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Composite foamed cement board good in water-resistance property and preparation method of composite foamed cement board

A composite foaming and cement board technology, which is applied in ceramic products, climate sustainability, and other household appliances, etc., can solve the problems of pulverization when encountering water, large cells inside the foam board, low tensile strength and compressive strength, etc. problem, to achieve the effect of not easy to crack, good heat preservation effect and good water resistance

Inactive Publication Date: 2015-03-25
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The defects of the existing composite foamed cement boards are as follows: Most products use sulphoaluminate cement as the main material, which has low tensile strength and compressive strength, severe pulverization when exposed to water, and high brittleness. It is easy to crack, the internal cells of the foam board are large and the pore sizes are different, and the thermal insulation performance is difficult to meet the standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The formula of the good composite foamed cement board of the present invention is as follows:

[0015] Portland cement 150kg, fly ash 18kg, gypsum 4kg, polypropylene fiber 0.4kg, pp fiber 0.2kg, sodium metasilicate 0.5kg, calcium stearate 0.3kg, triethanolamine 0.4kg, aluminum sulfate 2.5kg, magnesium chloride 0.5kg, sodium nitrate 0.2kg, foaming agent 1kg, foam stabilizer 0.4kg, water repellent 5kg, water 130kg.

[0016] The preparation method of the composite foamed cement board with good water resistance of the present invention is:

[0017] Prepare materials according to the weight ratio of the above components, first add Portland cement, fly ash, gypsum, polypropylene fiber, pp fiber, sodium metasilicate, calcium stearate and water into the powder mixer and fully stir to make pulp , then add triethanolamine, aluminum sulfate, magnesium chloride, sodium nitrate, foaming agent, foam stabilizer and water repellent, stir and mix thoroughly, pour into the mold, without...

Embodiment 2

[0019] The formula of the good composite foamed cement board of the present invention is as follows:

[0020] Portland cement 140kg, fly ash 15kg, gypsum 5kg, polypropylene fiber 0.5kg, pp fiber 0.1kg, sodium metasilicate 0.6kg, calcium stearate 0.2kg, triethanolamine 0.3kg, aluminum sulfate 2kg, magnesium chloride 0.4 kg, sodium nitrate 0.1kg, foaming agent 1.2kg, foam stabilizer 0.5kg, water repellent 3kg, water 135kg.

[0021] The preparation method of the composite foamed cement board with good water resistance in this embodiment is the same as that in Embodiment 1.

Embodiment 3

[0023] The formula of the good composite foamed cement board of the present invention is as follows:

[0024] Portland cement 160kg, fly ash 20kg, gypsum 3kg, polypropylene fiber 0.3kg, pp fiber 0.3kg, sodium metasilicate 0.4kg, calcium stearate 0.4kg, triethanolamine 0.5kg, aluminum sulfate 3kg, magnesium chloride 0.6 kg, 0.3kg of sodium nitrate, 0.8kg of foaming agent, 0.3kg of foam stabilizer, 6kg of water-repellent agent, and 125kg of water.

[0025] The preparation method of the composite foamed cement board with good water resistance in this embodiment is the same as that in Embodiment 1.

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PUM

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Abstract

The invention provides a composite foamed cement board good in water-resistance property. The cement board is prepared from the following components in parts by mass: 140-160 parts of silicate cement, 15-20 parts of coal ash, 3-5 parts of gypsum, 0.3-0.5 part of polypropylene fiber, 0.1-0.3 parts of polypropylene fiber, 0.4-0.6 parts of sodium metasilicate, 0.2-0.4 parts of calcium stearate, 0.3-0.5 parts of triethanolamine, 2-3 parts of aluminum sulfate, 0.4-0.6 parts of magnesium chloride, 0.1-0.3 parts of sodium nitrate, 0.8-1.2 parts of a foaming agent, 0.3-0.5 parts of a foam stabilizer, 3-6 parts of a water repellent and 125-135 parts of water. The composite foamed cement board good in water-resistance property, disclosed by the invention, is high in tensile strength and compressive strength; during exterior wall thermal insulation construction, the composite foamed cement board can be used for preventing the exterior wall from cracking, and is good in water-resistance property, free from pulverization in water, consistent in pore size in the foamed board and excellent in heat insulation property.

Description

technical field [0001] The invention belongs to the technical field of external thermal insulation systems for external walls, and in particular relates to a composite foamed cement board with good water resistance. Background technique [0002] Composite foamed cement board is a kind of closed-cell lightweight inorganic foamed insulation board made by foaming, curing, cutting and other processes. Organic flammable insulation materials represented by board or extruded board. [0003] The defects of the existing composite foamed cement boards are as follows: Most products use sulphoaluminate cement as the main material, which has low tensile strength and compressive strength, severe pulverization when exposed to water, and high brittleness. It is easy to crack, the internal cells of the foam board are large and the pore sizes are different, and the thermal insulation performance is difficult to meet the standard. Contents of the invention [0004] In order to solve the pr...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/02C04B18/08C04B16/06
CPCY02W30/91
Inventor 朱万旭马倩
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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