as base material resins for further performance optimization, so that the high biocompatibility, radiation resistance and fat resistance of the PC resin and the ABS resin are improved.
2) The environment adaptability is strong, and the processing requirements in various fields can be met: such as the resistance to agents in medical environments, the extreme thickness of workpieces in the electronics industry, and the rigidity performance requirements in the construction industry, as well as transparency or multi-color compatibility in the automotive trim field, etc.
3) Long service life and wide adaptability to various processing conditions.
In conclusion, the PC/ABS resin has the characteristics of scratch resistance, high biocompatibility, radiation resistance, high lipid resistance, high environmental adaptability, long service life and less limitation of processing conditions.
The specific embodiment is as follows:
in order to better embody the purposes, technical schemes and beneficial effects of the invention, the invention is further described below by combining examples, wherein the materials used in the examples are all parts by weight except for specific descriptions.
Example 1:
78 parts of PC resin, including 26 parts of polytrimethylene carbonate and 52 parts of bisphenol A type polycarbonate;
65 parts of ABS resin, with a weight average molecular weight of 190000g/mol and a rubber content of 35%;
10 parts of a toughening agent, namely a styrene-butadiene copolymer;
0.5 parts of antioxidant and thiobisphenol;
compatibilizer, maleic anhydride grafted ABS with grafting ratio of 1.8% and 8 parts
Other auxiliary agents and 1 part of quartz powder.
Adding the polytrimethylene carbonate, bisphenol A type polycarbonate, ABS resin, styrene-butadiene copolymer, thiobisphenol and maleic anhydride grafted ABS in the proportion into a high-speed mixer, mixing for standby, adding the mixed materials into a main feeding bin of a co-rotating parallel double-screw extruder through a feeding screw, adding quartz powder into a charging barrel of the extruder for heating in sections, and obtaining the PC/ABS resin through melt extrusion, granulation and drying treatment.
Example 2:
66 parts of PC resin, including 22 parts of polytrimethylene carbonate and 44 parts of bisphenol A type polycarbonate;
50 parts of ABS resin, wherein the weight average molecular weight is 190000g/mol, and the rubber content is 35%;
7 parts of a toughening agent, namely a styrene-butadiene copolymer;
0.3 parts of antioxidant and thiobisphenol;
a compatilizer, maleic anhydride grafted ABS, wherein the grafting rate is 1.8% and 6 parts;
3 parts of other auxiliary agents and quartz powder.
Adding the polytrimethylene carbonate, bisphenol A type polycarbonate, ABS resin, styrene-butadiene copolymer, thiobisphenol and maleic anhydride grafted ABS in the proportion into a high-speed mixer, mixing for standby, adding the mixed materials into a main feeding bin of a co-rotating parallel double-screw extruder through a feeding screw, adding quartz powder into a charging barrel of the extruder for heating in sections, and obtaining the PC/ABS resin through melt extrusion, granulation and drying treatment.
Example 3:
75 parts of PC resin, including 25 parts of polyethylene carbonate and 50 parts of bisphenol A type polycarbonate;
63 parts of ABS resin, wherein the weight average molecular weight is 180000g/mol, and the rubber content is 40%;
6 parts of toughening agent, methyl methacrylate-butadiene-styrene terpolymer;
0.2 parts of antioxidant and thiodipropionic acid vinegar;
a compatilizer, maleic anhydride grafted ABS, wherein the grafting rate is 1.8% and 5 parts;
4 parts of other auxiliary agents and talcum powder.
Adding polyethylene carbonate, bisphenol A polycarbonate, ABS resin, methyl methacrylate-butadiene-styrene terpolymer, thiodipropionate vinegar and maleic anhydride grafted ABS in the proportion into a high-speed mixer, mixing for standby, adding the mixture into a main feeding bin of a co-rotating parallel double-screw extruder through a feeding screw, adding talcum powder into a barrel of the extruder for heating in sections, and obtaining the PC/ABS resin after melt extrusion, granulation and drying treatment.
Example 4:
60 parts of PC resin, including 20 parts of polyethylene carbonate and 40 parts of bisphenol A type polycarbonate;
55 parts of ABS resin, wherein the weight average molecular weight is 200000g/mol, and the rubber content is 25%;
8 parts of a toughening agent, namely ethylene-vinyl acetate copolymer;
0.4 parts of antioxidant, p-phenylenediamine;
a compatilizer, maleic anhydride grafted ABS, wherein the grafting rate is 1.8% and 5 parts;
and 2 parts of other auxiliary agents and whisker silicon.
Adding polyethylene carbonate, bisphenol A polycarbonate, ABS resin, ethylene-vinyl acetate copolymer, p-phenylenediamine and maleic anhydride grafted ABS in the above proportions into a high-speed mixer, mixing for standby, adding the mixed materials into a main feeding bin of a co-rotating parallel double-screw extruder through a feeding screw, adding whisker silicon into a barrel of the extruder for heating in sections, and obtaining the PC/ABS resin through melt extrusion, granulation and drying treatment.
