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Modified PP-R material

A PP-R, modified technology, used in the field of plastic materials, can solve problems such as harshness, and achieve the effects of accelerated crystallization rate, fine and uniform spherulites, and improved resistance to low temperature brittleness

Active Publication Date: 2012-03-07
爱康企业集团(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous development of society, the harsh construction conditions on site and the continuous improvement of use requirements, relying on the original characteristics of PP-R can no longer meet the current needs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] PP-R content is 97%wt, dicumyl peroxide is 3%wt. The modified PP-R pipe is extruded by blending method.

Embodiment 2

[0012] PP-R content is 95%wt, dicumyl peroxide is 5%wt. All the other are with embodiment 1.

Embodiment 3

[0014] PP-R content is 90%wt, and dicumyl peroxide is 10%wt. All the other are with embodiment 1.

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PUM

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Abstract

The invention provides a modified PP-R material for reducing low-temperature brittleness of PP-R and improving rigidity of PP-R material without influencing the toughness. The modified PP-R material comprises PP-R and dicumyl peroxide and is characterized in that the modified PP-R material contains 90 to 97wt percent of PP-R and 3 to 10wt percent of dicumyl peroxide. In the modified PP-R material, micro-cross-linking technology is utilized to influence the sequence structure of random polymer as well as the sequence structure of homo-polymerization section, so that the isotactic structure of PP main chain is reduced to influence the regularity of the chain and enhance the randomness of the main chain, thus enhancing the rigidity of PP-R and improving the mechanical strength of PP-R. Because the dicumyl peroxide belongs to thermoplastic material, the modified PP-R is recoverable and environment-friendly, and causes no pollution to the environment.

Description

technical field [0001] The present invention generally relates to a plastic material, in particular to a modified PP-R material. Background technique [0002] With the national policy of "replacing steel with plastic" and building an energy-saving society, plastic pipes are widely used in more and more areas, among which PP-R pipes are more widely used. [0003] PP-R pipe has the advantages of corrosion resistance, small friction coefficient, good flexibility, small bending radius, good temperature and pressure resistance, etc., and has been applied in the fields of water supply and heating. However, with the continuous development of society, the harsh construction conditions on site and the continuous improvement of use requirements, relying on the original characteristics of PP-R can no longer meet the current needs. This is mainly manifested in the fact that PP-R pipes show brittleness under low temperature conditions, and because PP-R itself has a certain degree of tou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K5/14
Inventor 郑立克
Owner 爱康企业集团(浙江)有限公司
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