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Process for preparing environmental protection soft polyurethane foam plastics

A technology of soft polyurethane and foam plastics, applied in the field of fine chemicals, can solve problems such as ozone depletion, achieve safe production process, good product quality, and solve the problem of ozone depletion

Inactive Publication Date: 2005-09-14
张修景
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of environment-friendly soft polyurethane foam production method, this method produces soft polyurethane foam, can solve the problem of ozone depletion, and production process is safe, product quality is good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] The one-step foaming process is adopted: the various components are respectively measured, pumped to the mixer, and fed after being thoroughly mixed. as the picture shows. This one-step foaming process is an existing technology. However, the process conditions and process recipes are different from the existing ones.

[0018] The process conditions of the one-step reaction are:

[0019] Polyol, TDI; temperature 18.4~19.8 / 19.7~20.3℃; stirrer 5000 rpm;

[0020] Drying temperature 19~25℃; milky white period 10~15S; onset time 120~210S;

[0021] Gelation time is 158~260S; demoulding time is 5~6mim; exhaust is very good; sinking 1~5%; inert gas is passed through when mixing materials.

[0022] In the production method of environmentally friendly flexible polyurethane foam, the process formula of the one-step reaction is: parts by weight,

[0023] Modified polyether polyol 100; toluene diisocyanate 45; CaCO 3 10; Silicone 580 1.0; Triethylenediamine 0.15; Water 2.0; Cyclopentane ...

example 2

[0028] The difference from the above is that the process formula is: parts by weight,

[0029] Modified polyether polyol 100; toluene diisocyanate 55; CaCO 3 180; Silicone 580 1.5; Triethylenediamine 0.50; Water 4.80; Cyclopentane 28; Stannous octoate 0.8; Dyestuff 1.0; Flame retardant 3.

example 3

[0031] The difference from the above is that the process formula is: parts by weight,

[0032] Modified polyether polyol 100; toluene diisocyanate 50; CaCO 3 90; Silicone 580 1.2; Triethylenediamine 0.30; Water 3.40; Cyclopentane 20; Stannous octoate 0.4; Dyestuff 0.5; Flame retardant 2.

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PUM

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Abstract

This invention is an environment protection soft quality polyurethane foam plastic generation method; it belongs to precision chemical industry field. It mainly solves the environment protection problem of soft quality polyurethane foam plastic in generation process. Toluene diisocynate and low unsaturated degree polyether glycol do one-step reaction to generate the soft quality polyurethane foam plastic. The feature lies in that foaming agent is cyclopentane, main reactant is modifying polyether glycol and nitrogen gas is added during the generation. The soft quality polyurethane foam plastic generated by this method can solve ozone consumption problem, and the generation process is safe, product quality is good.

Description

Technical field [0001] The invention relates to a production method of environmentally friendly soft polyurethane foam plastic, belonging to the field of fine chemicals. technical background [0002] According to reports, the concentration of ozone in the ozone layer at a height of 25km from the earth’s surface is as high as 0.2mg / dm 3 It is formed when oxygen absorbs ultraviolet rays with a wavelength of less than 185nm from the sun. However, when ultraviolet rays with a wavelength of about 200-300nm irradiate ozone, it will decompose the ozone into oxygen, which consumes 5% of the solar radiation to the earth’s energy. In recent years , The ozone layer in the sky is affected by chlorofluorocarbons, and some parts have low ozone content, and even leaks, causing a large amount of ultraviolet rays from the sun to irradiate the earth, causing millions of people to suffer from skin cancer, and giving birth to 10 trillion hectares of land. Crops bring harm. One of the most volatile s...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08K5/01
Inventor 张修景
Owner 张修景
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