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High-rigidity, high-toughness and high-fluidity polypropylene composite material and preparation method thereof

A technology of flowing polypropylene and composite materials, used in high-flow polypropylene composite materials and their preparation, high-rigidity, high-toughness fields, can solve the problem that the crystallization speed and crystallinity of the material are difficult to achieve, the cooling time is short, and the parts are warped and deformed. and other problems, to achieve the effect of easy large-scale industrial production, low cost and simple preparation process

Inactive Publication Date: 2020-08-04
四川鑫达企业集团有限公司
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  • Summary
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AI Technical Summary

Problems solved by technology

Injection molding of thin-walled materials is a rapid mold filling process with short cooling time, and it is difficult to achieve consistent crystallization speed and crystallinity of materials at different positions, so the parts after injection molding are prone to warping and deformation

Method used

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Embodiment Construction

[0014] A high-rigidity, high-toughness, high-flow polypropylene composite material consists of the following mass percentages:

[0015] Copolymer polypropylene 52~71.2%

[0016] Inorganic filler 20~30%

[0017] Toughener 8~15%

[0018] Lubricant 0.2~1%

[0019] Antioxidant 0.4~1%

[0020] Nucleating agent 0.2-1%

[0021] 1. Preferably, said copolymerized polypropylene is composed of at least one kind of copolymerized polypropylene. The melt index of polypropylene copolymer is 30-100g / 10min (230℃, 2.16Kg). 2. Preferably, the filler is at least one of talcum powder masterbatch, wollastonite masterbatch, mica powder, and whiskers. It is further preferred that the filler is talcum powder masterbatch from Heshan Jiaquan Co., Ltd., with a particle size of 1-15μm, the proportion of talcum powder is 72-75%. 3. Preferably, the toughening agent is composed of at least one of ethylene-octene copolymer (POE), SEBS, and EPDM. It is further preferred that the toughening agent is POE...

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Abstract

The invention discloses a high-rigidity, high-toughness and high-fluidity polypropylene composite material and a preparation method thereof. The polypropylene composite material is composed of the following raw materials in percentage by mass: 52-71.2% of polypropylene, 20-30% of an inorganic filler, 8-15% of a toughening agent, 0.2-1% of a lubricant, 0.4-1% of an antioxidant, and 0.2-1% of a nucleating agent. The polypropylene composite material has the advantages that the prepared polypropylene composite material has the characteristics of high modulus, high impact resistance and high flowability; the polypropylene composite material meets the requirements of thin-walled materials for vehicles, can reduce the mass of the whole vehicle and achieve the effect of light weight, can achieve more ideal rigidity and toughness balance compared with traditional polypropylene, and is simple in preparation process, low in cost and easy for large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a high-rigidity, high-toughness, high-fluidity polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene is widely used in many fields such as automobiles, household appliances, food, medical treatment, and construction pipes due to its outstanding advantages such as excellent mechanics, heat resistance, light weight, chemical solvent resistance, low water absorption, and low price. With the further improvement of the country's requirements for energy conservation and emission reduction and the rapid development of China's automobile industry, automobile lightweight has become an important way for automobile energy conservation and emission reduction, and has become the main trend of automobile development. Thin-walled materials are one of the important directions for the development of automobile lightweight. As t...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/12C08L23/08C08L53/02C08L23/16C08L23/06C08K13/04C08K3/34C08K5/098
CPCC08K2201/003C08K2201/014C08L23/14C08L2205/035C08L2205/06C08L23/12C08L23/0815C08L53/025C08L23/16C08L23/06C08K13/04C08K3/34C08K5/098
Inventor 张毅赵武学贾宇冲
Owner 四川鑫达企业集团有限公司
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