CN114921078A - Transparent PC/PBT alloy and preparation method and application thereof - Google Patents
Transparent PC/PBT alloy and preparation method and application thereof Download PDFInfo
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- CN114921078A CN114921078A CN202210257765.8A CN202210257765A CN114921078A CN 114921078 A CN114921078 A CN 114921078A CN 202210257765 A CN202210257765 A CN 202210257765A CN 114921078 A CN114921078 A CN 114921078A
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- pbt
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- 239000000956 alloy Substances 0.000 title claims abstract description 50
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 50
- 229920006778 PC/PBT Polymers 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims description 8
- 239000011347 resin Substances 0.000 claims abstract description 97
- 229920005989 resin Polymers 0.000 claims abstract description 97
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000004417 polycarbonate Substances 0.000 claims description 83
- 229920000515 polycarbonate Polymers 0.000 claims description 75
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000000314 lubricant Substances 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 11
- 238000006116 polymerization reaction Methods 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 55
- 230000000052 comparative effect Effects 0.000 description 17
- 239000002904 solvent Substances 0.000 description 17
- 239000000126 substance Substances 0.000 description 13
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 10
- -1 polybutylene terephthalate Polymers 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 238000002834 transmittance Methods 0.000 description 10
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 8
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 8
- 239000012964 benzotriazole Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 239000003063 flame retardant Substances 0.000 description 7
- 230000000717 retained effect Effects 0.000 description 6
- 235000014113 dietary fatty acids Nutrition 0.000 description 5
- 239000000194 fatty acid Substances 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- 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 4
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 4
- 150000004665 fatty acids Chemical class 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000005227 gel permeation chromatography Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 239000012745 toughening agent Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000012965 benzophenone Substances 0.000 description 3
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- WPMYUUITDBHVQZ-UHFFFAOYSA-M 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=CC(CCC([O-])=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-M 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 2
- 229920000402 bisphenol A polycarbonate polymer Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 239000002198 insoluble material Substances 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 229940116351 sebacate Drugs 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 239000010414 supernatant solution Substances 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- KJYSXRBJOSZLEL-UHFFFAOYSA-N (2,4-ditert-butylphenyl) 3,5-ditert-butyl-4-hydroxybenzoate Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OC(=O)C1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 KJYSXRBJOSZLEL-UHFFFAOYSA-N 0.000 description 1
- ZXDDPOHVAMWLBH-UHFFFAOYSA-N 2,4-Dihydroxybenzophenone Chemical compound OC1=CC(O)=CC=C1C(=O)C1=CC=CC=C1 ZXDDPOHVAMWLBH-UHFFFAOYSA-N 0.000 description 1
- OJCIQAXLZMIWQT-UHFFFAOYSA-N 2,5-ditert-butyl-4-[(dimethylamino)methyl]phenol Chemical compound CN(C)CC1=CC(C(C)(C)C)=C(O)C=C1C(C)(C)C OJCIQAXLZMIWQT-UHFFFAOYSA-N 0.000 description 1
- HNURKXXMYARGAY-UHFFFAOYSA-N 2,6-Di-tert-butyl-4-hydroxymethylphenol Chemical compound CC(C)(C)C1=CC(CO)=CC(C(C)(C)C)=C1O HNURKXXMYARGAY-UHFFFAOYSA-N 0.000 description 1
- KSJNLHWGUSIAIF-UHFFFAOYSA-N 2-[2-[2-[3-(4-hydroxy-3,5-dimethylphenyl)propanoyloxy]ethoxy]ethoxy]ethyl 3-(4-hydroxy-3,5-dimethylphenyl)propanoate Chemical compound CC1=C(O)C(C)=CC(CCC(=O)OCCOCCOCCOC(=O)CCC=2C=C(C)C(O)=C(C)C=2)=C1 KSJNLHWGUSIAIF-UHFFFAOYSA-N 0.000 description 1
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 1
- XBXODRAZJJCJAR-UHFFFAOYSA-N C(CCCCCCCCCCCCCCCCC)C(C1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C)OP(O)(O)=O Chemical compound C(CCCCCCCCCCCCCCCCC)C(C1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C)OP(O)(O)=O XBXODRAZJJCJAR-UHFFFAOYSA-N 0.000 description 1
