Cement gypsum ceramsite composite foaming sandwich thermal insulation wallboard

Abstract

The invention relates to a cement gypsum ceramsite composite foaming sandwich thermal insulation wallboard. Belongs to the field of building materials, and is characterized in that the cement gypsum ceramsite composite foaming sandwich thermal insulation wallboard is divided into a three-layer structure, and the first layer is a cement ceramsite foaming layer. The second layer is a heat preservation layer formed by welding a phenolic aldehyde heat preservation plate and a double-face steel wire mesh. And the third layer is a desulfurized gypsum ceramsite perlite foaming layer. The cement gypsum ceramsite composite foaming sandwich thermal insulation wallboard has the advantages of being light in weight, fireproof and convenient to construct. The method is particularly suitable for rural vegetable greenhouses and light-steel-structure buildings.

Description

Technical Field

[0001] The invention discloses a cement gypsum ceramsite composite foamed sandwich thermal insulation wallboard, which belongs to the field of building materials, in particular to a method for manufacturing the cement gypsum ceramsite composite foamed sandwich thermal insulation wallboard. Technical Background

[0002] With the change of global climate, the requirements for energy saving and consumption reduction of housing buildings are getting higher and higher, and national policies are also constantly improving the standards of building energy saving. In recent years, many innovative energy-saving products have emerged in the construction industry, such as self-insulating bricks and various organic and inorganic insulation boards, but there are not many products that integrate insulation functions on wallboards. The cement gypsum ceramsite composite foamed sandwich insulation wallboard of the present invention makes up for the above shortcomings. The wallboard of the present invention greatly improves the energy saving and insulation effect of light steel structure and prefabricated building. The wallboard of the present invention is divided into a three-layer structure. The part close to the outer wall is foamed by cement ceramsite to form a protective layer of the outer wall. The middle part is composed of phenolic insulation board and double-sided hot-dip galvanized steel wire mesh to form an intermediate insulation layer. The inner wall is composed of desulfurized gypsum, ceramsite, and perlite foamed to form the inner wall. Since the inner layer is gypsum material, it also has the function of hygroscopicity and humidity regulation of gypsum to improve the comfort of the room. The wallboard of the present invention is composited with cement, ceramsite, gypsum and sandwich insulation board to play the functions of light weight, fire prevention and insulation. It is particularly suitable for large vegetable screens, light steel structure buildings and prefabricated buildings in the north. BRIEF DESCRIPTION OF THE DRAWINGS

[0003] Figure 1 Schematic diagram of the cross-sectional structure of the thermal insulation wall panel of the present invention Summary of the invention

[0004] The cement gypsum ceramsite composite foamed sandwich thermal insulation wallboard of the invention consists of a three-layer structure.

[0005] The first layer is a cement ceramsite foaming layer, the middle layer is a galvanized wire mesh insulation layer, and the third layer is a desulfurized gypsum, ceramsite, and perlite foaming layer. The first layer is composed of ordinary silica cement, sulphoaluminate cement, lightweight ceramsite, polycarboxylate water reducer, silica fume, calcium aluminate, stone powder, basalt fiber, foam stabilizer, and foaming agent.

[0006] The recipe is as follows:

[0007] Ordinary silica cement 80, sulphoaluminate cement 15, ceramsite 30, water reducer 0.1, silica fume 5, calcium aluminate 3, stone powder 10, basalt fiber 2, foam stabilizer 0.5, foaming agent 4.

[0008] Preparation method:

[0009] Add all materials except ceramsite and foaming agent into the mixer and mix evenly, add 40.5% water by weight and mix evenly, add ceramsite and mix evenly, add foaming agent and mix evenly until foaming, then pour into one side of the mold phenolic insulation board. Hot dip galvanized steel wire mesh, 100mm mesh spacing, used The hot-dip galvanized steel wire is welded on both sides and placed in the middle of the mold. The third layer of desulfurized gypsum ceramsite perlite foaming layer is composed of the following materials: desulfurized gypsum powder, general silica cement, lime powder, polyvinyl alcohol, oxalic acid, potassium oxalate, aluminum sulfate, metakaolin, melamine water reducer, cellulose ether with a viscosity of 200-400, retarder, and foaming agent.

[0010] The recipe is as follows:

[0011] Desulfurized gypsum powder 90, cement 15, lime lime 6, kaolin 5, aluminum sulfate 2, water reducer 5, cellulose ether 0.2, retarder 0.15, foaming agent 3, ceramsite 20, perlite 5.

[0012] Preparation method:

[0013] Add all materials except ceramsite, perlite and foaming agent into a blender and mix well. Add 50% water by mass and continue to mix well. Add ceramsite and perlite and continue to mix well. Add foaming agent and stir until foaming evenly. Pour into the other side of the mold. After slight vibration, place for 12 hours and then demould. Natural curing for 7 days.

Claims

1. The cement gypsum ceramsite composite foamed sandwich insulation wallboard of the present invention consists of a three-layer structure. The first layer is a cement lightweight ceramsite foaming layer, and its material composition is ordinary silica cement, sulphoaluminate cement, silica fume, stone powder, ceramsite, water reducer, cellulose ether, foam stabilizer, foaming agent, coagulant, and basalt fiber. The cement is 42.5 ordinary silica cement, sulphoaluminate cement or aluminate cement, the stone powder is 200-300 days, the ceramsite is a high-temperature fired lightweight ceramsite with a particle size of 3-4mm, the water reducer is a polycarboxylate water reducer, the cellulose ether is 200-400 degrees, the foam stabilizer is a hard salt foam stabilizer, and the foaming agent is hydrogen peroxide; The recipe is as follows: Cement 75-90, sulphoaluminate cement 10-15, ceramsite 20-30, water reducer 0.1-0.15, silica fume 3-5, calcium aluminate 2-3, stone powder 8-10, basalt fiber 1.5-2, foam stabilizer 0.5-1, foaming agent 4-5; The second middle sandwich layer is made of 60mm phenolic insulation board, with 0.1mm hot-dip galvanized steel wire on both sides and 0.1mm hot-dip galvanized steel wire inserted and welded with 100mmX100mm in the middle, and placed in the middle of the wall panel; The third layer is the desulfurized gypsum ceramsite perlite foaming layer. It is composed of desulfurized gypsum, ceramsite, perlite, ordinary silica cement, kaolin, aluminum sulfate, water reducer, cellulose ether, retarder, and foaming agent. The desulfurized gypsum is building desulfurized gypsum, the ceramsite is 3-4mm lightweight ceramsite, the perlite is closed-cell perlite, the ordinary silica cement is 32.5 cement, the water reducer is melamine water reducer, the cellulose ether has a viscosity of 200-400 viscosity units, the retarder is citric acid, the foaming agent is hydrogen peroxide, lime calcium powder can also be replaced by lime, and the polyvinyl alcohol is 2488; The recipe is as follows: Desulfurized gypsum 90-100, cement 10-20, lime powder 4-5, polyvinyl alcohol 10-15, oxalic acid 0.5-1, potassium oxalate 1-2.5, ceramsite 30-40, perlite 5-10, water reducer 0.5-1, cellulose ether 0.1-0.5, retarder 0.1-0.3, short fiber 1.5-2.

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