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Waterproof and moisture permeable coating

A waterproof and moisture-permeable coating technology, which is applied in the field of waterproof coatings and waterproof and moisture-permeable coatings. It can solve the problems of environmental and human hazards, poor aging resistance, and low transmittance, and achieve environmental and human harmlessness and aging resistance. Strong performance and good stain resistance

Active Publication Date: 2016-03-23
WEIFANG HONGYUAN WATERPROOF MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are also some coatings with waterproof and moisture-permeable functions on the market now, but these coatings contain a large amount of harmful substances such as benzene compounds, which are harmful to the environment and the human body; and the existing waterproof and moisture-permeable coatings have many defects; Either the transmittance is very low and the effect is not ideal; moreover, the moisture permeability leads to a serious decrease in its bonding performance
[0005] The existing technology has the following defects: (1) water vapor cannot pass through the coating, or the transmittance is very low; (2) the bonding performance with the cement base surface is not strong; (3) the water resistance is not strong enough; (4) the aging resistance Poor; (5) Poor stain resistance and wear resistance; (6) Contains volatile harmful substances, not environmentally friendly

Method used

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  • Waterproof and moisture permeable coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 A waterproof and moisture-permeable coating

[0035] Described coating comprises primer and surface coating;

[0036] (1) The mass composition of the surface coating is: 40 parts of water-based fluorocarbon emulsion, 15 parts of filler, 30 parts of water-based polyurethane, 1 part of defoamer, and 0.5 part of dispersant;

[0037] The water-based fluorocarbon resin is Guangdong Pine Chemical PTFE emulsion;

[0038] The filler is DuPont rutile titanium dioxide;

[0039] The water-based polyurethane is Jining Huakai Resin Co., Ltd. HK718;

[0040] Described defoamer is BASF A10;

[0041] The model of the dispersant is BYK180.

[0042] (2) Primer coating includes A component and B component;

[0043] The mass ratio of component A and component B is: component A: component B = 14:1; before using the primer, mix component A and component B according to the mass ratio.

[0044] The parts by mass of the A component of the primer are composed of:

[0045] 10 pa...

Embodiment 2

[0051] Example 2 A waterproof and moisture-permeable coating

[0052] Described coating comprises primer and surface coating;

[0053] (1) The mass composition of the surface coating is: 50 parts of water-based fluorocarbon emulsion, 13 parts of filler, 20 parts of water-based polyurethane, 1 part of defoamer, and 0.5 parts of dispersant;

[0054] The water-based fluorocarbon resin is Guangdong Pine Chemical PTFE emulsion;

[0055] The filler is DuPont rutile titanium dioxide;

[0056] The water-based polyurethane is Jining Huakai Resin Co., Ltd. HK718;

[0057] Described defoamer is BASF A10;

[0058] The dispersant is BYK180.

[0059] (2) Primer coating includes A component and B component;

[0060] The mass ratio of component A and component B is: component A: component B = 13:1; before using the primer, mix component A and component B according to the mass ratio.

[0061] The parts by mass of the A component of the primer are composed of:

[0062] 8 parts of ethyle...

Embodiment 3

[0068] Example 3 A waterproof and moisture-permeable coating

[0069] Described coating comprises primer and surface coating;

[0070] (1) The mass composition of the surface coating is: 45 parts of water-based fluorocarbon emulsion, 10 parts of filler, 30 parts of water-based polyurethane, 1 part of defoamer, and 0.5 parts of dispersant;

[0071] The water-based fluorocarbon resin is Guangdong Pine Chemical PTFE emulsion;

[0072] The filler is DuPont rutile titanium dioxide;

[0073]The water-based polyurethane is Jining Huakai Resin Co., Ltd. HK718;

[0074] Described defoamer is BASF A10;

[0075] The dispersant is BYK180.

[0076] (2) Primer coating includes A component and B component;

[0077] The mass ratio of component A and component B is: component A: component B = 15:1; before using the primer, mix component A and component B according to the mass ratio.

[0078] The parts by mass of the A component of the primer are composed of:

[0079] 10 parts of ethyle...

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Abstract

The invention provides a waterproof and moisture permeable coating. The coating comprises a bottom layer coating and a surface layer coating, wherein the bottom layer coating comprises a component A and a component B. The component A is prepared from the following raw material components: ethylene-vinyl acetate copolymer emulsion, reactive polysiloxane, waterborne polyurethane, sodium polyacrylate, hydroxyethylmethylcellulose, silica sol, an antifoaming agent and a sterilizing agent. The component B of the bottom layer coating is an isocyanate curing agent. The surface layer coating is prepared from the following components: water-based fluorine carbon emulsion, packing, waterborne polyurethane, an antifoaming agent and a dispersing agent. The coating provided by the invention can block liquid water and moisture can penetrates through the coating.

Description

technical field [0001] The invention relates to a waterproof coating, in particular to a waterproof and moisture-permeable coating, which belongs to the field of architectural coatings. technical background [0002] The harm of external moisture penetration to buildings is obvious. Our traditional waterproof concept is to cover a layer of airtight waterproof layer on the outside of the insulation layer. However, the temperature and humidity inside and outside the building are quite different, which will cause indoor moisture " "Pile up" on the inner side of the waterproof layer, when it is cold and condensed, it will inevitably lead to a decrease in the performance of the insulation layer and a decrease in the adhesion of the waterproof layer, which will affect the life of the building. [0003] With the rapid development of the construction industry, the contradiction between the waterproof and moisture permeability of materials has become more and more acute. Research on ...

Claims

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Application Information

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IPC IPC(8): C09D127/18C09D175/04C09D7/12C09D5/16
CPCC08L2205/035C09D5/1675C09D7/65C09D127/18C09D175/04C08L75/04C08K2003/2241C08L23/0853C08L1/284C08L33/02C08K3/36
Inventor 王威徐桂明郑家玉曹海涛张鹏飞
Owner WEIFANG HONGYUAN WATERPROOF MATERIAL
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