CN102532687A - Composite material with low shrinkage rate and preparation method thereof - Google Patents
Composite material with low shrinkage rate and preparation method thereof Download PDFInfo
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- CN102532687A CN102532687A CN2010106053038A CN201010605303A CN102532687A CN 102532687 A CN102532687 A CN 102532687A CN 2010106053038 A CN2010106053038 A CN 2010106053038A CN 201010605303 A CN201010605303 A CN 201010605303A CN 102532687 A CN102532687 A CN 102532687A
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- matrix material
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- shrinkage
- lime carbonate
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- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000004743 Polypropylene Substances 0.000 claims abstract description 33
- 239000004698 Polyethylene Substances 0.000 claims abstract description 14
- 239000000314 lubricant Substances 0.000 claims abstract description 12
- 229920001155 polypropylene Polymers 0.000 claims abstract description 9
- -1 polypropylene Polymers 0.000 claims abstract description 8
- 229920001577 copolymer Polymers 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000011159 matrix material Substances 0.000 claims description 27
- 235000012204 lemonade/lime carbonate Nutrition 0.000 claims description 20
- 239000003112 inhibitor Substances 0.000 claims description 16
- 230000003647 oxidation Effects 0.000 claims description 16
- 238000007254 oxidation reaction Methods 0.000 claims description 16
- 229920001903 high density polyethylene Polymers 0.000 claims description 15
- 239000004700 high-density polyethylene Substances 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 13
- 239000003963 antioxidant agent Substances 0.000 claims description 10
- 230000003078 antioxidant effect Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 6
- 238000005453 pelletization Methods 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 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 claims description 5
- 238000006136 alcoholysis reaction Methods 0.000 claims description 5
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical group [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 5
- 239000008116 calcium stearate Substances 0.000 claims description 5
- 235000013539 calcium stearate Nutrition 0.000 claims description 5
- 238000007334 copolymerization reaction Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 5
- 150000002989 phenols Chemical class 0.000 claims description 5
- 150000008301 phosphite esters Chemical class 0.000 claims description 5
- 230000004927 fusion Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 14
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 229920003023 plastic Polymers 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 235000010216 calcium carbonate Nutrition 0.000 abstract 4
- 229920000573 polyethylene Polymers 0.000 abstract 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 abstract 1
- 239000007822 coupling agent Substances 0.000 abstract 1
- 239000002667 nucleating agent Substances 0.000 abstract 1
- 239000008188 pellet Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000011284 combination treatment Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a composite material with low shrinkage rate and a preparation method of the composite material. The composite material comprises the following components in parts by weight: 50-80 parts of polypropylene (PP), 10-40 parts of calcium carbonate, 3-10 parts of ethylene octene copolymer (POE), 3-10 parts of compatibilizer, 0.5-5 parts of polyethylene (PE), 0.1-0.5 parts of lubricant, 0.1-0.5 parts of antioxygen and 0.1-1.0 parts of nucleating agent. The preparation method comprises the steps of treating the calcium carbonate by a silicane coupling agent; mixing and placing the materials in a double-screw extruder; controlling the rotating speed of the double-screw extruder at 180-600r/m and temperature at 180-220 DEG C; melting the materials and extruding to pellet so as to obtain the product. The PP/CaCO3 composite material with low shrinkage rate prepared by the invention has excellent strength, modulus and tenacity and calcium carbonate is safe and free from pollution so that the composite material with low shrinkage rate has excellent application prospect for plastic products with higher strength, rigidity, tenacity and low shrinkage rate.
Description
Technical field
The present invention relates to a kind of polymer composite and preparation method thereof, especially relate to matrix material of a kind of low-shrinkage and preparation method thereof.
Background technology
Vestolen PP 7052 is one of five big general-purpose plastics, and density 0.90g/cm3 is the light macromolecular material of existing resin second, and it has, and performance is good, proportion is little, be easy to characteristics such as forming process.But because the performance defect of Vestolen PP 7052 own; Can blending lime carbonate, mineral filler such as talcum powder, wollastonite, glass; Reach modification purposes such as improving flexural strength, shock strength and dimensional stability with this, thereby substitute expensive engineering plastics, PP/CaCO
3Matrix material is easy to get because of lime carbonate is with low cost and widely uses calcium carbonate-filled heat-drawn wire, rigidity and the modulus that can improve the PP matrix material; The adding of calcium carbonate superfine powder; As polyacrylic reinforcing filler; Not only can improve rigidity, surface hardness, creep resistant, the electrical insulating property of polypropylene articles, can also improve polyacrylic shock strength, improve the shock-resistant ability of PP, surface property that the system of giving is good.
