CN114773818A - Polycarbonate composition and preparation method and application thereof - Google Patents
Polycarbonate composition and preparation method and application thereof Download PDFInfo
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- CN114773818A CN114773818A CN202210298785.XA CN202210298785A CN114773818A CN 114773818 A CN114773818 A CN 114773818A CN 202210298785 A CN202210298785 A CN 202210298785A CN 114773818 A CN114773818 A CN 114773818A
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- polycarbonate
- polycarbonate composition
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- titanium oxide
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- 239000004417 polycarbonate Substances 0.000 title claims abstract description 70
- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 70
- 239000000203 mixture Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title abstract description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000945 filler Substances 0.000 claims abstract description 23
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011521 glass Substances 0.000 claims abstract description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000010703 silicon Substances 0.000 claims abstract description 18
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 18
- 239000003365 glass fiber Substances 0.000 claims description 18
- 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 claims description 14
- 239000003063 flame retardant Substances 0.000 claims description 14
- 239000003963 antioxidant agent Substances 0.000 claims description 10
- 230000003078 antioxidant effect Effects 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000003381 stabilizer Substances 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 7
- 239000002216 antistatic agent Substances 0.000 claims description 6
- 239000004014 plasticizer Substances 0.000 claims description 6
- 239000003086 colorant Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000005368 silicate glass Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000005407 aluminoborosilicate glass Substances 0.000 claims description 2
- 229920000402 bisphenol A polycarbonate polymer Polymers 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000006082 mold release agent Substances 0.000 claims description 2
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 claims description 2
- 239000004599 antimicrobial Substances 0.000 claims 1
- 239000004005 microsphere Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 238000009826 distribution Methods 0.000 abstract description 3
- 229920006351 engineering plastic Polymers 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000003242 anti bacterial agent Substances 0.000 description 9
- 239000000155 melt Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 230000035882 stress Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000007062 hydrolysis Effects 0.000 description 6
- 238000006460 hydrolysis reaction Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- 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 2
- 239000004593 Epoxy Substances 0.000 description 2
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- JLHMJWHSBYZWJJ-UHFFFAOYSA-N 1,2-thiazole 1-oxide Chemical class O=S1C=CC=N1 JLHMJWHSBYZWJJ-UHFFFAOYSA-N 0.000 description 1
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 description 1
- ZILVNHNSYBNLSZ-UHFFFAOYSA-N 2-(diaminomethylideneamino)guanidine Chemical compound NC(N)=NNC(N)=N ZILVNHNSYBNLSZ-UHFFFAOYSA-N 0.000 description 1
- QSRJVOOOWGXUDY-UHFFFAOYSA-N 2-[2-[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]ethoxy]ethoxy]ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCCOCCOCCOC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 QSRJVOOOWGXUDY-UHFFFAOYSA-N 0.000 description 1
- SSADPHQCUURWSW-UHFFFAOYSA-N 3,9-bis(2,6-ditert-butyl-4-methylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound CC(C)(C)C1=CC(C)=CC(C(C)(C)C)=C1OP1OCC2(COP(OC=3C(=CC(C)=CC=3C(C)(C)C)C(C)(C)C)OC2)CO1 SSADPHQCUURWSW-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241000209020 Cornus Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- 244000178289 Verbascum thapsus Species 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000001343 alkyl silanes Chemical class 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical group 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 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- ARYZCSRUUPFYMY-UHFFFAOYSA-N methoxysilane Chemical compound CO[SiH3] ARYZCSRUUPFYMY-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000008029 phthalate plasticizer Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 230000036561 sun exposure Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
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 belongs to the technical field of engineering plastics, and discloses a polycarbonate composition, and a preparation method and application thereof. The polycarbonate composition comprises the following components in parts by weight: 58-95 parts of polycarbonate, 8-40 parts of glass filler and 0.1-1 part of titanium oxide. The invention also provides a preparation method of the polycarbonate composition, and the polycarbonate composition is applied to outdoor CPE. According to the polycarbonate composition, titanium oxide with specific silicon content is used, the distribution interval of the glass filler is regulated and controlled, the negative influence of the length of the glass filler on flame retardance is reduced, stress concentration is dispersed, and internal stress is reduced, so that the flame retardance stability of the material is improved, and the performance can be kept stable in a damp-heat environment.
Description
Technical Field
The invention relates to the technical field of engineering plastics, and particularly relates to a polycarbonate composition, and a preparation method and application thereof.
