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Polyurethane foam for preventing electromagnetic radiation

A polyurethane foam, anti-electromagnetic radiation technology, applied in the field of special foam materials, can solve the problems of high cost, poor anti-electromagnetic radiation capability, low electromagnetic shielding efficiency, etc., and achieve the effects of low cost, reduced mixing performance and low price

Inactive Publication Date: 2019-01-29
德清舒华泡沫座椅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems of low electromagnetic shielding efficiency, poor anti-electromagnetic radiation ability and high cost of foamed plastics in the prior art, and provides a low-cost foam plastic that can effectively improve its anti-electromagnetic radiation ability. Anti-electromagnetic radiation polyurethane foam

Method used

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  • Polyurethane foam for preventing electromagnetic radiation

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Effect test

Embodiment 1

[0029] An anti-electromagnetic radiation polyurethane foam, said foam includes the following components in parts by weight: 100 parts of siloxane-modified phthalic anhydride polyester polyol, 80 parts of dimethylene benzene diisocyanate, nano-lead silicon tungstate 10 parts of gel, 25 parts of powdered graphene microflakes with a thickness of 40-80 nanometers and a width of 5-20 microns, 5 parts of carboxymethyl starch, 3 parts of melamine, 5 parts of ammonium polyphosphate, and 1 part of triethylenediamine , 0.5 parts of water, and 0.05 parts of dibutyltin dilaurate.

[0030] The preparation method of described siloxane modified phthalic anhydride polyester polyol is as follows:

[0031] (1) Preparation of silicone-modified polyol: take 100 parts of propylene glycol according to parts by weight, then add 5 parts of tetraethyl orthosilicate to it and stir evenly, then continue to add 0.5 part of glacial acetic acid and water 10 parts, and then stirred and reacted at 40°C for ...

Embodiment 2

[0036]An anti-electromagnetic radiation polyurethane foam, said foam comprises the following components in parts by weight: 100 parts of siloxane-modified phthalic anhydride polyester polyol, 100 parts of 1,4-cyclohexane diisocyanate, nano-tungstic acid 25 parts of lead-silica gel, 35 parts of powdered graphene microflakes with a thickness of 40-80 nanometers and a width of 5-20 microns, 15 parts of carboxymethyl starch, 8 parts of melamine, 10 parts of ammonium polyphosphate, triethylenediamine 3 parts, 3 parts of water, 0.25 parts of dibutyltin dilaurate.

[0037] The preparation method of described siloxane modified phthalic anhydride polyester polyol is as follows:

[0038] (1) Preparation of silicone-modified polyols: take 100 parts of propylene glycol in parts by weight, then add 10 parts of tetraethyl orthosilicate to it and stir evenly, then continue to add 2 parts of glacial acetic acid and water 15 parts, then stirred and reacted at 60°C for 5 hours, and evaporated ...

Embodiment 3

[0043] An anti-electromagnetic radiation polyurethane foam, said foam comprises the following components in parts by weight: 100 parts of siloxane-modified phthalic anhydride polyester polyol, 85 parts of isocyanate, 15 parts of nano-lead tungstate silica gel, thickness 25 parts of powdered graphene microflakes of 40 to 80 nanometers and a width of 5 to 20 microns, 10 parts of carboxymethyl starch, 5 parts of melamine, 8 parts of calcium polyphosphate, 1 part of triethylenediamine, 0.5 parts of water parts, 0.05 parts of dibutyltin dilaurate.

[0044] The preparation method of described siloxane modified phthalic anhydride polyester polyol is as follows:

[0045] (1) Preparation of silicone-modified polyols: take 100 parts of propylene glycol in parts by weight, then add 8 parts of tetraethyl orthosilicate to it and stir evenly, then continue to add 1 part of glacial acetic acid and water 12 parts, and then stirred and reacted at 50°C for 3 hours, and evaporated under reduced...

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Abstract

The invention relates to a special foam material, in particular to a polyurethane foam for preventing electromagnetic radiation. The foam comprises the following components in parts by weight: 100 parts of siloxane modified diethylene glycol phthalic anhydride polymer, 80-100 parts of isocyanate, 10-25 parts of nanometer lead tungstate silica gel, 25-35 parts of powder graphene microsheet, 5-15 parts of carboxymethyl starch, 3-8 parts of melamine, 5-10 parts of ammonium polyphosphate, 1-3 parts of triethylenediamine, 0.5-3 parts of water and 0.05-0.25 part of dibutyltindilaurate. The inventionsolves the problems of low electromagnetic shielding efficiency, poor anti-electromagnetic radiation ability and high cost of foamed plastics in the prior art and has features of (1) good anti-electromagnetic radiation performance; (2) good mechanical properties and machinability; (3) low cost and simple processing method.

Description

technical field [0001] The invention relates to a special foam material, in particular to a polyurethane foam for preventing electromagnetic radiation. Background technique [0002] Polyurethane rigid foam is a high molecular polymerization made of isocyanate and polyether as the main raw materials, mixed by special equipment, and foamed on-site by high-pressure spraying under the action of various additives such as foaming agent, catalyst, and flame retardant. things. [0003] Polyurethane foam has a wide range of applications and has penetrated into almost all sectors of the national economy, especially in furniture, bedding, transportation, refrigeration, construction, heat insulation and other sectors, and has become one of the indispensable materials. It has become one of the most widely used varieties in plastics. Polyurethane soft foam is mainly used in furniture, bedding and other household items, such as sofas and seats, back cushions, mattresses and pillows; poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L3/08C08K13/06C08K9/06C08K3/24C08K3/04C08K5/3492C08K3/32C08G63/695C08G18/46C08G18/73C08G18/75C08G18/76C08J9/00
CPCC08G18/4692C08G18/73C08G18/751C08G18/7642C08G18/7671C08G63/6954C08J9/0028C08J9/0061C08J9/0066C08J9/009C08J2375/06C08J2403/08C08K3/042C08K3/24C08K5/34922C08K9/06C08K13/06C08K2003/323C08K2003/325C08K2201/011
Inventor 卢伟蔡盼盼
Owner 德清舒华泡沫座椅有限公司
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