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Self-healing polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof and self-repair technology, applied in the field of architectural waterproof coatings, can solve the problems that limit the improvement and perfection of waterproof engineering quality, achieve good self-repair effect, simple process, and improve utility

Active Publication Date: 2018-02-16
浙江鲁班建筑防水有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems in these material properties and the lack of technology limit the improvement and improvement of the quality of waterproofing projects. It is urgent to propose a complete solution to solve the above problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The proportion of each component of the raw materials of the intelligent self-repairing polyurethane waterproof coating of the present invention is as follows:

[0031] One-component moisture-curing polyurethane liquid waterproof coating 85%

[0032] Microcapsule material 15%

[0033] The preparation method of the above-mentioned intelligent self-repairing polyurethane waterproof coating is as follows:

[0034] 1) Dissolve ethyl cellulose in 4 times water at 70°C and stir to make it into a gel state;

[0035] 2) Mix oil-soluble polyurethane grouting fluid for engineering with a weight ratio of 1:3 and emulsifier petroleum sulfonate, and emulsify with an emulsifier to form an emulsion;

[0036] 3) Add the emulsion with a mass ratio of 1:1 into the ethyl cellulose aqueous solution for rapid stirring, and lower the temperature to room temperature;

[0037] 4) Put the mixture into the spray dryer for heating to form a film on the surface;

[0038] 5) Add it to the one-c...

Embodiment 2

[0045] The ratio of each component of the raw materials of the intelligent self-repairing polyurethane waterproof coating that can be used in the present invention is as follows:

[0046] One-component water-curing polyurethane waterproof coating 87%

[0047] Microcapsule material 13%

[0048] The preparation method of the above-mentioned intelligent self-repairing polyurethane waterproof coating is as follows:

[0049] 1) Dissolve ethyl cellulose in 3 times of water at 70°C and stir to make it into a gel state;

[0050] 2) Mix oil-soluble polyurethane grouting liquid for engineering with a weight ratio of 1:2 and emulsifier petroleum sulfonate, and emulsify with an emulsifier to form an emulsion;

[0051] 3) Add the emulsion with a mass ratio of 1:1 into the ethyl cellulose aqueous solution for rapid stirring, and lower the temperature to room temperature;

[0052]4) Put the mixture into the spray dryer for heating to form a film on the surface;

[0053] 5) Add it to the ...

Embodiment 3

[0059] The ratio of each component of the raw materials of the intelligent self-repairing polyurethane waterproof coating that can be used in the present invention is as follows:

[0060] Two-component polyurethane waterproof coating 85%

[0061] Microcapsule material 15%

[0062] The preparation method of the above-mentioned intelligent self-repairing polyurethane waterproof coating is as follows:

[0063] 1) Dissolve ethyl cellulose in 5 times water at 70°C and stir to make it into a gel state;

[0064] 2) Mix oil-soluble polyurethane grouting fluid for engineering with a weight ratio of 1:4 and emulsifier petroleum sulfonate, and emulsify with an emulsifier to form an emulsion;

[0065] 3) Add the emulsion with a mass ratio of 1:1 into the ethyl cellulose aqueous solution for rapid stirring, and lower the temperature to room temperature;

[0066] 4) Put the mixture into the spray dryer for heating to form a film on the surface;

[0067] 5) Add to component A of the poly...

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Abstract

The invention discloses a self-repaired polyurethane waterproof coating and a preparation method thereof. The self-repaired polyurethane waterproof coating is a one-component or two-component coating and consists of 70-90% of polyurethane waterproof material and 10-30% of microcapsule material both by weight. In the invention, by adopting the technology, the base layer cracking and consequent pull crack of the waterproof layer are avoided, self-repairing is realized, and harsh requirements on the base layer are reduced; a perfect self-repairing effect is realized on the small cracks of the building concrete base layer caused by heat expansion and cold contraction and cement hydration, the efficacy of the waterproof material is greatly enhanced, and the self-repairing idea opens up a new thought for the building waterproofing; and moreover, the technology is simple and convenient, rapid construction can be realized, maintenance is not needed, the work efficiency is high, and the technology is the future development direction of building waterproofing.

Description

technical field [0001] The invention belongs to the field of architectural waterproof coatings, in particular to a self-repairing polyurethane waterproof coating and a preparation method thereof. Background technique [0002] Polymer waterproof coating is an excellent material for waterproofing. The currently used polymer coatings are water-emulsified emulsion-based water-emulsion coatings. It uses cold construction, but its solid content is low, generally not exceeding (60-70%), The thickness of each application is limited by the curing conditions. It cannot be very thick. The film needs to be applied multiple times. Under humid conditions, the water in the emulsion cannot be volatilized, so it cannot be cured. very inconvenient. [0003] Modified asphalt coils such as SBS and APP coils are currently popular in the market. It needs a flame spray gun to carry out on-site surface hot melting, requires an open flame, has high technical requirements, and is easy to cause the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D101/28
CPCC08L2205/025C08L2205/03C09D175/04C08L75/04C08L1/28
Inventor 项增晔杨杨项晓睿徐丹阳周振哲魏红超
Owner 浙江鲁班建筑防水有限公司
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