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Tunnel mineral fireproof paint

A fire-resistant coating and mineral technology, applied in the field of tunnel mineral fire-resistant coatings, tunnel fire-resistant coatings, can solve the problems of thin coatings with low fire ratings, poor decorative properties of fire-resistant coatings, and thick coatings that are easy to fall off. It takes a long time to reach the fire resistance limit, Excellent freeze-thaw resistance and high bonding strength

Inactive Publication Date: 2019-06-18
徐开磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many manufacturers of fireproof coatings for tunnels in my country. Basically, high alumina cement is used as a binder, and lightweight aggregates such as polyvinyl chloride and perchlorethylene are combined to form tunnel fireproof coatings. The typical problem is that this type of tunnel Low bonding strength of fire retardant coating, low fire rating for thin coating, easy to fall off when thick coating, poor decoration of fire retardant coating

Method used

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with specific embodiment:

[0013] Mineral mixtures are activated by alkali to activate the activity of aluminosilicates, and a polymerization reaction occurs. Generally, aqueous solutions of sodium silicate and sodium hydroxide are used to excite aluminosilicates such as metaperlite, fly ash, and slag. However, if the mineral mixture is used in tunnel fireproof coatings, the liquid alkali system will bring a lot of inconvenience to transportation and use. The present invention uses low-melting sodium salts such as alumina, sodium sulfate and high-melting sodium carbonate multi-element eutectic to reduce the melting temperature of sodium carbonate to 600-700°C, and uses high-activity cornstarch to oxidize with alkali metals at high temperatures The reactant reacts to form sodium silicate, calcium silicate, sodium disilicate or calcium disilicate, and at the same time, with the assistance of alkaline be...

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PUM

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Abstract

The invention provides a tunnel mineral fireproof paint, which is composed of the following raw materials by weight: 36-43 parts of a mineral mixture, 11-16 parts of polyvinyl chloride, 18-28 parts ofperchloroethylene, 13-16 parts of brucite fiber, 3-5 parts of chlorinated rubber, 3-5 parts of hydroxymethyl cellulose, and 0.03-0.05 part of a fatty alcohol sulfonate air entraining agent. Specifically, the mineral mixture is composed of the following raw materials by weight: 18 parts of titanium dioxide, 11 parts of perlite, 3 parts of calcium carbonate, 5 parts of calcium oxide, 11 parts of sodium carbonate, 2 parts of alumina, 3 parts of sodium sulfate and 50 parts of asbestos powder. The mineral mixture binder used in the invention has the characteristics of low material source cost, high bonding strength, excellent fire resistance and durability. The tunnel fireproof paint provided by the invention has the characteristics of long fire resistant limit time, high bonding strength andexcellent freeze-thaw resistance, thus being a tunnel fireproof paint with good performance.

Description

technical field [0001] The invention belongs to the field of fireproof coatings, and relates to a tunnel fireproof coating, in particular to a tunnel mineral fireproof coating. Background technique [0002] Tunnel fireproof coating is a special fireproof coating specially designed for tunnel walls and vaults to avoid burning in fire. At present, there are many manufacturers of fireproof coatings for tunnels in my country. Basically, high alumina cement is used as a binder, and lightweight aggregates such as polyvinyl chloride and perchlorethylene are used to form tunnel fireproof coatings. The typical problem is that this type of tunnel The bonding strength of the fireproof coating is low, the coating is thin and the fire rating is low, the coating is thick and easy to fall off, and the decoration of the fireproof coating is poor. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a tunnel miner...

Claims

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Application Information

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IPC IPC(8): C04B26/28C04B111/28
Inventor 徐开磊
Owner 徐开磊
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