Geopolymer tunnel flame retardant paint

A technology of geopolymers and flame retardant coatings, applied in the field of flame retardant coatings, can solve the problems of poor decoration of flame retardant coatings, low flame retardant grades of thin coatings, and easy falling off of thick coatings, and achieves good performance and frost resistance. The effect of excellent melting performance and long fire resistance limit time

CN109896787AInactive Publication Date: 2019-06-18徐开磊
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-06-18
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention provides a geopolymer tunnel flame retardant paint, which comprises the following raw materials by weight: 36-43 parts of a geopolymer, 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 suphonate air entraining agent. Specifically, the geopolymer is composed of the following raw materials by weight: 18 parts of potato starch, 11 parts of kaolin, 3 parts of calcium bentonite, 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 geopolymer binder used by the invention has the characteristics of low material source cost, high bonding strength, and excellent fire resistance and durability. The tunnel flame retardant paint provided by the invention has the characteristics of long fire-resistant limit time, high bonding strength and excellent freeze-thaw resistance, and is a tunnel flame retardant paint with good performance.
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Description

technical field

[0001] The invention belongs to the field of flame-retardant coatings, and relates to a tunnel flame-retardant coating, in particular to a geological polymer tunnel flame-retardant coating. Background technique

[0002] Tunnel flame retardant coating is a special flame retardant coating specially designed for tunnel walls and vaults to avoid burning damage in fire. At present, there are many manufacturers of tunnel flame-retardant coatings in my country, and they basically use high-alumina cement as a binder, polyvinyl chloride, perchlorethylene and other lightweight aggregates to form tunnel flame-retardant coatings. The typical problem is that the Tunnel-like flame-retardant coatings have low bonding strength, thin coatings have low flame-retardant grades, thick coatings are easy to fall off, and flame-retardant coatings have poor decoration. Contents of the invention

[0003] Aiming at the deficiencies in the prior art, the object of the present inventio...

Examples

Embodiment Construction

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

[0013] Geopolymers are activated by alkali to activate the activity of aluminosilicates, and geopolymerization occurs. Generally, aqueous solutions of sodium silicate and sodium hydroxide are used to excite aluminosilicates such as metakaolin, fly ash, and slag. However, if geopolymers are used in tunnel flame retardant 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 bentonite, kaolin...