Foam glass and production method thereof

Abstract

The invention relates to the field of industrial production, in particular to foam glass which has the advantages that the strength of the foam glass is improved and meanwhile the heat conductivity factor of the foam glass is reduced. The foam glass comprises the following components in parts by weight: 90-95 parts of glass, 1-5 parts of silicon micro-powder, 1-3 parts of foaming agent, 1-2 parts of modification additive and 0.5-3 parts of foaming accelerator. The production method of the foam glass comprises the following steps of: mixing and crushing 90-95 parts of glass, 1-5 parts of silicon micro-powder, 1-3 parts of foaming agent, 1-2 parts of modification additive and 0.5-3 parts of foaming accelerator to form mixture powder; melting the mixture powder into mixture liquid at the melting temperature of 700-850 DEG C; then uniformly foaming the mixture liquid at the temperature of 650-720 DEG C and keeping the uniform foaming for 30-50 minutes; starting to anneal when cooling to 500-550 DEG C after the uniform foaming is finished; and annealing for 37-38 hours to normal temperature for shaping.

Description

technical field [0001] The invention relates to the field of industrial production, in particular to a foam glass and a production method thereof. Background technique [0002] Foam glass is a new type of superior heat insulation (cold preservation), sound absorption, moisture-proof, fire-proof, high-strength lightweight building materials and decorative materials, also known as porous glass. Its interior is full of numerous open or closed small pores, the area of ​​the pores accounts for 80% to 90% of the total volume, and the pore size is 0.5 to 1.5mm, and some are as small as a few microns. The main raw material of foam glass is usually glass, and acidic volcanic lava materials such as volcanic ash, pumice, perlite, obsidian, blast furnace slag, etc. can also be used. It has no moisture absorption, no water absorption, and will not reduce the effect of heat insulation and cold preservation due to long-term use; it has good heat insulation performance, does not burn, and ...

AI Technical Summary

Problems solved by technology

[0004] With the continuous expansion of the application range of foam glass, the requirements of the actual application environment are gradually increasing. The problem of the foam glass produced by the existing technology is that the content of ordinary glass in the existing foam glass is too high, because the ordinary glass SiO 2 The content is relatively small, and the rest of the impurity components are relatively high. The overall performance of the finished product is affected by too many impurities. For example, at 450 degrees and above, the strength of the foam glass made due to the high content of impurity components Not high enough, high temperature overheating is easy to burst, or in the environment of minus 150 degrees or below, the thermal conductivity of foam glass made of too many impurities is not low enough, and the thermal insulation performance is poor

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