Waterproof paint directly used for water seepage surface

A waterproof coating, direct technology, applied in the direction of antifouling/underwater coating, epoxy resin coating, coating, etc., can solve the problem of reduced adhesion of the coating film, and achieve the effect of simple construction method and strong adhesion

Inactive Publication Date: 2005-09-21
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This special reactive component can convert water into a polyurethane crosslinking agent, and the introduction of hydroxyl groups in component B increases the affinity between the coating and the base layer, so the coating does not foam on the wet surface. It has strong adhesion, but the adhesion of the coating film is significantly reduced when it is applied on the water seepage surface
In addition, other waterproof coatings such as cyanide also have the same problem.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] components

[0026] Curing agent component

[0027] components

[0028] The mass ratio between the substrate component and the curing agent component is 3:1

[0029] First weigh 120 grams of polytetrahydrofuran ether glycol with a molecular weight of 1000 and add it to a 500-milliliter four-port reactor equipped with a stirrer, a thermometer, a nitrogen valve, and a vacuum pump connected to a decompression, heat to 100 ° C, vacuumize and dehydrate, and cool to Add 44 grams of toluene-2,4-diisocyanate dropwise at 50-55°C, and react for 3-4 hours under an inert atmosphere to obtain the required polyurethane for future use.

[0030] Add 5 times the weight of epoxy resin to the reactor equipped with the above polyurethane, heat to 80°C and react for about 30 minutes to obtain modified epoxy resin. Gradually add cement powder, silicon dioxide, and calcium carbonate to the modified epoxy resin according to the proportion, and stir evenly to obtain matrix ...

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PUM

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Abstract

The present invention discloses one kind of waterproof paint capable of painted directly onto water seeping concrete surface. The paint contains base material component including epoxy resin and curing agent component containing amine compound. The paint may be also applied directly in water and has simple application process, strong adhesion in the interface, high seepage resistance, less environmental pollution and other advantages.

Description

technical field [0001] The invention relates to a waterproof paint, in particular to a paint that can be directly cured on a water-permeable concrete surface. Background technique [0002] Current wet surface waterproof coatings are generally only suitable for building concrete bases with a moisture content of less than 8%. However, in practical applications, the construction environment is very humid and even seeps in many cases. In the case where the surface of the base layer is covered with water molecules to form an isolation layer, the polymer material cannot take root on the base layer or generate strong attraction with the solid molecules of the base layer, and it is impossible to have strong adhesion, and it is bound to be easy to peel and peel off, thus losing the waterproof function . [0003] The fifth issue of volume 23 of "Shanghai Chemical Industry" once reported the polyurethane waterproof coating that can be applied to the concrete base in the wet saturated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/16C09D163/00
Inventor 王得宁廖波
Owner EAST CHINA UNIV OF SCI & TECH
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