Novel tunnel fireproof paint

Abstract

The invention discloses a novel tunnel fireproof paint, belonging to the technical field of chemical engineering. The fireproof paint is prepared from the following components in parts by weight: 22-30 parts of water glass, 10-15 parts of silicate, 15-20 parts of styrene-acrylic emulsion, 3-5 parts of aluminum silicate fiber, 30-40 parts of magnesium hydroxide, 5-7 parts of tin oxide, 2-4 parts of ammonium borate, 10-12 parts of meerschaum, 25-27 parts of light calcium carbonate, 12-14 parts of expanded perlite, 10-11 parts of melamine, 3-5 parts of pentaerythritol, 3-4 parts of vermiculite, 1-3 parts of ammonium dichromate and 0.8-2 parts of dispersing agent. The tunnel fireproof paint has the advantages of light volume weight, favorable fire resistance, favorable heat insulation property, favorable water/acid/alkali resistance and the like, prevents the steel concrete in the tunnel from temperature drop due to quick temperature rise in a fire hazard, and prevents the concrete from bursting up. The tunnel fireproof paint is suitable for fireproof protection of highway tunnels and railway tunnels.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to a novel tunnel fireproof coating. Background technique [0002] With the rapid development of the national economy, urban construction is accelerating, and the floating population is increasing rapidly, the construction and improvement of transportation is particularly important. The tunnel is favored by planners and builders for its shortest distance to achieve the goal, the least occupied area, the least damage to the natural environment and landscape, and low cost. However, the tunnel structure is generally made of stones and reinforced concrete. When the temperature rises to 600°C, the strength of the concrete will lose more than 50%, and the yield stress of the steel will drop to less than 1 / 3 of the yield force at room temperature. When a fire occurs in a tunnel, the temperature is generally above 1000°C. The masonry of the tunnel cannot withstand such a high tem...

AI Technical Summary

Problems solved by technology

When a fire occurs in a tunnel, the temperature is generally above 1000°C. The masonry of the tunnel cannot withstand such a high temperature, and the serious part is easy to burn down. In addition, the tunnel environment is relatively airtight and the density of people is high. Once a fire occurs, evacuation and fighting are very difficult and easy. Cause heavy casualties and property losses, so it is very important to carry out fire prevention treatment for tunnels