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A kind of rubber toughened polypropylene compound and its application

A technology of rubber toughening and polypropylene, which is applied in the field of polymer materials and their molding processing, can solve the problems of poor dispersion effect, achieve the effects of reducing the average particle size, promoting dispersion, and excellent impact performance at abnormal temperature and low temperature

Active Publication Date: 2020-06-09
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor dispersion of the above-mentioned elastomer in the polypropylene matrix, the purpose of the present invention is to provide a rubber-toughened polypropylene compound, which can greatly improve the Rigidity of the material

Method used

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  • A kind of rubber toughened polypropylene compound and its application
  • A kind of rubber toughened polypropylene compound and its application
  • A kind of rubber toughened polypropylene compound and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-12 and comparative example 1-7

[0039] Weigh the components according to the parts by weight shown in Table 1, and melt, mix and disperse polypropylene, elastomer, talcum powder, heat stabilizer and lubricant in a twin-screw extruder with a length-to-diameter ratio of 40:1. The temperature was maintained at the melting temperature of 180-210°C, extruded and granulated, and rubber-toughened polypropylene composites were finally obtained. Corresponding test samples were made according to the standards, and their mechanical properties were measured. The specific values ​​are listed in Table 1.

[0040] Table 1 Composition and properties of rubber-toughened polypropylene compounds

[0041]

[0042] Continued Table 1

[0043]

[0044] Continuation of Table 1:

[0045]

[0046] Each performance test is carried out according to the standards in Table 3 below:

[0047] table 3:

[0048]

[0049] It can be seen from the test results of various examples and comparative examples that the present inventio...

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Abstract

Disclosed are a rubber-toughened polypropylene composite and the use thereof. The composite comprises the following components: 45 parts - 69 parts of polypropylene; 15 parts - 25 parts of talc powder; 15 parts - 25 parts of an elastomer; and 1 part - 5 parts of a lubricant, wherein the lubricant is a compound of an internal lubricant and an external lubricant; and the mass ratio of the internal lubricant to the external lubricant is 1 : 4 to 4 : 1. In the present invention, the compound of an internal lubricant and an external lubricant is used in the polypropylene / talc powder / elastomer formulation system, and the compound proportion of the two is controlled to be within a certain range, such that the surface tension of the elastomer and the polypropylene is decreased during blending so as to effectively reduce the average particle size of the elastomer in a polypropylene matrix and promote the good dispersion of the elastomer in the polypropylene matrix, thereby greatly improving the rigidity of the material while ensuring that the material has excellent normal-temperature and low-temperature impact properties, avoiding the problem of a significant decrease in the rigidity of the material, and meeting the need for the development of automobile interior decorating materials.

Description

technical field [0001] The invention belongs to the field of polymer materials and their molding processing, and in particular relates to a rubber-toughened polypropylene compound and its application in automobile interior decoration. Background technique [0002] With the rapid development of the petrochemical industry, polypropylene materials have gradually replaced traditional engineering plastics such as ABS, PC / ABS, PBT, and PA due to their high cost-effective advantages, and have been widely used in automotive interior materials. [0003] Polypropylene used in automotive interior materials is usually required to have excellent impact properties at room temperature and low temperature. In order to meet this requirement, a large amount of elastomer is usually added. However, the compatibility of elastomers with polypropylene is generally poor. Under the condition of relatively high content, the dispersion effect of the elastomer in the polypropylene matrix is ​​very poor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/08C08L23/06C08K13/02C08K3/34C08K5/134C08K5/20C08K5/098
CPCC08L23/12C08L2205/02C08L2205/03C08L23/0815C08L23/06C08K13/02C08K3/34C08K5/1345C08K5/20C08K5/098
Inventor 吴国峰孙刚杨波丁正亚罗忠富钱志军俞飞陈业中李伟
Owner KINGFA SCI & TECH CO LTD
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