Fireproof thermal-insulating plate and preparation process thereof

Abstract

A fireproof thermal-insulating plate comprises, by weight, 16-20 parts of closed-cell expanded perlite, 3-5 parts of closed-cell vitrified micro bubbles, 11-14 parts of binder, 2-4 parts of water repellent, 0.4-0.6 part of fiberglass, and 8-12 parts of water. The closed-cell vitrified micro bubbles are 1-5mm in particle size. The closed-cell vitrified micro bubbles are 0.1-1.5mm in particle size. The fiberglass is 6-12mm in length and 5-20 micrometers in diameter. The invention further discloses a preparation process of the fireproof thermal-insulating plate. The fireproof thermal-insulating plate and the preparation process have the advantages that the closed-cell expanded perlite is used as a main setup frame, the closed-cell vitrified micro bubbles are used for assisting in gap filling, a small amount of fiberglass is added to improve tensile strength of the thermal-insulating plate, and accordingly the thermal-insulating plate is proper in volume weight, low in cost and fine in compressive property; the binder and other materials are all made of inorganic minerals and inorganic compounds with fine fireproof performance; and the preparation process is simple.

Description

technical field [0001] The invention relates to a thermal insulation board for building and its preparation process, in particular to a fireproof thermal insulation board used for building exterior walls and its preparation process. Background technique [0002] Thermal insulation is the most important energy-saving measure in building energy conservation. There are many kinds of thermal insulation materials in my country, but most of them are benzene board series, polyurethane foam board and phenolic resin foam board series with polystyrene as the main raw material. These insulation boards belong to Class B fire protection grade, and there are certain fire hazards. Several major fires in China have caused heavy losses due to the flammability of the insulation materials or the poor fire rating. At present, the market share of inorganic insulation boards is less than 10%, and rock wool products with complex construction and toxic ingredients are the leading products. In ad...

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Problems solved by technology

However, this insulation board still has the following problems: (1) the particle size of the expanded vitrified microbeads is small, and the pressed insulation board has a large volume and high cost; (2) the adhesive used is an organic adhesive. Although part of the organic matter is removed during the sintering process, it still affects the fireproof performance of the insulation board; (3) the preparation method is relatively complicated, and nitrogen gas needs to be passed during the preparation process, which increases the production cost and reduces the production efficiency

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