Preparation method of flame-retardant thermal-insulation material

Abstract

The invention discloses a preparation method of a flame-retardant thermal-insulation material. The preparation method comprises the following steps: uniformly mixing all materials by proportion to obtain a mixture; adding the mixture into a reaction kettle for mixing, then adopting a double-screw extruder for extrusion and granulation to obtain modified granules, and grinding into fine powder; and uniformly mixing phenolic resin and the fine powder, putting into a stirring machine for stirring, then heating and foaming to obtain the flame-retardant thermal-insulation material. The flame-retardant thermal-insulation material prepared by the preparation method is environment-friendly and wear-resistant, is applicable to a temperature range between low temperature and high temperature, has good thermal-insulation property with the service life as long as 10 years, and is high in insulating property, good in chemical-corrosion resistance and waterproof.

Description

technical field [0001] The invention relates to a preparation method of a flame-retardant thermal insulation material. technical background [0002] Building thermal insulation is an important aspect of saving energy, improving the living environment and using functions. Building energy consumption generally accounts for 30-40% of the total energy consumption of human beings, most of which are heating and air-conditioning energy consumption, so building energy conservation is of great significance. Therefore, the Ministry of Construction of the People's Republic of China No. "Management Regulations", which stipulates that in the planning, design, construction and use of urban construction in our country, building energy conservation standards must be implemented, and building structures must be treated with thermal insulation engineering. In order to save energy consumption, thermal insulation materials are usually applied on the surface of thermal equipment to reduce ene...

AI Technical Summary

Problems solved by technology

In general, inorganic thermal insulation materials, such as rock wool, mineral wool, glass wool, foam concrete, vitrified microbeads, etc., although the combustion performance reaches Class A, but the thermal conductivity is poor, the thermal insulation performance is not good, and even fails when exposed to water. It is difficult to achieve the ideal heat insulation and energy saving effect when used alone

This greatly limits the scope of application of traditional building thermal insulation materials in construction engineering.

At present, the organic insulation materials used on a large scale in my country's building energy conservation mainly include EPS (polystyrene foam), PS (extruded polystyrene foam) and PU (polyurethane foam), all of which are flammable organic insulation materials. The advantages are light weight, heat preservation, and good heat insulation; the biggest defect is poor fire safety, easy aging, and easy combustion

If these new building energy-saving materials have not been modified by the chemical structure of flame retardant and smoke reduction, if they are simply added with flame retardants, there will be serious fire hazards, leading to frequent building fire accidents, CCTV fires sounded the alarm to the whole country, Therefore, the research and large-scale popularization and application of fire-proof flame-retardant technology and fire-proof structure of flammable organic thermal insulation materials have become important issues related to people's livelihood and safety in our country.