A kind of antirust agent for autoclaved aerated concrete slabs and its preparation method

A concrete slab, autoclaved aerated technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems affecting the structural performance and quality control of autoclaved aerated concrete slabs, low rebar cohesion, and a large proportion of fine sand. , to avoid the problem of sinking, avoid damage and failure, and achieve the effect of high degree of crystallization

Active Publication Date: 2018-05-04
广东省建筑材料研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the anti-rust agents for steel bars used in the production of autoclaved aerated concrete slabs are mainly composed of ground sand, lime, cement, water-based paint or emulsified asphalt. These anti-rust agents have good anti-rust performance, but there are widespread The problem of low bonding strength of steel bars, and due to the large proportion of ground sand, it is easy to sink and stratify during use, and it is difficult to disperse evenly even if it is stirred, which affects the structural performance and quality control of autoclaved aerated concrete slabs

Method used

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  • A kind of antirust agent for autoclaved aerated concrete slabs and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Raw materials and performance requirements of micro-nano steel bar rust inhibitor for autoclaved aerated concrete slabs:

[0043] Silicone-modified acrylic emulsion has a solid content of 30% (LR-308A of Guangzhou Baiyun Henghe Fine Chemical Factory); silica sol emulsion, SiO 2 The content is 20%; the specific surface area of ​​silica fume is 20m 2 / g, when silica fume is preferably smelting industrial silicon or silicon-containing alloys, it is obtained by reducing high-purity quartz and coke in a high-temperature electric arc furnace. Commercially available products such as those produced by the Norwegian Elkem Group; lime is slaked lime powder; The cement is PO42.5 Portland cement; the fineness of light calcium silicate is 1000 mesh; The agent is silicone emulsion defoamer; the dispersant is sodium hexametaphosphate.

[0044] The autoclaved aerated concrete slab is made of the following raw materials in terms of the mass percentage of the raw materials:

[0045] S...

Embodiment 2

[0061] Raw materials and performance requirements of micro-nano steel bar rust inhibitor for autoclaved aerated concrete slabs:

[0062] The solid content of silicone modified acrylic emulsion is 30% (Dongguan Longqin Chemical Co., Ltd. 9908A); silica sol emulsion SiO 2 The content is 30%; the specific surface area of ​​silica fume is 18m 2 / g; lime is slaked lime powder; cement is PO42.5 Portland cement; the fineness of light calcium silicate is 800 mesh; film-forming aid is alcohol ester twelve; 6000; the defoamer is a silicone emulsion defoamer; the dispersant is sodium hexametaphosphate.

[0063] The autoclaved aerated concrete slab uses a micro-nano steel antirust agent, which is composed of the following components in terms of mass percentage of raw materials:

[0064] Silicone modified acrylic emulsion: 25%;

[0065] Silica sol emulsion: 15%;

[0066] Lime: 8%;

[0067] Silica fume: 8%;

[0068] Cement: 12%;

[0069] Light calcium silicate: 8%;

[0070] Coalescin...

Embodiment 3

[0080] Raw materials and performance requirements of micro-nano steel bar rust inhibitor for autoclaved aerated concrete slabs:

[0081] Silicone-modified acrylic emulsion has a solid content of 50%; silica sol emulsion SiO 2 The content is 25%; the specific surface area of ​​silica fume is 20m 2 / g; lime is slaked lime powder; cement is PO42.5 Portland cement; light calcium silicate fineness is 800 mesh; film-forming aid is alcohol ester twelve; viscosifier is hydroxypropyl methylcellulose Ether, 100,000 viscosity; defoamer is silicone emulsion defoamer; dispersant is sodium hexametaphosphate.

[0082] The autoclaved aerated concrete slab uses a micro-nano steel antirust agent, which is composed of the following components in terms of mass percentage of raw materials:

[0083] Silicone modified acrylic emulsion: 20%;

[0084] Silica sol emulsion: 15%;

[0085] Lime: 10%;

[0086] Silica fume: 12%;

[0087] Cement: 12%;

[0088] Light calcium silicate: 10%;

[0089] Co...

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Abstract

The invention discloses a micro-nano reinforcing steel bar anti-rusting agent for an autoclaved aerated concrete slab. The micro-nano reinforcing steel bar anti-rusting agent is prepared from the following raw materials in percentage by mass: 15-25% of organosilicone modified crylic acid emulsion, 15-20% of silicon sol emulsion, 8-12% of lime, 8-12% of silicon ash, 8-12% of cement, 8-12% of light calcium carbonate, 3-8% of a coalescing agent, 0.2-3% of a tackifier, 0.1-0.7% of a defoaming agent, 0.1-0.5% of a dispersing agent and the balance of water. The micro-nano reinforcing steel bar anti-rusting agent is relatively easy to stir uniformly, so that the dip-coating quality stability can be ensured, the bonding force of a reinforcing steel bar can be greatly increased, the anti-rusting property of the reinforcing steel bar is further improved, tests show that various indexes are all superior to those required in GB 15762-2008 and JC / T 855-1999, and meanwhile the micro-nano reinforcing steel bar anti-rusting agent has the advantages of stable quality, environment-friendliness and the like. The invention further discloses a preparation method of the micro-nano reinforcing steel bar anti-rusting agent.

Description

technical field [0001] The invention belongs to the technical field of autoclaved aerated concrete slabs, and in particular relates to a micro-nano steel bar rust inhibitor for autoclaved aerated concrete slabs and a preparation method thereof. Background technique [0002] Autoclaved aerated concrete slab is an important member of autoclaved aerated concrete products. It is a green, light-weight, thermal insulation, thermal insulation and mechanical performance building material. It can be used as internal partition walls, external walls, floors and The roof has many advantages such as factory standardized production, can be sawed and cut, easy to install, save manpower and shorten the construction period. With the further development of building energy conservation in my country, the continuous advancement of housing industrialization, and the transformation of building technology to industrial design, factory production, and prefabricated construction, there will be a lar...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C09D133/00C09D1/00C09D5/08C09D7/61C09D7/63C09D7/65
CPCC09D5/08C09D7/61C09D7/63C09D133/00C08L1/284C08L71/00C08K13/02C08K3/36C08K2003/2206C08K2003/265C08K5/103
Inventor张宪圆林克辉杨军谢红波
Owner广东省建筑材料研究院有限公司