Thermosetting molding polystyrene board and production process thereof

Abstract

The invention discloses a thermosetting molding polystyrene board and a production process thereof. The thermosetting molding polystyrene board comprises the following components: polystyrene particles, cement, glass fibers, fine sand, coarse whiting, fly ash, a flame retardant, an interface agent and water. The production process of the thermosetting molding polystyrene board comprises the following steps of (1) uniformly mixing and stirring polystyrene particles, cement, glass fibers, fine sand, an anti-cracking agent, fly ash, a flame retardant and water to obtain a mixture A, (2) adding aninterface agent into the mixture A, and uniformly mixing and stirring under a heating condition to obtain a mixed solution B, and (3) pouring the mixed solution B into a mold for molding to obtain the thermosetting molding polystyrene board. The cement, the glass fibers, the fine sand, the anti-cracking agent, the coal ash and the flame retardant are added into the polyphenyl particles through stirring under the heating condition, the phenomena that a traditional building external wall panel is inflammable, low in structural strength and prone to falling off are overcome, and the strength andflame retardance of the produced polyphenyl board are remarkably improved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a thermosetting molded polystyrene board and a production process thereof. Background technique [0002] The polystyrene board is used as a protective layer for the waterproof layer. The full name is polystyrene foam board. It is made of expandable polystyrene beads containing a volatile liquid foaming agent, which are heated and formed in a mold after pre-heating White solid with fine closed-cell structure. It is often used in the insulation layer of building walls, roof insulation, and composite insulation panels; sometimes it is also used in insulation materials for vehicles, ship refrigeration equipment, and cold storage. [0003] At present, the existing polystyrene board production process is to infiltrate the inorganic polymer into the interior of the polystyrene board by the infiltration method to increase its thermosetting and fire resistance, and the infiltration meth...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing polystyrene board production process is to infiltrate the inorganic polymer into the interior of the polystyrene board by the infiltration method to increase its thermosetting and fire resistance, and the infiltration method may have uneven infiltration, which makes the produced polystyrene board The water absorption rate of the board is relatively high, and there will be pan-alkaline phenomenon. The high water absorption rate will cause the polystyrene board to be prone to cracking, deformation, shrinkage, and easy breakage in actual use.

As a kind of thermoplastic polymer insulation material, polystyrene board usually softens and melts when heated, the heat release amount of combustion is large, and the amount of smoke is also large. After being exposed to fire, shrinkage and melting will lead to generation of heat in the insulation system. The cavity burns violently in the flashover state, and the burning drips are ignitable, so because the fire resistance of polystyrene board is relatively poor, its large-scale application also brings frequent fires