Novel polypropylene composite resin composition for automobile

A composite resin and polypropylene technology, which is applied in the field of automotive materials, can solve the problems of difficulty in balancing strength and impact properties, and difficulty in interchangeability of materials for different parts.

Inactive Publication Date: 2016-04-20
QINGDAO LIBO AUTO PARTS PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the current resin composition for automotive interior and exterior decoration needs to solve the problem that the strength and impact properties are difficult to balance and the materials for different parts are difficult to interchange and use, a solution is now provided

Method used

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  • Novel polypropylene composite resin composition for automobile
  • Novel polypropylene composite resin composition for automobile
  • Novel polypropylene composite resin composition for automobile

Examples

Experimental program
Comparison scheme
Effect test

example 1～3 and comparative example 1～3

[0051] Table five

[0052] composition

Example 1

Example 2

Example 3

Comparative example 1

Comparative example 2

Comparative example 3

Polypropylene 1

65

30

65

65

65

Polypropylene 2

65

35

whiskers

3

3

2

10

20

Talc

17

17

18

20

10

impact enhancer

15

15

15

15

15

15

[0053] Table six

[0054]

[0055] From the results of physical properties in Table 6 above, Example 1 using part of the whiskers has better flexural modulus and heat resistance than Comparative Example 1 using only talc. From Examples 1 to 3, it can be seen that in materials using highly crystalline polypropylene resin materials, the difference in shrinkage in the MD (flow direction / TD (vertical flow direction) direction can be minimized by adjusting the weight ratio of whiskers and talc, and Optimum b...

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Abstract

The invention discloses a novel polypropylene composite resin composition for an automobile. The novel polypropylene composite resin composition is prepared from, by weight, 40-90% of high-crystallinity polypropylene with the isotactic index of 96% or above, 5-30% of an enhancer containing whiskers and 5-30% of an impact modifier. By compositing high-crystallinity polypropylene with excellent properties with talcum and whiskers, strength and heat resistance are maximized, needed impact strength of an automobile material is ensured, factors influencing strength and other properties are minimized, and the polypropylene resin composition with balanced strength, heat resistance and impact strength is obtained and can be widely applied to manufacturing of automobile interior and exterior decoration products. It is needed to consider the minimum use quantity of whiskers so that influences on the shrinkage rate in the MD/TD can be minimized.

Description

technical field [0001] The invention relates to the technical field of materials for automobiles, in particular to a novel polypropylene composite resin composition for automobiles. Background technique [0002] As a material for automobiles, the use of polypropylene composite resin is gradually increasing due to the advantages of low price, renewable materials and light weight. In order to overcome the limitations of its own physical properties, talcum powder, calcium carbonate, glass fiber, mica, wollastonite and other reinforcing agents and EPDM rubber, binary ethylene propylene rubber, ethylene-EPDM, ethylene-butylene elastomers , Ethylene-octene elastomers, etc. are blended with polypropylene to produce polymer materials suitable for automobiles with excellent physical properties. [0003] Generally, the aspect ratio (AspectRation) of the reinforcing agent affects the strength of the polypropylene resin composition, which is a well-known fact in the industry. Glass fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/16C08L53/00C08L23/08C08K7/08C08K3/34C08K3/26C08K7/14C08K3/30
CPCC08L23/12C08K2201/003C08K2201/004C08L23/142C08L2201/08C08L2207/10
Inventor 柴叶飞
Owner QINGDAO LIBO AUTO PARTS PRECISION CASTING
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