A kind of tetraacicular zinc oxide whisker modified polyurethane resin coating and preparation method thereof

A technology of four-needle zinc oxide and polyurethane resin, which is applied in the field of coatings, can solve problems such as cracking of paint films, poor compatibility, and low surface energy, and achieve the effects of reducing surface energy, improving water resistance, and improving the degree of microphase separation

Active Publication Date: 2021-04-02
无锡新而奇化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the above-mentioned patent, the tetrapod zinc oxide whisker powder is directly added to the aqueous polyurethane dispersion, but since the tetrapod zinc oxide whisker has a three-dimensional tetrapod structure, it has extremely high surface energy, while the aqueous polyurethane dispersion Because of low surface energy, the compatibility of the two is poor after adding, which may lead to cracking of the paint film

Method used

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  • A kind of tetraacicular zinc oxide whisker modified polyurethane resin coating and preparation method thereof
  • A kind of tetraacicular zinc oxide whisker modified polyurethane resin coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A four-needle zinc oxide whisker modified polyurethane resin coating, prepared from the following raw materials in parts by weight: 25 parts of polyether polyol, 4 parts of dimethylol propionic acid, 45 parts of isophorone diisocyanate , 12 parts of toluene-2,4-diisocyanate, 0.6 part of dibutyltin dilaurate, 2 parts of dimethylaminoethanol, 4 parts of hydrogenated modified castor oil, polyacrylate pre-coated tetrapod-shaped zinc oxide crystal 15 parts of whiskers, 3 parts of trimethylolpropane, 5 parts of butyl acetate, 12 parts of ethanol, 4 parts of anti-sedimentation agent, nano-Al 2 o 3 20 parts, 140 parts of water.

[0026] Among them, the anti-settling agent is obtained by mixing modified organic bentonite and fumed silica at a mass ratio of 1:1.

[0027] The preparation method of polyacrylate pre-coated tetraacicular zinc oxide whiskers is as follows:

[0028] Mix acrylic acid and butyl acrylate with 12% of the total mass of mixed monomers with a mass ratio of...

Embodiment 2

[0035] A four-needle zinc oxide whisker modified polyurethane resin coating, prepared from the following raw materials in parts by weight: 30 parts of polyether polyol, 5 parts of dimethylol propionic acid, 50 parts of isophorone diisocyanate , 15 parts of toluene-2,4-diisocyanate, 0.2 parts of dibutyltin dilaurate, 3 parts of dimethylaminoethanol, 4 parts of hydrogenated modified castor oil, polyacrylate pre-coated tetrapod zinc oxide crystal 20 parts of whiskers, 3 parts of trimethylolpropane, 6 parts of butyl acetate, 20 parts of ethanol, 3 parts of anti-sedimentation agent, nano Fe 2 o 3 25 parts, 150 parts of water.

[0036] Among them, the anti-settling agent is obtained by mixing modified organic bentonite and fumed silica at a mass ratio of 1:1.

[0037] The preparation method of polyacrylate pre-coated tetraacicular zinc oxide whiskers is as follows:

[0038] Mix acrylic acid and butyl acrylate with 20% of the total mass of mixed monomers with a mass ratio of 4:1, ...

Embodiment 3

[0045] A four-needle zinc oxide whisker modified polyurethane resin coating, prepared from the following raw materials in parts by weight: 20 parts of polyether polyol, 3 parts of dimethylol propionic acid, 40 parts of isophorone diisocyanate , 10 parts of toluene-2,4-diisocyanate, 0.1 part of dibutyltin dilaurate, 1 part of dimethylaminoethanol, 2 parts of hydrogenated modified castor oil, polyacrylate pre-coated tetraacicular zinc oxide crystal 10 parts of whiskers, 1 part of trimethylolpropane, 5 parts of butyl acetate, 10 parts of ethanol, 1 part of anti-sedimentation agent, nano-TiO 2 20 parts, 120 parts of water.

[0046] Among them, the anti-settling agent is obtained by mixing modified organic bentonite and fumed silica at a mass ratio of 1:1.

[0047] The preparation method of polyacrylate pre-coated tetraacicular zinc oxide whiskers is as follows:

[0048] Mix acrylic acid and butyl acrylate with 10% of the total mass of mixed monomers with a mass ratio of 4:1, OP-...

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Abstract

The invention discloses a tetrapod-like zinc oxide whisker modified polyurethane resin coating and a preparation method thereof and relates to the technical field of coatings. The modified polyurethane resin coating is prepared from the following raw materials in parts by weight: 20-30 parts of polyether polyol, 3-6 parts of dimethylolpropionic acid, 40-60 parts of isophorone diisocyanate, 10-15 parts of methylbenzene-2,4-diisocyanate, 0.1-1 part of dibutyltin dilaurate, 1-3 parts of dimethylamino ethyl alcohol, 2-5 parts of hydrogenation modified castor oil, 10-20 parts of a polyacrylate precoated tetrapod-like zinc oxide whisker, 1-3 parts of trimethylolpropane, 5-10 parts of butyl acetate, 10-30 parts of ethanol, 1-5 parts of an anti-settling agent, 20-25 parts of nano filler and 120-150 parts of water. The tetrapod-like zinc oxide whisker modified polyurethane resin coating disclosed by the invention has excellent properties such as tension strength, elongation at break, tearing strength and thermal stability, in addition, is simple in preparation method and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a tetraacicular zinc oxide whisker modified polyurethane resin coating and a preparation method thereof. Background technique [0002] Tetra-needle like ZnO whiskers (Tetra-needle like ZnO whiskers, T-ZnOw for short) was discovered in the 1940s, and was first successfully developed in 1989 by Japan's Matsushita Industry. Tetraacicular zinc oxide whiskers are white loose powder in appearance, and have a three-dimensional tetraacicular three-dimensional structure at the microscopic level, that is, the whiskers have a core, and four needle-like crystals extend radially from the core, each of which is Single crystal microfiber, the angle between any two needles is 109°. The diameter of the center body of the whisker is 0.7-1.4 μm, the diameter of the root of the needle is 0.5-14 μm, and the length of the needle is 3-200 μm. The electron diffraction image shows that the whisker has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D7/62C08G18/66C08G18/76C08G18/36
CPCC08G18/36C08G18/6696C08G18/7614C08L2201/08C09D175/08C09D7/62C09D7/70C08K9/10C08K7/08
Inventor 江新水吴奇旭钱晓青江金海
Owner 无锡新而奇化工科技有限公司
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