CN103254507A - Stress-whitening-resistant filling-modified polypropylene composite material and preparation method thereof - Google Patents
Stress-whitening-resistant filling-modified polypropylene composite material and preparation method thereof Download PDFInfo
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- CN103254507A CN103254507A CN2012100351189A CN201210035118A CN103254507A CN 103254507 A CN103254507 A CN 103254507A CN 2012100351189 A CN2012100351189 A CN 2012100351189A CN 201210035118 A CN201210035118 A CN 201210035118A CN 103254507 A CN103254507 A CN 103254507A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92923—Calibration, after-treatment or cooling zone
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a stress-whitening-resistant filling-modified polypropylene composite material. The composite material comprises the following components by weight parts: 55-75 parts of polypropylene, 5-20 parts of a flexibilizer, 20-30 parts of mineral fillers, 0.2-0.4 parts of a dispersant, 0.1-0.3 parts of a coupling agent, 0.1-0.3 parts of a phenols anti-oxidant 1010, 0.1-0.3 parts of a phosphite anti-oxidant 168, 0.01-0.03 parts of a hindered amine light stabilizer V703, 0.01-0.1 parts of an initiator and 0.2-0.5 parts of a auxiliary crosslinking agent. The invention further discloses a preparation method of the stress-whitening-resistant filling-modified polypropylene composite material. According to the invention, through the initiator and the auxiliary crosslinking agent, interaction of each phase in a blending system is improved, the problem of stress whitening can be fundamentally solved through forming part chemical bonds, a production cost is low and performances are stable.
Description
Technical field
The present invention relates to technical field of polymer composite materials, relate in particular to a kind of anti-stress whitening filled modified polypropylene matrix material and preparation method thereof.
Background technology
Polypropylene (PP) has anti-bending performance (being commonly called as polypropylene (PP)) preferably, have simultaneously nontoxic, tasteless, density is little, intensity and hardness big and advantage such as good heat resistance, is general thermoplastic resin.Fierceness, the harshness day by day of environment for use and improving constantly of product properties day by day along with market competition, all trades and professions are to the demands for higher performance of polypropylene (PP), plain polypropylene (PP) is own through being difficult to satisfy industry requirement, in order to satisfy different requirements, need carry out different modifications to polypropylene (PP) and handle, make it adapt to different demands.
Modified polypropene is used for injecting products and when zero device assembling, at the push rod place or assembling place easily produce blushing, thereby influence outward appearance even cause product defective.Therefore, how on the basis that guarantees the material over-all properties, solve the problem of stress whitening, become a difficult problem that needs to be resolved hurrily.Solve the problem of filled modified polypropylene stress whitening, now existing patent CN101709124A and CN 102020806A reported respectively, improve the respectively physical force between the phase by adding low molecular weight polyethylene sodium and maleic anhydride inoculated polypropylene, thereby solve the problem of the stress whitening of filled modified polypropylene.
Stress whitening is that material produces crazing under stress, the further expansion of crazing is concentrated and has namely been produced a large amount of tiny crack accumulation area (according to stress whitening degree size and generation area, crazing, crackle and the micropore that may comprise some amount), owing to this regional refractive index reduces a kind of phenomenon that presents white.The matrix material stress whitening main with system the phase structure and phase interface between effect relevant, namely each corresponding force strain rate difference is more little in the system, interface interaction power is more strong, the possibility of stress whitening is just more low.
Prior art mainly by the physical force between each phase in the raising system, by the expansion of crazing to crackle, is turned white thereby reduce or eliminate stress when the reduction system is stressed.This method of turning white that eliminates stress can only be the possibility that has reduced stress whitening to a certain extent, turns white and can not fundamentally eliminate stress.
Summary of the invention
The present invention provides a kind of anti-stress whitening filled modified polypropylene matrix material and preparation method thereof for the problem that solves above-mentioned prior art existence.The present invention makes in the system and forms chemical bond between each phase by the method for chemically crosslinked, turns white thereby fundamentally eliminate stress.
