Waterborne smokeless and odorless inorganic nano-ceramic fireproof coating and preparation method thereof

Abstract

The invention relates to waterborne smokeless and odorless inorganic nano-ceramic fireproof coating. The waterborne smokeless and odorless inorganic nano-ceramic fireproof coating is characterized inthat raw material components comprise a component A and a component B, wherein the content of the components is as follows in percentage by mass: 60 to 80 percent of the component A and 20 to 40 percent of the component B; the component B is a curing agent; the component A is prepared from the following raw materials in percentage by mass: 25 to 80 percent of waterborne inorganic nano-ceramic emulsion, 1 to 20 percent of a pigment, 1 to 30 percent of filling, 0.1 to 0.5 percent of a wetting dispersant, 0.1 to 0.5 percent of a de-foaming agent, 1 to 5 percent of a thickening agent and the balance of water. The waterborne smokeless and odorless inorganic nano-ceramic fireproof coating provided by the invention is not decomposed at high temperature, has no smoke and no odor, and has fireproofand flame-retarding, high-rigidity wear resistance and ultra-weather-resistance performance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a fireproof coating and a preparation method thereof. Background technique [0002] Paint, traditionally called paint in China, is coated on the surface of an object to be protected or decorated, and can form a continuous film firmly attached to the object to be coated, usually based on resin, or oil, or emulsion, with the addition of or It is a viscous liquid prepared with organic solvents or water without adding pigments or fillers and adding corresponding additives. Coatings are widely used in people's production and life, and fire retardant coatings are one of them. [0003] There are two main types of film formers and binders for the preparation of fire retardant coatings at home and abroad: organic resins and inorganic binders. Organic resins include styrene-acrylic emulsion, pure acrylic emulsion, silicon-acrylic emulsion, tert-acetic emulsion, vinyl acetate emulsion, o...

AI Technical Summary

Problems solved by technology

This kind of fireproof coating with organic resin as film former and binder has certain fireproof performance. At the same time, it has good technical indicators such as water resistance, corrosion resistance, adhesion and decoration, but it has a common defect: due to The main film-forming substances and binders of this kind of fire retardant coatings are organic substances, which are more or less flammable at high temperatures. Once a fire occurs, these organic resins will burn and produce a large amount of toxic gases, which will endanger escape and safety. At the same time, with the burning of film-forming materials, the fire resistance of fire-resistant coatings will be greatly reduced; inorganic binders include: silicates, phosphates, phthalates, aluminates and some special cements, This kind of fireproof coating with inorganic substances as film formers and binders has excellent fire resistance, but its water resistance, adhesion, decoration and other performances are poor, and it is easy to crack at high temperatures, and the paint film will disappear in severe cases. Exist, complete loss of fire protection function

[0007] 3. A large amount of organic flame retardant added will be decomposed at high temperature, which will produce a large amount of smoke and gas with a certain taste. The whole coating cannot be smokeless and tasteless at high temperature;

[0008] 4. Since pure nano-oxides can form a certain film-forming substance by condensation of their own hydroxyl groups, but a large amount of so-called fillers, pigments, flame retardants, expansion powders and thermal insulation materials are added to them, the ratio of all nano-oxides to other substances is the largest Up to: 50:180, the whole so-called paint is completely non-adhesive (adhesive), and cannot form a normal complete coating film at room temperature unless it is melted at high temperature to form a film

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