At present; Calcium carbonate-filled Vestolen PP 7052 is domestic and international scientific research scholar and manufacturer's extensive concern and application already; And the trend that enlarges is arranged gradually, still, because of the shrinking percentage of PP itself higher; And lime carbonate heterogeneous nucleation effect useless itself has the PP/CaCO that satisfies the goods physical and mechanical property and low-shrinkage is arranged on the market
3Matrix material is difficult to satisfy.How this field is with adding the α nucleator to reach the purpose of the shrinking percentage that reduces matrix material at present.The α nucleator can improve the heat-drawn wire of PP, makes PP crystallization under higher Tc, and the polymer segment motor capacity is strong, and crystallization is more perfect; Can improve the strength and stiffness of material, and shock strength there is decline, affects the range of application of matrix material; And the adding of POE because of itself and PP consistency are good, is disperse phase in system; The regularity of reduction system reduces shrinking percentage, but has reduced integral intensity and modulus.
Summary of the invention
The object of the invention is exactly a kind of have higher-strength, rigidity and toughness to be provided, matrix material of the low-shrinkage of safety non-pollution and preparation method thereof for the defective that overcomes above-mentioned prior art existence.
The object of the invention can be realized through following technical scheme:
A kind of matrix material of low-shrinkage is characterized in that, this matrix material comprises following component and weight part content:
PP 50-80，
Lime carbonate 10-40,
POE 3-10，
Compatilizer 3-10,
PE 0.5-5，
Lubricant 0.1-0.5,
Oxidation inhibitor 0.1-0.5,
Nucleator 0.1-1.0.
Described PP is HOPP and the polyacrylic mixture of copolymerization.
Described lime carbonate is 3000 purpose lime carbonate.
Described POE is that melting index is the ethylene-octene copolymer of 1.0g/10min.
Described compatilizer is a maleic anhydride inoculated polypropylene.
Described PE is high density polyethylene(HDPE) (HDPE).
Described lubricant is a calcium stearate.
Described oxidation inhibitor is that Hinered phenols antioxidant and phosphite ester kind antioxidant are composite, selects antioxidant 1010 and oxidation inhibitor 168 composite.
Described nucleator is the α nucleator.
A kind of preparation method of matrix material of low-shrinkage is characterized in that, this method may further comprise the steps:
(1) with lime carbonate alcoholysis silane coupling agent and 80 ℃ of dip treating 15-30min with 1wt%;
(2) prepare raw material by following component and weight proportion:
PP 50-80, lime carbonate 10-40, compatilizer 3-10, POE 3-10, PE 0.5-5, lubricant 0.1-0.5, oxidation inhibitor 0.1-0.5, nucleator 0.1-1.0;
(3) above-mentioned raw materials was put into the high-speed mixer mixing 3-5 minute, discharging;
(4) will put into twin screw extruder through step (3) raw materials mixed, the rotating speed of control twin screw extruder is 180-600 rev/min, and temperature is 180-220 ℃, carries out extruding pelletization after the fusion, promptly obtains product.
Compared with prior art, the low-shrinkage PP/CaCO of the present invention's preparation
3Matrix material has comparatively excellent intensity, modulus and toughness, has satisfied the mechanics requirement that goods use; Reduced the goods shrinking percentage again; Optimized product quality, the safety non-pollution property of lime carbonate itself is in conjunction with current social environmental protection consciousness; In higher-strength, rigidity and toughness and require to have excellent application prospect in the plastics-production goods of low-shrinkage, can be widely used in various fields such as electronic apparatus, automobile, household electrical appliances and packing thereof.
Embodiment
Below in conjunction with specific embodiment the present invention is elaborated.