Purpose of the present invention is achieved through the following technical solutions:
A kind of anti-stress whitening filled modified polypropylene matrix material, made by the component that comprises following weight part:
Polypropylene 55-75 part,
Toughner 5-20 part,
Mineral filler 20-30 part,
Dispersion agent 0.2-0.4 part,
Coupling agent 0.1-0.3 part,
Phenolic antioxidant 1010 0.1-0.3 parts,
Phosphite ester kind antioxidant 168 0.1-0.3 parts,
The steady agent V703 of hindered amines light 0.01-0.03 part,
Initiator 0.01-0.1 part,
Additional crosslinker 0.2-0.5 part.
Preferably, the parts by weight sum of described polypropylene, toughner and mineral filler is 100 parts.
Preferably, described polypropylene is the molten Co-polypropylene that refers at 20-30g/10min.
Preferably, described toughner is selected from polyolefin elastomer POE, and described POE is the thermoplastic elastomer of tensile strength between 10-15MPa.
Preferably, to be selected from granularity be 800-1250 purpose talcum powder to described mineral filler.
Preferably, described dispersion agent is selected from ethylene bis stearic acid amide.
Preferably, described coupling agent is selected from silane resin acceptor kh-550, and its purity is greater than 97%.
Preferably, described initiator is selected from dicumyl peroxide.
Preferably, described additional crosslinker is selected from divinylbenzene.
A kind of preparation method of anti-stress whitening filled modified polypropylene matrix material may further comprise the steps:
(1) takes by weighing each component raw material by following weight part: polypropylene 55-75 part, toughner 5-20 part, mineral filler 20-30 part, dispersion agent 0.2-0.4 part, coupling agent 0.1-0.3 part, phenolic antioxidant 1010 0.1-0.3 parts, phosphite ester kind antioxidant 168 0.1-0.3 parts, the steady agent V703 of hindered amines light 0.01-0.03 part, initiator 0.01-0.1 part, additional crosslinker 0.2-0.5 part;
(2) mineral filler is added high-speed mixer, after adding dispersion agent and coupling agent process 800-1000rpm stirring 1-5min then, add polypropylene, toughner, phenolic antioxidant 1010, phosphite ester kind antioxidant 168, the steady agent V703 of hindered amines light, initiator and additional crosslinker more successively, stir the mixture that 5-8min obtains mixing through 800-1000rpm; The initiator that wherein adds is deployed into 2% solution earlier with dissolve with ethanol, add in the high-speed mixer through leaving standstill again after 24 hours;
(3) mixture that mixes is got final product by extruding pelletization in the feed opening adding twin screw extruder, wherein each section of forcing machine temperature is between 180-230 ℃, and rotating speed is 200-300 rpm.
Preferably, the parts by weight sum of described polypropylene, toughner and mineral filler is 100 parts.
Compared with prior art, the present invention has following beneficial effect:
Anti-stress whitening filled modified polypropylene matrix material of the present invention by adding peroxide initiator and additional crosslinker, improves the interaction force of each phase in the co-mixing system, divides chemical bond fundamentally to solve the problem of stress whitening by forming portion.Complete processing of the present invention is simple, and mechanical property is good, by increasing each interaction between mutually and the intensity of matrix, thereby fundamentally eliminates the defective of filled modified polypropylene stress whitening.The present invention has the characteristic of anti-stress whitening, and it is low to have a production cost, the advantage of stable performance.
Embodiment
Describe the present invention in detail below in conjunction with each embodiment.
The component of embodiment 1-3 and proportioning (weight part) see Table 1.
Wherein, the steady agent V703 of hindered amines light is available from Shanghai Bin Gang trading company, and silane resin acceptor kh-550 is available from Hangzhou boiling point chemical industry company limited.
The preparation method is as follows:
(1) take by weighing each raw material by component shown in the table 1 and weight part:
(2) the mineral filler talcum powder is added high-speed mixer, after adding dispersion agent ethylene bis stearic acid amide and silane resin acceptor kh-550 process 800rpm stirring 5min then, add Co-polypropylene, toughner POE, phenolic antioxidant 1010, phosphite ester kind antioxidant 168, the steady agent V703 of hindered amines light, initiator dicumyl peroxide and additional crosslinker divinylbenzene more successively, stir the mixture that 5min obtains mixing through 1000rpm; The initiator dicumyl peroxide that wherein adds is deployed into 2% solution earlier with dissolve with ethanol, add in the high-speed mixer through leaving standstill again after 24 hours;
(3) mixture that mixes is got final product by extruding pelletization in the feed opening adding twin screw extruder, wherein each section of forcing machine temperature is between 180-230 ℃, and rotating speed is 200rpm.
