Integrated self-insulating light wallboard

Abstract

The invention provides an integrated self-insulating light wallboard, which comprises an insulating middle layer, an upper external surface layer and a lower external surface layer, wherein the upper external surface layer and the lower external surface layer comprise 900 to 950 parts of cement, 100 to 150 parts of fly ash, 24 to 28 parts of anhydrous calcium chloride, 20 to 24 parts of sodium nitrite, 3.0 to 4.0 parts of polyvinyl alcohol, 3.0 to 3.8 parts of foaming agent and alkali-free fiber glass mesh; the insulating middle layer comprises expanded perlite or polyphenyl particles and an insulating mortar material; wherein the insulating mortar material comprises 400 to 600 parts of cement, 100 to 200 parts of silica fume, 200 to 260 parts of heavy calcium, 4.0 to 6.0 parts of methyl cellulose ether, 20 to 30 parts of latex powder and 2 to 3 parts of anti-pulling fiber. The integrated self-insulating light wallboard of the invention has no gap, is not layered nor hollowed, can be layered and cast with two slurry materials with the same components and properties, is formed once, and realizes the integrated solidification of the materials and the integral synthesis of the wallboard; and the manufacturing cost of the building can be greatly reduced by combining raw materials, labor expenses and the like for the wallboard and the external insulating system.

Description

technical field [0001] The invention belongs to the field of building wall materials, and relates to an integrated self-insulating lightweight wallboard, in particular to a method of placing several existing external wall insulation materials in the wallboard, and integrating the external wall insulation materials and technology with the wallboard. The board is an integrated self-insulating lightweight wallboard. Background technique [0002] In previous patents, light-weight thermal insulation walls mostly used polystyrene panels sandwiched between two layers of thin plates, called sandwich thermal insulation wall panels or composite thermal insulation wall panels. Due to quality problems, some cities (such as Beijing) have banned the use of such wall panels. Its disadvantages are: (1) The thickness of the outer layer is uneven: this board is mostly produced by hand or semi-mechanization, and the artificial difference is very large when laying the cloth, the thickness is un...

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Problems solved by technology

Its disadvantages are: (1) The thickness of the outer layer is uneven: this board is mostly produced by hand or semi-mechanization, and the artificial difference is very large when laying the cloth, the thickness is uneven, the stress is uneven, and there is irregular expansion and shrinkage deformation; ( 2) Abnormal seam cracking: When the board is installed, it is often cut and assembled. When the polystyrene board exposed after cutting is connected to another cement board, it is an abnormal connection. The effective connection part is very small, and cracking is inevitable; (3) Delamination and hollowing in the board: First, the two materials of the outer cement board and the sandwich benzene board are quite different, and the compatibility is poor, and the bonding is not strong; the second is that the heat of cement hydration will cause the polystyrene board to shrink when heated ( For example, the heat of hydration of magnesite cement reaches 60-80°C), resulting in delamination and hollow wallboards will seep into water or moisture, and will swell and shrink during freeze-thaw changes, cracks will become more serious, and even the whole board will swell and peel off

(2) and (3) The two external thermal insulation systems are not widely used due to the limited construction thickness (4-6cm)

(1) Insulation system is commonly used, but the quality of this polystyrene board thin plaster exterior wall insulation system is worrisome, mainly due to the peeling off of external tiles, cracks between the external insulation layer and the wall, water ingress, and large-scale peeling off, etc. Happens a lot

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