- ZJOOJJMRFNNDSM-UHFFFAOYSA-N CCCCCCCCCCCCCCCCOC(C(C=C1CC(C)C)=CC(CC(C)C)=C1O)=O Chemical compound CCCCCCCCCCCCCCCCOC(C(C=C1CC(C)C)=CC(CC(C)C)=C1O)=O ZJOOJJMRFNNDSM-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- OKOBUGCCXMIKDM-UHFFFAOYSA-N Irganox 1098 Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NCCCCCCNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 OKOBUGCCXMIKDM-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BQPNUOYXSVUVMY-UHFFFAOYSA-N [4-[2-(4-diphenoxyphosphoryloxyphenyl)propan-2-yl]phenyl] diphenyl phosphate Chemical compound C=1C=C(OP(=O)(OC=2C=CC=CC=2)OC=2C=CC=CC=2)C=CC=1C(C)(C)C(C=C1)=CC=C1OP(=O)(OC=1C=CC=CC=1)OC1=CC=CC=C1 BQPNUOYXSVUVMY-UHFFFAOYSA-N 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
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 150000004074 biphenyls Chemical class 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- MCPKSFINULVDNX-UHFFFAOYSA-N drometrizole Chemical compound CC1=CC=C(O)C(N2N=C3C=CC=CC3=N2)=C1 MCPKSFINULVDNX-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012796 inorganic flame retardant Substances 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 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
- 239000012860 organic pigment Substances 0.000 description 1
- 150000002979 perylenes Chemical class 0.000 description 1
- LIGACIXOYTUXAW-UHFFFAOYSA-N phenacyl bromide Chemical compound BrCC(=O)C1=CC=CC=C1 LIGACIXOYTUXAW-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- BCIIMDOZSUCSEN-UHFFFAOYSA-N piperidin-4-amine Chemical compound NC1CCNCC1 BCIIMDOZSUCSEN-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 150000003220 pyrenes Chemical class 0.000 description 1
- 150000003233 pyrroles Chemical class 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 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
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-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
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
Abstract
The invention discloses a transparent PC/PBT alloy which comprises the following components in parts by weight: 40 parts of PC resin; 25-35 parts of PBT resin; the transparency of the transparent PC/PBT alloy is more than 60% and the haze is less than 40% under the thickness of 2 mm. According to the invention, the weight average molecular weight ranges of the PC resin and the PBT resin in the transparent PC/PBT alloy after melt blending are inspected through various means, so that the high transparency of the PC/PBT alloy with high PBT content is realized, and the technical problem that the transparency of the PC resin is greatly reduced after the PBT content is increased is solved.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a transparent PC/PBT alloy, and a preparation method and application thereof.
Background
Polycarbonate (PC) is an amorphous polymer material, has good transparency, light transmittance of 88-90% and haze of less than 0.3, and is slightly lower than polymethyl methacrylate (PMMA) in transparency, but PC has remarkable advantages in toughness, flame retardant property and the like, so that the PC is most hopefully applied to preparation of products with high transparency requirements, such as household appliance panels, visual electric control boxes, personal care products, water tanks, ink boxes and the like. However, the non-crystallinity of PC also brings some disadvantages: the molecular chains in the amorphous region are loosely arranged and are easily invaded by small molecules, so that the PC product is easily cracked when contacting chemicals.
In order to improve the solvent resistance of PC resin, PBT with high crystallinity is added into PC in the prior art, and the solvent resistance is obviously improved. However, when PBT exceeds a certain critical content, the transparency rapidly decreases to opacity at high crystallinity.
Siloxane copolymerized polycarbonate is added into the PC/PBT alloy, so that the solvent resistance is improved to a certain extent, and the toughness can also be improved. However, since siloxane copolycarbonates are opaque, their addition results in further reduction in alloy clarity. In addition, the compositions of PC/siloxane copolycarbonate according to the prior art also achieve only a translucent effect.
Chinese patent CN11076175A discloses a toughened PC/SI-PC/PBT alloy, which comprises 5-40 parts of polycarbonate, 5-40 parts of SI-PC, 5-40 parts of PBT resin, 3-7 parts of toughening agent, 15-40 parts of chopped glass fiber and 8-15 parts of flame retardant; wherein the melt index of the polycarbonate is 8-20 g/10min (12 g/10min is adopted in the embodiment), and the melt index of the polybutylene terephthalate is 5-130 g/10min (preferably PBT resin with the melt index of 20g/10min and 120g/10min is matched for use). As can be seen, the toughened PC/SI-PC/PBT alloy has no transparent effect.
