CN114031922A - Low-temperature impact resistant PCPBT alloy material for vehicles and preparation method thereof - Google Patents
Low-temperature impact resistant PCPBT alloy material for vehicles and preparation method thereof Download PDFInfo
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- CN114031922A CN114031922A CN202111535010.1A CN202111535010A CN114031922A CN 114031922 A CN114031922 A CN 114031922A CN 202111535010 A CN202111535010 A CN 202111535010A CN 114031922 A CN114031922 A CN 114031922A
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- pcpbt
- alloy material
- polycarbonate
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- 239000000956 alloy Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229920001707 polybutylene terephthalate Polymers 0.000 claims abstract description 37
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 34
- 239000004417 polycarbonate Substances 0.000 claims abstract description 34
- -1 polybutylene terephthalate Polymers 0.000 claims abstract description 29
- 239000007822 coupling agent Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 239000003112 inhibitor Substances 0.000 claims abstract description 12
- 239000012745 toughening agent Substances 0.000 claims abstract description 12
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 11
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 11
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 10
- 150000002148 esters Chemical group 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 8
- 239000012752 auxiliary agent Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 4
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 2
- 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 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 235000019820 disodium diphosphate Nutrition 0.000 claims description 2
- GYQBBRRVRKFJRG-UHFFFAOYSA-L disodium pyrophosphate Chemical compound [Na+].[Na+].OP([O-])(=O)OP(O)([O-])=O GYQBBRRVRKFJRG-UHFFFAOYSA-L 0.000 claims description 2
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 2
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 2
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 2
- 229920001897 terpolymer Polymers 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 229920006778 PC/PBT Polymers 0.000 abstract description 12
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 229920003023 plastic Polymers 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 abstract description 4
- 125000004185 ester group Chemical group 0.000 abstract 1
- 238000011161 development Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000005809 transesterification reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012360 testing method Methods 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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
Abstract
The invention belongs to the field of PC/PBT alloy plastics, and particularly discloses a low-temperature impact resistant PCPBT alloy material for a vehicle and a preparation method thereof, wherein the low-temperature impact resistant PCPBT alloy material for the vehicle is prepared from the following raw materials in parts by weight: 100 parts of Polycarbonate (PC), 50-80 parts of polybutylene terephthalate (PBT), 20-40 parts of toughening agent, 10-30 parts of compatilizer, 10-20 parts of ester exchange inhibitor, 8-16 parts of antioxidant and 5-10 parts of coupling agent; the average molecular weight of the polycarbonate is between 35000 and 45000; the polymerization degree of the polybutylene terephthalate is 250-350, and the average molecular weight is 45000-55000; the PC/PBT alloy plastic disclosed by the invention is low in cost and excellent in toughness, can bring wider application fields and larger profit margins for the automobile industry and other industries, and meets increasingly strict toughness requirements of customers on materials used at low temperature.
Description
Technical Field
The invention belongs to the field of PC/PBT alloy plastics, and particularly discloses a low-temperature impact resistant PCPBT alloy material for a vehicle and a preparation method thereof.
Background
Polybutylene terephthalate (PBT) engineering plastic has the advantages of high crystallization speed, easiness in realizing high-speed molding, good weather resistance, good electrical property and the like, is widely applied to the industries of automobiles, electronic and electric products and mechanical manufacturing, and is the fifth engineering plastic at present. However, the PBT resin has the defects of low notch impact strength, large molding shrinkage, poor rigidity at high temperature and the like, and the problems limit the development and application of the PBT resin in certain fields to a certain extent. Polycarbonate (PC) has good mechanical property, heat resistance and electrical property, particularly outstanding impact resistance, but because PC has higher molecular rigidity and steric hindrance, the PC has higher melting temperature, is difficult to process, is difficult to manufacture large-scale thin-wall products, has larger residual stress and is easy to stress crack. Therefore, for PBT, the PC and the PBT are blended, so that the heat deformation temperature and the shrinkage rate and warpage of the PBT can be effectively improved, but the impact resistance of the PBT is not greatly improved; and the impact properties are greatly reduced for Polycarbonate (PC).
With the rapid development of the global automobile industry and the increasing requirements for light weight of automobiles, the demand of modified plastics for automobiles is increasing year by year in recent years, wherein the PC/PBT alloy material has become the development focus of the blending modification market because of the excellent balance of all properties, such as high heat resistance, good dimensional stability and the like. At present, the PC/PBT alloy material can be widely used for various automobile parts, such as automobile bumpers, automobile handles, automobile body side plates, electric and electronic equipment parts and the like, and the PC/PBT alloy material is the development focus of the blending modification market.
