Flame retardant and heat preservation slurry

Abstract

Relating to the technical field of functional coatings, the invention aims to provide a flame retardant and heat preservation slurry. The flame retardant and heat preservation slurry is formed by mixing of the following raw materials by weight percentage: 20-40% of nano silica aerogel, 10-30% of nano alumina sol, 30-50% of deionized water, 4-17% of asbestos fiber and 0.3-3% of a dispersing agent. The flame retardant and heat preservation slurry provided by the invention can be used for preparing a coating structure with flame retardant and heat preservation functions. Tests show that the thermal conductivity of the coating can reach 0.15W / m.K and below, while the thermal conductivity of ordinary heat preservation coatings is about 0.3W / m.K; the adhesion can reach over the national standard grade 1; and the coating is non-flammable under high temperature. Therefore, the flame retardant and heat preservation functional coating structure provided by the invention has the characteristics of high thermal insulation and flame retardance. The raw material cost is low, the preparation process is simple, and the coating adhesion is good. The coating structure adopts conventional concrete slab or cement slab as the matrix, and is easy to realize large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of functional coatings, and in particular relates to a flame-retardant thermal insulation slurry. 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 resistant to aging, and is flammable. It ...

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

Images