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Ultraviolet light cured antifogging coating

An anti-fog coating and ultraviolet light technology, applied in the coating and other directions, can solve the problems of difficulty in achieving both wear resistance, water resistance and anti-fog performance, inability to achieve anti-fog effect, and swelling on the surface of the anti-fog coating. Long-lasting anti-fog performance, excellent anti-fog durability, and the effect of reducing migration tendency

Active Publication Date: 2015-05-20
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the published literature and patents, the main resin constituting the anti-fog coating usually contains both hydrophilic and hydrophobic units. When the hydrophilicity of the resin increases, the anti-fog performance of the anti-fog coating also increases, but The water resistance becomes poor, and the surface of the anti-fog coating swells after absorbing water, and the hardness decreases
Although increasing the cross-linking degree of the resin can solve the problems of water resistance and hardness, the anti-fog performance often decreases, and it is impossible to achieve an efficient and durable anti-fog effect
The coating components provided by these patents also have problems in terms of abrasion resistance, water resistance and anti-fog performance.

Method used

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  • Ultraviolet light cured antifogging coating
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  • Ultraviolet light cured antifogging coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 Preparation of UV-cured anti-fog coating

[0018] (1) Preparation of anti-fog active resin A

[0019] Specific steps are as follows:

[0020] ① Prepare the raw materials

[0021] The specific dosage is: 40 parts by weight of reactive nonionic surfactant SN-10, 15 parts by weight of acrylic acid, 45 parts by weight of butyl acrylate, and the total amount of the three is 100 parts by weight; 50 parts by weight of butyl acetate, 50 parts by weight of propylene glycol methyl ether Parts by weight, 1.6 parts by weight of initiator azobisisobutyronitrile; 20 parts by weight of glycidyl methacrylate (the ratio of glycidyl methacrylate to acrylic acid is 20:15=1.33);

[0022] ②Preparation process

[0023] 40 parts by weight of butyl acetate and all propylene glycol methyl ether are mixed and put into the reactor, and the temperature is raised to 90° C., and a total of 100 parts by weight of reactive nonionic surfactant SN-10, acrylic acid and butyl acrylate and 75 ...

Embodiment 2

[0032] Example 2 Preparation of UV-curable anti-fog coating

[0033] (1) Preparation of anti-fog active resin B

[0034] Specific steps are as follows:

[0035] ① Prepare the raw materials

[0036] The specific dosage is: 30 parts by weight of reactive nonionic surfactant SN-15, 15 parts by weight of acrylic acid, 55 parts by weight of butyl methacrylate, and the total amount of the three is 100 parts by weight; 50 parts by weight of butyl acetate, propylene glycol methyl ether 50 parts by weight, 1.6 parts by weight of initiator azobisisobutyronitrile; 20 parts by weight of glycidyl methacrylate (the ratio of glycidyl methacrylate to acrylic acid is 20:15=1.33);

[0037] ②Preparation process

[0038] Except for different raw materials and dosages, the specific preparation steps were the same as in Example 1 to obtain the anti-fog active resin B.

[0039] (2) Preparation of UV-curable anti-fog coating

[0040] ① See Table 2 for coating formulations.

[0041] Table 2

[...

Embodiment 3

[0045] Example 3 Preparation of UV-cured anti-fog coating

[0046] (2) Preparation of anti-fog active resin C

[0047]Specific steps are as follows:

[0048] ① Prepare the raw materials

[0049] The specific dosage is: 25 parts by weight of reactive nonionic surfactant SN-20, 20 parts by weight of methacrylic acid, 55 parts by weight of butyl acrylate, and the total amount of the three is 100 parts by weight; 50 parts by weight of butyl acetate, propylene glycol methyl 50 parts by weight of ether, 1.6 parts by weight of initiator azobisisobutyronitrile; 22 parts by weight of glycidyl methacrylate (the ratio of glycidyl methacrylate to methacrylic acid is 22:20=1.1);

[0050] ②Preparation process

[0051] Except for different raw materials and dosages, the specific preparation steps were the same as in Example 1 to obtain the anti-fog active resin C.

[0052] (2) Preparation of UV-curable anti-fog coating

[0053] ① See Table 3 for coating formulations.

[0054] table 3 ...

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Abstract

The invention relates to an ultraviolet light cured antifogging coating. The ltraviolet light cured antifogging coating adopts antifogging activated resin which contains activated double bond and can be cured by ultraviolet light as the main film-forming resin, and is prepared by mixing, based on total weight of the antifogging coating, 32-60% of the antifogging activated resin, 10-25% of activated diluent, 1.5-2.5% of photoinitiator, 25-40% of solvent, and 0.1-1% of adjuvant. The antifogging activated resin is prepared by subjecting reactive nonionic surfactant allyloxy nonyl phenoxy propanol polyoxyethylene ether, (methyl) acrylic acid and (methyl) butyl acrylate to free radical polymerization, and grafting and modifying by the polymer via glycidyl methacrylate, wherein the amount ratio of the glycidyl methacrylate to the (methyl) acrylic acid is 1-1.4. The film formed by the coating cured by the ultraviolet light is high in water resistance performance, durable in antifogging effect and high in hardness, and wiping resistance is improved remarkably.

Description

technical field [0001] The invention relates to an ultraviolet curing anti-fog coating. Background technique [0002] Fog is a common natural phenomenon in the meteorological environment. When the water vapor in the air reaches or approaches the dew point temperature, it will condense into tiny liquid droplets to form fog. As a result of the atomization of water droplets on the surface of transparent materials, not only the decrease of light transmittance affects the vision, but sometimes it even causes harm. As a result, the efficiency of solar energy absorption is reduced, which is not conducive to the full play of these facilities. In order to prevent the atomization of the surface of transparent materials, people have taken various measures to eliminate the condensation of droplets, among which there are three commonly used methods: ① heating method. Heating on the surface of transparent materials to keep the surface temperature above the dew point to prevent condensa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/00C09D5/00C09D7/12
Inventor 顾斌王木立沈雪锋苟小青
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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