A kind of thermosetting wear-resistant polyurethane anti-fog film and preparation method thereof

A polyurethane and thermosetting technology, which is applied in the field of thermosetting wear-resistant polyurethane anti-fog film and its preparation, can solve problems such as fogging, poor water resistance and adhesion, and short anti-fog persistence, and achieve simple curing process, Long-lasting anti-fog effect, excellent anti-fog effect

Active Publication Date: 2021-03-23
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 and foreign markets are spray-type, and their main components are surfactants, which have a short anti-fog effect and are not resistant to wiping; heating the glass to heat up the defogging and defrosting requires a lot of electricity and metal; Other products are mostly expensive high-end disposable anti-fog products
[0004] ACS Appl.Mater.Interfaces, 2016, 8:8737 prepared a polymer coating with anti-fog function, but its water resistance and adhesion are poor; ACS Appl.Mater.Interfaces, 2015, 7:1004- In this paper, a hydrophobic anti-fog film is prepared, but its cost is high, the surface is not wear-resistant, and the anti-fog durability is poor
Therefore, the anti-fog coating materials currently developed in the market have disadvantages such as low adhesion, non-wearable surface, short anti-fog time, and high cost.

Method used

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  • A kind of thermosetting wear-resistant polyurethane anti-fog film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 100 parts of isophorone diisocyanate in a flask, add an appropriate amount of acetone to dissolve, put 10 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 initiator dibutyltin dilaurate, raise the temperature to 50°C and stir mechanically, and react for 1h; then add 50 parts of 50nm silica microsphere dispersion, stir and react at 60°C for 2h, stop the heating reaction, and obtain Modified silica microspheres 1 .

Embodiment 2

[0030] Put 100 parts of hexamethylene diisocyanate in a flask, add an appropriate amount of acetone to dissolve, put 20 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 the initiator dibutyltin dilaurate, raise the temperature to 50°C and stir mechanically, and react for 1 hour; then add 40 parts of 50nm silica microsphere dispersion liquid, stir and react at 60°C for 2 hours, stop the heating reaction, and obtain Modified silica microspheres 2 .

Embodiment 3

[0032] Put 100 parts of toluene diisocyanate in a flask, add an appropriate amount of acetone to dissolve, put 40 parts of polyoxyethylene ether (molecular weight is about 1000g / mol) dehydrated in a constant pressure dropping funnel, pass nitrogen to remove oxygen, in the initiator Under the action of dibutyltin dilaurate, heat up to 50°C and stir mechanically, and react for 1h; then add 30 parts of 100nm silica microsphere dispersion, stir and react at 60°C for 2h, stop the heating reaction, and obtain Modified silica microspheres 3 .

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Abstract

The invention provides a thermosetting abrasion-resistant polyurethane type anti-fog film and a preparation method thereof and belongs to the technical field of high polymer materials. The anti-fog film comprises silicon dioxide microspheres with isocyanate terminated macromolecular chains and a multifunctional curing agent, wherein the weight ratio is 100 to (5-50), the silicon dioxide microspheres with the isocyanato-terminated macromolecular chains mainly comprise isocyanate or isocyanate polymer, polyoxyethylene ether and silicon dioxide microspheres, wherein the weight ratio is 100 to (10-80) to (5-50). The anti-fog film has a lasting anti-fog effect, high surface hardness, abrasion resistance, scratch resistance, excellent water resistance, adjustable performance and structure, low cost and mature technology and is suitable for production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a thermosetting wear-resistant 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 and foreign markets are spray-type, and their main components are surfactants, which have a short anti-fog effect and are not resistant to wiping; heating the glass to heat up the defogging and defrosting requires a lot of electricity and metal; Other products are mostl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08K7/18C08G18/66C08G18/48C08G18/32C08J5/18
Inventor 杨铄冰东为富朱永国李婷刘晓锦贾睿
Owner JIANGNAN UNIV
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