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Environment-friendly heat-resistant waterborne polyurethane coating

A polyurethane coating and water-based polyurethane technology, applied in the coating field, can solve the problems of poor aging resistance, heat resistance, poor water resistance, poor water resistance, etc., and achieve long service life, good heat resistance, and strong water resistance. Effect

Inactive Publication Date: 2015-01-21
WUHU SHUANGBAO BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, water-based polyurethane also has the following disadvantages: such as low molecular weight, low gloss, low hardness, poor aging resistance, and poor water resistance due to the introduction of hydrophilic groups and the use of water as a dispersion system. content is low, thus limiting its scope of application
[0003] The existing water-based polyurethane coatings have poor heat resistance and water resistance, and low hardness cannot meet the requirements of the society, and further research and improvement are needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The environment-friendly hot water resistant polyurethane coating of the present invention, its raw material comprises the following components by weight parts: 50 parts of modified water-based polyurethane, 30 parts of water-based acrylic resin, 10 parts of epoxy resin, 5 parts of aliphatic polyisocyanate, organic modification 30 parts of natural clay, 8 parts of modified nano-cellulose, 20 parts of silk fibroin, 3 parts of nano-titanium dioxide, 18 parts of nano-montmorillonite, 5 parts of vegetable oil, 1.8 parts of glycerin, 0.5 parts of ethylene glycol propyl ether, propylene glycol 1.9 parts of monoether, 0 parts of pentaerythritol, 3 parts of silicone microbeads, and 3 parts of modified carbon nanotubes;

[0020] Wherein, the modified water-based polyurethane is prepared according to the following process: under the protection of nitrogen, 40 parts of toluene diisocyanate and 2 parts of glucose are sequentially added to 30 parts of polypropylene glycol in parts by...

Embodiment 2

[0022] The environmental protection hot water resistant polyurethane coating of the present invention, its raw material comprises the following components by weight part: 80 parts of modified water-based polyurethane, 10 parts of water-based acrylic resin, 10 parts of epoxy resin, 8 parts of aliphatic polyisocyanate, organic modification 15 parts of natural clay, 20 parts of modified nano-cellulose, 5 parts of silk fibroin, 8 parts of nano-titanium dioxide, 10 parts of nano-montmorillonite, 8 parts of castor oil, 1 part of glycerol, 1.8 parts of ethylene glycol propyl ether, 0.8 parts of propylene glycol monoether, 1.5 parts of pentaerythritol, 1 part of silicone microbeads, and 6 parts of modified carbon nanotubes;

[0023] Wherein, the organically modified clay is an aminosilane coupling agent modified organoclay, and the aminosilane coupling agent is N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane, N-β-(aminoethyl)-γ-aminopropylmethyl triethoxysilane weight parts are co...

Embodiment 3

[0026] The environment-friendly hot water resistant polyurethane coating of the present invention, its raw material comprises the following components by weight part: 62 parts of modified water-based polyurethane, 20.5 parts of water-based acrylic resin, 17.5 parts of epoxy resin, 7.1 parts of aliphatic polyisocyanate, organic modification 19.6 parts of clay, 17.9 parts of modified nano-cellulose, 14 parts of silk fibroin, 5.3 parts of nano-titanium dioxide, 14.6 parts of nano-montmorillonite, 3.4 parts of rapeseed oil, 4 parts of linseed oil, 1.56 parts of glycerol, ethylene glycol 1.4 parts of alcohol propyl ether, 1.67 parts of propylene glycol monoether, 0.94 parts of pentaerythritol, 1.5 parts of silicone microbeads, and 5.3 parts of modified carbon nanotubes;

[0027] Wherein, the modifying agent of the organically modified clay is γ-aminopropyltrimethoxysilane;

[0028] The modified water-based polyurethane is prepared according to the following process: under the prote...

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PUM

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Abstract

The invention discloses an environment-friendly heat-resistant waterborne polyurethane coating. The raw materials of the waterborne polyurethane coating comprise the following components in parts by weight: 50-80 parts of modified waterborne polyurethane, 10-30 parts of waterborne acrylic resin, 10-20 parts of epoxy resin, 5-8 parts of aliphatic polyisocyanate, 15-30 parts of organically modified clay, 8-20 parts of modified nano-cellulose, 5-20 parts of silk fibroin, 3-8 parts of nanometer titanium dioxide, 10-18 parts of nanometer montmorillonite, 5-8 parts of vegetable oil, 1-1.8 parts of glycerol, 0.5-1.8 parts of ethylene glycol propyl ether, 0.8-1.9 parts of propylene glycol monomethyl ether, 0-1.5 parts of pentaerythritol, 1-3 parts of organosilicone microspheres and 3-6 parts of modified carbon nanotubes. The environment-friendly heat-resistant waterborne polyurethane coating disclosed by the invention has the advantages of good heat resistance, strong water resistance, high hardness and long service life.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an environmentally friendly hot water resistant polyurethane coating. Background technique [0002] Polyurethane refers to a general term for a class of polymers containing urethane bonds in the main chain of the molecule, and is usually produced by the polyaddition reaction of isocyanate and polyol. Water-based polyurethane uses water as a dispersant to replace the organic solvent in solvent-based polyurethane, which is not only environmentally friendly, non-toxic and low energy consumption, but also because the physical and chemical structure of the molecular chain remains unchanged. Compared with solvent-based polyurethane, water-based polyurethane has the following advantages: Water is used as the dispersion medium and contains no or only a small amount of organic solvents; acetone with low boiling point and low toxicity is used as the solvent in the reaction process, which ...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D133/00C09D163/00C09D101/08C09D189/00C09D7/12C08G18/66C08G18/48C08G18/32C08G18/34C08G18/38
CPCC09D175/08C08G18/0823C08G18/3206C08G18/3228C08G18/348C08G18/6674C08G18/6685C08G18/6692C08K2201/011C08L2205/035C09D7/40C08L33/00C08L63/00C08L1/02C08L89/00C08L91/00C08K13/06C08K9/00C08K3/346C08K2003/2237C08K5/053C08K7/24
Inventor 胡昌悌
Owner WUHU SHUANGBAO BUILDING MATERIAL
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