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Anti-fog treatment method for plastic substrate and anti-fog plastic prepared therefrom

A processing method and technology for plastic substrates, which are applied in polyether coatings, chitin coatings, hyaluronic acid coatings, etc., can solve problems such as poor durability of anti-fog coatings, and achieve good water resistance and water vapor resistance. Wide range of effects

Active Publication Date: 2018-04-13
怀宁县成科新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of poor durability of the anti-fog coating in the prior art, and to provide a plastic substrate anti-fog treatment method, especially a durable anti-fog plastic sheet superthermal hydrogen treatment method

Method used

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  • Anti-fog treatment method for plastic substrate and anti-fog plastic prepared therefrom
  • Anti-fog treatment method for plastic substrate and anti-fog plastic prepared therefrom
  • Anti-fog treatment method for plastic substrate and anti-fog plastic prepared therefrom

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The washed and dried polyethylene sheet was pretreated for 60s with a low-temperature plasma surface treatment machine at a voltage of 50V. Dissolve and disperse 0.05% polyacrylic acid in 99.95% secondary aqueous solution, ultrasonically disperse for 10 minutes, and then apply dip coating on the surface of polyethylene sheet treated with low-temperature plasma surface, and dry to obtain a thickness of 34nm The modification layer. The polyethylene sheet containing the modified layer was treated with superthermal hydrogen, the voltage of the superthermal hydrogen treatment was 100V, the degree of vacuum was 0.05Pa, and the treatment time was 120s to obtain the final durable anti-fog plastic sheet.

Embodiment 2

[0036] The washed and dried polyethylene sheet was pretreated for 55s with a low-temperature plasma surface treatment machine at a voltage of 75V. Dissolve and disperse 0.1% chitosan quaternary ammonium salt in 99.9% secondary aqueous solution, ultrasonically disperse for 10 minutes, and then apply spin coating on the surface of polyethylene sheet treated with low-temperature plasma surface, dry, A modified layer with a thickness of 18 nm was obtained. The polyethylene sheet containing the modified layer was treated with superthermal hydrogen, the voltage of superthermal hydrogen treatment was 150V, the degree of vacuum was 0.1Pa, and the treatment time was 90s to obtain the final durable anti-fog plastic sheet.

Embodiment 3

[0038] After cleaning and drying, the polypropylene sheet was pretreated with a low-temperature plasma surface treatment machine at a voltage of 75V for 50s. Dissolve and disperse 0.2% polyethylene glycol and 0.2% nano-silicon dioxide (particle size: 7nm) in 99.6% secondary water, ultrasonically disperse for 20 minutes, prepare a modified solution, and then apply it on the surface by spraying. The surface of the polypropylene sheet treated with low-temperature plasma was dried to obtain a modified layer with a thickness of 123 nm. The polypropylene sheet containing the modified layer was treated with superthermal hydrogen, the voltage of the superthermal hydrogen treatment was 200V, the degree of vacuum was 0.15Pa, and the treatment time was 60s to obtain the final durable anti-fog plastic sheet.

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Abstract

The invention discloses a super-thermal hydrogen treatment method of durable anti-fog plastic sheet, which comprises the following steps: (1) pretreating a plastic substrate with a low-temperature plasma surface finishing machine; (2) spreading a solution containing polymer / nano-silica onto the surface of the pretreated plastic substrate; and (3) stoving the plastic substrate, and then performing super-thermal hydrogen treatment of the plastic substrate to obtain the durable anti-fog plastic sheet. The preparation technology of the durable anti-fog plastic sheet is green and environment-friendly, and can be used for directly grafting and modifying a common hydrophobic polymer substrate with a hydrophilic polymer, a final product has high transparency and a certain permeability improvement effect, and meanwhile the anti-fog performance of the surface of a sample is durable so as to overcome the defect of poor anti-fog durability of the conventional anti-fog product.

Description

technical field [0001] The invention relates to a plastic surface modification treatment method, in particular to a plastic substrate surface superthermal hydrogen modification anti-fog treatment method and the anti-fog plastic obtained by the modification, belonging to the technical field of material surface anti-fog. Background technique [0002] Due to the existence of high humidity or large temperature difference on the surface of the material, fog that affects the line of sight is often formed, which reduces the light transmittance of the transparent plastic sheet and affects the normal use of products such as resin glasses. Currently commonly used anti-fog technology can be divided into the following categories: (1) electrothermal anti-fog (CN 104172816 A; CN 104015431A); (2) surfactant anti-fog (CN104087248A; CN 101659854A; CN 104212655A); (3) Hydrophilic coating anti-fog (CN 103740332A; CN101065456B; CN 101659855A; CN 103466959A); (4) Hydrophobic coating anti-fog (CN...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04C08L23/06C08L23/12C08L67/02C08L33/12C08L69/00C09D133/02C09D105/08C09D171/02C09D1/00C09D133/26C09D101/28C09D105/00
Inventor 唐昶宇何周坤邵虹徐克勤胡歆刘焕明梅军
Owner 怀宁县成科新材料研究院有限公司
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