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Modified polystyrene board and preparation method thereof

A polystyrene board, modified technology, applied in flat products, other household appliances, applications, etc., can solve the problems of unstable product performance, insufficient bonding, low production efficiency, etc., to improve the bonding effect and uniformity. Good, the effect of reducing water absorption

Active Publication Date: 2014-11-19
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are two ways of batch production and continuous production of thermosetting modified polystyrene boards: the products produced by batch production have higher mechanical strength, low water absorption, good flame retardant effect and excellent thermal insulation performance, but due to this The production method needs to be cured and cut after the mold is issued, the production efficiency is low, and the product performance is unstable
Continuously produced products use resin as a binder to replace the bonding of polystyrene particles to make boards. Although this production method improves production efficiency, the boards produced have water absorption due to insufficient bonding between the particles. High, permeable and other issues

Method used

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  • Modified polystyrene board and preparation method thereof
  • Modified polystyrene board and preparation method thereof
  • Modified polystyrene board and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0026] The invention provides a kind of preparation method of modified polystyrene board, comprising:

[0027] After mixing the pre-expanded polystyrene particles with a coating material and a curing agent, the coating material includes a phenolic resin, a chemical foaming agent, an emulsifier and an inorganic flame retardant;

[0028] Steam is used to blow the flattened mixture, and then press it into a board to obtain a modified polystyrene board.

[0029] The preparation method disclosed in the present invention is a continuous production process. The material is flattened and then blown with steam before pressing, which can improve the bonding effect of polystyrene and increase the compressive strength and pulling strength of the obtained polystyrene board. , reduce its water absorption rate, make the board denser, and improve its thermal conductivity.

[0030] The present invention uses expandable polystyrene particles as raw materials, which are pre-haired at first. Th...

Embodiment 1

[0056] Formula (the following parts are calculated in parts by mass):

[0057]

[0058] According to the above formula, add polystyrene particles, phenolic resin, chemical foaming agent, emulsifier, inorganic flame retardant and curing agent into the spiral mixer, stir and mix at a speed of 800r / min, and put the mixed particles into the flat Flattened in the machine, its thickness is 6cm, and then blown by 0.02MPa steam pressure into the 4cm double crawler chain plate, the temperature of the chain plate is 74°C, after 8 minutes, it is solidified and formed, and the new modified polystyrene is obtained by cutting. plate.

[0059] The modified polystyrene board is tested, and its performance index is as shown in table 1:

[0060] Table 1 Performance index of the polystyrene board prepared in Example 1 of the present invention

[0061]

Embodiment 2

[0063] Formula (the following parts are calculated in parts by mass):

[0064]

[0065] According to the above formula, add polystyrene particles, phenolic resin, chemical foaming agent, emulsifier, inorganic flame retardant and curing agent into the spiral mixer, stir and mix at a speed of 1000r / min, and put the mixed particles into the flat Flattened in the machine, its thickness is 9cm, and then blown by steam with a pressure of 0.05MPa, and then enters a 7cm double track chain plate. The temperature of the chain plate is 82°C. After 5 minutes, it is solidified and formed, and a new type of modified polystyrene is obtained by cutting. plate.

[0066] The modified polystyrene board is tested, and its performance index is as shown in table 2:

[0067] Table 2 The performance index of the polystyrene board prepared in Example 2 of the present invention

[0068]

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Abstract

The invention provides a modified polystyrene board and a preparation method thereof. The method includes following steps: mixing pre-expanded polystyrene granules with a film-coating material and a curing agent and performing a spreading-out process, wherein the film-coating material includes phenolic resin, a chemical foaming agent, an emulsifying agent and an inorganic flame retardant; stirring and blowing the spread mixture through steam; and performing a pressing process to the mixture to form sheet materials for obtaining the modified polystyrene board. The invention also provides a device which is used for continuous production of the modified polystyrene board and the modified polystyrene board which is prepared through the method disclosed in above technical scheme. An experimental result proves that the modified polystyrene board prepared in the invention is higher than products which are prepared through a batch production method or a common continuous production method in compressive strength, pull strength and oxygen index; and the modified polystyrene board prepared in the invention is lower than the products which are prepared through a batch production method or a common continuous production method in heat conductivity coefficient and water absorption.

Description

technical field [0001] The invention relates to the field of chemical building materials, in particular to a modified polystyrene board and a preparation method thereof. Background technique [0002] The full name of polystyrene board is polystyrene foam board, also known as foam board or EPS board. White foam with pore structure can be used for building wall, roof insulation, insulation layer of composite insulation boards; insulation materials for vehicles, ship refrigeration equipment and cold storage; used for decoration and engraving of various models or as a waterproof layer protective layer. [0003] Thermosetting modified polystyrene board has been widely used in the field of external wall insulation due to its excellent flame retardant properties, no melting and no dripping when burning, good thermal insulation effect and simple construction. At present, there are two ways of batch production and continuous production of thermosetting modified polystyrene boards: ...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L61/16C08K13/02C08K3/12C08K3/36C08K5/06C08J9/08C08J7/14B29D7/01
Inventor 邓刚彭绵广乔林吕爱超
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD