Preparation method of nanometer enhanced ultraviolet curing antifogging agent
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A nano-enhanced, anti-fogging technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of insufficient wear resistance, low hardness, limited application, etc., and achieve efficient dispersion, high hardness, and good water resistance. Effect
Active Publication Date: 2022-01-21
杭州梵因科技有限公司
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Thermosetting coatings require a certain temperature to cross-link and solidify polymer materials into films, which limits their application on the surface of some heat-sensitive transparent optical materials, while UV-curing anti-fog coatings can effectively solve the problem of thermal-curing anti-fog coatings. this quest
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[0027] The nano-enhanced ultraviolet curing suds preparation method of the present invention includes the following steps:
[0028] (1) Preparation of a nitride nanoparticle dispersion
[0029] Under stirring, 1 mol / L of aqueous sulfuric acid solution was added dropwise to 80 ° C, 0.5 mol / L of melamine aqueous solution to form a white suspension, continued to be stirred for 2 h, and precipitate, filtered precipitate, first wash it five times with distilled water. Then washed three times with anhydrous ethanol, and the melamine sulfate was obtained at 60 ° C for 24 h.
[0030] 3 to 5 parts by mass of melamine sulfate, 2 to 3 parts by mass of urea mixed mixed, heat treatment in the tubular furnace, the controlling rate of 8 ° C / min, heat treatment at 400 ° C for 8 h; naturally cooled to room temperature, Nitride particles were obtained.
[0031] 10 parts by mass of carbon nitride particles, 80 parts by mass of the deionized water, 3 to 6 parts by mass of the ammonia, 8 to 12 p...
Example
[0049] 2, comparison test example 1
[0050] A commercially available surface of a brand comes with a fogco-coated polycarbonate lens product, which is coated according to the operation step of the test 1, and anti-fog performance, water resistance, and anti-fog coating hardness test. The results of the test were: the anti-fog performance test did not get fog, the water resistance was fog, and the anti-fog coating hardness was 2 h.
Example
[0051] 3, comparison test example 2
[0052] Take a primary component of the polyurethane acrylate, a coating treatment is carried out on a polycarbonate plastic sheet according to the operation step of the test 1, and anti-fog performance, water resistance, and anti-fog coating hardness test. The test results are: anti-fog performance test is not fog, the water resistance is fog, and the anti-fog coating hardness is H.
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Abstract
The invention relates to preparation of an antifogging material, and aims to provide a preparation method of a nanometer enhanced ultraviolet curing antifogging agent. The method comprises the following steps: uniformly mixing a carbon nitride nanoparticle dispersion liquid, deionized water and acetic acid, dropwise adding organosiloxane, and continuously stirring; heating and concentrating the product to obtain modified carbon nitride nanoparticles; uniformly mixing the silicon-acrylate modified carbon nitride compound with an acrylate monomer, 2-hydroxy-2-methyl-phenylacetone and absolute ethyl alcohol, and irradiating with strong light to obtain a silicon-acrylate modified carbon nitride compound; and then uniformly mixing with a fluorine-containing acrylate monomer, a propoxylated polyfunctional acrylate monomer, an aliphatic polyurethane acrylate monomer, a vinyl ether monomer, 2-hydroxy-2-methyl-phenylacetone and absolute ethyl alcohol, so as to obtain the antifogging agent product. The problem that hydrophilicity, water resistance, hardness and flexibility in a traditional ultraviolet curing system are difficult to consider at the same time is solved. Compared with the prior art, the product provided by the invention has the advantages of good water resistance and high hardness.
Description
technical field [0001] The invention relates to the preparation of anti-fog materials, in particular to a preparation method of a nano-enhanced ultraviolet curing anti-fog agent. Background technique [0002] Transparent optical materials, such as silicate glass, polycarbonate, polyester, polymethyl methacrylate, polyethylene, etc., are common materials in modern people's production and life, and have been widely used in various fields of the national economy, such as spectacle lenses, Bathroom glass or mirrors, vehicle windshields and rearview mirrors, observation windows for measuring instruments in laboratories, plastic sheets or glass curtain walls for greenhouses, etc. However, under certain conditions, transparent optical materials often have the problem of fogging, which brings inconvenience to the use of transparent optical materials, and even causes serious consequences that cannot be ignored. Therefore, how to solve the fogging problem of transparent optical mater...
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