Foam cement insulation material for exterior wall and preparation method thereof

Abstract

The invention belongs to the technical field of insulation material for building, and particularly relates to a foam cement insulation material for exterior wall and a preparation method thereof. The foam cement insulation material for exterior wall is prepared from raw materials comprising ordinary portland cement, sulphoaluminate cement, fly ash, silica fume, an expansive agent, a coagulating enhancer, a tackifier, a water-reducing agent, a waterproofing agent, a foaming agent, a foam stabilizer, fiber and water. The preparation method comprises the following steps: (1) first conducting dry mixing on ordinary portland cement, sulphoaluminate cement, fly ash, silica fume and the expansive agent, adding coagulating enhancer, tackifier, water-reducing agent, waterproofing agent, foam stabilizer, water and fiber, and stirring to obtain a slurry; and (2) adding the foaming agent in the slurry, and filling the foamed slurry into a mold. The foam cement insulation material for exterior wall has good fire resistance, long service life, good insulation property, light weight, high strength, low water absorption and good crack resistance.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials for buildings, and in particular relates to a foamed cement thermal insulation material for exterior walls and a preparation method thereof. Background technique [0002] Exterior wall insulation is an important link in building energy-saving projects. At present, the lightweight insulation materials used in exterior wall insulation projects are mainly organic insulation materials represented by polystyrene foam. Although organic insulation materials are light in weight and have low thermal conductivity , the thermal insulation effect is good, but the fire resistance is poor, there is a serious fire hazard, and the weather resistance is poor, and the life span is not the same as that of the building. [0003] The hard porous inorganic thermal insulation materials currently on the market are unstable, have uneven pore formation, low porosity, high thermal conductivity and low s...

AI Technical Summary

Problems solved by technology

Existing foamed cement exterior wall insulation materials only use sulphoaluminate cement system or Portland cement system alone when selecting cementitious materials, and mainly use sulphoaluminate quick-drying cement foaming, which has a short service life. Quality loss, wall peeling off, etc.