The product that embodiment 1-3 is prepared carries out performance test according to national standard, and The performance test results sees Table 2.
Table 1
Table 2
The present invention causes PP, POE by dicumyl peroxide DCP and produces free radical, by the additional crosslinker divinylbenzene free radical is of coupled connections then, increase the phase interface reactive force between each phase, reduce the stress-strain speed difference opposite sex between the various phase structures, thereby fundamentally solve the stress whitening phenomenon.
By the The performance test results of embodiment 1-3 as can be seen, by regulating the ratio of component in the matrix, can obtain the different filled modified polypropylene matrix material of mechanical property.These systems can be for the production of the different component structural of various requirement, thereby can satisfy different product properties requirements.
Embodiment 4
(1) take by weighing each component raw material by following weight part:
65 parts of Co-polypropylene (the molten finger at 20g/10min),
10 parts of toughner POE (tensile strength is at 10MPa),
25 parts of mineral filler talcum powder (granularity is 800 orders),
0.4 part of dispersion agent ethylene bis stearic acid amide,
0.1 part of silane resin acceptor kh-550 (purity is greater than 97%),
0.1 part of antioxidant 1010,
168 0.3 parts in oxidation inhibitor,
0.015 part of the steady agent V703 of light,
0.01 part of initiator dicumyl peroxide,
0.2 part of additional crosslinker divinylbenzene;
(2) mineral filler is added high-speed mixer, after adding dispersion agent and coupling agent process 1000rpm stirring 1min then, add polypropylene, toughner, phenolic antioxidant 1010, phosphite ester kind antioxidant 168, the steady agent V703 of hindered amines light, initiator and additional crosslinker more successively, stir the mixture that 8min obtains mixing through 800rpm; The initiator that wherein adds is deployed into 2% solution earlier with dissolve with ethanol, add in the high-speed mixer through leaving standstill again after 24 hours;
(3) mixture that mixes is got final product by extruding pelletization in the feed opening adding twin screw extruder, wherein each section of forcing machine temperature is between 180-230 ℃, and rotating speed is 300 rpm.
Embodiment 5
(1) take by weighing each component raw material by following weight part:
70 parts of Co-polypropylene (the molten finger at 30g/10min),
5 parts of toughner POE (tensile strength is at 15MPa),
30 parts of mineral filler talcum powder (granularity is 1250 orders),
0.35 part of dispersion agent ethylene bis stearic acid amide,
0.2 part of silane resin acceptor kh-550 (purity is greater than 97%),
0.3 part of antioxidant 1010,
168 0.1 parts in oxidation inhibitor,
0.015 part of the steady agent V703 of light,
0.1 part of initiator dicumyl peroxide,
0.4 part of additional crosslinker divinylbenzene;
(2) mineral filler is added high-speed mixer, after adding dispersion agent and coupling agent process 900rpm stirring 3min then, add polypropylene, toughner, phenolic antioxidant 1010, phosphite ester kind antioxidant 168, the steady agent V703 of hindered amines light, initiator and additional crosslinker more successively, stir the mixture that 6min obtains mixing through 850rpm; The initiator that wherein adds is deployed into 2% solution earlier with dissolve with ethanol, add in the high-speed mixer through leaving standstill again after 24 hours;
(3) mixture that mixes is got final product by extruding pelletization in the feed opening adding twin screw extruder, wherein each section of forcing machine temperature is between 180-230 ℃, and rotating speed is 250 rpm.
More than disclosed only be several specific embodiments of the application, but the application is not limited thereto, any those skilled in the art can think variation, all should drop in the application's the protection domain.
