Thermal insulation glass foam board and preparation method thereof

Abstract

A thermal insulation glass foam board is prepared from waste glass as raw material. A preparation method is as follows: 1) removing impurities in waste glass as raw material, grinding the glass to 400-150 mesh by dry grinding; 2) melting the glass powder at 1400-1000 DEG C, adding a proper amount of metal oxides selected from one or more of cobalt oxide, manganese oxide and copper oxide to change the color of glass and achieve the integration of insulation and decoration; 3) blowing bulbs with diameter of 0.5-15mm and wall thickness of 0.5mm by inert gas (with poor heat conduction) such as argon or neon in the environment of 1300 DEG C, wherein the bulbs naturally bond through glass solidification to form a glass bulb plate in the mold with adjustable thickness; and 4) after formation of the glass bulb plate, annealing the mold in a low temperature annealing zone in order to reduce the brittleness of glass.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a thermal insulation glass bubble board and a preparation method thereof. Background technique [0002] At present, there is a lot of waste glass in daily life, the recycling rate is low, it cannot be processed, and it pollutes the environment. The disadvantage of remelting waste glass is that it is relatively brittle, which is not conducive to the production of new glass products again. [0003] At present, the external wall insulation materials used in the market are mostly benzene board, polyurethane, rock wool, vacuum insulation board and other materials. The benzene board has good thermal insulation performance, but the disadvantage is that it is not environmentally friendly during construction, and it is easy to generate debris during construction, polluting the environment like snow; and it is flammable. For example, the fire in Jing'an District, Shan...

AI Technical Summary

Problems solved by technology

The benzene board has good thermal insulation performance, but the disadvantage is that it is not environmentally friendly during construction, and it is easy to produce broken foam during construction, polluting the environment like snow; and it is flammable. For example, the fire in Jing'an District, Shanghai was caused by the burning of benzene board, and it is currently an obsolete product.

Polyurethane insulation board is expensive and easy to deform, causing cracks on the outer wall and affecting the appearance

It cannot be directly bonded to concrete, but can only be fixed with glue and rivets, and it is easy to fall off in a large area. At present, there are many cases of wall falling off in China. The highest fire protection level reaches Class B, which cannot meet the national fire protection requirements for high-rise buildings.

Although rock wool has a fire protection level of A1, its thermal insulation performance is poor, its thermal conductivity is 0.045w / (m.k), and its service life does not exceed 15 years. It is easy to weather automatically and pollutes the environment. skin and skin itching)

Vacuum insulation has the characteristics of high fire protection level (A1 level), thermal conductivity lower than 0.006w / (m.k), and good insulation effect. However, the vacuum packaging is made of aluminized film, which is easy to break during construction and cause air leakage. , so the usage rate is relatively low