High-viscosity water-based asphalt waterproof coating and preparation method thereof

A bituminous waterproof coating, water-based technology, applied in the direction of bitumen coating, antifouling/underwater coating, chloroprene homopolymer coating, etc., can solve the problem that the tensile strength and elongation at break of water-based bitumen coatings are not ideal for low temperature flexibility. , poor compatibility of asphalt, etc., to achieve the effect of high bond strength, increased bond strength, tensile strength and elongation at break

Active Publication Date: 2021-11-19
河北三棵树涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research results show that the acrylic emulsion can significantly improve the bonding strength and anti-foaming ability of water-based asphalt coatings. The improvement of the effect is not satisfactory

Method used

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  • High-viscosity water-based asphalt waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of high-viscosity water-based asphalt waterproof coating is as follows: 5 parts of water and 10 parts of acrylic acid emulsion are added to the container and stirred evenly, then 1 part of defoamer, 5 parts of wetting agent and 1 part of dispersant are added. Mix evenly at high speed, then add 10 parts of filler, stir at 1000rpm for 20min; at 700rpm, add 50 parts of anionic emulsified asphalt, 5 parts of neoprene latex, and after stirring for 10min, add 1 part of thickener, 0.5 1 part bactericide, 1 part co-solvent, and continue to stir for 5 minutes. The thickener is compounded by water-based associative polyurethane, silicone gel and polyhydroxy polyacrylamide.

[0034] The above thickener is obtained by mixing water-based associative polyurethane and silicone gel evenly, then adding polyhydroxy polyacrylamide at 40°C, and stirring for 60 minutes. The mass ratio of the water-based associative polyurethane, silicone gel and polyhydroxy polyacrylam...

Embodiment 2

[0043] A preparation method of high-viscosity water-based asphalt waterproof coating is as follows: 15 parts of water and 30 parts of acrylic emulsion are added to the container and stirred evenly, then 2 parts of defoamer, 3 parts of wetting agent and 3 parts of dispersant are added, and the mixture is heated at 700rpm Mix evenly at high speed, then add 30 parts of filler, stir at 1100rpm for 30min; at 650rpm, add 70 parts of anionic emulsified asphalt, 25 parts of chloroprene latex, and after stirring for 5min, add 3 parts of thickener, 1 1 part bactericide, 2 parts co-solvent, and continue to stir for 10 minutes. The thickener is compounded by water-based associative polyurethane, silicone gel and polyhydroxy polyacrylamide.

[0044] The above-mentioned thickener is obtained by mixing water-based associative polyurethane and silicone gel evenly, then adding polyhydroxy polyacrylamide at 50°C, and stirring for 30 minutes. The mass ratio of the water-based associative polyur...

Embodiment 3

[0053] A preparation method of high-viscosity water-based asphalt waterproof coating is as follows: add 10 parts of water and 15 parts of acrylic acid emulsion into a container and stir evenly, then add 2 parts of defoamer, 4 parts of wetting agent, and 2 parts of dispersing agent. Mix evenly at high speed, then add 20 parts of filler, stir at 1200rpm for 40 minutes; at 800rpm, add 60 parts of anionic emulsified asphalt, 20 parts of chloroprene latex, and stir for 10 minutes, then add 2 parts of thickener, 1 1 part bactericide, 2 parts co-solvent, and continue to stir for 5 minutes. The thickener is compounded by water-based associative polyurethane, silicone gel and polyhydroxy polyacrylamide.

[0054] The above-mentioned thickener is obtained by mixing water-based associative polyurethane and silicone gel evenly, then adding polyhydroxy polyacrylamide at 50°C, and stirring for 45 minutes. The mass ratio of the water-based associative polyurethane, silicone gel and polyhydro...

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Abstract

The invention relates to a high-viscosity water-based asphalt waterproof coating and a preparation method thereof. The high-viscosity water-based asphalt waterproof coating comprises the following raw materials in parts by weight: 50-70 parts of anionic emulsified asphalt, 10-30 parts of an acrylic emulsion, 5-25 parts of neoprene latex, 1-2 parts of a defoaming agent, 1-3 parts of a thickening agent, 0.5-1 part of a sterilizing agent, 3-5 parts of a wetting agent, 1-3 parts of a dispersing agent, 10-30 parts of filler, 1-2 parts of a cosolvent and 5-15 parts of water. The thickening agent is prepared from water-based associated polyurethane, silica gel and polyhydroxy polyacrylamide according to a mass ratio of 1:(0.45-0.68):(0.6-0.9). The coating has high bonding strength, high tensile strength, high elongation rate and excellent low-temperature flexibility, and solves the problem of blistering during construction.

Description

technical field [0001] The invention belongs to the technical field of waterproof coatings, in particular to a high-viscosity water-based asphalt waterproof coating and a preparation method thereof. Background technique [0002] With the development of road, bridge and construction engineering, asphalt is widely used in road and bridge engineering and waterproofing because of its excellent waterproof and cohesive properties. Water-based asphalt waterproof coating is an oil-in-water emulsion formed by dispersing asphalt in water through high-shear mechanical force under the action of an emulsifier after hot-melting asphalt. This kind of emulsified asphalt obtained only by asphalt emulsification cannot be used alone as a waterproof material due to its poor mechanical properties and high temperature sensitivity, and can only be used as a general base treatment agent. [0003] In recent years, people have improved the performance of water-based asphalt coatings by adding rubber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D195/00C09D133/00C09D111/02C09D5/14C09D7/44C09D7/61C09D7/63C09D7/65
CPCC09D195/005C09D5/14C09D7/44C09D7/61C09D7/63C09D7/65C08K2003/265C08K2003/2241C08L33/00C08L11/02C08L75/04C08L83/04C08L33/24C08L87/005C08L71/02C08L23/16C08K5/06C08K3/26C08K13/02C08L23/0853C08K3/04C08K3/30C08K5/1535C08K3/22
Inventor 廖丽杨洁薛文军李小亮张文龙
Owner 河北三棵树涂料有限公司
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