Embodiment 1～3
A kind of preparation method of matrix material of low-shrinkage may further comprise the steps:
(1) gets the raw materials ready according to following component; Each component concentration is as shown in table 1, and wherein PP is HOPP and the polyacrylic mixture of copolymerization, and POE is that melting index is the ethylene-octene copolymer of 1.0g/10min; Compatilizer is a maleic anhydride inoculated polypropylene; PE is high density polyethylene(HDPE) (HDPE), and lubricant is a calcium stearate, and oxidation inhibitor is that Hinered phenols antioxidant and phosphite ester kind antioxidant are composite; Can select for use antioxidant 1010 and oxidation inhibitor 168 by weight being 1: 1 composite, the nuclear agent is the α nucleator.
Table 1
| Material name | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| HOPP | 35 | 30 | 25 |
| COPP | 40 | 35 | 30 |
| Lime carbonate | 15 | 25 | 32 |
| POE | 5 | 5 | 8 |
| Compatilizer | 5 | 5 | 5 |
| PE | 1.5 | 1.5 | 1.5 |
| 168/1010(1∶1) | 0.4 | 0.4 | 04 |
| Nucleator | 0.2 | 0.2 | 0.2 |
(2) with lime carbonate with 80 ℃ of high temperature and high speed combination treatment of 1wt% alcoholysis silane coupling agent 20min; Then all components is put into high mixer blend 4min in proportion; The twin screw extruder extruding pelletization is used in discharging, and processing temperature is at 200 ℃; The screw rod revolution obtains product at 200rpm behind the extruding pelletization.
A kind of low-shrinkage PP/CaCO to embodiment 1 and 2 gained
3Composite sample 1 carries out the performance test contrast with sample 2, and mechanical property is tested with ISO.
Sample 1 contrasts like table 2 with sample 2 performances.
Table 2
| Test event | Embodiment 1 | Embodiment 2 |
| Tensile strength MPa | 26.7 | 29.9 |
| Elongation at break % | 106.8 | 80.2 |
| Modulus in flexure MPa | 1911.1 | 2245.6 |
| Notched Izod impact strength (23 ℃) KJ/m 2 | 25.7 | 24.1 |
| Notched Izod impact strength (40 ℃) KJ/m 2 | 11.7 | 10.9 |
| The molten g/10min that refers to | 15.3 | 14.3 |
| Shrinking percentage % | 1.1 | 1.0 |
Embodiment 3
A kind of preparation method of matrix material of low-shrinkage, this method may further comprise the steps:
A kind of preparation method of matrix material of low-shrinkage may further comprise the steps:
(1) with 3000 purpose lime carbonate alcoholysis silane coupling agent and 80 ℃ of dip treating 30min with 1wt%;
(2) prepare raw material by following component and proportioning:
PP 80kg, lime carbonate 40kg, compatilizer 10kg, POE 10kg, PE 5kg, lubricant 0.5kg, oxidation inhibitor 0.5kg, nucleator 1kg; Wherein PP is HOPP and the polyacrylic mixture of copolymerization; POE is that melting index is the ethylene-octene copolymer of 1.0g/10min, and compatilizer is a maleic anhydride inoculated polypropylene, and PE is high density polyethylene(HDPE) (HDPE); Lubricant is a calcium stearate; Oxidation inhibitor is that Hinered phenols antioxidant and phosphite ester kind antioxidant are composite, can select for use antioxidant 1010 and oxidation inhibitor 168 by weight being 1: 1 composite, and the nuclear agent is the α nucleator;
(3) above-mentioned raw materials is put into high-speed mixer and mixed discharging 5 minutes;
(4) will put into twin screw extruder through step (3) raw materials mixed, the rotating speed of control twin screw extruder is 600 rev/mins, and temperature is 180 ℃, carries out extruding pelletization after the fusion, promptly obtains product.
