Preparation method of building thermal insulation material

Abstract

The invention provides a preparation method of a building thermal insulation material. The method comprises the following steps: a, adding hydrophobic expanded perlite to polymer emulsion, performingstirring, adding a cementing material, n-pentane and isopentane, and performing heating and stirring to obtain a mixture I; b, mixing blast furnace slag and filler for ball milling for 2-3 h, adding fly ash, desulfurized gypsum, hydrogen peroxide and a foaming agent, and performing stirring to obtain mixed slurry; c, adding expandable resin to the mixed slurry, performing stirring, injecting aluminum hydroxide and a hydrophobic agent, performing heating for a period of time, and performing dehydrating to obtain a mixture II; d, introducing the mixture I and the mixture II into a twin-screw extruder, adding modified environment-friendly glue, glass fiber and a flame retardant, and performing extrusion molding. The prepared thermal insulation material has excellent thermal insulation performance, low thermal conductivity coefficient and excellent sound absorption and noise reduction performance, the technological process of the method is simple, and manufacturing cost is low.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a preparation method of a building thermal insulation material. Background technique [0002] The development of building insulation materials is an important guarantee for the country to develop energy-saving buildings and promote new rural green buildings. However, the development of wall insulation materials is not satisfactory. It has light weight and excellent thermal insulation performance. There are too few biomass lightweight thermal insulation products that can be directly used and assembled on the construction site. The construction site is wet and the construction efficiency is low. situation will continue to exist for a long time. On the other hand, with the rapid reduction of global wood resources and the strengthening of forest resource protection in various countries, the cost of wood processing has greatly increased. Merely relying on impro...

AI Technical Summary

Problems solved by technology

[0003] Traditional building thermal insulation materials, such as EPS board, XPS board, PU rigid foam and other organic thermal insulation materials have poor fire performance; such as rock wool, mineral wool, glass wool, foam concrete, vitrified beads, etc., although burning The performance reaches A-level, but the thermal conductivity is poor, the thermal insulation performance is not good, and it even fails when exposed to water. It is difficult to achieve the ideal thermal insulation and energy-saving effect when used alone