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Expanded graphite/extruded polystyrene composite insulation board

A technology of extruded polystyrene and composite thermal insulation, applied in thermal insulation, building components, fibrous fillers, etc., can solve the problems of toxic and corrosive gas emission, secondary disasters, and large combustion smoke

Inactive Publication Date: 2010-11-24
SHANGHAI BOTAO ENVIRONMENT PROTECTION SCI & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the halogen-containing flame retardant system has occupied the main position, but due to the shortcomings that the halogen-containing flame retardant itself cannot overcome, such as large combustion smoke, toxic and corrosive gases can be released and cause "secondary disasters"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Use 30g silane coupling agent to 200 order expanded graphite 300g, nanoscale Al(OH) 3 150g for surface graft modification, adding the surface-modified inorganic powder into 3kg of polystyrene resin particles, stirring continuously for 60 minutes, extruding and granulating through a twin-screw extruder at 140-160°C. Then use this as raw material, add 75g of nano-talc powder, mix and mix, stir at 180-200°C, then evenly add to the extruder, heat and mix, add foaming agent HCFC-141b at the same time, and then extrude forming.

Embodiment 2

[0021] Use 30g silane coupling agent to 200 order expanded graphite 150g, nano-scale Al(OH) 3 150g for surface graft modification, adding the surface-modified inorganic powder into 3kg of polystyrene resin particles, stirring continuously for 60 minutes, extruding and granulating through a twin-screw extruder at 140-160°C. Then use this as raw material, add 75g of nano-talc powder, mix and mix, stir at 180-200°C, then evenly add to the extruder, heat and mix, add foaming agent HCFC-141b at the same time, and then extrude forming.

Embodiment 3

[0023] Use 30g silane coupling agent to 500 order expanded graphite 150g, nano-scale Al(OH) 3 150g for surface graft modification, adding the surface-modified inorganic powder into 3kg of polystyrene resin particles, stirring continuously for 60 minutes, extruding and granulating through a twin-screw extruder at 140-160°C. Then use this as raw material, add 75g of nano-talc powder, mix and mix, stir at 180-200°C, then evenly add to the extruder, heat and mix, add foaming agent HCFC-141b at the same time, and then extrude forming.

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Abstract

The invention relates to a preparation method of an expanded graphite / extruded polystyrene composite insulation board, which comprises the following steps: carrying out surface grafting for modifying 200-500 mesh expanded graphite and nano level Al(OH)3 by an interfacial agent; adding to polystyrene resin particles and continuously stirring for 30-60 minutes; extruding and granulating by a double screw extruder at 140-160 DEG C; then taking the particles as raw materials, adding nano talcum powder, blending, stirring at 180-200 DEG C and evenly adding into an extruder; heating and mixing and simultaneously adding a foaming agent HCFC-141b; and then extruding and forming to obtain the composite insulation board with good insulation and flame retardant property.

Description

technical field [0001] The invention belongs to the technical fields of organic / inorganic composite materials, macromolecule physics and thermal insulation materials, and relates to a method for making inorganic powder surface graft modification, physical expansion type flame retardant, and extruded polystyrene composite thermal insulation board. Background technique [0002] Today's world is facing the serious reality that energy reserves are gradually decreasing, energy consumption demand is increasing, and prices are rising. With the development of economy and society, higher requirements are put forward for sustainable development. Saving energy and protecting the environment has become the consensus of mankind, and energy conservation and consumption reduction has become one of human practical actions. With the improvement of people's living standards, the living conditions and environment have been improved accordingly, so building energy conservation has been born. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/80C08J9/12C08L25/06C08K9/04C08K3/34C09C1/46C09C1/40C09C3/00B29C44/00
Inventor 丁友江朱征
Owner SHANGHAI BOTAO ENVIRONMENT PROTECTION SCI & TECH
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