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Special waterproof anti-corrosion high polymer spraying material for concrete and preparation method of special waterproof anti-corrosion high polymer spraying material

A polymer and concrete technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of weak aging resistance, coating damage, poor water resistance, etc., achieve good protection effect, improve compactness and strength, comprehensive effect Good results

Inactive Publication Date: 2021-08-24
俞家欢
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating is easily damaged in harsh environments
The polymer waterproof coating can effectively prevent water and other substances from entering the interior of the concrete and avoid contact between steel bars and water. However, in an environment exposed to water for a long time, there are still problems of poor water resistance and weak aging resistance.

Method used

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  • Special waterproof anti-corrosion high polymer spraying material for concrete and preparation method of special waterproof anti-corrosion high polymer spraying material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 5.1 parts of polyacrylamide, 23.2 parts of tris(hydroxymethyl)nitromethane, 18 parts of sodium nitrite, 5 parts of ammonium dihydrogen phosphate, 7 parts of magnesium oxide powder, and 2 parts of borax into the mixing drum of the mixer, Stir at a constant speed for 5-10 minutes until the three base materials are evenly stirred. Add 11.0 parts of ionic water into the mixing drum, slowly, and keep stirring for 5-10 minutes after all the water is added. Add 5.2 parts of defoamer and 9.7 parts of natural cotton fiber into the mixing drum in turn, and continue stirring at a constant speed for 5 to 10 minutes. Continuously stir 42.5 parts of stone powder, 19.4 parts of silicone acrylic, 7.4 parts of acrylic acid, and 8.8 parts of BA-510TS flexible emulsion at a constant speed for 5 to 10 minutes. Finally, add 2.5 parts of waterproofing agent. The bonding strength is 2.8MPa, the effective water retention rate is 90%, and the drying time is 3.2h.

Embodiment 2

[0033] Add 7.2 parts of polyacrylamide, 23.2 parts of tris(hydroxymethyl)nitromethane, 18 parts of sodium nitrite, 5 parts of ammonium dihydrogen phosphate, 7 parts of magnesium oxide powder, and 2 parts of borax into the mixing drum of the mixer, Stir at a constant speed for 5-10 minutes until the three base materials are evenly stirred. Add 11.0 parts of ionic water into the mixing drum, slowly, and keep stirring for 5-10 minutes after all the water is added. Add 5.2 parts of defoamer and 11.1 parts of natural cotton fiber into the mixing drum in turn, and continue stirring at a constant speed for 5 to 10 minutes. Continue to stir 37.3 parts of stone powder, 19.4 parts of silicone acrylic, 7.4 parts of acrylic acid, and 8.8 parts of BA-510TS flexible emulsion at a constant speed for 5 to 10 minutes. Finally, add 2.5 parts of waterproofing agent. The bonding strength is 3MPa, the effective water retention rate is 86%, and the drying time is 3h.

Embodiment 3

[0035] Add 8.6 parts of polyacrylamide, 23.2 parts of tris(hydroxymethyl)nitromethane, 18 parts of sodium nitrite, 5 parts of ammonium dihydrogen phosphate, 7 parts of magnesium oxide powder, and 2 parts of borax into the mixing drum of the mixer. Stir at a constant speed for 5-10 minutes until the three base materials are evenly stirred. Add 11.0 parts of ionic water into the mixing drum, slowly, and keep stirring for 5-10 minutes after all the water is added. Add 5.2 parts of defoamer and 12.6 parts of natural cotton fiber into the mixing drum in turn, and continue stirring at a constant speed for 5 to 10 minutes. Continue to stir 33.8 parts of stone powder, 19.4 parts of silicon acrylic, 7.4 parts of acrylic acid, and 8.8 parts of BA-510TS flexible emulsion at a constant speed for 5 to 10 minutes. Finally, add 2.5 parts of waterproofing agent. The bonding strength is 2.7MPa, the effective water retention rate is 88%, and the drying time is 3.3h.

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Abstract

The invention belongs to the field of anti-corrosion materials, and particularly relates to a special waterproof anti-corrosion high polymer spraying material for concrete and a preparation method of the special waterproof anti-corrosion high polymer spraying material. The special waterproof anti-corrosion high polymer spraying material for concrete is prepared from the following raw materials in parts by mass: 10.0 to 12.0 parts of ionized water, 5.1 to 8.6 parts of polyacrylamide, 20.2 to 25.8 parts of tris(hydroxymethyl)nitromethane, 4.4 to 7.8 parts of defoaming agent, 9.7 to 12.6 parts of natural cotton fiber, 17 to 22 parts of an anti-freezing agent, 33.8 to 42.5 parts of stone powder, 18.9 to 22.1 parts of silicone acrylic, 5.5 to 11.8 parts of acrylic acid, 7.6 to 9.4 parts of BA-51TS flexible emulsion, 2.0 to 3.0 parts of a waterproof agent, 3 to 5 parts of ammonium dihydrogen phosphate, 5 to 7 parts of magnesium oxide powder and 1 to 2 parts of borax. The spraying material has the two characteristics of water resistance and corrosion resistance, the comprehensive effect is good, the production benefit is high, due to the addition of the high polymer, the compactness and strength of the material are improved, the impermeability, corrosion resistance and wear resistance of the spraying material are correspondingly improved, the spraying material is well bonded with a surface layer material after being sprayed on the surface of concrete, and the spraying material has a good protection effect.

Description

technical field [0001] The invention belongs to the field of anti-corrosion materials, and in particular relates to a special waterproof and anti-corrosion polymer spraying material for concrete and a preparation method thereof. [0002] technical background [0003] For a long time, as one of the most commonly used structural forms in the design of civil engineering structures, concrete structures have been widely used. Domestic and foreign data show that if the concrete structure is corroded, it will directly endanger the safety and life of the building structure. Corrosion of concrete structures will bring huge economic losses. Therefore, research on the corrosion of concrete structures has become an important issue of concern in the world today. Concrete is mainly corroded by water, acid, alkali, salt and other factors. These corrosion sources exist in the form of aqueous solution, penetrate into the interior of the concrete, and gradually corrode the concrete. The char...

Claims

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Application Information

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IPC IPC(8): C09D4/02C09D4/06C09D7/61C09D7/63C09D5/08
CPCC09D4/06C09D7/61C09D7/63C09D5/08
Inventor 俞家欢苏鹤霞原素文李俊敏马宏兵刘爱军蒋文竣刘佳源杨东方刘继诚王鹏远张浩
Owner 俞家欢
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