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Water-tolerant and ageing-resistant waterborne polyurethane coating

A water-based polyurethane and aging-resistant technology, applied in the field of coatings, can solve the problems that water-based polyurethane coatings cannot meet the requirements of society in terms of water resistance, curing time and aging resistance, so as to shorten curing time, improve water resistance, and improve aging resistance. Effect

Inactive Publication Date: 2015-05-13
WUHU SHUANGBAO BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water resistance, curing time and aging resistance of the current waterborne polyurethane coatings cannot meet the requirements of the society and need to be modified

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The water-resistant and anti-aging water-based polyurethane coating of the present invention, its raw material comprises the following components by weight: 60 parts of water-based fluorine-containing polyurethane-acrylate, 10 parts of epoxy resin, 10 parts of hydroxyl-terminated polybutadiene liquid rubber, nano-carbonic acid 5 parts of calcium, 12 parts of hollow glass microspheres, 3 parts of nano-titanium dioxide, 3 parts of ethylene glycol butyl ether, 1 part of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 20 parts of ionized water, 3.5 parts of curing agent, 2 parts of coupling agent, 3.5 parts of auxiliary agent;

[0018] The water-based fluorine-containing polyurethane-acrylate is prepared according to the following process: under the protection of nitrogen, 30 parts of polycarbonate diol, 10 parts of toluene diisocyanate, 30 parts of butyl methacrylate, 20 parts of acrylic acid Isooctyl ester, 6 parts of dimethylol butyric acid, 10 parts of glycerol, 10 par...

Embodiment 2

[0020] The water-resistant and aging-resistant water-based polyurethane coating of the present invention, its raw material comprises the following components by weight: 85 parts of water-based fluorine-containing polyurethane-acrylate, 3 parts of epoxy resin, 2 parts of hydroxyl-terminated polybutadiene liquid rubber, nano-carbonic acid 12 parts of calcium, 3 parts of hollow glass microspheres, 10 parts of nano-titanium dioxide, 2 parts of ethylene glycol butyl ether, 3 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 45 parts of ionized water, 2 parts of curing agent, 4.5 parts of coupling agent, 1 part of auxiliary agent;

[0021] Wherein, the auxiliary agent is a combination of a leveling agent and a thickener in a ratio of 1:3 parts by weight; the molecular weight of the polycarbonate diol is 1500;

[0022] The water-based fluorine-containing polyurethane-acrylate is prepared according to the following process: under the protection of nitrogen, 60 parts of polycarbo...

Embodiment 3

[0024] The water-resistant and anti-aging water-based polyurethane coating of the present invention, its raw material comprises the following components by weight: 77 parts of water-based fluorine-containing polyurethane-acrylate, 7.8 parts of epoxy resin, 8.6 parts of hydroxyl-terminated polybutadiene liquid rubber, nano-carbonic acid 8.5 parts of calcium, 9.5 parts of hollow glass microspheres, 7.3 parts of nano-titanium dioxide, 2.65 parts of ethylene glycol butyl ether, 2.8 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 43.7 parts of ionized water, 3.2 parts of curing agent, 4.3 parts of coupling agent, 1.6 parts of auxiliary agent;

[0025] Wherein, the auxiliary agent is a wetting agent; the molecular weight of the polycarbonate diol is 1000;

[0026] The water-based fluorine-containing polyurethane-acrylate is prepared according to the following process: under the protection of nitrogen, 39 parts of polycarbonate diol, 8.2 parts of toluene diisocyanate, 36 pa...

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Abstract

The invention discloses a water-tolerant and ageing-resistant waterborne polyurethane coating which comprises the following components in parts by weight: 60-85 parts of waterborne fluorinated polyurethane-acrylate, 3-10 parts of epoxy resin, 2-10 parts of hydroxyl-terminated polybutadiene liquid rubber, 5-12 parts of nano calcium carbonate, 3-12 parts of hollow glass microspheres, 3-10 parts of nano titanium dioxide, 2-3 parts of butyl glycol ether, 1-3 parts of 2,2,4-trimethyl-1,3-pentanediolmono(2-methylpropanoate), 20-45 parts of deionized water, 2-3.5 parts of a curing agent, 2-4.5 parts of a coupling agent, and 1-3.5 parts of an additive. The water-tolerant and ageing-resistant waterborne polyurethane coating disclosed by the invention is good in water tolerance and ageing resistance, short in curing time, and excellent in mechanical properties.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-resistant and aging-resistant water-based polyurethane coating. Background technique [0002] With the development of society and the gradual deterioration of the environment, paints containing VOCs are gradually being eliminated from the market and replaced by water-based paints. Water-based polyurethane has the characteristics of good toughness, high temperature resistance, low temperature resistance, and excellent UV resistance, and does not have the disadvantages of being volatile, flammable, explosive, and toxic. It has become a film-forming substance that is widely used in coatings. However, the water resistance, curing time and aging resistance of the current waterborne polyurethane coatings cannot meet the requirements of the society and need to be modified. Contents of the invention [0003] The invention provides a water-resistant and aging-resistant waterbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D151/08C09D7/12C08F283/00C08F220/32C08F220/58C08G18/63C08G18/67C08G18/42
CPCC09D7/61C09D7/63C09D7/70C09D151/08C08F283/008C08G18/0823C08G18/3206C08G18/348C08G18/44C08G18/6633C08G18/672C08G18/7614C08K2201/011C08L2205/03C08L2201/08C08L63/00C08L9/00C08K13/04C08K7/28C08K2003/265C08K2003/2237C08F220/325C08F220/58
Inventor 胡昌悌
Owner WUHU SHUANGBAO BUILDING MATERIAL
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