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Flame-retardant extruded polystyrene foam board

A technology of polystyrene and foam board, applied in the field of foam board, can solve the problem of low thermal conductivity, achieve the effect of simple components, improve toughness and heat resistance

Inactive Publication Date: 2018-01-19
江阴汉姆应用界面有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing traditional polystyrene insulation materials adopt extrusion molding process, use talcum powder as nucleating agent, add flame retardant, the thermal conductivity of the above-mentioned insulation materials is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] For the flame-retardant polystyrene extruded foam board of Example 1, the raw material composition includes 100 parts of polystyrene, 4 parts of expandable graphite, 6 parts of organophosphorus flame retardant, phosphorus-containing flame-retardant bismaline 5 parts of imide resin, 12 parts of foaming agent, and the particle size of expandable graphite is 200 mesh.

[0015] The organophosphorus flame retardant is ammonium polyphosphate. The blowing agent is tetrafluoroethane.

Embodiment 2

[0017] The difference between Example 2 and Example 1 is that the raw material composition of the flame-retardant polystyrene extruded foam board includes 100 parts by weight of polystyrene, 12 parts of expandable graphite, 2 parts of organophosphorus flame retardant, containing 10 parts of phosphorus flame-retardant bismaleimide resin, 6 parts of foaming agent, and the particle size of expandable graphite is 800 mesh.

[0018] The organophosphorus flame retardant is a mixture of phosphorus-containing intumescent flame retardant PNP and coated red phosphorus, and the percentage of the phosphorus-containing intumescent flame retardant PNP in the organophosphorus flame retardant is 70%.

[0019] The foaming agent is formed by mixing tetrafluoroethane and cyclopentane, and the weight percentage of tetrafluoroethane in the foaming agent is 30%.

[0020] The flame-retardant polystyrene extruded foam board also contains low-molecular-weight polystyrene, and the weight ratio of low-m...

Embodiment 3

[0022] The difference between Example 3 and Example 1 is that the raw material composition of the flame-retardant polystyrene extruded foam board includes 100 parts by weight of polystyrene, 8 parts of expandable graphite, 4 parts of organophosphorus flame retardant, containing 7 parts of phosphorus flame-retardant bismaleimide resin, 9 parts of foaming agent, and the particle size of expandable graphite is 500 mesh.

[0023] The organophosphorus flame retardant is a mixture of phosphorus-containing intumescent flame retardant PNP and coated red phosphorus, and the percentage of the phosphorus-containing intumescent flame retardant PNP in the organophosphorus flame retardant is 85%.

[0024] The foaming agent is formed by mixing tetrafluoroethane and cyclopentane, and the weight percentage of tetrafluoroethane in the foaming agent is 50%.

[0025] The raw material of the flame-retardant polystyrene extruded foam board also contains low molecular weight polystyrene, and the wei...

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PUM

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Abstract

The invention discloses a flame-retardant extruded polystyrene foam board comprising the raw materials in parts by weight: 100 parts of polystyrene, 4-12 parts of expansible graphite, 2-6 parts of organic phosphorus flame retardant, 5-10 parts of phosphorus-containing flame-retardant bismaleimide resin and 6-12 parts of foaming agent; and the particle size of the expansible graphite is 200-800mu.The flame-retardant extruded polystyrene foam board disclosed by the invention is simple in component; and due to the introduction of the phosphorus-containing flame-retardant bismaleimide resin and the organic phosphorus flame retardant, the use amount of a flame retardant containing chlorine and bromine is reduced, and the toughness and heat resistance of the foam board can also be improved.

Description

technical field [0001] The invention relates to the technical field of foam boards, in particular to a flame-retardant polystyrene extruded foam board. Background technique [0002] Insulation materials can be divided into two categories: inorganic insulation materials and organic insulation materials according to their raw material composition. Inorganic thermal insulation materials have high thermal conductivity, large capacity, and difficult construction, so they are seldom used. Organic thermal insulation materials have low thermal conductivity, small bulk density, easy construction, and large-scale automatic production, so they have a wide range of applications. Polystyrene is a common organic thermal insulation material with good thermal insulation effect. Existing traditional polystyrene insulation materials adopt extrusion molding process, use talcum powder as a nucleating agent, and add flame retardants. The thermal conductivity of the above-mentioned thermal insu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L79/08C08K7/24C08K3/32C08K13/06C08K9/10C08K3/02C08K5/32C08J9/14
Inventor 黄平
Owner 江阴汉姆应用界面有限公司