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Foamed cement heat insulation board and preparation method thereof

A technology of foamed cement and insulation board, which is applied in the field of building materials, can solve the problems of short service life, quality loss, and wall shedding, and achieve the effect of long service life, long time and good flame retardancy

Active Publication Date: 2012-07-25
YIXING CITY DADONGFANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing foamed cement exterior wall insulation materials mainly use sulphoaluminate quick-drying cement foaming, which has a short service life, serious carbonization, quality deterioration, and wall shedding within two years.

Method used

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  • Foamed cement heat insulation board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Preparation of water repellent: by weight percentage, take by weight 15% of stearic acid, 1.5% of sodium carbonate, 3.5% of ammonia (commercially available), and the balance is water; first after the water is boiled, add stearic acid and stir to cool down to 50°C, then add sodium carbonate and stir evenly, and finally add ammonia water and stir until the material is completely dissolved.

[0017] (2) 136kg of ordinary Portland cement, 63kg of fly ash, 3kg of waterproofing agent prepared in step (1), 0.06kg of calcium formate, 6.5kg of active silica powder (Shanghai Tiankai Silicon Powder Material Co., Ltd.) and 0.75 kg of vinylon After mixing evenly, add 108kg of warm water at 45°C and stir evenly to make a slurry, then add 13.5kg of foaming agent hydrogen peroxide to the slurry to foam, and then make foamed cement insulation board according to the conventional method; the setting time is 18~ After 24 hours, the back wall reaches the same strength and life as the wa...

Embodiment 2

[0019] (1) Preparation of waterproofing agent: by weight percentage, take by weight 13% of stearic acid, 1.8% of sodium carbonate, 4% of ammonia (commercially available), and the balance is water; first after the water is boiled, add stearic acid and stir to cool down to 50°C, then add sodium carbonate and stir evenly, and finally add ammonia water and stir until the material is completely dissolved.

[0020] (2) Weigh 120kg of ordinary Portland cement, 50kg of fly ash, 2kg of waterproofing agent prepared in step (1), 0.05kg of calcium formate, 5kg of active silica powder (Shanghai Tiankai Silicon Powder Material Co., Ltd.) and 0.6kg of vinylon After mixing evenly, add 92kg of warm water at 45°C and stir evenly to make a slurry, then add 12kg of foaming agent hydrogen peroxide to the slurry for foaming, and then make foamed cement insulation boards according to conventional methods; the setting time is 18 to 24 hours , the back wall reaches the same strength and the same life ...

Embodiment 3

[0022] (1) Preparation of waterproofing agent: by weight percentage, take by weight 17% of stearic acid, 1.2% of sodium carbonate, 3% of ammonia (commercially available), and the remainder is water; first after the water is boiled, add stearic acid and stir to cool down to 50°C, then add sodium carbonate and stir evenly, and finally add ammonia water and stir until the material is completely dissolved.

[0023] (2) Weigh 155kg of ordinary Portland cement, 75kg of fly ash, 4kg of waterproofing agent prepared in step (1), 0.07kg of calcium formate, 7.5kg of active silica powder (Shanghai Tiankai Silicon Powder Material Co., Ltd.) and 0.9 kg of vinylon After mixing evenly, add 125kg of warm water at 45°C and stir evenly to make a slurry, then add 15kg of foaming agent hydrogen peroxide to the slurry for foaming, and then make foamed cement insulation boards according to conventional methods; the setting time is 18 to 24 Hours, the back wall reaches the same strength and the same ...

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Abstract

The invention discloses a foamed cement heat insulation board and a preparation method thereof. The foamed cement heat insulation board comprises the components in parts by weight: 100-180 parts of ordinary portland cement, 40-90 parts of pulverized fuel ash, 2-5 parts of waterproofing agent, 0.04-0.09 part of calcium formate, 4-9 parts of activated silica, 0.5-1 part of fiber and 10-18 parts of foaming agent. The foamed cement heat insulation material disclosed by the invention is a non-combustible material, has the fireproof flame retardant standard reaching to level A, and is non-toxic, odorless and free from environmental pollution, thus being an energy-saving and environment-friendly material; and the foamed cement heat insulation board made of the foamed cement heat insulation material is long in service life which is equal to that of a building, thus being the best energy-saving material in the current building energy conservation market. Meanwhile, the foamed cement heat insulation board is good in waterproof effect and long in waterproof time, and has the waterproof service life equal to that of the building.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a foamed cement insulation board and a preparation method thereof. Background technique [0002] Foamed cement is one of the inorganic thermal insulation materials for exterior walls. It was first introduced into my country around 1980 when the material used in Germany was introduced. Through the foaming system of the foaming machine, the foaming agent is fully foamed mechanically, and the foam is evenly mixed with the cement slurry, and then the pumping system of the foaming machine is used for cast-in-place construction or mold molding. A new type of lightweight insulation material containing a large number of closed pores is formed. It belongs to the bubble-like thermal insulation material, and its outstanding feature is that it forms closed foam pores inside the concrete, which makes the concrete lightweight and thermally insulated. The existing foamed cement e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/02
Inventor 周志中
Owner YIXING CITY DADONGFANG IND
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