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Preparation method of foamed cement composite board

A foamed cement and composite board technology, used in ceramic products, applications, household appliances, etc., can solve the problems of poor stability, large shrinkage, poor toughness, etc., and achieve no cracking, small shrinkage, and good toughness.

Inactive Publication Date: 2017-03-08
CHANGZHOU DINGRI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the disadvantages of poor stability, low strength, large shrinkage rate, easy cracking and poor toughness of the foamed cement composite board slurry at present, a kind of mixed ball grinding of calcium carbonate and silicon carbide is provided. Mix fillers, then mix with fly ash, waste glass powder, etc., extrude and granulate, and then calcine to make light porous glass-ceramics, then take diatomite, bentonite, etc., mix ball mills, and mix diatomite with alkali solution to gel Finally, it is mixed with lightweight porous glass-ceramics, Portland cement, etc. to form a slurry, injected into the template, and maintained to obtain a foamed cement composite board, which effectively solves the problem of poor stability and strength of the traditional foamed cement composite board slurry. The problem of low and large shrinkage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] First weigh 2g of hydroxymethyl cellulose, 1g of magnesium sulfate, 2g of calcium stearate, 10g of calcium carbonate and 5g of silicon carbide, put them into a ball mill in turn, and mill at 300r / min for 30min, then add 6g of boric acid and continue to mill for 1h , through a 200-mesh sieve to obtain a mixed filler; then weigh 100g of fly ash and 150g of waste glass respectively, put them into a pulverizer to pulverize them, and pass through a 120-mesh sieve; put the sieved powder into a mixer, and then Add 8g of the above-mentioned mixed filler, 100mL deionized water, mix well and put it into a granulator to extrude and granulate to form a porous glass-ceramic billet. Put the porous glass-ceramic billet in a brick kiln and calcinate it at 600°C for 1 hour. Cool down to room temperature with the furnace to obtain lightweight porous glass-ceramics for later use; then weigh 70g of diatomite, 16g of bentonite, 2g of rubber powder and 0.5g of sodium carbonate, put them into ...

example 2

[0019] First weigh 3g of hydroxymethyl cellulose, 2g of magnesium sulfate, 3g of calcium stearate, 11g of calcium carbonate and 6g of silicon carbide, put them into a ball mill in sequence, and mill at 350r / min for 40min, then add 7g of boric acid and continue to mill for 2h , through a 200-mesh sieve to obtain a mixed filler; then weigh 110g of fly ash and 165g of waste glass respectively, add them to a pulverizer to pulverize them, and pass through a 120-mesh sieve; put the sieved powder into a mixer, and then Add 10g of the above-mentioned mixed filler, 150mL deionized water, mix evenly and put it into a granulator to extrude and granulate to form a porous glass-ceramic billet. Put the porous glass-ceramic billet in a brick kiln and calcinate at 700°C for 2 hours. Cool down to room temperature with the furnace to obtain lightweight porous glass-ceramics for later use; then weigh 73g of diatomite, 17g of bentonite, 3g of rubber powder and 0.7g of sodium carbonate, put them in...

example 3

[0022]First weigh 3g of hydroxymethyl cellulose, 2g of magnesium sulfate, 3g of calcium stearate, 12g of calcium carbonate and 6g of silicon carbide, and put them into a ball mill in turn, mill at 400r / min for 50min, then add 8g of boric acid, and continue to mill for 2h , through a 200-mesh sieve to obtain a mixed filler; then weigh 120g of fly ash and 180g of waste glass respectively, put them into a pulverizer to pulverize them, and pass through a 120-mesh sieve; put the sieved powder into a mixer, and then Add 12g of the above-mentioned mixed filler, 200mL deionized water, mix well and put it into a granulator to extrude and granulate to form a porous glass-ceramic billet. Put the porous glass-ceramic billet in a brick kiln and calcinate at 800°C for 2 hours. Cool down to room temperature with the furnace to obtain lightweight porous glass-ceramics for later use; then weigh 75g of diatomite, 18g of bentonite, 3g of rubber powder and 0.8g of sodium carbonate, put them into a...

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Abstract

The invention discloses a preparation method of foamed cement composite boards and belongs to the technical field of the foamed cement composite boards. The preparation method includes: mixing and ball-milling calcium carbonate and silicon carbide into a mixed filler; mixing the mixed filler with coal ash and waste glass powder, extruding for granulation, and calcining to obtain lightweight porous microcrystalline glass; mixing and ball-milling diatomite and bentonite, preparing diatomite, bentonite and an alkaline solution into a diatomite gelatinizer; mixing the diatomite gelatinizer, the lightweight porous microcrystalline glass and silicate cement to form slurry, injecting the slurry into a formwork, and maintaining to obtain the foamed cement composite boards. By the method, the problem that conventional foamed cement composite boards are low in slurry stability and strength and high in shrinkage rate is solved effectively. The preparation method has the advantages that the preparation steps are simple, the foamed cement composite boards are low in shrinkage rate, strength is improved by 25-30% when compared with that of other foamed cement composite boards, and the slurry is high in stability; the foamed cement composite boards are high in tenacity and free of cracking.

Description

technical field [0001] The invention relates to a preparation method of a foamed cement composite board, belonging to the technical field of foamed cement composite board preparation. Background technique [0002] Building energy conservation is the main content of implementing national environmental protection and energy conservation policies, and new wall insulation materials are a link that cannot be ignored in building energy conservation. Although traditional organic thermal insulation materials have the advantages of good thermal insulation and strong processability, they also have disadvantages such as easy aging, poor durability, and easy combustion. The foamed cement composite board uses the foaming system of the foaming machine to mechanically prepare the aqueous solution of the foaming agent into foam, then adds the foam to the cement slurry, and then adds the foam to the cement slurry, after mixing and stirring. It is a porous material formed by casting, molding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B38/02C04B28/04C03C11/00C03C10/00C03C6/02C04B14/24
CPCC04B38/08C03C1/002C03C10/0063C03C11/007C04B14/24C04B28/04C04B38/02C04B2201/10C04B2201/20C04B2201/32C04B2201/50C04B38/0067C04B22/068C04B22/126C04B14/06C04B14/08C04B14/104C04B24/24C04B22/10C04B22/062
Inventor 周丽花邹宇帆宋豪
Owner CHANGZHOU DINGRI ENVIRONMENTAL PROTECTION TECH
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