Embodiment 4
A kind of preparation method of matrix material of low-shrinkage may further comprise the steps:
(1) with 3000 purpose lime carbonate alcoholysis silane coupling agent and 80 ℃ of dip treating 15min with 1wt%;
(2) prepare raw material by following component and proportioning:
PP 50kg, lime carbonate 10kg, compatilizer 3kg, POE 3kg, PE 0.5kg, lubricant 0.1kg, oxidation inhibitor 0.1kg, nucleator 0.1kg; Wherein PP is HOPP and the polyacrylic mixture of copolymerization; POE is that melting index is the ethylene-octene copolymer of 1.0g/10min, and compatilizer is a maleic anhydride inoculated polypropylene, and PE is high density polyethylene(HDPE) (HDPE); Lubricant is a calcium stearate; Oxidation inhibitor is that Hinered phenols antioxidant and phosphite ester kind antioxidant are composite, can select for use antioxidant 1010 and oxidation inhibitor 168 by weight being 1: 1 composite, and the nuclear agent is the α nucleator;
(3) above-mentioned raw materials is put into high-speed mixer and mixed discharging 3 minutes;
(4) will put into twin screw extruder through step (3) raw materials mixed, the rotating speed of control twin screw extruder is 180 rev/mins, and temperature is 220 ℃, carries out extruding pelletization after the fusion, promptly obtains product.
Claims (10)
1. the matrix material of a low-shrinkage is characterized in that, this matrix material comprises following component and weight part content:
PP 50-80，
Lime carbonate 10-40,
POE 3-10，
Compatilizer 3-10,
PE 0.5-5，
Lubricant 0.1-0.5,
Oxidation inhibitor 0.1-0.5,
Nucleator 0.1-1.0.
2. the matrix material of a kind of low-shrinkage according to claim 1 is characterized in that, described PP is HOPP and the polyacrylic mixture of copolymerization.
3. the matrix material of a kind of low-shrinkage according to claim 1 is characterized in that, described lime carbonate is 3000 purpose lime carbonate.
4. the matrix material of a kind of low-shrinkage according to claim 1 is characterized in that, described POE is that melting index is the ethylene-octene copolymer of 1.0g/10min.
5. the matrix material of a kind of low-shrinkage according to claim 1 is characterized in that, described compatilizer is a maleic anhydride inoculated polypropylene.
6. the matrix material of a kind of low-shrinkage according to claim 1 is characterized in that, described PE is high density polyethylene(HDPE) (HDPE).
7. the matrix material of a kind of low-shrinkage according to claim 1 is characterized in that, described lubricant is a calcium stearate.
8. the matrix material of a kind of low-shrinkage according to claim 1 is characterized in that, described oxidation inhibitor is that Hinered phenols antioxidant and phosphite ester kind antioxidant are composite, selects antioxidant 1010 and oxidation inhibitor 168 composite.
9. the matrix material of a kind of low-shrinkage according to claim 1 is characterized in that, described nucleator is the α nucleator.
10. the preparation method of the matrix material of a low-shrinkage as claimed in claim 1 is characterized in that, this method may further comprise the steps:
(1) with lime carbonate alcoholysis silane coupling agent and 80 ℃ of dip treating 15-30min with 1wt%;
(2) prepare raw material by following component and weight proportion:
PP 50-80, lime carbonate 10-40, compatilizer 3-10, POE 3-10, PE 0.5-5, lubricant 0.1-0.5, oxidation inhibitor 0.1-0.5, nucleator 0.1-1.0;
(3) above-mentioned raw materials was put into the high-speed mixer mixing 3-5 minute, discharging;
(4) will put into twin screw extruder through step (3) raw materials mixed, the rotating speed of control twin screw extruder is 180-600 rev/min, and temperature is 180-220 ℃, carries out extruding pelletization after the fusion, promptly obtains product.
