A kind of preparation method of xpe foaming agent

A technology of foaming agent and co-crosslinking agent, which is applied in the field of preparation of XPE foaming agent, can solve the problems of insufficient smooth and delicate product surface, narrow foamable temperature range, and low operability and elasticity, and improve the workplace. environment, improving melt fluidity, preventing gas escape

Active Publication Date: 2022-07-12
浙江杰上杰新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 1. The foamable temperature range is relatively narrow, resulting in less operability and flexibility during use;
[0012] 2. Free foaming, the fineness of the cells after foaming is poor, resulting in the surface of the product not being smooth and delicate;
[0013] 3. Low foaming ratio

Method used

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  • A kind of preparation method of xpe foaming agent
  • A kind of preparation method of xpe foaming agent
  • A kind of preparation method of xpe foaming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A preparation method of XPE foaming agent, comprising the following steps:

[0057] S1, add 100 parts by weight of azodicarbonamide (AC foaming agent), 1 part by weight of zinc stearate, and 1 to 5 parts by weight of foaming activator into a high-speed mixer for 2 minutes, to obtain the first a mixture; then use a jet mill to grind the first mixture to a median particle size of 3 to 15 microns;

[0058] S2, 100 parts by weight of auxiliary foaming agent and 1 part of zinc stearate are added in the high mixer and stirred for 2 minutes to obtain the second mixture; then the second mixture is ground to a median particle size of 3~3 15 micron powder;

[0059] S3, adding 40 parts by weight of fumed silica into the low-speed mixer, then adding 60 parts by weight of the auxiliary crosslinking agent to the low-speed mixer in batches, and waiting for the liquid auxiliary crosslinking agent to be oxidized by the gas phase method After the silicon is absorbed, start the low-spee...

Embodiment 2 to 7

[0073] All adopt the preparation method of following a kind of XPE foaming agent, comprise the following steps:

[0074] S1, add 100 parts by weight of azodicarbonamide (AC foaming agent), 1 part by weight of zinc stearate, and 1 to 5 parts by weight of foaming activator into a high-speed mixer for 2 minutes, to obtain the first a mixture; then use a jet mill to grind the first mixture to a median particle size of 3 to 15 microns;

[0075] S2, 100 parts by weight of auxiliary foaming agent and 1 part of zinc stearate are added to the high mixer and stirred for 2 minutes to obtain the second mixture; then the second mixture is ground to a median particle size of 3~3 15 micron powder;

[0076] S3, adding 40 parts by weight of fumed silica into the low-speed mixer, then adding 60 parts by weight of the auxiliary crosslinking agent to the low-speed mixer in batches, and waiting for the liquid auxiliary crosslinking agent to be oxidized by the gas phase method After the silicon i...

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Abstract

The invention discloses a preparation method of an XPE foaming agent. Grind to a median particle size of 3 to 15 microns; S2, mix 100 parts by weight of auxiliary foaming agent with 1 part of zinc stearate and grind to a powder with a median particle size of 3 to 15 microns; S3, mix 40 parts by weight of fumed silica and 60 parts by weight of co-crosslinking agent are stirred and mixed for 10 to 20 minutes; S4, respectively take 100 parts of the finished product obtained in step S1, 0 to 20 parts of the finished product obtained in step S2, and obtain in step S3 4 to 10 parts of the finished product are mixed for 5 to 10 minutes, and then 0 to 10 parts by weight of liquid oil is added to continue mixing for 5 to 10 minutes. The XPE foaming agent prepared by the preparation method of the present invention has a wide foamable temperature range, high operability and elasticity; fineness of the foamed cells is good, the product surface is smooth and delicate; and the foaming ratio is high.

Description

technical field [0001] The invention relates to the field of foaming agents, in particular to a preparation method of an XPE foaming agent. Background technique [0002] XPE, also known as chemical cross-linked polyethylene foam material, is a plastic product made of low-density polyethylene resin (LDPE) plus peroxide cross-linking agent and chemical foaming agent through high temperature heating and continuous foaming. Compared with other PE or non-PE materials, XPE material has excellent performance in durability, light resistance, physical impact resistance, etc. XPE itself has stable chemical properties, is not easy to decompose, has no odor, and has good elasticity. It is the preferred material for the manufacture of crawling mats, sound insulation layers, thermal insulation layers and car floor mats. [0003] As early as 1941, the American DuPont Company first proposed to use nitrogen as a blowing agent to obtain LDPE foam. In 1945, Calent Cable Construction Company ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/10C08J9/32C08J9/00
CPCC08J9/103C08J9/105C08J9/107C08J9/102C08J9/32C08J9/0095C08J9/0023C08J9/0066C08J2203/04C08J2203/22
Inventor 王晓东罗李华
Owner 浙江杰上杰新材料股份有限公司
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