Background
Polycarbonate (PC) is an engineering plastic with excellent performance, has good comprehensive performance, high mechanical strength, good impact toughness, stable size, good heat resistance and good electrical insulation, and can be widely applied to the fields of household appliances, digital products, IT products and the like.
At present, with the tendency of highlight, large size and thin wall of household appliances or equipment, a resin material is required to have higher mechanical strength. The glass fiber has the properties of high tensile strength, large impact energy absorption, good elastic coefficient and heat resistance, low price and the like, and is often used as a reinforcing phase to modify a resin material. The strengthening mechanism is that the stress is well dispersed by virtue of the excellent interface bonding force between the matrix phase and the fiber, so that the glass fiber with excellent performance bears most of the stress, thereby improving the mechanical property of the composite material.
However, in the glass fiber reinforced flame retardant thermoplastic material, the candle wick effect is easy to generate, although the material is not easy to burn, the material is influenced by the glass fiber, so that the local high temperature is generated, the burning point is generated, and once the material is burnt, the straw effect of the glass fiber is more obvious, and then the large-area burning is formed. Therefore, the remaining length of the glass fiber can adversely affect the flame retardancy, too long glass fiber can reduce the flame retardancy of the material, leading to the combustion test failure of the material, and too short glass fiber can affect the mechanical properties of the material. And the glass fiber point is used as a stress concentration point in a damp and hot environment, so that the mechanical strength is reduced rapidly, and the application of the flame-retardant thermoplastic material in the outdoor or damp and hot environment is limited.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a polycarbonate composition, a preparation method and application thereof, so as to overcome the technical problem that the reserved length of glass fiber in the existing composite material is difficult to reasonably control through a process, and the glass fiber reinforced flame-retardant thermoplastic material can be effectively applied in outdoor or damp-heat environments.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a polycarbonate composition, which comprises the following components, by weight: 58-95 parts of polycarbonate, 8-40 parts of glass filler and 0.1-1 part of titanium oxide;
the silicon content of the polycarbonate composition is 4ppm to 200 ppm;
the method for detecting the silicon content in the polycarbonate composition comprises the following steps: GB/T13748.20-2009 ICP-AES is used for determining the element content;
the weight-average molecular weight of the polycarbonate is 20000-30000.
In the polycarbonate composition, titanium oxide with specific silicon content is added to provide proper surface hardness, part of glass filler is ground off in the screw extrusion process, and the distribution of the glass filler is adjusted by adjusting the specific titanium oxide content, so that the flame retardance reduction caused by the glass fiber wick effect is reduced; and the titanium oxide disperses stress concentration between the glass filler and the polycarbonate with a specific weight average molecular weight, internal stress is reduced, and the performance stability of the polycarbonate composition is kept in the damp-heat aging process.
As a preferred embodiment of the polycarbonate composition, the polycarbonate composition comprises the following components in parts by weight: 79-95 parts of polycarbonate, 8-20 parts of glass filler and 1 part of titanium oxide.
In a preferred embodiment of the polycarbonate composition of the present invention, the polycarbonate is a bisphenol A polycarbonate.
In a preferred embodiment of the polycarbonate composition of the present invention, the titanium oxide has a silicon content of 400ppm to 2000 ppm.
In a preferred embodiment of the polycarbonate composition of the present invention, the glass filler is at least one of an alkali-free aluminoborosilicate glass, a soda-lime silicate glass, and a soda-silicate glass.
As a preferred embodiment of the polycarbonate composition of the present invention, the glass filler is at least one of glass fiber, milled glass fiber, and glass beads.
The polycarbonate composition according to the preferred embodiment of the present invention further comprises at least one of an antioxidant, a stabilizer, a flame retardant, a lubricant, an anti-dripping agent, a mold release agent, an auxiliary filler, a plasticizer, an antistatic agent, an antibacterial agent, and a colorant. So as to further promote the stability of the performance of the polycarbonate composition in a damp and hot environment.
Specifically, the antioxidant can be antioxidant 1076, antioxidant 1010, antioxidant 2246, antioxidant 245, antioxidant 168, antioxidant B-CAP, antioxidant PEP-36, antioxidant S-680, antioxidant 627 and the like, and the adding amount of the antioxidant is 0.08-0.6 part.
The stabilizer is at least one of stabilizer 234, stabilizer 5050H, stabilizer 5411, stabilizer 531 and stabilizer 328, and the addition amount of the stabilizer is 0-1 part.
