Exterior wall composite insulation heat-proof plastering material

Abstract

The invention relates to compound thermal insulation plastering material for external wall, which consists of a compound cementing material and a lightweight aggregate. The compound cementing material consists of cement, active admixture, lime powder, promoter, surfactant, anti-crack and waterproof agent, water retaining agent, flame retardant, re-dispersible emulsion powder, alkali-resistance fiber and coal flying ash cenosphere; the lightweight aggregate consists of EPS grain and expanded perlite. The invention has the advantages of low density, thermal performance, high strength, good impact resistance, bond strength and low shrinkage. The compound cementing material adopts a plurality of polymeric cementing materials, allows the insulation material to have good bond performance and simultaneously ensures falling and slipping resistance performance. The invention has good water resistance and high softening coefficient. By using cement-based cementing material as main material and organic reinforced material and waterproof component as auxiliary materials, the invention has a hydrophobic rate more than 98 percent and a softening coefficient more than 0.7. The invention can save energy and protect environment. A great deal of industrial waste residue is used in the materials, which can save a great number of energy, realize resource utilization of the waste residue and is in favor of environmental protection.

Description

technical field [0001] The invention belongs to building material technology, in particular to a composite thermal insulation plastering material for exterior walls. Background technique [0002] Building energy consumption generally accounts for 25-40% of the total energy consumption of the whole society. After the energy crisis triggered by the oil crisis in the 1970s, the energy conservation work has been highly valued by the developed countries in the world, and building energy conservation is generally listed as a national policy. Many countries have adopted a development strategy of "grasping with two hands". On the one hand, they have taken measures to control the energy consumption level of new buildings, and on the other hand, they have increased the energy-saving renovation of existing buildings, and achieved very outstanding results. Exterior wall insulation technology is generally considered to be the development direction of energy-saving building insulation wal...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used external wall insulation materials include polystyrene foam board (EPS and XPS), rock (mineral) wool board, glass wool felt, polystyrene particle insulation slurry, sepiolite fiber insulation slurry, cement perlite , polyurethane foam materials, etc., the use of EPS or XPS boards as external insulation technology is relatively mature, but the requirements for the treatment of the wall surface are relatively high, the treatment of special-shaped wall structures is difficult, and the joints are easy to crack; polyurethane foam Materials are easy to construct, waterproof, and have good thermal insulation effects, but they are expensive and flammable, which also limits their use; materials such as perlite, sepiolite, and rock wool are cheap, but poor in stability, and have a good thermal insulation effect after moisture absorption. Difference