Thin fire-resistant/flame-retardant paint for tunnel and preparation method thereof

Abstract

The invention relates to thin fire-resistant / flame-retardant paint for a tunnel and a preparation method thereof. The paint is prepared from the following raw materials in percentage by weight: 40-50% of silicate cement, 5-10% of high-alumina cement, 1-5% of fly ash, 1-5% of redispersible rubber powder, 1-5% of aluminum silicate fiber, 5-10% of expanded perlite, 5-10% of vermiculite, 5-10% of hollow glass microsphere, 5-10% of vitrified microsphere, 1-5% of sepiolite, 1-5% of modified aluminum hydroxide flame retardant, 1-5% of modified magnesium hydroxide flame retardant, 1-5% of expandable graphite flame retardant, 0.5-1% of air entraining agent, 0.5-1% of water reducing agent, 0.5-1% of water repelling agent and 0.5-1% of defoaming agent. The paint provided by the invention has excellent bonding strength, high fire resistance, low heat conductivity and remarkable sound absorption and noise reduction effect, further has favorable moisture resistance, water resistance and durability, and effectively reduces the coating thickness, saves the resources and lowers the construction difficulty on the premise of meeting Chinese standards and related specifications.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant coatings, and in particular relates to a thin tunnel fire-resistant and flame-retardant coating and a preparation method thereof. Background technique [0002] With the rapid development of my country's economic construction, the number of expressway and railway tunnels is increasing, especially the number of extra-long tunnels. Improving the fire safety standards of tunnels has become an urgent issue to be solved. For this reason, my country has also issued relevant tunnel fire protection standards. Requirements and specifications to improve the safety factor of tunnels in fire and reduce casualties and property losses. At present, the domestically produced tunnel fireproof coatings are mainly non-intumescent. Although the fireproof performance meets the requirements of the national standard, they are thicker, have greater gravity, are easy to fall off, and have a longer construction time....

AI Technical Summary

Problems solved by technology

At present, the domestically produced tunnel fireproof coatings are mainly non-intumescent. Although the fireproof performance meets the requirements of the national standard, the thickness is relatively thick, the gravity is relatively large, it is easy to fall off, and the construction time is long.

With the passage of tunnel opening time, it is easy to fall off, endangering traffic safety. With the increasing number of tunnels in our country, the internal fire protection requirements of tunnels are getting higher and higher. The current fireproof coatings for tunnels cannot meet the fire safety requirements of modern tunnels.

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