House heat-insulation coating and preparation method thereof

Abstract

The invention relates to a house heat-insulation coating which comprises high-alumina cement, lime, fly ash, water glass and a foaming agent of aluminium powder. The high-alumina cement, lime, fly ash, and water glass with a weight ratio of 0.32-0.45:0.22-0.25:0.35-0.45:0.05 are mixed with 0.54-0.60 wt% of water, and the mixture is stirred in a reaction vessel to prepare viscous pasty fluid. The coating solidifies into solid at normal temperature after application for 10-24 hours. The coating can be coated on a newly-built wall directly without pointing; the coating can be used as a heat-insulation layer with a cement mortar protective layer covered outside, and has a service life being the same as a building; when the coating is used on an old building body, exterior wall coatings need to be polished completely before application of the coating of the invention. The coating has the advantages of no toxicity, no smell, no corrosion, no environment pollution, better heat insulation effect then polystyrene boards, and improved heat insulation performance by 30-50%. The preparation method of the coating can reduce the carbon dioxide discharge capacity. The coating and the preparation method of the invention have quite wide application prospects.

Description

[0001] The invention belongs to the technical field of building energy-saving materials. The invention relates to a house thermal insulation paint used in engineering, more specifically a house thermal insulation paint and a preparation method thereof. Background technique [0002] Industrial and civil buildings built before the 1980s generally do not meet energy-saving requirements. Therefore, energy-saving transformation of old houses has been put on the agenda. Compared with internal insulation, one of the biggest advantages of energy-saving transformation of old houses with external insulation is that there is no need for temporary relocation, and it basically does not affect the indoor activities and normal life of users. More importantly, most of the new building designs adopt frame structures and large windows for daylighting, so that the heat loss of the beams and columns of the frame structure and the heat loss of the large windows must be compensated by the walls, w...

AI Technical Summary

Problems solved by technology

More importantly, most of the new architectural designs adopt frame structures and large windows for daylighting, so that the heat loss of the beams and columns of the frame structure and the heat loss of the large windows must be compensated by the walls, which increases the size of the aerated concrete block. The load of thermal insulation performance, in order to achieve the goal of building energy saving, the designer must not increase the thickness of the wall