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Expandable granules of polystyrene and prepartion method

A technology of expandable polystyrene and styrene, which is applied in the field of building materials and its preparation, can solve the problems of high energy consumption and low production efficiency, and achieve the effects of reducing pollution, improving production efficiency, and reducing energy consumption

Active Publication Date: 2007-12-26
无锡兴达泡塑新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the cooling time is long, not only the energy consumption is high, but also the production efficiency is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] First example:

[0029] First prepare the raw materials according to the following proportions by weight:

[0030] 90 parts of styrene; 100 parts of desalinated water; 0.0002 parts of sodium sulfonate; 1.2 parts of calcium phosphate; 0.3 parts of benzoyl peroxide; 0.3 parts of dicumyl peroxide; 0.6 parts of hexabromocyclododecane; parts; 0.1 parts of structure regulator. The regulator is linear polyethylene or branched polyethylene.

[0031] Then, pour the desalted water into the reactor, while stirring evenly, add calcium phosphate and sodium sulfonate in sequence, and continue stirring for 5 minutes.

[0032] Afterwards, add half of styrene and half of benzoyl peroxide sequentially, and heat the reactor at a rate of 0.6°C / min. When the temperature reaches 85°C, keep the temperature constant for 100 minutes.

[0033] Thereafter, the remaining half of the styrene, the remaining half of the benzoyl peroxide, dicumyl peroxide, hexabromocyclododecane, and structure regu...

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PUM

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Abstract

This invention discloses a method for preparing environmentally friendly flame-retardant expandable polystyrene granules. The expandable polystyrene granules can be used in colored steel construction plate, base pavement material for highway and heat-insulating material for outer wall. The method comprises: mixing styrene, desalted water, sodium sulfonate, calcium phosphate, benzoyl peroxide, dicumyl peroxide, hexabromocyclododecane, and pentane and structure regulator, stirring, reacting and filtering. The expandable polystyrene granules can reduce air pollution, reduce energy consumption, and increase production efficiency.

Description

technical field [0001] The invention relates to a building material and a preparation method thereof. Specifically, the invention relates to flame-retardant expandable polystyrene particles with environmental performance and a preparation method thereof, which are suitable for building materials such as color steel building material boards, expressway foundation bedding, and external wall insulation materials. Background technique [0002] At present, the production of flame-retardant expandable polystyrene particles mostly uses butane or pentane as a foaming agent, and the content of the foaming agent is as high as 6-8%. During the production process, since the raw material beads need to be heated to 96-108°C, the foaming agent inside the beads will generate pressure after being heated, resulting in the gradual expansion of the volume of the beads, so that the content of the foaming agent in the final product is only 2-100°C. 3%, and the remaining 3-6% of the blowing agent...

Claims

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Application Information

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IPC IPC(8): C08F112/08C08F4/34C08F2/38
Inventor 华若中华啸威许铭杨琪
Owner 无锡兴达泡塑新材料股份有限公司
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