Claims (10)
1. an anti-stress whitening filled modified polypropylene matrix material is characterized in that, is made by the component that comprises following weight part:
Polypropylene 55-75 part,
Toughner 5-20 part,
Mineral filler 20-30 part,
Dispersion agent 0.2-0.4 part,
Coupling agent 0.1-0.3 part,
Phenolic antioxidant 1010 0.1-0.3 parts,
Phosphite ester kind antioxidant 168 0.1-0.3 parts,
The steady agent V703 of hindered amines light 0.01-0.03 part,
Initiator 0.01-0.1 part,
Additional crosslinker 0.2-0.5 part.
2. anti-stress whitening filled modified polypropylene matrix material as claimed in claim 1 is characterized in that the parts by weight sum of described polypropylene, toughner and mineral filler is 100 parts.
3. anti-stress whitening filled modified polypropylene matrix material as claimed in claim 1 is characterized in that, described polypropylene is the molten Co-polypropylene that refers at 20-30g/10min.
4. anti-stress whitening filled modified polypropylene matrix material as claimed in claim 1 is characterized in that described toughner is selected from polyolefin elastomer POE, and described POE is the thermoplastic elastomer of tensile strength between 10-15MPa.
5. anti-stress whitening filled modified polypropylene matrix material as claimed in claim 1 is characterized in that, it is 800-1250 purpose talcum powder that described mineral filler is selected from granularity.
6. anti-stress whitening filled modified polypropylene matrix material as claimed in claim 1 is characterized in that described dispersion agent is selected from ethylene bis stearic acid amide.
7. anti-stress whitening filled modified polypropylene matrix material as claimed in claim 1 is characterized in that described coupling agent is selected from silane resin acceptor kh-550, and its purity is greater than 97%.
8. anti-stress whitening filled modified polypropylene matrix material as claimed in claim 1 is characterized in that described initiator is selected from dicumyl peroxide; Described additional crosslinker is selected from divinylbenzene.
9. the preparation method as each described anti-stress whitening filled modified polypropylene matrix material in the claim 1 to 8 is characterized in that, may further comprise the steps:
(1) takes by weighing each component raw material by following weight part: polypropylene 55-75 part, toughner 5-20 part, mineral filler 20-30 part, dispersion agent 0.2-0.4 part, coupling agent 0.1-0.3 part, phenolic antioxidant 1010 0.1-0.3 parts, phosphite ester kind antioxidant 168 0.1-0.3 parts, the steady agent V703 of hindered amines light 0.01-0.03 part, initiator 0.01-0.1 part, additional crosslinker 0.2-0.5 part;
(2) mineral filler is added high-speed mixer, after adding dispersion agent and coupling agent process 800-1000rpm stirring 1-5min then, add polypropylene, toughner, phenolic antioxidant 1010, phosphite ester kind antioxidant 168, the steady agent V703 of hindered amines light, initiator and additional crosslinker more successively, stir the mixture that 5-8min obtains mixing through 800-1000rpm; The initiator that wherein adds is deployed into 2% solution earlier with dissolve with ethanol, add in the high-speed mixer through leaving standstill again after 24 hours;
(3) mixture that mixes is got final product by extruding pelletization in the feed opening adding twin screw extruder, wherein each section of forcing machine temperature is between 180-230 ℃, and rotating speed is 200-300 rpm.
10. the preparation method of anti-stress whitening filled modified polypropylene matrix material as claimed in claim 9 is characterized in that, the parts by weight sum of described polypropylene, toughner and mineral filler is 100 parts.
