Flame-retarding lacquer putty and preparation method thereof

Abstract

The invention discloses flame-retarding lacquer putty and a preparation method thereof, and aims to provide air-dried organic silicon-modified unsaturated flame-retarding lacquer putty which has good comprehensive performance, long-term use at the temperature of below 250 DEG C and self-drying property at normal temperature to meet special requirements of subway vehicles and casthouse vehicles, wheel shafts, smoke (steam) passages and the like in other high temperature places. The air-dried organic silicon-modified unsaturated flame-retarding lacquer putty is characterized by being prepared by mixing raw material nano-montmorillonite not containing a halogen element compound, reactive diluent, a heat-resistant unsaturated polyester resin, an organic silicon resin, a special filler, a flame retardant, a low shrinkage additive, a stabilizer, dimethylaniline, a dispersant, titanium dioxide, hollow glass micro-beads, a drier, molybdenum disulfide, talcum powder, ketone peroxide, a curing agent filler, quinacridone bluish red and polyvinylpyrrolidone in a certain proportion, dispersing and grinding the mixture to prepare a main agent and a curing agent, and mixing the main agent with the curing agent. The flame-retarding lacquer putty is mainly used as a bottom coating material for subway vehicles.

Description

technical field [0001] The invention relates to a flame-retardant putty and a preparation method thereof. Background technique [0002] Flame retardant putty usually refers to the primer coating material for metal surface embedding materials, especially a normal temperature drying and air drying type silicone modified unsaturated flame retardant putty. There are generally two types of filling materials for metal surfaces: one is water-based putty, and the other is (natural or synthetic) resin putty. Chinese patent CN86101069 discloses a formula called "cross-linked emulsion baking putty" and its production method. The putty uses water instead of organic solvents. It is non-flammable, non-toxic and harmless, and does not pollute the environment. However, the putty manufactured by this patent must be dried at about 110°C for 50 minutes; such drying conditions greatly limit the use of its putty , due to large-scale equipment and accessories that are inconvenient to move (remo...

AI Technical Summary

Problems solved by technology

Chinese patent 94115901 discloses a formula and production method of "normal temperature quick-drying high-grade polymeric putty". The putty is mainly composed of mixed unsaturated resin, and has the characteristics of putty putty, fast drying, strong adhesion, flexibility and sandability. , good brushing properties, etc., but the resin used in this patent is an unsaturated polyester resin commonly used in putty, and the heat-resistant temperature is usually below 150°C. At the same time, the putty has no flame retardant performance, so the putty The heat resistance and flame retardancy cannot meet the special and strict requirements of subway vehicles and other high-temperature places, such as front cars, axles, smoke (steam) channels, etc.

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