Nano-microporous thermal insulation material and preparation method thereof

Abstract

The invention relates to a nano-microporous thermal insulation material, which includes a porous base layer and a heat insulation layer attached to the surface of the base layer. The base layer consists of the following raw materials by weight: 28-36 parts of polymer hollow microspheres, 1-5 parts of paraffin / porous perlite-urea-formaldehyde resin phase change microcapsules, 11-19 parts of nano-alumina hollow spheres, 5-12 parts of nano-silica sol, and 3-7 parts of alumina silicate fiber. The heat insulation layer is composed of the following raw materials by weight: 44-54 parts of silica aerogel, 14-18 parts of modified starch, 4-8 parts of hollow microspheres, 10-16 parts of nano-titanium oxide, 3-5 parts of mullite whisker, and 2-4 parts of a foaming agent. The nano-microporous thermalinsulation material provided by the invention has good heat insulation performance and high strength, does not shrink easily, and can meet the heat insulation requirements of building walls.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a nano-microporous thermal insulation material and a preparation method thereof. Background technique [0002] According to the national energy-saving development outline, the key energy-saving areas are building energy conservation, industrial energy conservation, and transportation energy conservation, and building energy consumption, which consumes a lot of energy, bears the brunt. Therefore, in order to achieve rapid and stable development in the 21st century, the reform of my country's wall materials and building energy conservation have become the basic national policy of our country, and the development of new wall materials that meet the national building energy conservation standards has become the mission of material researchers. [0003] In the prior art, traditional thermal insulation materials such as rock wool felt, inorganic thermal insulation ...

AI Technical Summary

Problems solved by technology

By adding plant fibers into foam concrete, it solves the shortcomings of wall insulation materials such as poor stability, low strength, large shrinkage, and easy water absorption.

However, the added plant fiber has not been modified, which affects the durability and mechanical properties of the insulation material. On the other hand, the interface of the plant fiber premixed into the soil is not tightly connected, and the cohesion is insufficient, which further affects the compressive strength and mechanical properties of the insulation material. Thermal insulation performance

Images