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Production method of polystyrene insulation board

A production method and polystyrene technology, applied in the field of building materials, can solve the problems of uneven material and poor adhesion of polystyrene particles, and achieve the effect of simple process and improved compressive strength.

Active Publication Date: 2014-06-04
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] An object of the present invention is to provide an improved production method of polystyrene insulation board, to solve the problem of polystyrene particles in the polystyrene board molding process caused by coating the polystyrene pre-haired particles with flame-retardant materials in the prior art. The problem of poor bonding performance between
[0010] Another object of the present invention is to solve the problem that the coating material evenly coats polyphenylene particles
[0011] Another object of the present invention is to solve the problem of uneven material in sheet material wet forming

Method used

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  • Production method of polystyrene insulation board
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  • Production method of polystyrene insulation board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The ordinary grade E-303 expandable polystyrene particles were pre-expanded for 15 minutes under a steam pressure of 0.3 MPa to obtain polystyrene beads with a particle size of 6-8 mm.

[0027] Dry-mix 5 parts by weight of expandable graphite and 2 parts by weight of microencapsulated red phosphorus, and fully mix 2 parts by weight of n-pentane, 3 parts by weight of polyoxyethylene ether, and 5 parts by weight of p-toluenesulfonic acid to obtain a liquid Auxiliary.

[0028] 40 parts by weight of phenolic resin with a viscosity of 1000 will be added to 80 parts by weight of polystyrene beads placed in the mixing bin, and fully mixed so that the resin is evenly coated on the surface of the beads. Pour in the liquid auxiliaries, continue to stir, and mix well. Then pour the above flame retardant dry blend and mix evenly.

[0029] The pellets are poured into a molding machine in a wet state for mechanical compression to reduce the volume compression by 10%, and then molde...

Embodiment 2

[0033] The ordinary grade E-303 expandable polystyrene particles were pre-expanded for 35 minutes under the steam pressure of 0.1 MPa to obtain polystyrene beads with a particle size of 5-7mm.

[0034] 8 parts by weight of aluminum hydroxide powder and 4 parts by weight of MCA were dry mixed evenly. 5 parts by weight of petroleum ether, 1 part by weight of cyclopentane, 8 parts by weight of polyoxyethylene sorbitan monooleate, and 9 parts by weight of hydrochloric acid were fully mixed to prepare a liquid additive.

[0035] Add 90 parts by weight of furan resin with a viscosity of 2000 into the mixing bin containing 90 parts by weight of polystyrene particles, mix well and coat evenly. Pour in the liquid auxiliaries, continue to stir, and mix well. Then pour the above flame retardant dry blend and mix evenly.

[0036] The pellets are poured into a molding machine in a wet state for mechanical compression to reduce the volume compression by 12%, and then molded under a pressure...

Embodiment 3

[0040] The ordinary grade E-303 type expandable polystyrene particles were pre-expanded for 20 minutes under a steam pressure of 0.2 MPa to obtain polystyrene beads with a particle diameter of 4-6 mm, counted as 70 parts by weight.

[0041] 5 parts by weight of decabromodiphenyl ether, 3 parts by weight of zinc borate and 3 parts by weight of microencapsulated red phosphorus are dry-mixed uniformly. 3 parts by weight of dichloromethane, 2 parts by weight of isopentane, 5 parts by weight of castor oil polyoxyethylene ether, and 8 parts by weight of sulfuric acid are fully mixed to prepare a liquid additive.

[0042] Add 50 parts by weight of urea-formaldehyde resin with a viscosity of 800 into the mixing bin containing 70 parts by weight of polystyrene particles, mix well and coat evenly. Pour in the liquid auxiliaries, continue to stir, and mix well. Then pour the above flame retardant dry blend and mix evenly.

[0043] The pellets are poured into a molding machine in a wet ...

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Abstract

The invention provides a production method of a polystyrene insulation board. The production method comprises the following steps: (1) pre-foaming expandable polystyrene particles so as to obtain polystyrene beads; (2) uniformly stirring a foaming agent, a curing agent and a surface active agent so as to prepare a liquid additive; (3) adding thermosetting resin and the liquid additive to the polystyrene beads, and uniformly stirring; (4) adding a flame retardant to the obtained mixture, and uniformly mixing; and (4) transferring the obtained material to a mold, and molding under a steam pressure. The production method provided by the invention is simple in process and is capable of improving the compression strength, pull strength and fireproof performance of the product.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a method for preparing a fire-proof and heat-insulating board. Background technique [0002] Polystyrene foam board is widely used in thermal insulation due to its low water absorption, light weight, high mechanical strength, and low price. At this stage, it has become the most widely used external wall insulation material in the world. [0003] However, general polystyrene foam boards are flammable materials, and they are easy to melt and drip when burned, and produce a large amount of toxic and dense smoke, which brings great hidden dangers to fire safety. At present, the flame retardant methods of polystyrene foam mainly include the following categories: 1. The method of adding flame retardants. This method is simple and direct, but it cannot effectively solve the fire prevention problem. 2. Copolymerize the flame retardant monomer with styrene to obtain polystyrene which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/224C08L25/06
Inventor 邓刚彭绵广乔林吕爱超
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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