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Preparation method of XPE foaming agent

A technology of foaming agent and activator, which is applied in the field of preparation of XPE foaming agent, can solve the problems of not smooth and delicate product surface, narrow foaming temperature range, and small operability elasticity, so as to improve the workplace environment, Operability High elasticity, smooth and delicate surface effect

Active Publication Date: 2020-01-17
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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  • Preparation method of XPE foaming agent
  • Preparation method of XPE foaming agent
  • Preparation method of XPE foaming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A preparation method of XPE whipping agent, comprises 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 second A mixture; then the first mixture is ground to a median particle size of 3 to 15 microns with a jet mill;

[0058] S2. Add 100 parts by weight of auxiliary foaming agent and 1 part of zinc stearate into the high mixer and stir for 2 minutes to obtain the second mixture; then use the jet mill to grind the second mixture until the median particle size is 3-3. 15 micron powder;

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

Embodiment 2 to 7

[0073] All adopt following a kind of preparation method of XPE whipping 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 second A mixture; then the first mixture is ground to a median particle size of 3 to 15 microns with a jet mill;

[0075] S2. Add 100 parts by weight of auxiliary foaming agent and 1 part of zinc stearate into the high mixer and stir for 2 minutes to obtain the second mixture; then use the jet mill to grind the second mixture until the median particle size is 3-3. 15 micron powder;

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

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Abstract

The invention discloses a preparation method of XPE foaming agent, which comprises the steps of S1, mixing 100 parts by weight of azodicarbonamide, 1 part by weight of zinc stearate and 1 to 5 parts by weight of foaming activator, and grinding until the median particle size is 3 to 15 microns; S2, mixing 100 parts by weight of the auxiliary foaming agent and 1 part of zinc stearate, and grinding to a powder with a median particle size of 3-15 microns; S3, stirring and mixing 40 parts by weight of gaseous phase silica and 60 parts by weight of auxiliary crosslinking agent for 10 to 20 minutes;S4, respectively taking 100 parts of the finished product obtained in the step S1, 0-20 parts of the finished product obtained in the step S2 and 4-10 parts of the finished product obtained in the step S3 and mixing for 5-10 minutes, then adding 0-10 parts by weight of liquid oil to continue mixing for 5-10 minutes. The XPE foaming agent prepared by the preparation method of the invention has widefoaming temperature range and large operability elasticity; after foaming, the cell fineness is good, and the product surface is smooth and delicate and the foaming rate 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 after high-temperature heating and continuous foaming. Compared with other PE or non-PE materials, XPE material has excellent performance in terms of durability, light resistance, and physical impact resistance. XPE itself has stable chemical properties, is not easy to decompose, is odorless, and has good elasticity. It is the preferred material for making crawling mats, sound insulation layers, heat insulation layers, and car mats. [0003] As early as 1941, DuPont of the United States first proposed to use nitrogen as a blowing agent to prepare LDPE foam. In 1945, Calent Cable Construction Company proposed a me...

Claims

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Application Information

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Patent Type & Authority Applications(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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