Electromagnetic shielding polystyrene foam

A polystyrene foam, electromagnetic shielding technology, applied in the field of special foam materials, can solve the problems of low electromagnetic shielding efficiency, poor electromagnetic radiation resistance, and high cost, and achieve the effects of good electromagnetic shielding performance, static electricity prevention, and low price.

Inactive Publication Date: 2019-01-25
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

[0005] 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. Electromagnetic shielding polystyrene foam

Method used

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  • Electromagnetic shielding polystyrene foam

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Effect test

Embodiment 1

[0024] An electromagnetic shielding polystyrene foam, the foam includes the following components in parts by weight: 100 parts of polystyrene masterbatch, 10 parts of nano-lead tungstate silica gel, 15 parts of powdered graphene microchips, reduced 5 parts of iron powder, 5 parts of silane-modified carboxymethyl starch, 2 parts of n-pentane, 3 parts of melamine, 1 part of ammonium polyphosphate and 0.25 part of dibutyltin dilaurate, wherein the powdered graphene microsheet The thickness is 50-120 nanometers, and the width is 10-20 microns. The reduced iron powder is primary reduced iron powder, and its particle size range is 100-800 μm.

[0025] The preparation method of the nano-lead tungstate silica gel is as follows: weigh 10 parts of methylphenyldimethoxysilane, 30 parts of methyltrimethoxysilane and n-butyl acetate at room temperature according to parts by weight. Put 80 parts in the reaction kettle, stir evenly, add 0.5 parts of hydrochloric acid with a pH of 1 to it and...

Embodiment 2

[0028] An electromagnetic shielding polystyrene foam, the foam includes the following components in parts by weight: 100 parts of polystyrene masterbatch, 25 parts of nano-lead tungstate silicon gel, 25 parts of powdered graphene microchips, reduced 15 parts of iron powder, 15 parts of silane-modified carboxymethyl starch, 10 parts of n-pentane, 10 parts of melamine, 10 parts of ammonium polyphosphate and 0.85 part of dibutyltin dilaurate, wherein the powdered graphene microsheet The thickness is 50-120 nanometers, and the width is 10-20 microns. The reduced iron powder is primary reduced iron powder, and its particle size range is 100-800 μm.

[0029] The preparation method of the nano-lead tungstate silica gel is as follows: weigh 10 parts of methylphenyldimethoxysilane, 45 parts of methyltrimethoxysilane and n-butyl acetate at room temperature according to parts by weight. 100 parts are placed in the reaction kettle, after stirring evenly, add 3 parts of hydrochloric acid w...

Embodiment 3

[0032]An electromagnetic shielding polystyrene foam, said foam comprises the following components in parts by weight: 100 parts of polystyrene masterbatch, 15 parts of nano-lead tungstate silica gel, 15 parts of powdered graphene microchips, reduced 5 parts of iron powder, 10 parts of silane-modified carboxymethyl starch, 5 parts of n-pentane, 3 parts of melamine, 5 parts of ammonium polyphosphate and 0.45 part of dibutyltin dilaurate, wherein the powdered graphene microsheet The thickness is 50-120 nanometers, and the width is 10-20 microns. The reduced iron powder is primary reduced iron powder, and its particle size range is 100-800 μm.

[0033] The preparation method of the nano-lead tungstate silica gel is as follows: weigh 10 parts of methylphenyldimethoxysilane, 35 parts of methyltrimethoxysilane and n-butyl acetate at room temperature according to parts by weight. 85 parts are placed in the reaction kettle, after stirring evenly, add 2 parts of hydrochloric acid with a...

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Abstract

The invention relates to the field of special foam materials, in particular to electromagnetic shielding polystyrene foam. By means of the electromagnetic shielding polystyrene foam, the problems thatin the prior art that, foam plastic is low in electromagnetic shielding efficiency, poor in anti-electromagnetic radiation capability and high in cost are solved. The foam is prepared from the following components in parts by weight: 100 parts of polystyrene master batch, 10-25 parts of nanometer lead tungstate silica gel, 15-25 parts of powdery graphene nanoplatelets, 5-15 parts of reduced ironpowder, 5-15 parts of silane modified carboxymethyl starch, 2-10 parts of n-pentane, 3-10 parts of melamine, 1-10 parts of ammonium polyphosphate and 0.25-0.85 part of dibutyltin dilaurate. After thecomponents are fully mixed, according to a conventional scheme, a mixture is foamed to obtain the electromagnetic shielding polystyrene foam; the electromagnetic shielding polystyrene foam has the advantages that the electromagnetic shielding performance is good; the raw materials are simple and cheap; the electromagnetic shielding polystyrene foam has the characteristic of preventing charge accumulation, so that static is effectively prevented; a flame retarding effect is excellent.

Description

technical field [0001] The invention relates to a special foam material, in particular to an electromagnetic shielding polystyrene foam. Background technique [0002] Polystyrene foam is made of polystyrene resin as the main body, adding foaming agent and other additives. It is currently the most widely used cushioning material. It has a closed-cell structure, low water absorption and excellent water resistance; low density, generally 0.015-0.03; good mechanical strength, excellent cushioning performance; good processability, easy to mold; good colorability, strong temperature adaptability , Excellent anti-radiation and other advantages, and high dimensional accuracy, uniform structure. [0003] At present, many precision instruments need to be wrapped with foam materials during transportation, so as to effectively avoid the buffering effect of mechanical vibration. However, some precision instruments need to be protected not only from vibration and shock, but also from th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L3/08C08L83/04C08K3/24C08K3/04C08K3/08C08K5/3492C08K3/32C08J9/14
CPCC08J9/0028C08J9/0061C08J9/0066C08J9/141C08J2203/14C08J2325/06C08J2403/08C08J2483/04C08K3/042C08K3/24C08K5/34922C08K2003/0856C08K2003/323C08K2201/011
Inventor 卢伟蔡盼盼
Owner 德清舒华泡沫座椅有限公司
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