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Coarse pore die pressing foamed material and preparation method thereof

A foam material and coarse-pore technology, applied in the field of materials, can solve the problems of limited shock absorption effect, easy breakage, and non-wear resistance, and achieve the effect of low specific gravity and bright colors

Inactive Publication Date: 2016-05-04
FUJIAN SANSHENG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shock-absorbing effect of existing foam materials is limited, and they are not wear-resistant, and are easily damaged after repeated use, requiring frequent repairs and replacements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The preparation method of described coarse foam material comprises the following steps:

[0017] 1) Mixing: mix the resin, coarse-cell foaming agent, foaming aid, and crosslinking agent at 100-140°C for 10-20 minutes;

[0018] 2) Opening of refining: the material after banburying is heat-pressed at 80-100°C for 5-10 minutes and then released into tablets;

[0019] 3) Molding and foaming: foam the obtained sheet at 165-185°C for 20-40 minutes under oil pressure, cut the edges and corners, and let it cool down.

[0020] In order to make the content of the present invention easier to understand, the technical solutions of the present invention will be further described below in conjunction with specific embodiments, but the present invention is not limited thereto.

Embodiment 1

[0022] A kind of coarse-cell molded foam material, its preparation method comprises the following steps:

[0023] 1) Mixing: 30 parts by weight of EVA resin, 5 parts by weight of coarse-cell foaming agent (mixing foaming agent HH330 and foaming agent BK at a weight ratio of 1:1), 2 parts by weight of foaming aid, Mix 2 parts by weight of crosslinking agent at 100°C for 20 minutes;

[0024] 2) Opening of refining: the materials after banburying were heat-pressed at 80°C for 10 minutes;

[0025] 3) Molding and foaming: foam the obtained sheet at 165°C for 40 minutes, cut the edges and corners, and let it cool down.

[0026] Material properties: Shore hardness: 40°C, relative density: 0.53, tensile strength / MPa: 0.27, which has a good shock-absorbing and shock-reducing effect, and has wear resistance.

Embodiment 2

[0028] A kind of coarse-cell molded foam material, its preparation method comprises the following steps:

[0029] 1) Mixing: 40 parts by weight of EVA resin, 8 parts by weight of coarse-cell foaming agent (mixing foaming agent HH330 and foaming agent BK at a weight ratio of 1:1), 3 parts by weight of foaming aid, Mix 3 parts by weight of crosslinking agent at 120°C for 15 minutes;

[0030] 2) Opening of refining: the materials after banburying were heat-pressed at 90°C for 8 minutes;

[0031] 3) Molding and foaming: foam the obtained sheet at 170°C for 30 minutes, cut the edges and let it cool.

[0032] Material properties: Shore hardness: 30°C, relative density: 0.52, tensile strength / MPa: 0.25, which has good shock absorption and shock absorption, and has wear resistance.

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Abstract

The invention discloses a coarse pore die pressing foamed material. The coarse pore die pressing foamed material is prepared from, by weight, 30-50 parts of EVA resin or PE resin, 5-10 parts of coarse pore foaming agent, 2-5 parts of foaming promoter and 2-3 parts of cross-linking agent. The coarse pore foaming agent is formed by mixing a foaming agent HH330 and a foaming agent BK according to the weight ratio of 1:1. The coarse pore die pressing foamed material is shaped like a sponge, contains a large number of pores, has a good shock absorption and reduction function, and is resistant to wear and suitable for preparing car liners, protection devices and other products.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a coarse-cell molded foam material and a preparation method thereof. Background technique [0002] As a sandwich structure of various composite materials, foam materials have been used in more and more fields, such as automobile inner linings, seats, helmets, etc., and their main functions are to increase stiffness, reduce weight, and improve product comfort . However, the existing foam materials have limited shock-absorbing effects, are not wear-resistant, are easily damaged after repeated use, and need to be frequently repaired and replaced. Contents of the invention [0003] The object of the present invention is to provide a kind of coarse-cell molded foam material and its preparation method, which is shaped like a sponge, contains a large number of pores, has a good shock absorption and shock absorption effect, and is wear-resistant, and is suitable for prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08J9/04
CPCC08L23/0853C08J9/04C08J2203/18C08J2323/06C08J2323/08C08L23/06C08L2203/14
Inventor 郑孙兴李图文胡志飞谢昌贵
Owner FUJIAN SANSHENG IND