Heat-preserving mortar with low thermal conductivity

Abstract

The invention discloses a heat-preserving mortar with low thermal conductivity, and a production process thereof. The heat-preserving mortar is composed of the following raw materials: 40 to 90% of cement or gypsum, 1 to 20% of aerogel particles, 0 to 4% of cement-modifying agent, 3 to 15% of fiber, 1 to 15% of polymer emulsion powder, 0.5 to 5% of cellulose ether, 0 to 2% of a highly-efficient water-reducing agent, 0 to 1% of an organic silicone hydrophobic agent, 1 to 8% of lignocellulosic polymer emulsion powder and 0 to 40% of other lightweight aggregates; and the mortar is prepared by uniformly mixing the above-mentioned raw materials under complete stirring successively through three stages of stirring process. The heat-preserving mortar provided by the invention uses aerogel as a lightweight aggregate, so thermal conductivity of the mortar is greatly reduced; meanwhile, the adoption of the three-stage stirring process improves mixing uniformity of additives, enables fiber to be completely and uniformly mixed, reduces delivery distance of a fiber mixture and decreases damage of the lightweight aggregates, thereby reducing blockage and improving efficiency.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a low thermal conductivity and thermal insulation mortar. Background technique [0002] Inorganic thermal insulation mortar refers to low-density inorganic particles with thermal insulation performance as lightweight aggregate, using suitable cementitious materials and other multi-component compound admixtures, according to a certain proportion, a building insulation material prepared by a certain process , can be directly applied to the surface of the wall, it has light weight, thermal insulation and other functions compared with ordinary plastering mortar. [0003] In recent years, with the development of my country's building energy-saving business, the field of inorganic thermal insulation mortar has also made great progress, especially light aggregates, which have also developed from traditional expanded perlite to vitrified microbeads with better performance. . ...

AI Technical Summary

Problems solved by technology

[0005] In addition, the conventional production of thermal insulation mortar generally adopts the production process of single mixer batch feeding

The advantage of this production process is less investment, and the disadvantages are poor product stability, low efficiency, and high damage rate of light aggregates.