As is known, PC/PBT alloy materials have good normal temperature impact toughness, but with the increasing complexity of automobile material structures, more rigorous requirements on material toughness are provided, and the impact toughness of the traditional PC/PBT alloy materials cannot meet the requirements of low temperature use, so that the application of the PC/PBT materials in the field is bound to be greatly limited.
Disclosure of Invention
Aiming at the situation, the invention discloses a low-temperature impact resistant PCPBT alloy material for a vehicle and a preparation method thereof.
The technical scheme of the invention is as follows:
the low-temperature impact resistant PCPBT alloy material for the vehicle is prepared from the following raw materials in parts by weight:
the average molecular weight of the polycarbonate is between 35000 and 45000;
the polymerization degree of the polybutylene terephthalate is 250-350, and the average molecular weight is 45000-55000.
Preferably, the toughening agent is selected from one of methyl methacrylate-butadiene-styrene terpolymer, acrylonitrile-butadiene-styrene copolymer and ethylene-vinyl acetate copolymer.
Preferably, the compatilizer is selected from one of chlorinated polyethylene, ethylene-vinyl acetate copolymer and vinyl acetate.
Preferably, the transesterification inhibitor is selected from one of sodium dihydrogen phosphate, triphenyl phosphite and disodium dihydrogen pyrophosphate.
Preferably, the antioxidant is selected from one of zinc dialkyl dithiophosphate, N-phenyl-alpha-naphthylamine and mercaptobenzothiazole.
Preferably, the coupling agent is selected from one of a chromium complex coupling agent, a silane coupling agent and a titanate coupling agent.
Preferably, the PCPBT alloy material for the vehicle is composed of the following raw materials in parts by weight:
the polycarbonate has an average molecular weight of 40000;
the polymerization degree of the polybutylene terephthalate is 300, and the average molecular weight is 50000.
Preferably, the PCPBT alloy material for the vehicle is composed of the following raw materials in parts by weight:
the polycarbonate has an average molecular weight of 40000;
the polymerization degree of the polybutylene terephthalate is 300, and the average molecular weight is 50000.
Further, the preparation method of the PCPBT alloy material for the vehicle with low temperature impact resistance comprises the following steps:
s1, drying the polycarbonate and polybutylene terephthalate materials at the temperature of 80-90 ℃ for 2-4h,
s2, weighing polycarbonate, polybutylene terephthalate, a toughening agent, a compatilizer, an ester exchange inhibitor, an antioxidant and a coupling agent according to the formula;
s3, uniformly mixing the raw materials and the auxiliary agent in a stirring barrel;
s4, adding the mixture material into a double-screw extruder, and controlling the temperature of a charging barrel of the double-screw extruder at 230-270 ℃;
s5, extruding, drawing strips, cooling with water, and cutting into granules to obtain the PCPBT alloy material with low temperature impact resistance.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a low-temperature impact resistant PCPBT alloy material for vehicles, which is prepared by reasonably and effectively screening a base material and an auxiliary agent, blending a high-molecular-weight PC (polycarbonate) and PBT (polybutylene terephthalate) raw material with a toughening agent in a reasonable proportion, adding auxiliary agents such as a compatilizer, an ester exchange inhibitor, an antioxidant, a coupling agent and the like, and simultaneously selecting a screw structure in a middle shearing arrangement and a reasonable extrusion process. The molecular structure of PC and PBT has a certain compatibility, but in the processing process, an indefinite transesterification reaction is easily generated, so that the structure of a polymer is changed, and the molecular instability finally causes degradation. The compatibility of the PC and the PBT can be effectively improved by adding the compatilizer on the premise of not influencing the low-temperature impact resistance of the blend. Can be used in various parts in the automobile industry, and has wide market space.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The reagents or instruments used in the examples of the present invention are not indicated by manufacturers, and are all conventional reagent products available from commercial sources.
