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Wear-resistant anti-fog resin and preparation method thereof, and anti-fog coating

An anti-fog coating and resin technology, applied in coatings and other directions, can solve the problem that it is difficult to ensure the anti-fog performance of cold fog and hot fog scenes at the same time. Grinding requirements and other issues, to achieve good application prospects, improve strength and wear resistance, reduce use and residue effects

Active Publication Date: 2020-08-07
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of anti-fog coating is also easily washed off by water, which is only suitable for short-term use and cannot meet the long-term wear resistance requirements of many anti-fog product usage scenarios.
[0003] At present, wear-resistant anti-fog coatings are generally prepared from anti-fog resins. There are still many problems in the preparation process and application scenarios of anti-fog resin materials. or catalysts and other substances, and it is often difficult to guarantee the anti-fog performance in cold fog and hot fog scenarios at the same time
For example, patent 201510968433.0 reports a UV-curable anti-fog resin, which involves two-step synthesis of prepolymer and polymer, and the curing process needs to add small molecule catalysts and curing agents; Fog coatings need to add a variety of small molecules during the preparation process, and the anti-fog performance in cold fog and hot fog scenarios has not been investigated

Method used

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  • Wear-resistant anti-fog resin and preparation method thereof, and anti-fog coating
  • Wear-resistant anti-fog resin and preparation method thereof, and anti-fog coating
  • Wear-resistant anti-fog resin and preparation method thereof, and anti-fog coating

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preparation example Construction

[0030] The present invention provides a method for preparing wear-resistant anti-fog resin, which includes the following steps:

[0031] Under the action of the initiator, the hydrophilic monomer, epoxy monomer and benzophenone monomer are polymerized to obtain abrasion-resistant anti-fog resin.

[0032] In the present invention, the mass ratio of the hydrophilic monomer, epoxy monomer and benzophenone monomer is preferably 1~80:1~50:1~50, more preferably 20~60:5 ~30: 5~30. In the present invention, the hydrophilic monomer is at least one of a nonionic hydrophilic monomer and an ionic hydrophilic monomer, and specifically may be a nonionic hydrophilic monomer, an ionic hydrophilic monomer or A mixture of non-ionic hydrophilic monomers and ionic hydrophilic monomers; when the hydrophilic monomers include both non-ionic hydrophilic monomers and ionic hydrophilic monomers, the present invention treats the non-ionic hydrophilic monomers There is no special requirement for the mass ra...

Embodiment 1

[0053] (1) Take 10g of polyethylene glycol methyl ether methacrylate, 10g of 2-acrylamido-2-methylpropanesulfonic acid, 1g of 4-acryloxybenzophenone, and 1g of glycidyl methacrylate , 8 g of methyl methacrylate, 0.30 g of azobisisobutyronitrile, and 100 g of solvent DMF were added to a three-necked flask. After purging with nitrogen for 20 minutes, the temperature was raised to 80° C., reacted for 5 hours, and then precipitated with ether to obtain a resin.

[0054] (2) Dissolve the above resin in ethanol to obtain a resin solution with a mass concentration of 10% for use.

[0055] (3) After half of the PC substrate is plasma treated, the resin solution is knife-coated on the surface of the treated half of the PC, with a wet film thickness of 30 μm.

[0056] (4) Curing the PC coated with resin solution at 100℃ for 30min, then UV light (360nm, 2mW / cm 2 ) After curing for 30 minutes, an anti-fog coating is obtained.

Embodiment 2

[0058] (1) Take 5g of methacrylic acid, 10g of 2-acrylamido-2-methylpropanesulfonic acid, 2g of 4-acryloxybenzophenone, 2g of glycidyl methacrylate, and 10g of methyl methacrylate Add 0.30 g of azobisisobutyronitrile and 100 g of solvent DMF into a three-necked flask. After nitrogen purging for 20 minutes, the temperature was raised to 80° C., reacted for 5 hours, and then precipitated with ether to obtain a resin.

[0059] (2) Dissolve the above resin in ethanol to obtain a resin solution with a mass concentration of 15% for use.

[0060] (3) After plasma treatment of half of the glass substrate, the resin solution in step 2 is coated on the treated half of the glass surface through a dip coating process, with a wet film thickness of 20 μm.

[0061] (4) Curing the glass coated with resin solution at 100℃ for 30min, then UV light (360nm, 2mW / cm 2 ) Curing for 30 minutes to obtain an anti-fog coating.

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Abstract

The invention relates to the technical field of functional materials, and provides wear-resistant anti-fog resin and a preparation method thereof, and an anti-fog coating. According to the invention,the types of monomers are optimized; the wear-resistant anti-fog resin which can be self-crosslinked under the conditions of heat and UV is synthesized; the anti-fog resin can be dissolved in a low-toxicity organic solvent, a long-acting wear-resistant anti-fog coating can be prepared on planar and curved glass, PC, PMMA and PET, other initiators or cross-linking agents do not need to be added inthe curing process, and use and residues of toxic small molecules are reduced. The anti-fog coating provided by the invention has the advantages of lasting anti-fog effect, environment-friendly construction process, good wear resistance and higher safety to a human body, and the light transmission performance of the base material is not influenced.

Description

Technical field [0001] The invention relates to the technical field of functional materials, in particular to a wear-resistant anti-fog resin, a preparation method thereof, and an anti-fog coating. Background technique [0002] Materials such as transparent glass and plastic are widely used in industrial and agricultural production and daily life. When items such as glasses, protective glasses, and vehicle windshields are used in a high humidity environment, if there is a large temperature difference, the items Condensation will occur on the surface, which will significantly reduce the light transmittance of the material and seriously affect the normal use of the product. Therefore, the fields of life and production have extensive and urgent demands for anti-fog coating materials. In the current anti-fog products or technologies, the smear-type anti-fog liquid and spray-type anti-fog liquid can be applied by users themselves, and the process is simple and convenient. However, t...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/58C08F220/14C08F220/32C08F220/30C09D151/08C08J7/046C08J7/054C08L69/00
CPCC08F283/065C09D151/08C08J7/054C08J7/046C08J7/0427C08J2369/00C08J2451/08C08F220/585
Inventor 周峰王睿马正峰蔡美荣
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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