A kind of ultraviolet photocuring anti-fog coating and preparation method thereof

An anti-fog coating and light-curing technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of low preheating temperature of UV-curing anti-fog coatings, affecting the light transmittance of transparent materials, and deformation of transparent film materials. , to achieve the effects of excellent light transmittance, excellent image fidelity, and high surface free energy

Active Publication Date: 2019-03-26
卡秀万辉(无锡)高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the temperature difference, there is often a certain temperature difference between the two sides of the transparent material. The saturated vapor pressure of the moisture on the surface with low temperature is lower than the vapor pressure of the surrounding environment, which will cause the water vapor to accumulate on the surface of the object and produce fog, which will affect the light transmittance of the transparent material and affect the line of sight.
[0003] At present, thermosetting anti-fog systems are mostly used in domestic and foreign markets. Due to formula reasons, thermosetting systems require high-temperature cross-linking, resulting in deformation of most transparent film materials, while UV-curable anti-fog coatings have low preheating temperatures and are suitable for heat treatment. sensitive material

Method used

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  • A kind of ultraviolet photocuring anti-fog coating and preparation method thereof
  • A kind of ultraviolet photocuring anti-fog coating and preparation method thereof
  • A kind of ultraviolet photocuring anti-fog coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The ultraviolet photocuring anti-fog coating provided by the applicant consists of the following raw materials:

[0027] Hydrophilic treated silica microspheres: 60g;

[0028] Hydrophilic polymer long chain polyurethane acrylate (model: EB8702): 12g;

[0029] Acetone: 30g;

[0030] Aqueous monomer (HEMA): 12g;

[0031] Photoinitiator (Irgacure 754): 1.2 g.

[0032] The method for hydrophilic treatment of silica microspheres is:

[0033] (1) React silica microspheres with a particle size of 30nm (model: X21-B1022) with isocyanate-type trimethoxysilane, and the reaction molar ratio is controlled at 100:25; the reaction temperature is controlled at 70°C, and the reaction time is 8 hours ;Use HCl as a catalyst, the pH value is adjusted at 3; the stirring speed is controlled at 600rpm;

[0034] (2) React the product obtained in step (1) with hydroxyethyl methacrylate, the molar ratio is controlled at 1:1.2; the reaction temperature is controlled at 80°C, and the reactio...

Embodiment 2

[0039] The ultraviolet photocuring anti-fog coating provided by the applicant consists of the following raw materials:

[0040] Hydrophilic treated silica microspheres: 55g;

[0041] Hydrophilic polymer long chain polyurethane acrylate (model: EB8702): 9g;

[0042] Acetone: 25g;

[0043] Aqueous monomer (HEMA): 10g;

[0044] Photoinitiator (Irgacure 754): 1 g.

[0045] The method for hydrophilic treatment of silica microspheres is:

[0046] (1) React silica microspheres with a particle size of 20nm (model: X21-B1022) with isocyanate-type trimethoxysilane, and the reaction molar ratio is controlled at 100:20; the reaction temperature is controlled at 65°C, and the reaction time is 7 hours ; Use HCl as a catalyst, the pH value is adjusted at 2; the stirring speed is controlled at 550rpm;

[0047] (2) React the product obtained in step (1) with hydroxyethyl methacrylate, the molar ratio is controlled at 1:1.1; the reaction temperature is controlled at 75°C, and the reaction ...

Embodiment 3

[0052] The ultraviolet photocuring anti-fog coating provided by the applicant consists of the following raw materials:

[0053] Hydrophilic treated silica microspheres: 50g;

[0054] Hydrophilic polymer long chain polyurethane acrylate (model: EB8702): 7g;

[0055] Acetone: 20g;

[0056] Aqueous monomer (HEMA): 8g;

[0057] Photoinitiator (Irgacure 754): 0.9 g.

[0058] The method for hydrophilic treatment of silica microspheres is:

[0059] (1) React silica microspheres with a particle size of 15nm (model: X21-B1022) with isocyanate-type trimethoxysilane, and the reaction molar ratio is controlled at 100:15; the reaction temperature is controlled at 60°C, and the reaction time is 6 hours ; Use HCl as a catalyst, the pH value is adjusted at 2; the stirring speed is controlled at 500rpm;

[0060] (2) React the product obtained in step (1) with hydroxyethyl methacrylate, the molar ratio is controlled at 1:1.1; the reaction temperature is controlled at 70°C, and the reaction...

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Abstract

The invention provides an ultraviolet photo-curing anti-fog coating which is composed of, by weight: 50-60 parts of hydrophilically treated silicon dioxide microspheres, 7-12 parts of hydrophilic high-molecular long-chain polyurethane acrylate, 20-30 parts of acetone, 8-12 parts of an aqueous monomer, and 0.9-1.2 parts of a photo-initiator. In the invention, the hydrophilic silicon dioxide microspheres being subjected to special surface modification is matched with the special hydrophilic high-molecular long-chain polyurethane acrylate, so that the anti-fog coating has good solvent resistance, is ultraviolet-resistant, and has excellent hydrophilicity, durable water resistance and excellent anti-fog property.

Description

technical field [0001] The invention relates to the technical field of ultraviolet light curing coatings, in particular to an ultraviolet light curing anti-fog coating and a preparation method thereof. Background technique [0002] Anti-fog coating is a kind of functional coating, which is mostly suitable for the surface of transparent materials, such as window glass in winter, car windshield glass, bathroom glass, plastic greenhouses, etc. Due to the temperature difference, there is often a certain temperature difference between the two sides of the transparent material. The saturated vapor pressure of the moisture on the surface with low temperature is lower than the vapor pressure of the surrounding environment, which will cause the water vapor to accumulate on the surface of the object and produce fog, which will affect the light transmittance of the transparent material and affect the line of sight. . [0003] At present, thermosetting anti-fog systems are mostly used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D7/62
CPCC08K3/36C08K9/06C09D175/14
Inventor 钱桂林朱永国
Owner 卡秀万辉(无锡)高新材料有限公司
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