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Ionic polyurethane anti-fog film, and preparation method thereof

A polyurethane-based, ionic technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of unsuitability for industrial production, poor water resistance and adhesion, high price, etc., and achieves adjustable performance and structure. , long-lasting anti-fog effect and low-cost effect

Active Publication Date: 2019-07-02
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The production and use of transparent materials have penetrated into all aspects of people's lives, but transparent materials (such as glasses, masks, bathroom glass, car front glass, camera lenses, floor-to-ceiling windows, display cabinets) will fog up and interfere with sight in certain environments , this phenomenon has brought a lot of troubles to people, and even caused safety hazards and major economic losses.
[0003] Most of the anti-fog materials in the domestic market are spray-type, and their main components are surfactants. The best anti-fog durability in the market is the product of FSI company in the United States. Premium series products, but the curing temperature needs to be as high as 150°C, and the anti-fog effect drops sharply after soaking in water, the price is high, and most of them are used as disposable anti-fog products in the high-end field
[0004] ACS Appl.Mater.Interfaces, 2016, 8:8737 prepared a polymer coating with anti-fog function, but its water resistance and adhesion are poor; mentioned in patents CN 108504235 A, CN 108384293 A, CN108504150A Anti-fog coatings of several ionic polyelectrolyte copolymers have excellent anti-fog effects, but their synthesis process is complicated, and a large amount of fluorine-containing monomers are used, which is costly and not suitable for industrial production.
The anti-fog coating materials currently developed in the market have disadvantages such as low adhesion, complicated production process, short anti-fog time, and high cost.

Method used

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  • Ionic polyurethane anti-fog film, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Put 100 parts of isophorone diisocyanate in a flask, add an appropriate amount of acetone to dissolve, put 5 parts of dehydrated polyoxyethylene ether (molecular weight is about 200g / mol) in a constant pressure dropping funnel, pass nitrogen to remove oxygen, Under the action of the catalyst dibutyltin dilaurate, raise the temperature to 50°C and stir mechanically, and react for 1 hour; then add 60 parts of dodecyl dihydroxyethyl betaine and 10 parts of hydroxyethyl acrylate, stir and react at 60°C for 2 hours, and stop heating reaction.

[0027] The above product is mixed with 10 parts of α-allyl alkylphenol polyoxyethylene ether (10) ammonium sulfate and 1 part of benzophenone, and then the film is coated and then photocured to form a film.

Embodiment 2

[0029] Put 100 parts of hexamethylene diisocyanate in a flask, add an appropriate amount of acetone to dissolve, put 10 parts of dehydrated polyoxyethylene ether (molecular weight is about 600g / mol) in a constant pressure dropping funnel, pass nitrogen to remove oxygen, Under the action of dibutyltin dilaurate as a catalyst, heat up to 50°C and stir mechanically, and react for 1 hour; then add 50 parts of tetradecyl dihydroxyethyl betaine and 15 parts of hydroxyethyl methacrylate, stir and react at 60°C for 2 hours, The heating reaction was stopped.

[0030] The above product is mixed with 10 parts of α-allyl alkylphenol polyoxyethylene ether (10) ammonium sulfate and 1 part of toluyl peroxide evenly, and then the film is coated and then thermally cured to form a film.

Embodiment 3

[0032] Put 50 parts of 1,6-hexamethylene diisocyanate and 50 parts of lysine diisocyanate in a flask, add an appropriate amount of acetone to dissolve, and place 20 parts of dehydrated polyoxyethylene ether (molecular weight about 1000g / mol) in a constant pressure drop In the liquid funnel, pass nitrogen to remove oxygen, under the action of catalyst dibutyltin dilaurate, heat up to 50°C and stir mechanically, react for 1h; then add 50 parts of octadecyl dihydroxyethyl betaine and 10 parts of pentaerythritol triacrylate , Stir the reaction at 60°C for 2h, and stop the heating reaction.

[0033] The above product was mixed with 8 parts of allyl polyoxyethylene ether ammonium sulfate and 0.6 parts of α,α-dimethoxy-α-phenylacetophenone, and then the film was coated and then photocured to form a film.

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Abstract

The invention provides an ionic polyurethane anti-fog film, and a preparation method thereof, and belongs to the technical field of high molecular material. The ionic polyurethane anti-fog film is prepared through polymerization taking an isocyanate or an isocyanate multimer, polyoxyethylene ether, a bishydroxy ionic compound, a hydroxyl group-containing acrylate compound, an allyl ion surfactant,and an initiator as reactants at a weight ratio 100 :(5-40): (20-60): (5-20): (1-10): (0.05-1), preferably 100: (5-20): (50-60): (10-20): (5-10): (0.5-1). According to the preparation method, the ionic compound is introduced into polymer chains in different forms, no migration or shedding is caused, fogging inhibition effect lasts long. In addition, the surface of the ionic polyurethane anti-fogfilm possesses scratch resistance, excellent water resistance and high adhesion performance with substrate; the performance and the structure are controllable, cost is low, technology is mature, and the preparation method is suitable for production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an ionic polyurethane anti-fog film and a preparation method thereof. Background technique [0002] The production and use of transparent materials have penetrated into all aspects of people's lives, but transparent materials (such as glasses, masks, bathroom glass, car front glass, camera lenses, floor-to-ceiling windows, display cabinets) will fog up and interfere with sight in certain environments , this phenomenon has brought a lot of troubles to people, and even caused safety hazards and major economic losses. [0003] Most of the anti-fog materials in the domestic market are spray-type, and their main components are surfactants. The best anti-fog durability in the market is the product of FSI company in the United States. Premium series products, but the curing temperature needs to be as high as 150°C, and the anti-fog effect drops sharply after so...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D7/63C08G18/67C08G18/48C08G18/66C08G18/32
CPCC08G18/3275C08G18/4833C08G18/6688C08G18/672C08G18/673C09D175/14C09D7/63
Inventor 李婷东为富杨铄冰刘晓锦陈明清马丕明
Owner JIANGNAN UNIV