Example 5:
60 parts of PC resin, including 20 parts of poly (trimethylene carbonate) and 40 parts of bisphenol A type polycarbonate;
55 parts of ABS resin, the weight average molecular weight is 190000g/mol, and the rubber content is 30%.
7 parts of a toughening agent, namely a styrene-butadiene copolymer;
antioxidant, diarylamines 0.3 parts
Compatibilizer, maleic anhydride grafted ABS with grafting ratio of 1.8% and 7 parts
4 parts of other auxiliary agents and quartz powder.
Adding the polytrimethylene carbonate, bisphenol A type polycarbonate, ABS resin, styrene-butadiene copolymer, secondary diarylamine and maleic anhydride grafted ABS in the proportion into a high-speed mixer, mixing for standby, adding the mixed materials into a main feeding bin of a co-rotating parallel double-screw extruder through a feeding screw, adding quartz powder into a charging barrel of the extruder for heating in sections, and obtaining the PC/ABS resin through melt extrusion, granulation and drying treatment.
Example 6:
69 parts of PC resin, including 23 parts of polyethylene carbonate and 46 parts of bisphenol A type polycarbonate;
60 parts of ABS resin, wherein the weight average molecular weight is 200000g/mol, and the rubber content is 35%;
6 parts of toughening agent, ethylene-vinyl acetate copolymer;
0.2 parts of antioxidant and thiobisphenol;
a compatilizer, maleic anhydride grafted ABS, wherein the grafting rate is 1.8% and 7 parts;
and 3 parts of other auxiliary quartz powder.
Adding polyethylene carbonate, bisphenol A type polycarbonate, ABS resin, ethylene-vinyl acetate copolymer, thiobisphenol and maleic anhydride grafted ABS in the proportion into a high-speed mixer, mixing for standby, adding the mixed material into a main feeding bin of a homodromous parallel double-screw extruder through a feeding screw, adding quartz powder into a charging barrel of the extruder for heating in sections, and obtaining the PC/ABS resin through melt extrusion, pelleting and drying.
Example 7:
57 parts of PC resin comprising 19 parts of polytrimethylene carbonate and 38 parts of bisphenol A type polycarbonate;
45 parts of ABS resin, wherein the weight average molecular weight is 190000g/mol, and the rubber content is 40%;
5 parts of a toughening agent, methyl methacrylate-butadiene-styrene terpolymer;
0.1 part of antioxidant and thiodipropionic acid vinegar;
a compatilizer, maleic anhydride grafted ABS, wherein the grafting rate is 1.8% and 8 parts;
and 5 parts of other auxiliary agents and whisker silicon.
Adding the polytrimethylene carbonate, bisphenol A type polycarbonate, ABS resin, methyl methacrylate-butadiene-styrene, thiodipropionate vinegar and maleic anhydride grafted ABS in the proportion into a high-speed mixer, mixing for standby, adding the mixed materials into a main feeding bin of a parallel double-screw extruder through a feeding screw, adding whisker silicon into the main feeding bin of the extruder for heating in sections, and obtaining the PC/ABS resin after melt extrusion, granulation and drying treatment.
Comparative example 1:
weighing 65% of PC resin, 17% of ABS resin and 3% of thermoplastic polyester elastomer; 5% of carbon nano tube, 4% of EMA, 0.5% of PX-220% of lanthanum phenylphosphonate and 0.5% of metal titanium hybridization polysilsesquioxane, drying, mixing PC, ABS, thermoplastic polyester elastomer, EMA, PX-220, lanthanum phenylphosphonate and metal titanium hybridization polysilsesquioxane at high speed for 20min, then feeding into a main feeding bin of a double-screw extruder, wherein the rotating speed of the main feeding screw is 25rpm, placing the carbon nano tube into a side feeding bin of the double-screw extruder, the rotating speed of the side feeding screw is 30rpm, adding into a main barrel of the extruder through the feeding screw, controlling the temperature of each heating section of the main barrel, and obtaining the product after the processes of melting extrusion, granulation, drying and the like from a feeding inlet to a machine head outlet at 200 ℃, 220 ℃, 230 ℃, 235 ℃, 245 ℃, 250 ℃.
Comparative example 2:
50 parts of base material polycarbonate is added into an internal mixer, banburying is carried out for 15 minutes at 245 ℃, 15 parts of high molecular weight polysiloxane with active groups and 35 parts of long chain modified high molecular weight polysiloxane are added into the internal mixer, banburying is carried out for 30 minutes at 245 ℃, then the internal mixer is used for carrying out melt extrusion, and the required scratch-resistant master batch is obtained after cooling in a water tank, granulating and drying. The processing technological parameters of the double-screw extruder and the processing temperature of each zone are as follows: the diameter of the screw is 35mm, the length-diameter ratio is 40, the temperatures of all areas of the extruder are 230 ℃, 240 ℃, 255 ℃, 265 ℃, 270 ℃, 260 ℃, 255 ℃ and the screw rotating speed is 350-450r/min. The high molecular weight polysiloxane with active groups is vinyl terminated high molecular weight polysiloxane 110 silicone rubber; the long-chain modified high molecular weight polysiloxane is an addition product of hydrogen-containing polysiloxane and 1-dodecaolefin, and the molecular weight is 80-120 ten thousand. Specifically, 1-dodecaolefin and hydrogen-containing polysiloxane are used as raw materials, the molecular weight of the hydrogen-containing polysiloxane is between 20 and 30 ten thousand, the mass fraction of hydrogen is between 0.25 and 0.3 percent, chloroplatinic acid-isopropanol is used as a catalyst, the reaction is carried out for 6 hours at 75 to 80 ℃, and after the reaction is finished, micromolecules are removed by spin distillation at 120 ℃ until no fraction is distilled.
