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Hydroxyl polysiloxane modified waterborne polyurethane emulsion, super-smooth surface coating and preparation method thereof

A hydroxyl polysiloxane, water-based polyurethane technology, used in polyurea/polyurethane coatings, coatings, antifouling/underwater coatings, etc., can solve problems such as short service life and achieve the effect of extending service life

Pending Publication Date: 2021-09-24
深圳市玉瓶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For above-mentioned deficiencies or defects, the purpose of the present invention is to provide a kind of hydroxyl polysiloxane modified aqueous polyurethane emulsion, super-slip surface coating and preparation method thereof, can effectively solve the existing super-slip surface coating volatile Problems with organic solvents and short service life

Method used

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  • Hydroxyl polysiloxane modified waterborne polyurethane emulsion, super-smooth surface coating and preparation method thereof
  • Hydroxyl polysiloxane modified waterborne polyurethane emulsion, super-smooth surface coating and preparation method thereof

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Embodiment 1

[0046] The present embodiment 1 provides a kind of hydroxyl polysiloxane modified aqueous polyurethane emulsion, comprising the following components by mass: 20 parts of isophorone diisocyanate, 40 parts of hydroxyl polysiloxane with a molecular weight of 2000g / mol, two 0.1 part of dibutyltin laurate catalyst, 10 parts of 2,2-dimethylol propionic acid hydrophilic chain extender, 50 parts of simethicone oil with a molecular weight of 2000 g / mol, 10 parts of triethylamine salt forming agent and deionized 500 parts of water.

[0047] The preparation method of the above-mentioned hydroxyl polysiloxane modified water-based polyurethane emulsion is as follows: add isophorone diisocyanate, hydroxyl polysiloxane and catalyst into the reaction vessel, stir and react at 80°C for 3 hours, then add hydrophilic Chain extender and simethicone, continue to stir and react at 70°C for 2 hours to obtain a mixed reaction system; then cool down the mixed reaction system to 30°C, add a salt-formin...

Embodiment 2

[0050] This embodiment 2 provides a hydroxypolysiloxane modified water-based polyurethane emulsion, including the following components in parts by mass: 30 parts of toluene-2,4-diisocyanate, 70 parts of hydroxypolysiloxane with a molecular weight of 50000 g / mol , 0.3 parts of dibutyltin dilaurate catalyst, 10 parts of 1,4-butanediol-2-sulfonate sodium hydrophilic chain extender, 50 parts of dimethyl silicone oil with a molecular weight of 5000g / mol, 1,4-butanediol 5 parts of alcohol small molecule chain extender, 10 parts of epichlorohydrin salt forming agent, 5 parts of organic solvent acetone and 800 parts of deionized water.

[0051] The preparation method of the above-mentioned hydroxyl polysiloxane modified water-based polyurethane emulsion is as follows: add diisocyanate, hydroxyl polysiloxane and catalyst into the reaction vessel, stir and react at 80°C for 3 hours, then add hydrophilic chain extender, Simethicone oil, small molecule chain extender and organic solvent w...

Embodiment 3

[0054] This embodiment 3 provides a hydroxypolysiloxane modified water-based polyurethane emulsion, including the following components by mass: 15 parts of hexamethylene diisocyanate, 20 parts of hydroxypolysiloxane with a molecular weight of 30000 g / mol, Sanya 0.02 parts of ethylenediamine catalyst, 2 parts of 1,4-butanediol-2-sulfonate sodium hydrophilic chain extender, 10 parts of simethicone with a molecular weight of 300 g / mol, ethylenediamine small molecule chain extender 0.1 part, 2 parts of epichlorohydrin salt forming agent, 1 part of organic solvent N,N-dimethylamide and 100 parts of deionized water.

[0055] The preparation method of the hydroxypolysiloxane-modified water-based polyurethane emulsion provided in Example 3 is the same as that in Example 2.

[0056] The present embodiment 3 also provides a kind of ultra-slip surface coating and preparation method thereof, and the specific process is: the above-mentioned hydroxyl polysiloxane modified water-based polyur...

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Abstract

The invention discloses a hydroxyl polysiloxane modified waterborne polyurethane emulsion, a super-smooth surface coating and a preparation method thereof, and belongs to the field of high polymer materials. The super-smooth surface coating is coated on the surface of a material based on the hydroxyl polysiloxane modified waterborne polyurethane emulsion in a spin coating, blade coating, roller coating, spray coating, brush coating or deposition mode, and evaporated to remove water and dried. The super-smooth surface coating can respond to the magnitude of the interfacial pressure effect, realizes continuous and automatic secretion of simethicone from the inside of the coating to the outside, solves the problem of short service life of the super-smooth surface coating, and can be used for forming the super-smooth coating on the surfaces of materials such as metal, glass, ceramic, wood plates, fabrics and high-molecular plates, the functions of deicing, defrosting, antibiosis, bioadhesion resistance, self-cleaning and the like are achieved; the super-smooth surface coating belongs to a green and environment-friendly coating, no organic solvent is released in the using process, and the problem that volatile organic solvents exist in an existing super-smooth surface coating is solved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a hydroxyl polysiloxane modified water-based polyurethane emulsion, a super-slip surface coating and a preparation method thereof. Background technique [0002] Adhesion is the process of interaction between material surfaces, and in some scenarios, adhesion often becomes the cause of hindering or destroying production. For example, the adhesion of marine organisms such as barnacles, oysters, and algae on hulls, offshore platforms, and aquaculture cages increases the resistance of ships, accelerates metal corrosion, and blocks the channels of aquaculture cages. Another example is that in a humid and cold environment, thick ice layers are likely to form on the surfaces of wind turbine blades, aircraft wings, cables and other equipment, causing safety accidents. Another example is the adhesion process of viruses, molds, and particulate matter, which has caused problems such as hum...

Claims

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Application Information

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IPC IPC(8): C08G18/61C08G18/34C08G18/32C08G18/48C08G18/65C09D5/08C09D5/14C09D175/04C09D183/04
CPCC08G18/61C08G18/348C08G18/3206C08G18/3855C08G18/3228C08G18/3281C08G18/329C08G18/4833C08G18/6511C08G18/6529C08G18/6535C08G18/6541C09D5/14C09D5/08C09D175/04C09D183/04C08G2150/00
Inventor 崔家喜方远来
Owner 深圳市玉瓶科技有限公司