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Efficient flame-retardant polyurethane rigid foam with reaction and synergistic effect and preparing method

A synergistic, rigid foam technology, applied in the field of fire-fighting materials, can solve problems such as flammability, easy dripping, and large smoke, and achieve good flame-retardant effect, enhanced flame-retardant performance, and obvious inhibitory effect

Inactive Publication Date: 2019-08-09
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane rigid foam is prone to disadvantages such as flammability, dripping, and large smoke during use. Therefore, many fields are restricted when choosing to use polyurethane rigid foam.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 is not the content of the present invention. It is a preparation method without adding a flame retardant in the prior art. prepared from 2 parts and 2 parts of modified polymeric silicon surfactant. Its preparation method is: first add 1 part of dimethylaminoethoxyethanol and 2 parts of modified polymeric silicon surfactant to 20 parts of polyether polyol and mix; then add 20 parts of polymethylene polyphenylisocyanate Mix, put it into a box of 15cm×15cm×5cm at room temperature (20-25°C) and normal pressure, stir and foam quickly with an electric stirrer, and bake at 80°C after the foaming is stable Dry it in a dry box for 30 minutes, and let it stand at room temperature for 24 hours to obtain the finished polyurethane rigid foam raw material.

Embodiment 2

[0021] A high-efficiency flame-retardant polyurethane rigid foam with reaction and synergy is composed of 20 parts of polyether polyol, 20 parts of polymethylene polyphenylisocyanate, 5 parts of aluminum diethylphosphinate, and 7.5 parts of sodium alginate 1 part, 1 part of dimethylaminoethoxyethanol, and 2 parts of modified polymeric silicon surfactant.

[0022] The preparation method is as follows: first add 5 parts of aluminum diethylphosphinate, 7.5 parts of sodium alginate, 1 part of dimethylaminoethoxyethanol, and 2 parts of modified polymeric silicon surfactant to 20 parts of polyether polyol. Mix in one part; then add 20 parts of polymethylene polyphenyl isocyanate and mix, at room temperature (20-25°C) and under normal pressure, put it into a box of 15cm×15cm×5cm, use an electric stirrer Quickly stir and foam. After the foaming is stable, put it in an 80°C drying oven for 30 minutes, and let it stand at room temperature for 24 hours to obtain the finished polyurethane...

Embodiment 3

[0024] A high-efficiency flame-retardant polyurethane rigid foam with reaction and synergy is composed of 20 parts of polyether polyol, 20 parts of polymethylene polyphenylisocyanate, 5 parts of aluminum diethylphosphinate, and 7.5 parts of sodium alginate 2.5 parts of expandable graphite, 1 part of dimethylaminoethoxyethanol, and 2 parts of modified polymeric silicon surfactant.

[0025] The preparation method is as follows: first add 5 parts of aluminum diethylphosphinate, 7.5 parts of sodium alginate, 1 part of dimethylaminoethoxyethanol, and 2 parts of modified polymeric silicon surfactant to 20 parts of polyether polyol. part; add 2.5 parts of expandable graphite to 20 parts of polymethylene polyphenyl isocyanate, then mix the above raw materials thoroughly, and put 15cm×15cm× In a 5cm box, use an electric stirrer to stir and foam quickly. After the foam is stable, place it in an 80°C drying oven for 30 minutes, and leave it at room temperature for 24 hours to obtain the ...

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PUM

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Abstract

The invention discloses efficient flame-retardant polyurethane rigid foam with a reaction and synergistic effect and a preparing method. The efficient flame-retardant polyurethane rigid foam is prepared from 20 parts of polyether polyol, 20 parts of polymethylene polyphenyl isocyanate, 5 parts of aluminum diethyl phosphinic acid, 7.5 parts of sodium alginate, 5 parts of expansible graphite, 1 partof dimethylamino ethoxyethanol and 2 parts of a modified polymerization silicon surfactant. The preparing method for the efficient flame-retardant polyurethane rigid foam includes the steps that theraw materials are fully mixed, and the mixture is put into a box of 15 cm*15 cm*15 cm under conditions of the room temperature (20 DEG C to 25 DEG C) and normal pressure, is rapidly stirred and foamedthrough an electric stirrer, is placed into a drying box of 80 DEG C and dried for 30 min after foaming is stable, and is subjected to standing for 24 hours at the room temperature, and the polyurethane-rigid-foam raw-material finished product is obtained. By means of the efficient flame-retardant polyurethane rigid foam, the flame-retardant performance of the rigid polyurethane foam can be enhanced, and through experiments of a cone calorimeter, the weight loss ratio, LOI index measurement and the like, it is verified that the flame-retardant effect of the polyurethane rigid foam is good.

Description

technical field [0001] The invention belongs to the technical field of fire-fighting materials, and relates to a material preparation method of flame-retardant polyurethane rigid foam under synergistic action. Background technique [0002] As a polymer material, polyurethane rigid foam is widely used in coal mining, construction, furniture, transportation, shoemaking and leather industries due to its good wear resistance, viscosity, heat preservation and mechanical strength. . Polyurethane rigid foam is prone to disadvantages such as flammability, dripping, and large smoke during use. Therefore, many fields are limited in choosing to use polyurethane rigid foam. In the process of underground coal mine mining, the plasticity of polyurethane is often used to seal holes, and its flammability still exists. Therefore, the selection of flame-retardant polyurethane rigid foam has far-reaching significance for the safe production of coal mines. [0003] The flame retardants of rig...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L5/04C08K5/5313C08K7/24C08G18/48C08J9/30C08G101/00
CPCC08G18/48C08G2101/00C08J9/30C08J2375/08C08J2405/04C08L75/08C08L2201/02C08L2203/14C08L5/04C08K5/5313C08K7/24
Inventor 张伟李德顺李学田邵鸿媚徐文迪崔勇韩兴威李闯孙康波
Owner SHENYANG LIGONG UNIV
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