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A kind of polystyrene foam material and preparation method thereof

A polystyrene foaming and polystyrene technology, which is applied in the field of preparation of building materials, can solve the problems of cumbersome preparation process, poor application effect, complex composition and the like, and achieves the effects of simple process, low cost and simple equipment.

Active Publication Date: 2021-08-03
北京建筑材料检验研究院股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses specific flame retardant soaked particles after foaming, but this method is very troublesome to operate; because the foamed particles are only more than ten kilograms per cubic meter, due to the low density, they will float in the flame retardant and cannot be completely soaked , the improvement of flame retardant performance is limited
[0005] CN1047448858 discloses a resin composition, a graphite polystyrene board and a preparation method thereof. The composition is relatively complicated, and the preparation process is cumbersome, and the combustion performance level of the graphite polystyrene board is improved due to the addition of a thermosetting resin mixture and a curing agent. , however, the board as a whole is acidic, and the reaction with alkaline mortar will easily cause the board to fall off, and the actual application effect is not good

Method used

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  • A kind of polystyrene foam material and preparation method thereof
  • A kind of polystyrene foam material and preparation method thereof
  • A kind of polystyrene foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The embodiment of the present invention provides a kind of preparation method of polystyrene foam material, and specific process is as follows:

[0043] S1. Weigh each component according to the following formula:

[0044]

[0045]S2. Then put modified polystyrene, magnesium oxide, diethyl ethyl phosphate and fumed silica in a mixing tank, stir for 35 minutes, then add tetrafluoroethane and perfluorohexanone, mix well and place Foaming is carried out in a foaming device at a temperature of 125° C. and a pressure of 0.35 MPa, and then polystyrene foamed materials are produced by molding or extrusion.

[0046] After testing, its vertical combustion rating is UL94-V0, the limiting oxygen index is 34.9%, the bending strength is 0.36MPa, and the density is 0.0142g / cm 3 , the water absorption rate is 1.65%, and the thermal conductivity is 0.0367w / m·k.

Embodiment 2

[0048] The embodiment of the present invention provides a kind of preparation method of polystyrene foam material, and specific process is as follows:

[0049] S1. Weigh each component according to the following formula:

[0050]

[0051] S2. Then put modified polystyrene, magnesium oxide, diethyl ethyl phosphate and fumed silica in a mixing tank, stir for 35 minutes, then add tetrafluoroethane and perfluorohexanone, mix well and place Foaming is carried out in a foaming device at a temperature of 125° C. and a pressure of 0.35 MPa, and then polystyrene foamed materials are produced by molding or extrusion.

[0052] After testing, its vertical combustion rating is UL94-V0, the limiting oxygen index is 28.75%, the bending strength is 0.12MPa, and the density is 0.0448g / cm 3 , the water absorption rate is 1.70%, and the thermal conductivity is 0.0385w / m·k.

Embodiment 3

[0054] The embodiment of the present invention provides a kind of preparation method of polystyrene foam material, and specific process is as follows:

[0055] S1. Weigh each component according to the following formula:

[0056]

[0057] S2, then put modified polystyrene, talcum powder, montmorillonite, trisodium phosphate, bentonite, polypropylene fiber, zinc stearate and aluminum stearate in a mixing tank, stir for 30min, then add cyclopentane , neopentane and perfluorohexanone are added, mixed evenly and placed in a foaming device with a temperature of 120 ° C and a pressure of 0.35 MPa for foaming, and then the polystyrene foam material is produced by molding or extrusion .

[0058] After testing, its vertical combustion rating is UL94-V0, the limiting oxygen index is 40.8%, the bending strength is 0.415MPa, and the density is 0.0122g / cm 3 , the water absorption rate is 1.05%, and the thermal conductivity is 0.0224w / m·k.

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Abstract

The invention discloses a polystyrene foam material and a preparation method thereof, which comprises the following components in parts by weight: 90-105 parts of modified polystyrene, 2-7.5 parts of a reinforcing agent, and 0.5-10 parts of a flame retardant , 0.5-5 parts of foaming agent, 0.1-1 part of stabilizer and 0.5-2 parts of perfluorohexanone. In the present invention, by adding perfluorohexanone and utilizing its easy-to-vaporize characteristics, it can play the role of foaming agent to a certain extent. Perfluorohexanone can also improve the flame retardancy of polystyrene foam materials and reduce the flame retardancy. The added amount of the agent, perfluorohexanone can stay in the closed bubbles of the formed polystyrene foam material, improve its thermal insulation effect, and the synergistic effect is obvious; its preparation method is simple and stable, the raw materials are easy to obtain and cheap, and the cost is low. It has important popularization value; the prepared product has excellent density and mechanical properties and excellent thermal insulation and flame retardant properties, and its overall performance is obviously higher than that of similar products on the market, so it is widely used.

Description

technical field [0001] The invention belongs to the technical field of preparation of building materials, and relates to a polystyrene foam material and a preparation method thereof. Background technique [0002] Polystyrene foam material is a kind of foam plastic developed by German BASF company in the 1950s and was the first to realize industrial production. Due to its excellent performance, low cost, simple and feasible production molding process equipment and the Products with various shapes and different densities have developed rapidly. Even among the three most produced foamed plastics, polystyrene, polyurethane and polyvinyl chloride, it ranks first. [0003] According to statistics, China has become the world's largest producer of polystyrene foamed materials, and its total production and consumption rank first in the world. In 2011, the total production of domestic polystyrene foamed materials has exceeded 4.75 million tons. Accounting for more than 75% of the gl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/06C08L23/12C08K13/02C08K3/36C08K3/22C08K3/34C08K5/098C08K3/32C08K5/07C08K5/521C08J9/14
CPCC08J9/0023C08J9/0038C08J9/0061C08J9/0066C08J9/0085C08J9/141C08J9/143C08J9/149C08J2203/14C08J2203/202C08J2325/06C08J2423/12C08K3/34C08K3/36C08K5/07C08K5/098C08K5/521C08K13/02C08K2003/222C08K2003/2227C08K2201/011C08K2201/014
Inventor 孔祥荣史航何晓燕马国儒张玉涛路瑞娟
Owner 北京建筑材料检验研究院股份有限公司