Chinese patent application CN112029252A discloses a weather-resistant halogen-free flame-retardant light diffusion PC/PBT material for a charging pile panel, which mainly comprises 77-85 parts of PC, 8-12 parts of PBT, 7-11 parts of bisphenol A bis (diphenyl phosphate), 0.3-0.7 part of methyl phenyl siloxane, 0.3-1 part of transparent toughening agent and the like. The material has light transmittance of more than 90% of the thickness of 1mm, but due to the crystallinity of the PBT, the content of the PBT cannot be further improved by the technical scheme.
Disclosure of Invention
The invention aims to provide a PC/PBT alloy which has the advantages of good solvent resistance and high transparency.
The invention also aims to provide a preparation method and application of the PC/PBT alloy.
The invention is realized by the following technical scheme:
the transparent PC/PBT alloy comprises the following components in parts by weight:
40 parts of PC resin;
25-35 parts of PBT resin;
in the transparent PC/PBT alloy resin matrix, the weight-average molecular weight of the PC resin is 24000-33000, and the weight-average molecular weight of the PBT resin is 0.9-1.6 times of the weight-average molecular weight of the PC resin; the transparency of the transparent PC/PBT alloy is more than 60% and the haze is less than 40% under the thickness of 2 mm.
Transparency and haze the prepared transparent PC/PBT alloy particles are subjected to injection molding by using an injection molding machine to form a sample wafer with the thickness of 2mm, and the light transmittance and the haze of the sample wafer are measured by using a light transmittance instrument, wherein the higher the light transmittance, the better the light transmittance, and the lower the haze, the better the haze. Preferably, in the transparent PC/PBT alloy resin matrix, the weight average molecular weight of the PBT resin is 1-1.55 times of the weight average molecular weight of the PC resin.
More preferably, in the transparent PC/PBT alloy resin matrix, the weight average molecular weight of the PBT resin is 1.3 to 1.5 times of the weight average molecular weight of the PC resin.
The method for testing the weight average molecular weight of the PC resin and the PBT resin in the transparent PC/PBT alloy resin matrix can be as follows: and dissolving the PC/PBT alloy by using tetrahydrofuran for 24 hours at room temperature, and filtering and separating the solution. The supernatant solution (solution 1) had a PC resin dissolved therein. Insoluble material in tetrahydrofuran, heating to 50 ℃ to dissolve for 2 hours, filtering the supernatant, repeat the operation 3 times to ensure that the PC resin is completely removed. The obtained insoluble matter was dissolved in a mixed solvent of o-chlorophenol and chloroform (the volume ratio of the two was o-chlorophenol: chloroform =1: 3) at room temperature for 24 hours to obtain a solution 2. Solutions 1 and 2 were introduced into Gel Permeation Chromatography (GPC) for molecular weight testing.
The PC resin of the present invention is bisphenol A polycarbonate.
In order to further improve the solvent resistance and the toughness, the silicone copolymerized polycarbonate also comprises 5-35 parts by weight, wherein the polymerization degree of the silicone copolymerized polycarbonate ranges from 40-80, and the content of silicon element ranges from 5.6-7.9 wt%.
In the siloxane copolycarbonate, the polycarbonate segment is a bisphenol A polycarbonate.
Preferably, the polymerization degree of the siloxane copolycarbonate is in the range of 50 to 60, and the silicon content is in the range of 6.4 to 7.2 wt%.
The method for testing the weight average molecular weight of the PC resin and the PBT resin in the transparent PC/PBT alloy resin matrix can be as follows: and dissolving the PC/PBT alloy by using tetrahydrofuran for 24 hours at room temperature, and filtering and separating the solution. The supernatant solution (solution 1) had a PC resin dissolved therein. Insoluble material in tetrahydrofuran, heating to 50 ℃ to dissolve for 2 hours, filtering the supernatant, repeat the operation 3 times to ensure that the PC resin is completely removed. The obtained insoluble matter was dissolved in a mixed solvent of o-chlorophenol and chloroform (the volume ratio of the two was o-chlorophenol: chloroform =1: 3) at room temperature for 24 hours to obtain a solution 2. Solution 1 and solution 2 were introduced into Gel Permeation Chromatography (GPC) for molecular weight testing.
Digesting the sample by using hydrofluoric acid in a plastic container, diluting the obtained solution according to the condition, testing the content of the Si element in the diluent by using an inductively coupled plasma mass spectrometer (ICP), and converting according to the dilution ratio to obtain the content of the Si element in the sample.
