A kind of calcined desulfurized gypsum composite cementitious material insulation board with heat reflection coating and preparation method thereof

Abstract

The invention relates to a calcined desulfurized gypsum composite cementitious material thermal insulation board with a heat reflective coating and a preparation method thereof. The thermal insulation board comprises the following components: calcined desulfurized gypsum 100, metakaolin 40-70, pozzolan powder 20-70 50, gneiss powder 10‑30, carbide slag 2‑6, Glauber’s salt 1‑5, expanded perlite 150‑300, water repellent 3‑7, dextrin 0.3‑0.8, styrene-butadiene emulsion 4‑7, heat insulation Titanium dioxide 2‑5, titanium iron brown pigment 1‑3, hollow glass microspheres 3‑5, water 80‑140. The preparation method of the invention comprises: molding and maintenance of the base insulation board; preparation of the heat reflection coating; painting of the heat reflection coating; and curing of the heat reflection coating. The invention has good thermal insulation performance and heat reflection performance, is suitable for exterior wall veneer in hot summer and warm winter regions and hot summer and cold winter regions, endows buildings with good energy saving and decorative effects, and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a calcined desulfurized gypsum composite gelling material insulation board with a heat-reflecting coating and a preparation method thereof. Background technique [0002] Building energy conservation is a basic national policy of our country, which is related to the health and comfort of people living in buildings, and also determines the sustainable development of buildings. The energy consumption per unit area of ​​buildings in my country is (2-3) times that of developed countries with similar climatic conditions, and building energy conservation has a long way to go. [0003] Since 2004, my country has implemented external insulation measures for building exterior walls. The insulation materials used in the external wall insulation system have successively expanded polystyrene boards, extruded polystyrene boards, polyurethane boards, phenolic resin boards, rock wool bo...

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Problems solved by technology

These types of thermal insulation materials are either not fire-resistant, non-flammable, or easy to absorb water, or the thermal conductivity is not low enough, so that the energy-saving work of buildings in my country has not achieved good results so far, and due to the application of external wall insulation systems, it has produced The serious consequences of the insulation layer being empty, falling off or even hurting people and things

[0004] Studies have shown that for regions with hot summer and cold winter and regions with hot summer and warm winter, the sunshine time in summer is long, and simple heat preservation is not the best choice

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