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A kind of foam cement board and preparation method thereof

A foamed cement board and cement technology, applied in the field of building materials, can solve the problems of poor mechanical properties, high brittleness, low thermal conductivity, etc., and achieve the effects of excellent thermal insulation properties, excellent mechanical properties and cohesiveness

Active Publication Date: 2021-12-17
江苏省苏安能节能建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foamed cement board is a kind of external wall insulation material that is gradually emerging at present. It is not easy to age, has the same life as the building, light bulk density, low thermal conductivity, and the fire resistance limit is more than 3 hours. Poisonous gas and other advantages, but the disadvantages of the foamed cement version are also obvious, that is, poor mechanical properties, low strength, high brittleness, very easy to break and damage, which brings great inconvenience to the transportation and construction process

Method used

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  • A kind of foam cement board and preparation method thereof
  • A kind of foam cement board and preparation method thereof
  • A kind of foam cement board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Raw material composition (parts by weight): 100 parts of white Portland cement, 25 parts of polyurethane / epoxy resin / fly ash composite material, 15 parts of hydrogen peroxide, 3 parts of N-hydroxyethylethylenediaminetriacetic acid, N-phenyl -1 part of N'-cyclohexyl-p-phenylenediamine, 5 parts of cellulose ether, 3 parts of polycarboxylate superplasticizer, 5 parts of glass fiber and 50 parts of water.

[0036] The strength grade of white Portland cement is 32.5.

[0037] Polyurethane / epoxy / fly ash composites were prepared by:

[0038] S1. Composite of 20g of fly ash and 10g of epoxy resin: take fly ash and pour it into 200mL of 75% ethanol aqueous solution, add epoxy resin, stir evenly at 500r / min, process for 30min, put the compound into a dry In the oven, vacuum dry at 60°C for 1 hour;

[0039] S2. Preparation of component A: Take out 100g of the compound and add it to 20g of polyether polyol TMN450 (hydroxyl value: 220mgKOH / g), add 0.5g of dibutyltin dilaurate and ...

Embodiment 2

[0044] Composition of raw materials (parts by weight): 150 parts of composite Portland cement, 40 parts of polyurethane / epoxy resin / fly ash composite material, 20 parts of hydrogen peroxide, 7 parts of ethylenediaminetetraacetic acid, 6-ethoxy-2,2 , 3 parts of 4-trimethyl-1,2-dihydroquinoline, 10 parts of cellulose ether, 5 parts of polycarboxylate superplasticizer, 15 parts of glass fiber and 100 parts of water.

[0045] The strength grade of composite Portland cement is 32.5.

[0046] Polyurethane / epoxy / fly ash composites were prepared by:

[0047] S1. Composite of 40g of fly ash and 10g of epoxy resin: take fly ash and pour it into 200mL of 80% ethanol aqueous solution, add epoxy resin, stir evenly at 700r / min, process for 60min, put the compound into a dry In the oven, vacuum dry at 60°C for 2 hours;

[0048] S2. Preparation of component A: Take out 100g of the compound and add it to 35g of polyether polyol GR4110B (hydroxyl value: 550mgKOH / g), add 1g of N-ethylmorpholin...

Embodiment 3

[0053] Composition of raw materials (parts by weight): 125 parts of Portland cement, 32 parts of polyurethane / epoxy resin / fly ash composite material, 17 parts of hydrogen peroxide, 5 parts of diethylamine pentaacetic acid, N-phenyl-N'-isopropyl Base-2 parts of p-phenylenediamine, 7 parts of cellulose ether, 4 parts of polycarboxylate superplasticizer, 10 parts of glass fiber and 70 parts of water.

[0054] The strength grade of Portland cement is 32.5.

[0055] Polyurethane / epoxy / fly ash composites were prepared by:

[0056] S1. Compounding of 30g of fly ash and 10g of epoxy resin: take fly ash and pour it into 200mL of 77% ethanol aqueous solution, add epoxy resin, stir evenly at 600r / min, process for 45min, put the compound into a dry In the oven, vacuum dry at 60°C for 1.5h;

[0057] S2. Preparation of component A: Take out 100g of the compound and add it to 27g of polyether polyol GR4110B (hydroxyl value: 550mgKOH / g), add 0.7g of stannous isooctanoate and 0.5g of antimon...

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Abstract

The present invention proposes a foamed cement board, which is prepared from the following raw materials in parts by weight: Portland cement 100-150 parts, polyurethane / epoxy resin / fly ash composite material 25-40 parts, hydrogen peroxide 15-20 parts 3-7 parts of foam stabilizer, 1-3 parts of anti-aging agent, 5-10 parts of cellulose ether, 3-5 parts of polycarboxylate superplasticizer, 5-15 parts of glass fiber and 50-100 parts of water. The foamed cement board prepared by the invention has good thermal insulation performance, good fireproof performance, good sound insulation performance, good durability, high and low temperature resistance, corrosion resistance and weather resistance, and has the characteristics of early strength and high strength. The problem of high brittleness and easy breakage has been solved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a foamed cement board and a preparation method thereof. Background technique [0002] The implementation of building energy-saving policies has promoted the development of wall insulation materials. Organic foam plastic insulation materials such as polystyrene and polyurethane are widely used in wall insulation. However, such organic foam plastic insulation materials are extremely flammable. When burning, the fire spreads rapidly and is accompanied by a large amount of poisonous gas and smoke. Serious difficulties in work, resulting in casualties and property damage. At the same time, this type of insulation material also has disadvantages such as easy aging and poor dimensional stability. Compared with organic foam insulation materials, inorganic insulation materials have the advantages of good fire resistance, small deformation coefficient, strong anti-aging perfor...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/02B28B1/50C04B111/40C04B111/28
CPCC04B28/04C04B38/02B28B1/50C04B2111/40C04B2201/20C04B2201/32C04B2111/28C04B2201/50C04B18/08C04B24/282C04B24/281C04B22/068C04B24/121C04B24/383C04B2103/302C04B14/42C04B24/128
Inventor 周锦峰
Owner 江苏省苏安能节能建材科技有限公司
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