Polypropylene composition for low foaming and preparation process thereof

A polypropylene composition and low-foaming technology, which is applied in the field of low-foaming polypropylene composition and its preparation, can solve the problems of affecting the rigidity of materials, increasing material costs, energy saving and weight reduction effects of products are not obvious, and achieve Good processing performance, small and uniform cell size, and excellent comprehensive mechanical properties

Active Publication Date: 2013-06-12
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is mentioned in the literature that 10% ethylene / octene copolymer needs to be added, which increases the material cost and affects the rigidity of the material, and the density of the foamed sheet is in the range of 650-750kg / m 3 , the effect of energy saving and weight reduction on products is not obvious

Method used

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  • Polypropylene composition for low foaming and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 100 parts of copolymerized polypropylene;

[0022] Tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester 0.1 part;

[0023] 0.1 parts of tris(2,4-di-tert-butyl)phenyl phosphite;

[0024] 1.0 parts of talcum powder;

[0025] 5.0 parts of glycerol monostearate.

Embodiment 2

[0027] 100 parts of copolymerized polypropylene;

[0028] 0.5 parts of tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester;

[0029] 0.5 parts of tris(2,4-di-tert-butyl)phenylphosphite;

[0030] 2.0 parts of talcum powder;

[0031] 8.0 parts of glycerol monostearate.

Embodiment 3

[0033] 100 parts of homopolypropylene;

[0034] Tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester 1.0 parts;

[0035] 1.0 parts of tris(2,4-di-tert-butyl)phenylphosphite;

[0036] 5.0 parts of talcum powder;

[0037] 10.0 parts of glycerol monostearate.

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Abstract

The invention discloses a polypropylene composition for low foaming and a preparation process thereof. According to the invention, polypropylene is used as a matrix material for the composition, an anti-oxidant system comprises a hindered phenol anti-oxidant and a phosphite anti-oxidant, powdered steatite or calcium carbonate is used as a nucleating agent, and monoglyceride is used as an activator. The polypropylene composition for low foaming prepared in the invention has molecular weight distribution in the range of 3.0 to 12.0, a melt flow rate in the range of 0.1 to 5.0 g / 10 min and melt tensile strength in the range of 10 cN to 20 cN, and has the characteristics of a simple and stable preparation process, good processing properties and the like; extruded low range foamed plate and sheet products of the composition have a density of 300 to 700 kg / m<3>; the process of foaming is stable; the obtained products have the characteristics of a closed pore structure, fine and uniform foamed pores, etc.

Description

Technical field [0001] The present invention involves a low -hair foam composition and its preparation method. This composition is suitable for the manufacturing of low -power polypropylene squeezing foam plates and sheets. The strength and impact performance of foam products can be used for food.Packaging, automobiles, construction and other industries. Background technique [0002] GM has a poor hair permission, and its appropriate foam viscosity and temperature range are narrow.Therefore, in order to improve the foaming performance and processing stability of polypropylene materials, you should choose a highly melt tension and a wide molecular weight distribution of polypropylene materials, and add other stabilizers to adapt to polypropylene hair.The requirement of the bubble.Polypropylene foaming materials determine the differences in its performance by the difference in foaming, which is suitable for different application areas. [0003] China Patent CN1765976 provides a pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/16C08L23/06C08L23/26C08K13/02C08K3/34C08K3/26C08K5/134C08K5/526C08K5/103C08J9/10C08J9/06
Inventor 郭玉文赵丽梅景政红左英飞王德鑫
Owner CHINA PETROLEUM & CHEM CORP
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