Insulation board for external wall of building

Abstract

The invention discloses an insulation board for an external wall of a building. The insulation board is prepared by mixing a binding material, insulating lightweight aggregate and a modified additive according to a weight ratio of (30-50):(40-55):11, wherein the binding material is prepared from the following components in parts by weight: 5-10 parts of cement, 8-16 parts of coal ash, 15-28 parts of calcined desulfurization gypsum, 2-8 parts of lime powder, 2-9 parts of superfine slag powder and 1-8 parts of high-strength gypsum. The insulating lightweight aggregate is prepared from the following components in parts by weight: 30-56 parts of glass beads and 2-8 parts of rice hull powder or straw powder. The modified additive is prepared from the following components in parts by weight: 16 parts of a tripolycyanamide resin water reducer, 4 parts of an air entraining agent, 2 parts of methyl cellulose ether, 6 parts of sodium methylsilicate, 15 parts of polymer resin rubber powder, 12 parts of acrylate emulsion, 16 parts of polyvinyl alcohol liquor and 68 parts of inorganic salt compounds. The toughness, viscosity and water-resistance of the insulation board are enhanced, the performance of a composite material is optimized, and the utilization ratio of renewable resources is high, and the cost is low.

Description

[0001] technical field [0002] The invention relates to the technical field of building materials, in particular to a building exterior wall insulation board. Background technique [0003] Building energy conservation is an important part of China's energy conservation work. There are a wide variety of external insulation materials used for building exterior walls, including inorganic materials, organic materials, composite materials, etc.; used for beams, columns, shear walls and non-self-insulating masonry walls The insulation treatment of the body is made of board or mortar insulation materials. The relevant national construction regulations are: 1. Base treatment; 2. Make ash cake and punch bars; 3. Interface mortar construction; Insulation mortar (the insulation mortar needs to be painted in stages); 5. Maintenance of the insulation layer; 6. Install the grid groove by playing the grid line; 7. Paint the bottom layer with anti-cracking mortar; 8. Add galvanized welded ...

AI Technical Summary

Problems solved by technology

At present, the A-class fire-proof insulation boards on the market have low compressive and flexural strength, and are brittle in texture. They are easily broken when used as templates when they are built into reinforced concrete.

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