Preparation method of coating structure with flame retardant and heat preservation function

Abstract

The invention relates to the technical field of functional coatings and aims to provide a method for preparing a coating structure with a flame-retardant and heat-preserving function. It includes the following steps: spray the flame-retardant thermal insulation slurry on the surface of the substrate by spraying to form a coated substrate; spray n layers in total, each layer of coating has a thickness of 40-50 μm, and n≥1; when spraying, before Dry one layer and then spray the next layer; heat-treat the coated substrate in a high-temperature furnace at 400°C for 30 minutes, and then wash the surface with clean water to obtain a coating structure with flame-retardant and heat-preserving functions; the thermal conductivity of the product of the present invention is The rate can reach 0.15W / m·K and below, and the thermal conductivity of ordinary thermal insulation coating is about 0.3W / m·K; the adhesion can reach the national standard level 1 or above; the coating is non-combustible at high temperature. Therefore, the flame-retardant and heat-retaining functional coating structure of the present invention has high heat-retaining and flame-retardant properties. The cost of raw materials is low, the preparation process is simple, and the adhesion of the coating is good; the coating structure uses conventional concrete slabs or cement slabs as substrates, and is easy to realize large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of functional coatings, in particular to a method for preparing a coating structure with flame-retardant and heat-preserving functions. Background technique [0002] Making full use of and saving energy is a major issue in the sustainable development of human beings, and the use of suitable thermal insulation materials is an effective measure to solve this issue. The current thermal insulation coating is mainly sprayed with polyurethane foam and other polymers. With the rapid development of my country's polyurethane industry in recent years, sprayed polyurethane rigid foam has been identified as the preferred material for building thermal insulation and energy efficiency. And it has received extensive attention in the industrial and architectural fields. However, although polyurethane foam insulation material has excellent thermal insulation performance, its main component is organic matter, which is not res...

AI Technical Summary

Problems solved by technology

However, although polyurethane foam insulation material has excellent thermal insulation performance, its main component is organic matter, which is not resistant to aging, and is flammable. It is easy to cause serious safety problems such as fire when used on a large area of ​​building surface. Therefore, it is necessary to develop a Insulation coating with both thermal insulation performance and flame retardant effect to improve safety performance

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