Thermosetting airgel modified polystyrene board and its preparation method and building wall

Abstract

The invention provides a thermosetting aerogel modified polystyrene board, a preparation method thereof and building wall, relates to the technical field of building materials of polystyrene board. The thermosetting aerogel modified polystyrene board is mainly made of expandable polystyrene, thermosetting resin, curing agent and coating material, wherein the coating material comprises flame retardants with specific ratios and silica aerogel, since the silica aerogel has the characteristics of low thermal conductivity, low density, high porosity, good fire resistance and the like, and the silica aerogel is added into a thermosetting aerogel modified polystyrene board, so that the thermosetting aerogel modified polystyrene board also has a lower thermal conductivity, and can achieve the effect of good heat preservation and heat insulation performance under a thinner thickness, and is light in texture; in the same condition as the heat preservation requirement, the thickness of the traditional thermal insulation material is reduced by 50 percent; the thermosetting aerogel modified polystyrene board presents a thermosetting property, the volume is substantially constant when the fire is burning, the volume is not flowing, the fire is self-extinguishing, the fire resistance is excellent, and the fire-resistant A-grade standard can be met.

Description

Technical field [0001] The invention relates to the technical field of polystyrene board building materials, in particular to a thermosetting aerogel modified polystyrene board, a preparation method thereof and a building wall. Background technique [0002] Polystyrene foam board, abbreviated as polystyrene board, EPS board, is made of expandable polystyrene beads containing volatile liquid foaming agent, which is pre-heated and then heated in a mold to form a white with fine closed-cell structure. foam. Polystyrene board is a kind of thermal insulation material with high compression resistance, low water absorption, moisture resistance, airtightness, light weight, corrosion resistance, aging resistance, and low thermal conductivity. It can be used for building walls, roof insulation, and composite insulation. The thermal insulation layer of the board, or the thermal insulation material for the refrigeration equipment of vehicles, ships and cold storage, etc. [0003] Traditional...

AI Technical Summary

Problems solved by technology

[0003] Traditional polystyrene board is a thermoplastic material, which usually softens and melts when heated, shrinks, melts, and flows after being attacked by fire. During the fire, the heat release is relatively large, accompanied by thick smoke, which not only seriously pollutes the environment, but also causes fire hazards. The spreading speed is fast, the fire area is large, and it is difficult to extinguish

Although the addition of organic flame retardants can improve its flame retardancy, but with the volatilization of organic flame retardants, its flame retardant performance will also decline, and its flame retardant performance can only reach B level after testing.

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