In order to maintain high transparency of the PC/PBT alloy, it is specified that the contents of the following substances respectively cannot exceed 2 parts and the total content cannot exceed 4 parts, otherwise the transparency is seriously adversely affected. The transparent PC/PBT alloy comprises, by weight, less than 1 part of inorganic filler, less than 1 part of reinforcing fiber, less than 1 part of toughening agent, less than 2 parts of flame retardant, less than 2 parts of antistatic agent, less than 1 part of wear-resistant agent and less than 0.5 part of inorganic coloring matter.
Inorganic fillers such as talc, mica, etc.;
reinforcing fibers such as glass fibers, carbon fibers, and the like;
toughening agents such as POE, EPDM, and the like;
flame retardants such as brominated flame retardants, halogen-free flame retardants, inorganic flame retardants, and the like;
antistatic agents such as polyetheramides, ethoxylated aliphatic alkylamines, ethoxylated alkyl acid amines, sodium alkylsulfonates, and the like;
wear-resistant agents such as polytetrafluoroethylene, molybdenum disulfide, silica microspheres, and the like;
inorganic coloring matters such as carbon black, inorganic metallic pigments and the like.
Whether 0-2 parts of auxiliary agent is added can be determined according to actual needs; the auxiliary agent is at least one selected from an antioxidant, a lubricant and a light stabilizer. In order to realize the transparent color composite material, a proper amount of organic pigments such as phthalocyanines, quinophthalones, pyrroles, quinacridones, anthraquinones, thioindigoids, azos, biphenyls, pyrenes, perylenes and the like can also be added.
The antioxidant may be: 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene; 2, 5-di-tert-butyl-4-hydroxybenzyldimethylamine; diethyl-3, 5-di-tert-butyl-4-hydroxybenzyl phosphate; stearyl-3, 5-di-tert-butyl-4-hydroxybenzyl phosphate; 3, 5-di-tert-butyl-4-hydroxyphenyl-3, 5-distearyl-thiotriazolylamine; 2, 6-di-tert-butyl-4-hydroxymethylphenol; 2, 4-bis- (n-octylthio) -6- (4-hydroxy-3, 5-di-tert-butyl glyceryl allyl ether) -1,3, 5-triazine; n, N' -hexamethylenebis (3, 5-di-tert-butyl-4-hydroxy-hydrocinnamamide); n, N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine; octadecyl-3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate; pentaerythrityl-tetrakis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ]; triethylene glycol-bis [3- (3, 5-dimethyl-4-hydroxyphenyl) propionate ]; triethylene glycol bis [ β - (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate ]; 2, 2' -thiodiethyl-bis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, and the like.
The lubricant may be: at least one of a stearate lubricant, a fatty acid lubricant, and a stearate lubricant; the stearate lubricant is selected from at least one of calcium stearate, magnesium stearate and zinc stearate; the fatty acid lubricant is at least one selected from fatty acid, fatty acid derivative and fatty acid ester; the stearate lubricant is at least one selected from pentaerythritol stearate.
The light stabilizer may be: hydroxybenzoic acid ester ultraviolet absorbers, benzophenone ultraviolet absorbers, benzotriazole ultraviolet absorbers, HALS ultraviolet absorbers;
the ultraviolet absorbent can be selected from cetyl 3, 5-diisobutyl-4-hydroxybenzoate, 2, 4-di-tert-butylphenyl 3, 5-di-tert-butyl-4-hydroxybenzoate, and n-cetyl 3, 5-di-tert-butyl-4-hydroxybenzoate;
the benzophenone-type ultraviolet absorbent can be selected from 2, 4-dihydroxy benzophenone; 2-hydroxy-4-alkoxybenzophenone, 1, 3-bis (methoxy-3-hydroxy-4-benzophenone) benzene, 2-hydroxy-4-phenylalkoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, 2-hydroxy-4-methylmethacrylate benzophenone.
The benzotriazole-based ultraviolet absorber may be selected from 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2- (2 '-hydroxy-5' -methyl) -benzotriazole, 2- (3 ', 5' -di-tert-butyl-2 '-hydroxy) -benzotriazole, 2- (2' -hydroxy-3 '-isobutyl-5' -tert-butyl) -benzotriazole, 2- (2 '-hydroxy-3', 5 '-bis (1, 1-dimethylphenyl) -benzotriazole, 2- (2' -hydroxy-5 '-tert-octyl) -benzotriazole, 2- (2' -hydroxy-3 '- (1, 1-dimethylphenyl) -5' - [1 ], at least one of 1,3, 3-tetramethylbutyl ] -benzotriazole, 2' methylene- (6- (2H-benzotriazole) -4-tert-octyl) phenol;
the HALS ultraviolet absorber may be at least one selected from bis-2, 2,6, 6-tetramethylpiperidinol sebacate, N' - (2,2,6, 6-tetramethyl, 4-aminopiperidine) -isophthalamide, bis-1-octyloxy-2, 2,6, 6-tetramethylpiperidinol sebacate, and (1,2,2,6, 6-pentamethylpiperidinol) methacrylate.
