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Low-shrinkage polypropylene composition and preparation method thereof

A technology of polypropylene composition and low shrinkage, which is applied in the field of modified polypropylene composition and its preparation, low shrinkage polypropylene composition and its preparation, and can solve the problem of high cost of modification, high addition amount, etc. problems, to achieve excellent balance between rigidity and toughness, easy operation and low cost

Active Publication Date: 2013-03-06
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the market price of Hifax7271A is more than 10,000 yuan per ton higher than that of polypropylene in the same period, and the relative addition amount is relatively high, it needs to be used in conjunction with other elastomer POE, so the modification cost of this type of material is relatively high

Method used

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  • Low-shrinkage polypropylene composition and preparation method thereof
  • Low-shrinkage polypropylene composition and preparation method thereof
  • Low-shrinkage polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0029] The formulations of the components of Examples 1-5 are shown in Table 1, the performance indicators are shown in Table 2, and the raw material grades and performance parameters are shown in Table 5.

Embodiment 6～10

[0031] The formulations of the components of Examples 6-10 are shown in Table 3, the performance indicators are shown in Table 4, and the raw material grades and performance parameters are shown in Table 5.

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Abstract

The invention relates to a low-shrinkage polypropylene composition and a preparation method thereof, belonging to the technical field of high polymer materials. The low-shrinkage polypropylene composition is prepared from the following raw materials in parts by mass: 35-87 parts of polypropylene resin, 10-30 parts of inorganic powder, 2-35 parts of metallocene linear low-density polyethylene, 1-5 parts of toughener and 0.05-0.3 part of weather-resistant assistant. According to the invention, the modified polypropylene composition having a low shrinkage is prepared by taking impact polypropylene copolymer as a base resin, adding the inorganic powder, the metallocene linear low-density polyethylene and the toughener and extruding and granulating with a double-screw extruder; the prepared polypropylene composition has low cost, low shrinkage, excellent rigidity-toughness balance, high glossiness and favorable processing flowability; and the preparation method is simple and easy to implement and easy to operate.

Description

technical field [0001] The invention relates to a low-shrinkage polypropylene composition and a preparation method thereof, in particular to a low-shrinkage modified polypropylene composition and a preparation method of the composition, and belongs to the technical field of polymer materials. Background technique [0002] Polypropylene (PP) is one of the most widely used varieties among the five synthetic resins. It has the characteristics of low density, good mechanical properties, good chemical resistance and insulation, non-toxic during processing, and easy recycling. It has been widely used in Automobiles, home appliances, packaging, daily necessities, chemicals, construction, and chemical fibers, etc., but PP also has disadvantages such as poor low-temperature toughness and large molding shrinkage. In the fields of automobiles and household appliances, polypropylene is used after modification. With the enrichment of polypropylene resin varieties and the improvement of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/08C08K13/02C08K3/34C08K3/26C08K5/3475B29B9/06
Inventor 李延亮唐岩李丽王秀丽许平黄峰
Owner CHINA PETROLEUM & CHEM CORP
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