Example 1
The low-temperature impact resistant PCPBT alloy material for the vehicle is prepared from the following raw materials in parts by weight:
the polycarbonate has an average molecular weight of 35000;
the polymerization degree of the polybutylene terephthalate is 250, and the average molecular weight is 45000;
the preparation method comprises the following steps:
s1, drying the polycarbonate and polybutylene terephthalate materials at the temperature of 80 ℃ for 2h,
s2, weighing polycarbonate, polybutylene terephthalate, a toughening agent, a compatilizer, an ester exchange inhibitor, an antioxidant and a coupling agent according to the formula;
s3, uniformly mixing the raw materials and the auxiliary agent in a stirring barrel;
s4, adding the mixture material into a double-screw extruder, and controlling the temperature of a charging barrel of the double-screw extruder at 230 ℃;
s5, extruding, drawing strips, cooling with water, and cutting into granules to obtain the PCPBT alloy material with low temperature impact resistance.
Example 2
The low-temperature impact resistant PCPBT alloy material for the vehicle is prepared from the following raw materials in parts by weight:
the polycarbonate has an average molecular weight of 40000;
the polymerization degree of the polybutylene terephthalate is 300, and the average molecular weight is 50000.
The preparation method comprises the following steps:
s1 drying the polycarbonate and polybutylene terephthalate material at 85 ℃ for 3h,
s2, weighing polycarbonate, polybutylene terephthalate, a toughening agent, a compatilizer, an ester exchange inhibitor, an antioxidant and a coupling agent according to the formula;
s3, uniformly mixing the raw materials and the auxiliary agent in a stirring barrel;
s4, adding the mixture material into a double-screw extruder, and controlling the temperature of a charging barrel of the double-screw extruder at 250 ℃;
s5, extruding, drawing strips, cooling with water, and cutting into granules to obtain the PCPBT alloy material with low temperature impact resistance.
Example 3
The low-temperature impact resistant PCPBT alloy material for the vehicle is prepared from the following raw materials in parts by weight:
the polycarbonate has an average molecular weight of 45000;
the polymerization degree of the polybutylene terephthalate is 350, and the average molecular weight is 55000;
the preparation method comprises the following steps:
s1, drying the polycarbonate and polybutylene terephthalate materials at 90 ℃ for 4h,
s2, weighing polycarbonate, polybutylene terephthalate, a toughening agent, a compatilizer, an ester exchange inhibitor, an antioxidant and a coupling agent according to the formula;
s3, uniformly mixing the raw materials and the auxiliary agent in a stirring barrel;
s4, adding the mixture material into a double-screw extruder, and controlling the temperature of a charging barrel of the double-screw extruder at 270 ℃;
s5, extruding, drawing strips, cooling with water, and cutting into granules to obtain the PCPBT alloy material with low temperature impact resistance.
Test example
The low-temperature impact resistant PCPBT alloy materials for vehicles prepared in the examples 1-3 and the commercial PCPBT alloy materials are compared and detected as comparative examples, and the results are shown in the table 1.
TABLE 1 Performance test
As can be seen from the table 1, the invention modifies the low-temperature impact resistant PC/PBT composite material by different types of ester exchange inhibitors and toughening agents, and preferably selects a combination with excellent high impact resistance and good low-temperature resistance. Meanwhile, the low-temperature impact resistant PC/PBT composite material is modified by different coupling agents and compatilizers, and a good combination of the compatilizers is preferably selected. The PC/PBT alloy is modified by different types of PC and PBT, the combination with good toughness and stable performance is preferably selected, and the material has the characteristics of high impact resistance at low temperature and good dimensional stability, can be used for various parts in the automobile industry, and has wide market space.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The PCPBT alloy material for the vehicle is characterized by being prepared from the following raw materials in parts by weight:
polycarbonate 100 parts
50-80 parts of polybutylene terephthalate
20-40 parts of toughening agent
10-30 parts of compatilizer
10-20 parts of ester exchange inhibitor
8-16 parts of antioxidant
5-10 parts of coupling agent
The average molecular weight of the polycarbonate is between 35000 and 45000;
the polymerization degree of the polybutylene terephthalate is 250-350, and the average molecular weight is 45000-55000.
2. The PCPBT alloy material for the vehicle of claim 1, wherein the toughening agent is one selected from a methyl methacrylate-butadiene-styrene terpolymer, an acrylonitrile-butadiene-styrene copolymer and an ethylene-vinyl acetate copolymer.
3. The PCPBT alloy material for the vehicle of claim 1, wherein the compatibilizer is one selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, and vinyl acetate.