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| CN2010106053038A CN102532687A (en) | 2010-12-21 | 2010-12-21 | Composite material with low shrinkage rate and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106053038A CN102532687A (en) | 2010-12-21 | 2010-12-21 | Composite material with low shrinkage rate and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898729A (en) * | 2012-11-09 | 2013-01-30 | 华东理工大学 | Nano core-shell structure and method for beta-form synergistic toughening of polypropylene |
| CN104530520A (en) * | 2014-11-26 | 2015-04-22 | 上海邦中新材料有限公司 | Composition for enhancing dimensional stability of HDPE water supply pipe |
| CN104610656A (en) * | 2015-01-29 | 2015-05-13 | 宝鸡石油机械有限责任公司 | High and low temperature resin material for plastic coating (impregnating) of steel wire ropes |
| CN105086157A (en) * | 2015-09-14 | 2015-11-25 | 苏州法斯特信息科技有限公司 | Antistatic and anti-aging plastic used for automotive interior trim and preparation method thereof |
| CN106117787A (en) * | 2016-07-01 | 2016-11-16 | 山东玉皇化工有限公司 | A kind of small scale bulk powder polypropylene of toughening modifying and preparation method thereof |
| CN108148285A (en) * | 2016-12-05 | 2018-06-12 | 合肥杰事杰新材料股份有限公司 | A kind of low after-contraction PP composite material of car insurance bar and preparation method thereof |
| CN109294072A (en) * | 2017-07-25 | 2019-02-01 | 中国石油化工股份有限公司 | Polypropene composition and polypropylene material and its application |
| CN109749248A (en) * | 2018-12-29 | 2019-05-14 | 正雄箱包（河源）有限公司 | A kind of polypropylene modified material and preparation method thereof and luggage |
| CN112210162A (en) * | 2019-07-09 | 2021-01-12 | 杭州联和工具制造有限公司 | Calcium carbonate filled PP composite material and method for manufacturing plastic part |
| CN114479281A (en) * | 2022-03-15 | 2022-05-13 | 广东国立科技股份有限公司 | Low-molding-shrinkage shading PP material and preparation method thereof |
| CN115742489A (en) * | 2022-12-15 | 2023-03-07 | 江西省盛纬材料有限公司 | Thermal-process aluminum-plastic composite film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898729A (en) * | 2012-11-09 | 2013-01-30 | 华东理工大学 | Nano core-shell structure and method for beta-form synergistic toughening of polypropylene |
| CN102898729B (en) * | 2012-11-09 | 2014-12-24 | 华东理工大学 | Nano core-shell structure and method for beta-form synergistic toughening of polypropylene |
| CN104530520A (en) * | 2014-11-26 | 2015-04-22 | 上海邦中新材料有限公司 | Composition for enhancing dimensional stability of HDPE water supply pipe |
| CN104610656A (en) * | 2015-01-29 | 2015-05-13 | 宝鸡石油机械有限责任公司 | High and low temperature resin material for plastic coating (impregnating) of steel wire ropes |
| CN105086157A (en) * | 2015-09-14 | 2015-11-25 | 苏州法斯特信息科技有限公司 | Antistatic and anti-aging plastic used for automotive interior trim and preparation method thereof |
| CN106117787A (en) * | 2016-07-01 | 2016-11-16 | 山东玉皇化工有限公司 | A kind of small scale bulk powder polypropylene of toughening modifying and preparation method thereof |
| CN108148285A (en) * | 2016-12-05 | 2018-06-12 | 合肥杰事杰新材料股份有限公司 | A kind of low after-contraction PP composite material of car insurance bar and preparation method thereof |
| CN109294072A (en) * | 2017-07-25 | 2019-02-01 | 中国石油化工股份有限公司 | Polypropene composition and polypropylene material and its application |
| CN109294072B (en) * | 2017-07-25 | 2021-11-19 | 中国石油化工股份有限公司 | Polypropylene composition, polypropylene material and application thereof |
| CN109749248A (en) * | 2018-12-29 | 2019-05-14 | 正雄箱包（河源）有限公司 | A kind of polypropylene modified material and preparation method thereof and luggage |
| CN112210162A (en) * | 2019-07-09 | 2021-01-12 | 杭州联和工具制造有限公司 | Calcium carbonate filled PP composite material and method for manufacturing plastic part |
| CN114479281A (en) * | 2022-03-15 | 2022-05-13 | 广东国立科技股份有限公司 | Low-molding-shrinkage shading PP material and preparation method thereof |
| CN115742489A (en) * | 2022-12-15 | 2023-03-07 | 江西省盛纬材料有限公司 | Thermal-process aluminum-plastic composite film and preparation method thereof |
| CN115742489B (en) * | 2022-12-15 | 2023-10-03 | 江西省盛纬材料有限公司 | Thermal aluminum-plastic composite film and preparation method thereof |
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Application publication date: 20120704 |