Comparative example 3:
45 parts of PC, 55 parts of ABS, 10 parts of metallic pigment, 8 parts of maleic anhydride grafted ABS, 0.1 part of antioxidant 2246 and 0.1 part of lubricant zinc stearate, and the metallic pigment is mixed for 5 minutes at 1200 revolutions per minute in a mixer consisting of 2 parts of vermiculite powder, 8 parts of titanium dioxide and 2 parts of silicone oil. The particle size of the vermiculite powder is 15 mu m, and the particle size of the titanium dioxide is 0.2 mu m. The preparation method comprises the following steps: sequentially adding a metal pigment, a compatilizer, PC, ABS, an antioxidant and a lubricant into high-speed mixing at a rotating speed of 900 rpm, mixing for 8 minutes to prepare a premix, feeding the premix into a double-screw extruder, and extruding, water-cooling, granulating and drying to prepare the metal texture and scratch-resistant PC/ABS composite material, wherein the temperatures of all areas of the double-screw extruder are as follows: the temperature of the first area is 200 ℃, the temperature of the second area is 210 ℃, the temperature of the third area is 210 ℃, the temperature of the fourth area is 220 ℃, the temperature of the fifth area is 220 ℃, the temperature of the sixth area is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
The testing method comprises the following steps:
(1) notched impact strength of a simply supported beam, reference standard ISO 179/1eA;
(2) cantilever beam notched impact strength, reference standard ASTM D256;
(3) dart impact with meter (23 ℃, total Energy), reference standard ASTM D3763;
(4) scratch resistance test (V scoring speed = 1000 MM/min, grid size 4 MM), reference standard PV3952;
(5) biocompatibility test ISO10993 and GB/T1688;
(6) radiation resistance test: mainly examining the appearance change, weight loss and cracking degree and the change of compression strength and modulus of several resins after 1.5MeV electron irradiation;
the results are shown in the following table:
as can be seen from table 1, examples 1 and 7 have remarkable performance advantages over comparative examples 1 to 3, but the component ratios of examples 2 to 6 have better performance properties and maintain a balance of aspects and a high level when compared with examples 2 to 6 in parallel. Examples 1 to 7 have significant advantages in terms of impact properties, scratch resistance and biocompatibility, over the existing requirements for neutralization to meet other requirements: other PC/ABS composite materials such as appearance, flame retardance and the like have more prominent technical advantages in terms of scratch resistance.
In conclusion, the PC/ABS composite material provided by the invention has the characteristics of high scratch resistance, high biocompatibility, strong radiation resistance, high lipid resistance, strong environmental adaptability, long service life and few processing conditions.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The scratch-resistant PC/ABS composite material is characterized by comprising the following components in parts by weight:
2. the scratch resistant PC/ABS composite according to claim 1 comprising the following components in parts by weight:
3. the scratch resistant PC/ABS composite of claim 1 wherein the PC resin is a mixture of aliphatic polycarbonate and aromatic polycarbonate.
4. The scratch-resistant PC/ABS composite material according to claim 1, wherein the weight average molecular weight of the ABS resin is 180000 ～ 200000g/mol, and the rubber content is 25-40%.
5. The scratch resistant PC/ABS composite of claim 1 wherein the toughening agent is a styrenic compound or a polyolefin compound comprising: one or more of styrene-butadiene copolymer, methyl methacrylate-butadiene-styrene terpolymer and ethylene-vinyl acetate copolymer.
6. The scratch resistant PC/ABS composite of claim 1 wherein the antioxidant comprises: one or more of thiobisphenol, thiodipropionate, p-phenylenediamine, and secondary diarylamines.
7. The scratch resistant PC/ABS composite of claim 1 wherein the compatibilizer is maleic anhydride grafted ABS with a grafting ratio of 1.8%.
8. The scratch-resistant PC/ABS composite of claim 1 wherein the other aid is at least one of quartz powder, whisker silicon, talc.
9. A scratch resistant PC/ABS composite according to claim 3 wherein the aliphatic polycarbonate is at least one of polytrimethylene carbonate or polyethylene carbonate; the aromatic polycarbonate is bisphenol A type polycarbonate.
10. A scratch resistant PC/ABS composite according to claim 3 wherein the mixing ratio of aliphatic polycarbonate to aromatic polycarbonate is 1:2.
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