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Polymer cement waterproof coating with high corrosion resistance and preparation method thereof

A waterproof coating and polymer technology, applied in chloroprene homopolymer coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., to achieve the effects of improved comprehensive performance, excellent seawater corrosion resistance, and high bonding strength

Inactive Publication Date: 2020-05-01
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above problems, aiming at the problems and defects of existing polymer cement waterproof coatings, to provide a polymer cement waterproof coating with high corrosion resistance, which has excellent acid resistance, sulfate resistance and seawater resistance Corrosive, stable structure, not easy to crack, can be directly constructed on wet interface, and has strong adhesion to concrete

Method used

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  • Polymer cement waterproof coating with high corrosion resistance and preparation method thereof
  • Polymer cement waterproof coating with high corrosion resistance and preparation method thereof
  • Polymer cement waterproof coating with high corrosion resistance and preparation method thereof

Examples

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preparation example Construction

[0032] In the embodiment of the present invention, the preparation method of the polymer cement waterproof coating includes:

[0033] First stir the cement and quartz sand evenly, add the homogeneous mixture of polymer emulsion and coupling agent, dispersant and pigment, stir for 3-5 minutes, then add defoamer and continue to stir for 1-3 minutes, and finally add water reducing agent and stir 1-3 minutes, after the stirring stops, let it stand for 1-3 minutes to obtain the polymer cement waterproof coating with high corrosion resistance.

Embodiment 1

[0035] This embodiment provides a polymer cement waterproof coating with high corrosion resistance.

[0036] The composition of the polymer cement waterproof coating of this embodiment is: 60g cement, 23g quartz sand, 109g polymer emulsion (acrylate emulsion: polyurethane emulsion=1:1, by mass percentage), 0.9g coupling agent, 0.3g minus Water agent, 0.3g dispersant, 1.8g defoamer, 0.5g pigment.

[0037] In this embodiment, the cement is 42.5 type ordinary Portland cement, the particle size of the quartz sand is 80-120 mesh; the acrylic emulsion is BP-2181, Beijing Mengtai Weiye Building Material Co., Ltd.; the polyurethane emulsion is PU-2188, Guangdong Guanzhi New Material Technology Co., Ltd.; coupling agent is KH-550, Jiangsu Chenguang Paint Co., Ltd., water reducing agent is FDN-I naphthalene series superplasticizer, Shanghai Yunzhe New Material Technology Co., Ltd.; dispersing agent is six Sodium metaphosphate, Shanghai Yunzhe New Material Technology Co., Ltd.; defoamer is s...

Embodiment 2

[0039] This embodiment provides a polymer cement waterproof coating with high corrosion resistance.

[0040] The composition of the polymer cement waterproof coating of this embodiment is: 60g cement, 23g quartz sand, 131g polymer emulsion (acrylate emulsion: neoprene rubber emulsion=1:1, by mass percentage), 0.9g coupling agent, 0.3 g water reducer, 0.3g dispersant, 2.2g defoamer, 0.5g pigment.

[0041] In this example, the cement is 42.5 type ordinary Portland cement, the particle size of the quartz sand is 80-120 mesh, the acrylic emulsion is the same as in Example 1, and the neoprene emulsion is 511A Beijing Mengtai Weiye Building Materials Co., Ltd. The coupling agent is the same as Example 1, the water reducing agent is the same as Example 1, the dispersant is the same as Example 1, the antifoaming agent is the same as Example 1, and the pigment is the same as Example 1.

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Abstract

The invention discloses a polymer cement waterproof coating with high corrosion resistance and a preparation method thereof. The high-corrosion-resistance polymer cement waterproof coating comprises the following raw materials: cement, quartz sand, a coupling agent, a defoaming agent, a water reducing agent, a dispersing agent, a pigment and a polymer emulsion. The polymer cement waterproof coating prepared by the invention is excellent in acid and alkali resistance, sulfate resistance and seawater corrosion resistance and high in bonding strength with a concrete base material, and still has high bonding strength after being corroded by acid, alkali and salt; the polymer cement waterproof coating prepared by the invention has excellent chloride ion permeability resistance, high density andlow water absorption rate; the polymer cement waterproof coating prepared by the invention can be constructed by using a blade coating, picture brushing or roll coating method, is easy to operate andpopularize, can be directly constructed on a humid basal plane, and is relatively low in cost.

Description

Technical field [0001] The invention belongs to the field of new concrete waterproof and anticorrosive coatings, and more specifically relates to a polymer cement waterproof coating with high corrosion resistance and a preparation method thereof. Background technique [0002] Marine reinforced concrete buildings have been eroded by seawater or salt spray for a long time, and a large number of corrosion points often appear on the surface of the concrete, and a large number of cracks will be generated after further erosion. For the anti-corrosion measures of marine concrete, in addition to continuously improving the corrosion resistance of the concrete itself, the outer coating protection technology has also been very popular. Existing polymer cement waterproof coatings have been widely used because of their many excellent properties, and single polymer cement waterproof coatings are mainly used. Studies have found that a single polymer cement waterproof coating has outstanding pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D175/04C09D111/02C09D123/08C09D163/00C09D125/14C09D109/08C09D5/08C09D7/61C09D7/63
CPCC09D5/08C09D109/08C09D111/02C09D123/0853C09D125/14C09D133/04C09D143/04C09D163/00C09D175/04C09D7/61C09D7/63C08L75/04C08K13/02C08K3/36C08K3/34C08K5/544C08L33/04C08L11/02C08L23/0853
Inventor 谭晓明王世闰张荣堂刘杰胜付弯弯张浩涂妮张传成
Owner WUHAN POLYTECHNIC UNIVERSITY
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