Heat-insulation wallboard with low heat transfer coefficient

Abstract

The invention discloses a heat-insulation wallboard with a low heat transfer coefficient, containing the following materials in parts by weight: 80-120 parts of cement, 30-50 parts of prefabricated expanded perlite, 40-60 parts of styrene-acrylic emulsion, 20-40 parts of poly-acrylonitrile base carbon fiber, 30-40 parts of glass fiber, 8-16 parts of gypsum, 15-20 parts of ultra-high molecular weight polyethylene fiber, 5-10 parts of steel fiber, 2-8 parts of kieselguhr, 15-25 parts of esterified starch, 10-20 parts of coal ash, 8-16 parts of talcum powder, 10-20 parts of calcium carbonate, and5-10 parts of mica powder. The prefabricated expanded perlite is prepared by adopting the following process: uniformly mixing gelatin, expanded perlite and hydrogen peroxide solution, filtering, adjusting the system to be neutral, adding ammonium persulfate and sodium hydrogen sulfite under nitrogen protection and stirring, adding acrylamide and stirring, precipitating, and drying, thus obtainingthe prefabricated expanded perlite.

Description

technical field [0001] The invention relates to the technical field of thermal insulation wallboards, in particular to a thermal insulation wallboard with low heat transfer coefficient. Background technique [0002] In recent years, with the rapid development of the country's economic construction, the conservation and utilization of energy and resources has been widely valued. The Ministry of Housing and Urban-Rural Development has proposed energy-saving requirements for residential buildings and public buildings, and various regions have also issued corresponding policies, measures and mandatory implementation standards. , mainly aiming at the energy-saving standards of 50% and 65% for newly-built residential buildings and public buildings respectively. In building energy conservation, wall insulation and energy saving are very important and indispensable. However, the current wall insulation materials have technical problems of low strength and insufficient thermal insula...

AI Technical Summary

Problems solved by technology

In building energy saving, wall insulation and energy saving are very important and indispensable. However, the current wall insulation materials have technical problems of low strength and insufficient heat preservation, which need to be solved urgently.