The flame retardant can be phosphate flame retardant, sulfonate flame retardant, brominated polycarbonate and the like, and the addition amount of the flame retardant is 0.1-30 parts.
The anti-dripping agent can be polytetrafluoroethylene anti-dripping agent, and the addition amount of the anti-dripping agent is 0.1-1 part.
The lubricant can be a polytetrafluoroethylene lubricant, a polyethylene epitaxy lubricant, or a silicone lubricant, and the amount of the lubricant added is 0 to 1 part.
The release agent can be PPA release agent, montan wax release agent, silicon release agent and the like, and the addition amount of the release agent is 0-2 parts.
The auxiliary filler can be talcum powder, kaolin, clay, crystal whisker, diatomite and the like; the filler may be one without any surface treatment or one with a coating treatment, for example, alkyl surface coating, epoxy surface treatment, amide surface treatment, hydroxy silicone oil, alkyl silane, methoxy silane, sulfonic acid group, etc., and the amount of the filler added is 0.1 to 50 parts.
The plasticizer is at least one of dibasic acid ester plasticizer, phthalate plasticizer and epoxy plasticizer, and the addition amount of the plasticizer is 0-10 parts.
The antistatic agent can be polyether antistatic agent and monoglyceride antistatic agent, and the addition amount of the antistatic agent is 0.1-30 parts.
The antibacterial agent can be silver ion antibacterial agent, acylaniline antibacterial agent, imidazole antibacterial agent, thiazole antibacterial agent, isothiazolone derivative, quaternary ammonium salt, biguanidine antibacterial agent, phenol antibacterial agent and the like, and the addition amount of the antibacterial agent is 0.1-5 parts.
The colorant can be carbon black, titanium dioxide, phthalocyanine blue, anthraquinone red and the like, and the addition amount of the colorant is 0.1-5 parts.
In a second aspect, the present invention also provides a method for preparing the polycarbonate composition, comprising the following steps:
and melting and mixing the components in parts by weight, granulating, cooling and drying to obtain the composite material.
In a preferred embodiment of the method for producing a polycarbonate composition of the present invention, the melting temperature is 240 to 260 ℃.
Finally, the polycarbonate composition has good heat and humidity stability, and is applied to outdoor CPE which is used in a plurality of rain and sun exposure environments.
Compared with the prior art, the invention has the following beneficial effects:
according to the polycarbonate composition, titanium oxide with specific silicon content is added, the distribution interval of the glass filler is regulated and controlled, the negative influence of the length of the glass filler on flame retardance is reduced, stress concentration is dispersed, and internal stress is reduced, so that the flame retardance stability of the material is improved, and the performance can be kept stable in a damp-heat environment.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to the following examples. It should be understood by those skilled in the art that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The test methods used in the examples are all conventional methods unless otherwise specified; the materials, reagents and the like used are commercially available unless otherwise specified.
In the following examples, the method for testing the abrasion resistance of the polycarbonate composition was as follows:
(1) flame retardancy test
The sample was injection molded into (125. + -. 5 mm). times. (13.0. + -. 0.5 mm). times. (1.5. + -. 0.15mm) specimens, adjusted at 23. + -. 2 ℃ for 48 hours at 50. + -. 5% RH. The flame retardant rating was judged using the method of UL 94.
(2) Hydrolysis resistance test
The sample was injection-molded into a (125. + -. 5mm) × (13.0. + -. 0.5mm) × (1.5. + -. 0.15mm) specimen, which was put in a moist heat aging chamber of 90 ℃ and 95 ℃ for 500 hours, taken out and burned according to UL94 test, and the rate of change of the melt index was measured after crushing.
The melt index change rate is (melt index after aging-initial melt index)/initial melt index × 100%.
The melt index is the melt index which is determined according to standard ISO 1133: 2005, at 230 ℃/2.16 kg.
The evaluation of "good" means that the melt index change rate is less than or equal to 20 percent and the flame retardant grade is unchanged, the evaluation of "good" means that the melt index change rate is less than or equal to 30 percent and the flame retardant grade is unchanged, and the evaluation of "poor" means that the melt index change rate is more than 30 percent and the flame retardant grade is reduced.
(3) Silicon content detection
The following method for detecting the silicon content in the titanium oxide and polycarbonate composition comprises the following steps: GB/T13748.20-2009 ICP-AES.