The transparency of the PC/PBT alloy is more than 60% and the haze is less than 40% under the thickness of 2 mm.
The preparation method of the transparent PC/PBT alloy comprises the following steps: uniformly mixing the components according to the proportion, and then extruding and granulating through a double-screw extruder to obtain a transparent PC/PBT alloy; wherein, when the weight average molecular weight range of the PC resin raw material is 30001-34000, the temperature range of the screw is 240-270 ℃, and the rotating speed range is 450-600 rpm; when the weight average molecular weight of the PC resin raw material is 24000-30000, the temperature of the screw is 200-240 ℃, and the rotating speed is 300-450 rpm.
When the temperature range of the screw barrel is 240-270 ℃ and the rotating speed range is 450-600rpm, the screw barrel belongs to strong processing, and the weight average molecular weights of the PC resin and the PBT resin are greatly reduced in the process of melt shearing under the processing process condition.
When the temperature range of the screw cylinder is 200-240 ℃ and the rotating speed range is 300-450rpm, the process belongs to weak processing, and the reduction range of the weight-average molecular weight of the PC resin and the PBT resin in the process of melt shearing is smaller under the processing process condition.
The factors influencing the weight average molecular weight of the PC resin and the PBT resin in the resin matrix during the processing of the screw are mainly heat and shear, and certainly comprise other added component types (such as whether granular hard materials are added or not), the content of each component and the like, but the factors belong to auxiliary factors and influence the heat and shear which are obviously smaller than that of the screw.
The PC/PBT alloy disclosed by the invention is applied to preparing at least one of household appliance panels, visual electric control boxes, personal care product packages, water tanks and ink boxes.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the invention utilizes the difference of the decrease range of the weight average molecular weight of the PC resin and the weight average molecular weight of the PBT resin between the strong processing condition and the weak processing condition in the blending/shearing process to investigate the distribution of the weight average molecular weight of the PC resin and the weight average molecular weight of the PBT resin in the PC/PBT alloy resin matrix, and can increase the content of the PBT resin on the premise of keeping high transparency so as to improve the solvent resistance.
Secondly, on the premise of the weight average molecular weight distribution of two resins in the PC/PBT alloy resin matrix, the solvent resistance can be improved on the premise of keeping high transparency by adding a specific amount of siloxane copolymerized polycarbonate with a specific structure.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
The examples of the invention and the comparative examples used the following raw materials:
PC resin-A: a weight average molecular weight of about 25000, bisphenol A type, manufacturer LG company;
PC resin-B: weight average molecular weight about 26000, bisphenol a type, company LG;
PC resin-C: weight average molecular weight of about 27000, bisphenol a, manufacturer, dakuai, inc;
PC resin-D: weight average molecular weight of about 30000, bisphenol A type, Mitsubishi corporation;
PC resin-E: weight average molecular weight of about 32000, bisphenol a type, manufacturer wawa chemical company;
PC resin-F: weight average molecular weight about 33000, bisphenol A, manufacturer Lucy chemical company;
PC resin-G: weight average molecular weight about 34000, bisphenol A, manufacturer Lucy chemical company;
PC resin-H: weight average molecular weight about 23000, bisphenol a, manufacturer, dakutolite;
PC resin-I: weight average molecular weight of about 35000, bisphenol A, Mitsubishi corporation;
PBT resin-A: weight average molecular weight of about 32000, manufacturer blue mountain tun river;
PBT resin-B: weight average molecular weight about 33000, manufacturer certified chemical fiber company;
PBT resin-C: weight average molecular weight about 34000, manufacturer Changchun chemical company;
PBT resin-D: weight average molecular weight of about 38000, a manufacturer certified chemical fiber company;
PBT resin-E: weight average molecular weight about 39000, manufacturer Changchun chemical company;
PBT resin-F: weight average molecular weight of about 40000, manufacturer certified chemical fiber company;
PBT resin-G: weight average molecular weight of about 30000, manufacturer certified chemical fiber company;
PBT resin-H: a weight average molecular weight of about 41000, manufacturer blue mountain tun river;
siloxane copolymerized polycarbonate a: degree of polymerization in the range of 40, elemental silicon content in the range of 5.6wt%, Sumitomo corporation;
siloxane copolycarbonate B: the polymerization degree is 50, the silicon element content is 6.4wt%, and the manufacturer Cangzhou Daihuai company;
siloxane copolycarbonate C: the polymerization degree is 60, the silicon element content is 7.2wt%, and the manufacturer Cangzhou Daihuai company;
siloxane copolycarbonate D: the polymerization degree is 80, the silicon element content is 7.9wt%, and the manufacturer Cangzhou Daihuai company;
siloxane copolycarbonate E: degree of polymerization ranged from 35, elemental silicon content ranged from 5wt%, manufacturer Vanhua Chemicals;
siloxane copolycarbonate F: degree of polymerization ranged from 85, elemental silicon ranged from 8.5wt%, manufacturer Wanhua chemical company;
lubricant: pentaerythritol stearate, commercially available.
