Polystyrene foam plate and manufacturing method thereof

Abstract

The invention relates to a polystyrene cystosepiment with magnesium oxychloride cement covered on the surface of polystyrene foam particles and the making method. The making method comprises the following steps: foaming the polystyrene plastic particles into lightweight foam particles by means of steam; preparing magnesium oxychloride cement; well blending the polystyrene foam particles and the magnesium oxychloride cement, so as to cover the magnesium oxychloride cement on the surface of the foam particles; manufacturing the blended foam particles into the magnesium oxychloride cement polystyrene cystosepiment. Inorganic adhesive layers can be combined on the two surfaces of the magnesium oxychloride cement polystyrene cystosepiment. With substantial characteristics and remarkable progress, the making method has the advantages of simple process, easy operation and ability to reduce energy consumption. The polystyrene cystosepiment has the advantages that the foam particles are covered with magnesium oxychloride cement, thereby enabling flame retarding effect of the foam particles due to the obstructing effect of the magnesium oxychloride cement, and the incombustibility is up to grade A to meet the fire resistance requirements of buildings.

Description

【Technical field】 [0001] The invention relates to a polystyrene foam board and a manufacturing method thereof, in particular to a polystyrene foam board coated with magnesium oxychloride cement on the surface of polystyrene foam particles and a manufacturing method thereof 【Background technique】 [0002] The production of polystyrene foam boards is a well-established technology and is widely used. The polystyrene plastic is first steam-expanded into lightweight foam particles, which are then sucked into the mold frame. The foam particles are bonded into a whole by steam. The foam board produced by this technology has the advantages of light weight and low thermal conductivity, and is used for thermal insulation materials. [0003] However, its use in building fire protection is insufficient. Polystyrene foam is easy to burn. Once it encounters a fire, it can spread through the polystyrene foam board and release a large amount of toxic gas. In order to solve the flammable...

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Problems solved by technology

[0005] The object of the present invention is to provide a kind of polystyrene foam board and its preparation method, because magnesium oxychloride cement is coated around the foam particle in the prepared foam board, is subjected to the barrier effect of magnesium oxychloride cement, plays a role in preventing The purpose of flame delay of foam particles is to achieve non-combustible grade A, so as to meet the requirements of building fire protection, and solve the problems that the foam board produced by the existing technology cannot achieve the purpose of non-combustible grade A, and cannot meet the requirements of building fire protection.

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