4. The PCPBT alloy material for the vehicle as claimed in claim 1, wherein the ester exchange inhibitor is selected from one of sodium dihydrogen phosphate, triphenyl phosphite and disodium dihydrogen pyrophosphate.
5. The PCPBT alloy material for the vehicle, which is resistant to low-temperature impact, according to claim 1, wherein the antioxidant is one selected from zinc dialkyldithiophosphate, N-phenyl-alpha-naphthylamine and mercaptobenzothiazole.
6. The PCPBT alloy material for the vehicle, according to claim 1, wherein the coupling agent is one selected from a chromium complex coupling agent, a silane coupling agent, and a titanate coupling agent.
7. The PCPBT alloy material for the vehicle, which is resistant to low-temperature impact, is characterized by comprising the following raw materials in parts by weight:
polycarbonate 100 parts
65 parts of polybutylene terephthalate
30 portions of toughening agent
20 portions of compatilizer
Ester exchange inhibitor 15 parts
Antioxidant 12 parts
Coupling agent 8 parts
The polycarbonate has an average molecular weight of 40000;
the polymerization degree of the polybutylene terephthalate is 300, and the average molecular weight is 50000.
8. The PCPBT alloy material for the vehicle, which is resistant to low-temperature impact, is characterized by comprising the following raw materials in parts by weight:
polycarbonate 100 parts
65 parts of polybutylene terephthalate
Acrylonitrile-butadiene-styrene copolymer 30 parts
Ethylene-vinyl acetate copolymer 20 parts
15 parts of triphenyl phosphite
12 portions of N-phenyl-alpha-naphthylamine
Silane coupling agent 8 parts
The polycarbonate has an average molecular weight of 40000;
the polymerization degree of the polybutylene terephthalate is 300, and the average molecular weight is 50000.
9. The preparation method of the low temperature impact resistant PCPBT alloy material for the vehicle of any one of claims 1-8, which is characterized by comprising the following steps:
s1, drying the polycarbonate and polybutylene terephthalate materials at the temperature of 80-90 ℃ for 2-4h,
s2, weighing polycarbonate, polybutylene terephthalate, a toughening agent, a compatilizer, an ester exchange inhibitor, an antioxidant and a coupling agent according to the formula;
s3, uniformly mixing the raw materials and the auxiliary agent in a stirring barrel;
s4, adding the mixture material into a double-screw extruder, and controlling the temperature of a charging barrel of the double-screw extruder at 230-270 ℃;
s5, extruding, drawing strips, cooling with water, and cutting into granules to obtain the PCPBT alloy material with low temperature impact resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111535010.1A CN114031922A (en) | 2021-12-15 | 2021-12-15 | Low-temperature impact resistant PCPBT alloy material for vehicles and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111535010.1A CN114031922A (en) | 2021-12-15 | 2021-12-15 | Low-temperature impact resistant PCPBT alloy material for vehicles and preparation method thereof |
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| CN202111535010.1A Pending CN114031922A (en) | 2021-12-15 | 2021-12-15 | Low-temperature impact resistant PCPBT alloy material for vehicles and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104530681A (en) * | 2014-12-26 | 2015-04-22 | 上海普利特复合材料股份有限公司 | High-performance ultraviolet-resistant PC/PBT composite material and preparation method thereof |
| CN110760175A (en) * | 2019-11-20 | 2020-02-07 | 中广核高新核材科技（苏州）有限公司 | Toughened PC/SI-PC/PBT alloy material and preparation method thereof |
| CN111117186A (en) * | 2019-12-24 | 2020-05-08 | 会通新材料股份有限公司 | Flame-retardant, low-temperature-impact-resistant and high-weather-resistance PC/PBT alloy and preparation method thereof |
-
2021
- 2021-12-15 CN CN202111535010.1A patent/CN114031922A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104530681A (en) * | 2014-12-26 | 2015-04-22 | 上海普利特复合材料股份有限公司 | High-performance ultraviolet-resistant PC/PBT composite material and preparation method thereof |
| CN110760175A (en) * | 2019-11-20 | 2020-02-07 | 中广核高新核材科技（苏州）有限公司 | Toughened PC/SI-PC/PBT alloy material and preparation method thereof |
| CN111117186A (en) * | 2019-12-24 | 2020-05-08 | 会通新材料股份有限公司 | Flame-retardant, low-temperature-impact-resistant and high-weather-resistance PC/PBT alloy and preparation method thereof |
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Application publication date: 20220211 |