Examples and comparative examples preparation of PC/PBT alloys: uniformly mixing the components, and extruding and granulating by a double-screw extruder to obtain a transparent PC/PBT alloy; the processing strength was as follows:
weak 1: the temperature of each section of the screw is set to be 200-220 ℃, and the rotating speed is 300 r/min;
weak 2: the temperature of each section of the screw is set to be 210 ℃ and 230 ℃, and the rotating speed is 350 r/min;
weak 3: the temperature of each section of the screw is set to be 220 ℃ and 240 ℃, and the rotating speed is 450 rpm;
1 part of strong: the temperature of each section of the screw is set to 240 ℃ and 250 ℃, and the rotating speed is 450 revolutions per minute;
and (2) strength: the temperature of each section of the screw is set to be 250-265 ℃, and the rotating speed is 500 r/min;
3, strong: the temperature of each section of the screw is set to be 260-270 ℃, and the rotating speed is 600 revolutions per minute;
the test methods were as follows:
(1) transparency: the prepared transparent PC/PBT alloy particles are subjected to injection molding by using an injection molding machine to form sample pieces with the thickness of 2mm, and the light transmittance and the haze of the sample pieces are measured by using a light transmittance instrument, wherein the higher the light transmittance is, the better the light transmittance is, and the lower the haze is, the better the haze is.
(2) Solvent resistance: clamping a sample strip by using a cambered surface die with 1.5% strain, coating a polar solvent tributyl phosphate, and obtaining a sample strip with 4-grade no crack after 4 hours; 3, if the sample strip has cracks within 3-4h, the grade is 3; 2, if the sample strip has cracks within 2-3h, determining the sample strip is 2-grade; and the crack appears within 2h, and the grade is 1.
Table 1: examples 1-12PC/PBT alloys content of each component (parts by weight) and test results
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | |
| PC resin content | 40 | 40 | 40 | 40 | 40 | 40 |
| Kind of PC resin | A | A | B | C | B | B |
| PBT resin content | 30 | 30 | 30 | 30 | 30 | 30 |
| Kind of PBT resin | A | C | B | C | D | H |
| Strength in working | Weak 2 | Weak 2 | Weak 3 | Weak 1 | Weak 3 | Weak 3 |
| Weight average molecular weight of PC resin | 24287 | 24130 | 24968 | 26348 | 25018 | 24934 |
| Remark amplitude reduction | 713 | 870 | 1032 | 652 | 982 | 1066 |
| PBT resin weight average molecular weight | 29936 | 31883 | 30149 | 32375 | 34861 | 37418 |
| Remark amplitude reduction | 2064 | 2117 | 2851 | 1625 | 3139 | 3582 |
| Weight average molecular weight ratio PBT to PC | 1.23 | 1.32 | 1.21 | 1.23 | 1.39 | 1.50 |
| Degree of transparency% | 67.3 | 70.4 | 66.1 | 67.9 | 71.8 | 74.2 |
| Haze% | 28.4 | 26.1 | 30.0 | 29.1 | 25.4 | 24.5 |
| Solvent resistance | Grade 3 | Grade 3 | Grade 3 | Grade 3 | Grade 3 | Grade 3 |
As can be seen from all of the examples and comparative examples, the weight average molecular weight of the PBT resin decreased more than that of the PC resin during the shear blending processing of the screw.
