Gypsum lightweight mortar

Abstract

A gypsum light mortar is a heat-insulating material of the inner wall of the building, the gypsum powder is taken as the gelled material which comprises light weight aggregate, polymeric additive and retarder, the light weight aggregate comprises expanded perlite, the polymeric additive is the combination of cellulose ether, lignocellulose, starch ether and polyvinyl alcohol, wherein, the expanded perlite is a silicon-processing modified expanded perlite. The mortar of the invention has the following advantages: the heat conducting coefficient of the mortar of the invention is greatly reduced, and the mortar has excellent heat preserving and insulating property, greatly-increased strength index comparing with the conventional heat-insulating mortar, excellent compression strength, securing the safety using, light weight, effectively reducing the sole weight of the building and the burden of the base load, same construction technique with the conventional coating mortar, simple operation; stable physical property, no hollow injection or cracking after construction, low activity, broad application field, and excellent compatibility and sticking force to various wall bases, the product of the invention in nontoxic, smell-less, inorganic and non-combustible.

Description

technical field [0001] The invention relates to a thermal insulation material for building interior walls, in particular to a gypsum lightweight mortar with good thermal insulation effect. Background technique [0002] Nowadays, a conservation-minded society is advocated, and energy-saving and thermal insulation of buildings is a major trend of construction. The existing cement mortar thermal insulation walls are mainly prone to cracking and falling off, resulting in poor natural thermal insulation performance of the walls. Therefore, gypsum thermal insulation materials have been used to replace cement recently. Mortar insulation material. [0003] Publication No. CN1884767 discloses a gypsum insulation material, which consists of a base layer interface agent, an insulation layer, a glass fiber mesh or a silk mesh layer as a reinforced mesh layer, and a surface layer. Powder, cellulose ether, sodium citrate, etc., although this gypsum insulation material has good crack resi...

AI Technical Summary

Problems solved by technology

The specific performance is: the density of rubber powder polystyrene particle insulation mortar is extremely low, and the thermal conductivity is also greatly reduced, so it has excellent insulation performance, but the compressive strength and bonding strength also decrease significantly, and the construction is difficult.