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Slowly-recoverable foam

A slow rebound and foam technology, applied in the chemical field, can solve the problems affecting the popularization and application of slow rebound foam products, affecting the service life of high rebound foam, and difficult to control the foaming process. Durable effect

Inactive Publication Date: 2015-04-22
甘肃银光聚银化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The toluene diisocyanate used in the existing slow rebound foam contains 80% 2,4, and the activity of the system is high during the reaction, which makes it difficult to control the foaming process, and the foam opening rate is low, which affects the performance of the product
At the same time, due to the special cell structure of the slow rebound foam, its tear strength is low, which affects the service life of the high rebound foam
Moreover, the current slow-rebound foam products have shortcomings such as narrow process operation range and difficult hole opening, and special hole-opening treatment is required for the products, which affects the popularization and application of slow-rebound foam products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, a kind of slow resilience foam is characterized in that: it is formed by foaming from the following raw materials, and each component is by weight part:

[0022] Polyether 5631 60 parts

[0023] Polyether 1030 40 parts

[0024] Cell opener LT-100 3 parts

[0025] Catalyst: 0.5 part of dibutyltin dilaurate, 0.5 part of bis(dimethylaminoethyl) ether, 0.4 part of dibutyltin

[0026] Cross-linking agent: 1.15 parts of diethanolamine

[0027] Foam stabilizer: silicone oil B8002 0.6 parts

[0028] Water: 1.8 parts

[0029] Toluene diisocyanate TDI-70: 40.6 parts

[0030] The foaming method is as follows: After adding the above-mentioned raw materials except toluene diisocyanate into the material barrel in sequence, mix and stir evenly with a mixer, let it stand for 4 minutes, then pour toluene diisocyanate into the material mixing barrel, the material temperature is 23°C, start timing, and quickly After stirring for 6s, pour the mixed material into the foa...

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PUM

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Abstract

The invention relates to slowly-recoverable foam which is characterized by being foamed by the following raw materials in parts by weight: 100 parts of polyether, 0.1-10 parts of a pore-forming agent, 0.2-2 parts of a catalyst, 0.01-3.5 parts of a foam stabilizer, 0.01-4 parts of a crosslinking agent, 30-70 parts of toluene diisocynate and 0.5-7 parts of water. The slowly-recoverable foam can be obtained when content of toluene 2, 4-diisocyanate changes from 50-79%. The cellular diameters of the slowly-recoverable foam are distributed in a mixed manner with a great aperture ratio. The slowly-recoverable foam has a relatively good handfeel and good ventilation, and is low in production cost, low in release of VOC and environment-friendly.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a slow rebound foam. Background technique [0002] Slow rebound foam, also known as memory foam, is a kind of special foam. It is a polyurethane polymer with an open cell structure. The material has special viscoelastic properties and is very soft. characteristics, and has a strong impact energy absorption capacity. The molecules of this material are very sensitive to temperature, so it is also called temperature-sensitive memory cotton. Its main features are: slow rebound speed, low rebound, good energy absorption and shock absorption, and resilience is sensitive to temperature. The external characteristics are as follows: [0003] (1) Unique temperature-sensing characteristics, it will become soft when heated and harden when it is cold. When it comes into contact with human body temperature, the particles on the surface will soften, and the particles softened wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C08J9/08
CPCC08G18/3275C08G18/4804C08G18/6688C08G18/7614C08G2101/00C08G2110/0083
Inventor 徐进梁立新边祥成王德秋赵贵荣
Owner 甘肃银光聚银化工有限公司
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