Continuing with Table 1:
| example 7 | Example 8 | Example 9 | Example 10 | Example 11 | Example 12 | |
| PC resin content | 40 | 40 | 40 | 40 | 40 | 40 |
| Kind of PC resin | C | D | A | E | F | G |
| PBT resin content | 30 | 30 | 30 | 30 | 30 | 30 |
| Kind of PBT resin | A | A | F | A | E | H |
| Strength of working | Weak 3 | Weak 3 | Weak 2 | Strength 1 | Strength 2 | Strength 3 |
| Weight average molecular weight of PC resin | 25843 | 28865 | 24329 | 30540 | 31265 | 31830 |
| Remark amplitude reduction | 1157 | 1135 | 671 | 1460 | 1735 | 2170 |
| PBT resin weight average molecular weight | 29158 | 29176 | 37729 | 28181 | 34995 | 36647 |
| Remark amplitude reduction | 2842 | 2824 | 2271 | 3819 | 4005 | 4353 |
| Weight average molecular weight ratio PBT to PC | 1.13 | 1.01 | 1.55 | 0.92 | 1.12 | 1.15 |
| Degree of transparency% | 65.4 | 62.7 | 68.4 | 60.3 | 65.9 | 66.2 |
| Haze% | 37.2 | 39.5 | 28.3 | 40.0 | 37.3 | 36.7 |
| Solvent resistance | Grade 3 | Grade 3 | Grade 3 | Grade 3 | Grade 3 | Grade 3 |
As can be seen from examples 1-12, a level 3 solvent resistance can be achieved with PC and PBT formulations of the present invention. Specifically, the transparency is further improved under the retained weight average molecular weight of the preferred PC resin and PBT resin.
Table 2: examples 13-18PC/PBT alloys with respective component contents (in parts by weight) and test results
| Example 13 | Example 14 | Example 15 | Example 16 | Example 17 | Example 18 | |
| PC resin content | 40 | 40 | 40 | 40 | 40 | 40 |
| Kind of PC resin | C | C | C | C | C | C |
| PBT resin content | 25 | 35 | 30 | 30 | 30 | 30 |
| Kind of PBT resin | A | A | A | A | A | A |
| Siloxane copolycarbonate content | 25 | 35 | 30 | 30 | 30 | 30 |
| Class of siloxane copolycarbonates | A | A | A | B | C | D |
| Lubricant agent | 0.2 | |||||
| Strength in working | Weak 3 | Weak 1 | Weak 3 | Weak 3 | Weak 3 | Weak 3 |
| Weight average molecular weight of PC resin | 25843 | 26406 | 25935 | 26020 | 25976 | 26035 |
| Remark amplitude reduction | 1157 | 594 | 1065 | 980 | 1024 | 965 |
| PBT resin weight average molecular weight | 29158 | 30423 | 29306 | 29363 | 29289 | 29258 |
| Remark amplitude reduction | 2842 | 1577 | 2694 | 2637 | 2711 | 2742 |
| Weight average molecular weight ratio PBT to PC | 1.13 | 1.15 | 1.13 | 1.13 | 1.13 | 1.13 |
| Degree of transparency% | 75.4 | 62.8 | 68.4 | 70.8 | 69.5 | 66.3 |
| Haze% | 24.2 | 38.5 | 33.2 | 32.7 | 33.5 | 36.7 |
| Solvent resistance | Grade 4 | 4 stage | 4 stage | Grade 4 | 4 stage | 4 stage |
From examples 13 to 18, it is clear that the solvent resistance can be further improved by adding siloxane copolycarbonate. Specifically, as is clear from examples 7 and 15, the transparency can be further improved by adding a siloxane copolycarbonate.
As can be seen from examples 15-18, it is preferred that the degree of polymerization of the siloxane copolycarbonate be in the range of 50 to 60 and the elemental silicon content be in the range of 6.4 to 7.2wt% for higher clarity.
