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Flame retardant expanded polystyrene particle and preparation method thereof

An expanded polystyrene and flame retardant technology, applied in the field of polystyrene particles and their preparation, can solve the problems of uneven flame retardant expanded polystyrene particles, poor fire resistance and the like, and achieve high fire resistance, The effect of increasing the force

Active Publication Date: 2011-05-25
常州诚达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tests have shown that since the flame retardant is in powder form, it is very uneven in the final flame-retardant expanded polystyrene particles, resulting in the production of flame-retardant expanded polystyrene particles with a combustion level of only 100%. It can reach the flammable category (B2 level), and the fire performance is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First select 100 parts of styrene, 100 parts of desalted water, 1.3 parts of calcium phosphate, 0.4 parts of benzoyl peroxide, 0.5 parts of dicumyl peroxide, 1.0 parts of hexabromocyclododecane, 0.2 parts Parts of structure regulator, 0.5 parts of infrared reflector and 55 parts of foaming agent. Wherein: the structure regulator is linear polyethylene or branched polyethylene; the infrared reflector is a nano-scale carbon compound with a layered structure, such as graphite; the foaming agent is butane.

[0029] Then, put one-third of the styrene into the container and stir. While stirring continuously, add benzoyl peroxide, a structure regulator, 30% by weight of hexabromocyclododecane and an infrared reflector, and continue stirring for 20 minutes to obtain a mixed material.

[0030] Afterwards, pour the desalted water into a reaction kettle, and while stirring evenly, add calcium phosphate, the remaining styrene and the above-mentioned mixed material in sequence.

...

Embodiment 2

[0036] First select 90 parts of styrene, 115 parts of desalted water, 1.2 parts of calcium phosphate, 0.3 parts of benzoyl peroxide, 0.4 parts of dicumyl peroxide, 0.8 parts of hexabromocyclododecane, 0.1 Parts of structure regulator, 0.2 parts of infrared reflector and 50 parts of foaming agent. Wherein: the structure regulator is linear polyethylene or branched polyethylene; the infrared reflector is a nano-scale carbon compound with a layered structure, such as graphite; the foaming agent is pentane.

[0037] Then, put one-third of the styrene into the container and stir. While stirring continuously, add benzoyl peroxide, structure regulator, 30% by weight of hexabromocyclododecane and infrared reflector, and continue stirring for 35 minutes to obtain a mixed material.

[0038] Afterwards, pour the desalted water into a reaction kettle, and while stirring evenly, add calcium phosphate, the remaining styrene and the above-mentioned mixed material in sequence.

[0039] Afte...

Embodiment 3

[0044] First select 110 parts of styrene, 130 parts of desalted water, 1.5 parts of calcium phosphate, 0.5 parts of benzoyl peroxide, 0.6 parts of dicumyl peroxide, 1.2 parts of hexabromocyclododecane, 0.3 parts Parts of structure regulator, 0.6 parts of infrared reflector and 60 parts of foaming agent. Wherein: the structure regulator is linear polyethylene or branched polyethylene; the infrared reflector is a nano-scale carbon compound with a layered structure, such as graphite; Alkanes = 1:1 weight ratio mixed.

[0045] Then, put one-third of the styrene into the container and stir. While stirring continuously, add benzoyl peroxide, structure regulator, 30% by weight of hexabromocyclododecane and infrared reflector, and continue stirring for 50 minutes to obtain a mixed material.

[0046] Afterwards, pour the desalted water into a reaction kettle, and while stirring evenly, add calcium phosphate, the remaining styrene and the above-mentioned mixed material in sequence.

...

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PUM

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Abstract

The invention relates to a flame retardant expanded polystyrene particle and a preparation method thereof. The flame retardant expanded polystyrene particle of the invention uses styrene, desalted water, calcium phosphate, benzoyl peroxide, dicumyl peroxide, hexabromocyclododecane, structural modifier, infrared reflection agent, foaming agent and the like as raw materials. The preparation method comprises the following steps: mixing the raw materials, heating to react, and performing filtration and other steps. The flame retardant expanded polystyrene particle has higher burning class and good fireproof performance. The flame retardant expanded polystyrene particle is suitable for the external wall thermal insulations of all kinds of buildings.

Description

technical field [0001] The invention relates to a polystyrene particle and a preparation method thereof. Specifically, it relates to expanded polystyrene particles with flame-retardant properties for thermal insulation of building exterior walls and a preparation method thereof. Background technique [0002] It is well known in the field of construction that flame-retardant expanded polystyrene particles have been widely used as insulation materials for building exterior walls. Internationally, the main indicators to measure the quality characteristics of flame-retardant expanded polystyrene particles are combustion grade and thermal conductivity. The combustion grades mainly include non-combustible (A grade), flame retardant (B1 grade), combustible (B2 grade) and flammable (B3 grade). A high combustion rating means that it has good fire resistance, and a low thermal conductivity coefficient means that it has good thermal insulation performance. The low combustion level m...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08K13/02C08K5/02C08K3/04C08J9/14C08F112/08
Inventor 许铭杨琪
Owner 常州诚达新材料科技有限公司
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