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| CN201210035118.9A CN103254507B (en) | 2012-02-16 | 2012-02-16 | A kind of resistance to stress is turned white filled modified polypropylene composite and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788493A (en) * | 2014-02-28 | 2014-05-14 | 苏州瑞邦塑胶有限公司 | Formula of reinforced polypropylene plastic |
| CN104292632A (en) * | 2014-09-29 | 2015-01-21 | 苏州博利迈新材料科技有限公司 | High-toughness fender material and preparation method thereof |
| CN104558836A (en) * | 2014-12-22 | 2015-04-29 | 上海普利特复合材料股份有限公司 | Scratching-resistant polypropylene composite material capable of resisting stress whitening and preparation method thereof |
| CN104592628A (en) * | 2014-12-22 | 2015-05-06 | 上海普利特复合材料股份有限公司 | High-toughness high-rigidity modified polypropylene material and preparation method thereof |
| CN105949608A (en) * | 2016-05-31 | 2016-09-21 | 江苏金发科技新材料有限公司 | Polypropylene composite material with excellent stress buffering and absorbing and preparation method thereof |
| CN106905600A (en) * | 2015-12-22 | 2017-06-30 | 上海邦中高分子材料有限公司 | A kind of 3D printing modified polypropylene composite material and preparation method thereof |
| CN107216545A (en) * | 2017-05-24 | 2017-09-29 | 广东圆融新材料有限公司 | A kind of dynamic crosslinking PP/PE intermingling materials for characteristic of turning white with low-density high-impact proof stress and preparation method thereof |
| CN107619536A (en) * | 2017-08-08 | 2018-01-23 | 深圳沃海森科技有限公司 | Wear-resistant plastic knob sheath material used for automobile air conditioning and preparation method thereof |
| CN109054182A (en) * | 2018-08-06 | 2018-12-21 | 安徽华祺汽车装饰有限公司 | A kind of terpolymer reinforced polypropylene |
| CN111607162A (en) * | 2020-06-30 | 2020-09-01 | 上海中塑管业有限公司 | Marine plastic pipe and preparation method thereof |
| CN114752149A (en) * | 2022-03-11 | 2022-07-15 | 上海金发科技发展有限公司 | Low-temperature-bending-whitening-resistant polypropylene composite material and preparation method and application thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788493A (en) * | 2014-02-28 | 2014-05-14 | 苏州瑞邦塑胶有限公司 | Formula of reinforced polypropylene plastic |
| CN104292632A (en) * | 2014-09-29 | 2015-01-21 | 苏州博利迈新材料科技有限公司 | High-toughness fender material and preparation method thereof |
| CN104558836A (en) * | 2014-12-22 | 2015-04-29 | 上海普利特复合材料股份有限公司 | Scratching-resistant polypropylene composite material capable of resisting stress whitening and preparation method thereof |
| CN104592628A (en) * | 2014-12-22 | 2015-05-06 | 上海普利特复合材料股份有限公司 | High-toughness high-rigidity modified polypropylene material and preparation method thereof |
| CN106905600A (en) * | 2015-12-22 | 2017-06-30 | 上海邦中高分子材料有限公司 | A kind of 3D printing modified polypropylene composite material and preparation method thereof |
| CN105949608A (en) * | 2016-05-31 | 2016-09-21 | 江苏金发科技新材料有限公司 | Polypropylene composite material with excellent stress buffering and absorbing and preparation method thereof |
| CN107216545A (en) * | 2017-05-24 | 2017-09-29 | 广东圆融新材料有限公司 | A kind of dynamic crosslinking PP/PE intermingling materials for characteristic of turning white with low-density high-impact proof stress and preparation method thereof |
| CN107619536A (en) * | 2017-08-08 | 2018-01-23 | 深圳沃海森科技有限公司 | Wear-resistant plastic knob sheath material used for automobile air conditioning and preparation method thereof |
| CN109054182A (en) * | 2018-08-06 | 2018-12-21 | 安徽华祺汽车装饰有限公司 | A kind of terpolymer reinforced polypropylene |
| CN111607162A (en) * | 2020-06-30 | 2020-09-01 | 上海中塑管业有限公司 | Marine plastic pipe and preparation method thereof |
| CN111607162B (en) * | 2020-06-30 | 2023-06-23 | 上海中塑管业有限公司 | Marine plastic pipe and preparation method thereof |
| CN114752149A (en) * | 2022-03-11 | 2022-07-15 | 上海金发科技发展有限公司 | Low-temperature-bending-whitening-resistant polypropylene composite material and preparation method and application thereof |
| CN114752149B (en) * | 2022-03-11 | 2023-09-26 | 上海金发科技发展有限公司 | Low Wen Wanshe blushing-resistant polypropylene composite material and preparation method and application thereof |
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