Table 3: comparative example PC/PBT alloy the contents of the respective Components (in parts by weight) and the test results
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 | Comparative example 7 | |
| PC resin content | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| Kind of PC resin | H | I | H | G | H | A | A |
| PBT resin content | 30 | 30 | 30 | 30 | 30 | 20 | 40 |
| Kind of PBT resin | A | G | H | G | H | C | C |
| Siloxane copolycarbonate content | 30 | 30 | |||||
| Class of siloxane copolycarbonates | A | A | |||||
| Strength of working | Weak 1 | Strength 2 | Weak 1 | Strength 2 | Weak 1 | Weak 1 | Weak 1 |
| Weight average molecular weight of PC resin | 22485 | 33108 | 22383 | 32200 | 22153 | 24381 | 24401 |
| Remark amplitude reduction | 515 | 1892 | 617 | 1800 | 847 | 619 | 599 |
| PBT resin weight average molecular weight | 30510 | 26175 | 39270 | 26732 | 39054 | 31967 | 31858 |
| Remark amplitude reduction | 1490 | 3825 | 1730 | 3268 | 1946 | 2033 | 2142 |
| Weight average molecular weight ratio PBT to PC | 1.36 | 0.79 | 1.75 | 0.83 | 1.76 | 1.31 | 1.31 |
| Degree of transparency% | 57.1 | 71.6 | 28.9 | 62.3 | 24.8 | 78.6 | 52.3 |
| Haze% | 44.2 | 27.1 | 67.4 | 37.8 | 70.1 | 22.7 | 47.9 |
| Solvent resistance | Stage 2 | Level 1 | 4 stage | Stage 2 | 4 stage | Stage 2 | 4 stage |
As can be seen from comparative example 1, the retained weight average molecular weight of the PC resin was too low, the transparency was not high, and particularly the solvent resistance was insufficient.
As seen from comparative example 2, when the retained weight average molecular weights of the PC and PBT resins were less than 0.9, the solvent resistance was poor.
As can be seen from comparative example 3, when the PC and PBT resins have a retained weight average molecular weight of more than 1.6, the transparency is poor.
It is seen from comparative example 2/4 that when the retained weight average molecular weight of the PC and PBT resins is less than 0.9 and a silicone copolymerized polycarbonate is further added, transparency is further lowered.
It is understood from comparative example 3/5 that when the retained weight average molecular weight of the PC and PBT resins is higher than 1.6 and the silicone copolymerized polycarbonate is added, the transparency is further lowered.
From comparative example 6/7, when the content of PBT resin is too low, the solvent resistance is poor; when the content of the PBT resin is too high, the transparency is poor.
Claims (8)
1. The transparent PC/PBT alloy is characterized by comprising the following components in parts by weight:
40 parts of PC resin;
25-35 parts of PBT resin;
in the transparent PC/PBT alloy resin matrix, the weight-average molecular weight of the PC resin is 24000-33000, and the weight-average molecular weight of the PBT resin is 0.9-1.6 times of the weight-average molecular weight of the PC resin;
the transparency of the transparent PC/PBT alloy is more than 60% and the haze is less than 40% under the thickness of 2 mm.
2. The transparent PC/PBT alloy according to claim 1, wherein the weight-average molecular weight of the PBT resin in the transparent PC/PBT alloy resin matrix is 1 to 1.55 times the weight-average molecular weight of the PC resin.
3. The transparent PC/PBT alloy according to claim 2, wherein the transparent PC/PBT alloy resin matrix has a weight-average molecular weight of the PBT resin that is 1.3 to 1.5 times the weight-average molecular weight of the PC resin.
4. The transparent PC/PBT alloy according to claim 1, further comprising 5 to 35 parts by weight of a silicone copolymerized polycarbonate, wherein the degree of polymerization of the silicone copolymerized polycarbonate is in the range of 40 to 80, and the content of silicon element is in the range of 5.6 to 7.9 wt%.
5. The transparent PC/PBT alloy according to claim 4, wherein the polymerization degree of the siloxane copolycarbonate is in the range of 50 to 60 and the silicon content is in the range of 6.4 to 7.2 wt.%.
6. The transparent PC/PBT alloy according to claim 1, further comprising 0 to 2 parts by weight of an auxiliary agent; the auxiliary agent is at least one selected from an antioxidant, a lubricant and an ultraviolet absorbent.
7. A process for the preparation of the transparent PC/PBT alloy according to any one of claims 1 to 6, characterized in that it comprises the following steps: uniformly mixing the components according to the proportion, and then extruding and granulating through a double-screw extruder to obtain a transparent PC/PBT alloy; wherein, when the weight average molecular weight range of the PC resin raw material is 30001-34000, the temperature range of the screw is 240-270 ℃, and the rotating speed range is 450-600 rpm; when the weight average molecular weight of the PC resin raw material is 24000-30000, the temperature range of the screw is 200-240 ℃, and the rotating speed range is 300-450 rpm.
8. Use of the transparent PC/PBT alloy of any one of claims 1-6 for the manufacture of at least one of a panel for home appliances, a visual electrical control box, a personal care product package, a water tank, an ink cartridge, a magnetic card transportation box, a new energy charging post assembly.
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