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Preparation method of expansion graphite polystyrene board

A technology of expanded graphite and polystyrene board, which is applied in the field of preparation of expanded graphite polystyrene board, to achieve the effects of good flame retardancy, good flame retardancy and fire resistance, and good thermal insulation

Inactive Publication Date: 2012-06-13
王琼文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the improvement of people's living standards and the vigorous development of the construction industry, the demand for high-performance thermal insulation materials for existing housing and new housing has also increased. Pure organic polymer materials and inorganic materials have been unable to meet market demand.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] A preparation method of expanded graphite polystyrene board, surface modification of expanded graphite powder and nano-scale magnesium hydroxide with surfactant, and then the inorganic powder after the above treatment is mixed with polystyrene resin monomer particles, at 110 ~ Stir evenly at a temperature of 135°C, extrude the produced granules with a twin-screw extruder, mix the produced granules with nano-talc powder and foaming agent ethanol at a temperature of 80-110°C and add them to the extruder Internal extrusion.

[0019] The size of the expanded graphite powder is 200-500 meshes, the amount used is 5-10% of the weight of the polystyrene resin, and the amount of nano-scale magnesium hydroxide is 4-9% of the weight of the polystyrene resin.

[0020] The surfactant is an amphoteric surfactant, and the dosage is 0.4-0.8% of the weight of the polystyrene resin.

[0021] Then mixing the treated inorganic powder with the polystyrene resin monomer particles refers to:...

Embodiment 1

[0032] Carry out surface modification to 200 order expanded graphite 208g, nanoscale magnesium hydroxide 188g with 16 grams of amphoteric surfactants, join the inorganic powder that surface modification is good in 2.5kg polystyrene resin monomer particle and continue to stir for 25 minutes, Granules produced by extruding through a twin-screw extruder at a temperature of 110-135°C. Then use this as raw material, add 53g of nanometer talc powder, through mixing, stir at 80-110°C and evenly add it into the extruder, add 50g of foaming agent ethanol while heating and mixing, and then extrude Out of shape.

Embodiment 2

[0034] Carry out surface modification to 200 order expanded graphite 100g, nano-scale magnesium hydroxide 188g with 16 grams of amphoteric surfactants, join the good inorganic powder of surface modification in 2.5kg polystyrene resin particles and continue to stir for 25 minutes, at temperature Granules extruded by a twin-screw extruder at 110-135°C. Then use this as raw material, add 63g of nano-talc powder, through mixing, stir at 80-110°C and then evenly add it into the extruder, add 40g of foaming agent ethanol while heating and mixing, and then extrude Out of shape.

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Abstract

The invention provides a preparation method of an expansion graphite polystyrene board, belonging to the technical field of preparation methods of expansion graphite polystyrene boards. An organic-inorganic composite insulation board is prepared by using the thermal insulation, heat resistance and flame retardance of an inorganic material, so that the thermal insulation and halogen-free flame retardance of a polystyrene insulation board are enhanced. According to an adopted technical scheme, the method comprises the following steps of: performing surface modification on expansion graphite powder of 200-500 meshes and nano-scale magnesium hydrate with a surfactant; mixing with polystyrene resin monomer particles; uniformly stirring at the temperature of 110-135 DEG C for 25-45 minutes; extruding prepared particles with a double screw extruder; mixing the prepared particles with nano-talc powder and ethanol serving as a foaming agent; and stirring uniformly at the temperature of 80-110 DEG C, and adding into a plastic extruder for extruding and molding to obtain a composite material with high thermal insulation, heat preserving property and flame retardance.

Description

technical field [0001] The invention discloses a method for preparing expanded graphite polystyrene boards, belonging to the technical field of manufacturing methods for expanded graphite polystyrene boards. Background technique [0002] With the development of economy and society, higher requirements are put forward for sustainable development. Energy conservation and environmental protection have 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 and the vigorous development of the construction industry, the demand for high-performance thermal insulation materials for existing housing and new housing has also increased. Pure organic polymer materials and inorganic materials have been unable to meet market demand. The organic and inorganic materials are combined to complement each other, so as to form a flame-retardant composite thermal insulation ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08K13/06C08K9/00C08K7/24C08K3/22C08K3/34C08J9/14B29C47/00
Inventor 丰开庆
Owner 王琼文
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