The following examples and comparative examples illustrate the raw materials but are not limited to these materials:
polycarbonate 1: aromatic polycarbonate with weight-average molecular weight of 20000, the brand number is PC 7020PJ, Mitsubishi Japan;
polycarbonate 2: an aromatic polycarbonate having a weight average molecular weight of 28000 and having the designation FN2200 available from Japan;
polycarbonate 3: an aromatic polycarbonate having a weight average molecular weight of 10000, having a designation MD1500, available from japan;
polycarbonate 4: an aromatic polycarbonate having a weight average molecular weight of 40000, having a designation of 7030PJ, available from Sanyo Japan;
antioxidant 1: antioxidant 168, commercially available, was used in parallel experiments with the same commercially available product;
and (2) antioxidant: antioxidant 627, commercially available, the same commercially available product was used in parallel experiments;
glass filler: glass fibers ECS13-3.0-T436W, available from boulder group;
titanium oxide 1, R103, silicon content 400ppm, available from dupont;
titanium oxide 2, R105, silicon content 1000ppm, available from dupont;
titanium oxide 3, 2233, silicon content 2000ppm, available from cornus;
titanium oxide 4, PC-3, with a silicon content of 200ppm, available from Nippon stone;
titanium oxide 5, RL601, silicon content 2500ppm, purchased from Tetradacon python.
The compositions of the polycarbonate compositions of examples 1 to 8 and comparative examples 1 to 6 are shown in Table 1.
The preparation method of the polycarbonate compositions of the examples 1 to 8 and the comparative examples 1 to 6 comprises the following steps:
the polycarbonate and the titanium oxide are uniformly mixed in a high-speed mixer according to the proportion, the rotating speed of the high-speed mixer is 450-500 rpm, the mixture is added into a double-screw extruder, glass fiber is added into a side feeding port, the mixture is melted and mixed at the temperature of 240-260 ℃, and then the polycarbonate composition is obtained after granulation, cooling and drying.
TABLE 1 polycarbonate compositions (parts by weight) and test results
The polycarbonate compositions of examples 1-8 have good flame retardant properties and stable resistance to wet heat hydrolysis, and are suitable for outdoor CPE.
Compared with the polycarbonate composition of the example 1, titanium oxide is not added in the polycarbonate composition of the comparative example 1, the product is resistant to hydrolysis difference, and the melt index change rate is higher than 30 percent; in the polycarbonate composition of comparative example 2, no glass filler was added, and the resistance to wet heat hydrolysis of the product was unstable.
In the polycarbonate compositions of comparative examples 3 and 4, aromatic polycarbonates having weight average molecular weights of 10000 and 40000, respectively, were used, as compared with example 1, and the flame retardancy and the resistance to wet heat hydrolysis were poor.
In the polycarbonate compositions of comparative examples 5 and 6, titanium oxide having a silicon content of 200ppm and a silicon content of 2500ppm were used, respectively, as compared with example 1, and the flame retardance and resistance to wet heat hydrolysis were poor.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The polycarbonate composition is characterized by comprising the following components in parts by weight: 58-95 parts of polycarbonate, 8-40 parts of glass filler and 0.1-1 part of titanium oxide;
the silicon content of the polycarbonate composition is 4ppm to 200 ppm;
the weight-average molecular weight of the polycarbonate is 20000-30000.
2. The polycarbonate composition according to claim 1, comprising the following components in parts by weight: 79-95 parts of polycarbonate, 8-20 parts of glass filler and 1 part of titanium oxide.
3. The polycarbonate composition of claim 1 or 2, wherein the polycarbonate is a bisphenol a polycarbonate.
4. The polycarbonate composition of claim 1, wherein the titanium oxide has a silicon content of 400ppm to 2000 ppm.
5. The polycarbonate composition of claim 1, wherein the glass filler is at least one of an alkali-free aluminoborosilicate glass, a soda-lime silicate glass, and a soda-silicate glass.
6. The polycarbonate composition of claims 1 or 4, wherein the glass filler is at least one of glass fibers, milled glass fibers, and glass microspheres.
7. The polycarbonate composition of claim 1, further comprising at least one of an antioxidant, a stabilizer, a flame retardant, a lubricant, an anti-drip agent, a mold release agent, a plasticizer, an auxiliary filler, an antistatic agent, an antimicrobial agent, and a colorant.
8. The method of any one of claims 1 to 7, comprising the steps of:
and melting and mixing the components in parts by weight, granulating, cooling and drying to obtain the composite material.
9. The method of claim 8, wherein the melting temperature is 240 ℃ to 260 ℃.
10. Use of the polycarbonate composition of any of claims 1-7 in outdoor CPE.
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