Preparation method of anti-rust paint for steel bars for autoclaved aerated concrete slabs
A technology of concrete slab and autoclaved aeration, which is applied in the production field of anti-rust paint for steel bars, can solve the problems affecting the comprehensive quality and service life of autoclaved aerated concrete slabs, low adhesion force of steel bars, etc. low, the effect of improving rust resistance, improving overall quality and service life
Active Publication Date: 2016-08-03
BEIJING BBMG AUTOCLAVED AERATED CONCRETE
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Problems solved by technology
[0003] At present, the anti-rust coatings for steel bars used in factories producing autoclaved aerated concrete slabs mainly include latex lime sand coatings, latex cement sand coatings, etc. These coatings have good anti-rust performance and meet the standards of GB15762-1995 and JC / 855-1999 However, there is a common problem of low adhesion of steel bars, which affects the comprehensive quality and service life of autoclaved aerated concrete slabs
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Embodiment
[0022] Realize the specific embodiment of the preparation method of a kind of autoclaved aerated concrete slab steel antirust coating of the present invention is:
[0023] One, at first carry out raw material selection and preparation:
[0024] Viscosifier: Add polyanionic cellulose, industrial soda ash, and water to the mixing tank in sequence at a weight ratio of 4%: 2%: 94%, and start stirring until the polyanionic cellulose is completely dissolved into a colorless and transparent viscous up to the liquid;
[0025] Emulsion: weigh nonylphenol polyoxyethylene ether and water in a weight ratio of 1:2, stir evenly and set aside;
[0026] Sand powder: Use a mill to grind silica sand into dry sand powder with a specific surface area of 4000, and store it for later use;
[0027] Carboxylated styrene-butadiene latex: solid content 50%;
[0028] Cement: PO42.5;
[0029] Emulsified asphalt: solid content 40%;
[0030] Two, after selecting and preparing various raw materials, ...
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Abstract
The invention provides a method for preparing an antirust coating for steel bars for autoclaved aerated concrete slabs, the purpose of which is to increase the adhesion of steel bars, improve the comprehensive quality and service life of autoclaved aerated concrete slabs, and use a tackifier in the method , emulsion, sand powder, cement, carboxylated styrene-butadiene latex and emulsified asphalt as raw materials, the anti-rust coating for steel bars has significantly improved the anti-rust performance of the steel bars in the plate, and at the same time solved the problem between the anti-rust coating and the autoclaved aerated concrete The problem of low adhesion of steel bars has improved the comprehensive quality and service life of autoclaved aerated concrete slabs. The results of comparative tests show that the adhesion of steel bars has increased from 1.05MPa to 1.23MPa. The anti-rust coating for steel bars for autoclaved aerated concrete slabs of the present invention can meet the production requirements of various autoclaved aerated concrete slabs, and has the advantages of low toxicity and less environmental pollution, and all the indicators are measured or better than GB15762 ‑1995 and JC / 855‑1999 standards.
Description
technical field [0001] The invention relates to the production technical category of an antirust coating for steel bars, in particular to a method for preparing an antirust coating for steel bars for autoclaved aerated concrete slabs. Background technique [0002] Autoclaved aerated concrete is a new type of building material developed in the 1930s, generally including autoclaved aerated concrete blocks and autoclaved aerated concrete slabs. Among them, the autoclaved aerated concrete slab is a green and environmentally friendly building material that uses cement, lime, silica sand and other siliceous materials as the main raw materials, and then configures different numbers of anti-corrosion-treated steel mesh sheets according to the structural requirements. Made of steam curing, it has good fire resistance, fire prevention, sound insulation, heat insulation, heat preservation and other properties. Since the autoclaved aerated concrete slab is a light, porous, and air-perm...
Claims
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IPC IPC(8): C04B28/04
Inventor 金学峰王小方张焕良杜海麒冯会永
Owner BEIJING BBMG AUTOCLAVED AERATED CONCRETE