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A kind of preparation method of superhydrophobic wear-resistant glass
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A wear-resistant glass, super-hydrophobic technology, applied in coatings and other directions, can solve the problems of low surface free energy, water or stain residue, poor cleaning effect, etc., to achieve the effect of improving wear resistance
Active Publication Date: 2021-07-23
XIAN MODERN CHEM RES INST
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Problems solved by technology
Silicone containing long-chain fluorine-containing groups is a class of substances with very low surface free energy. US6395331 discloses that the contact angle of long-chain fluorocarbons and fluorocarbon self-assembled monolayer films to water is less than 120°. When the angle is less than 120°, the solid surface has hydrophobic ability, but water or stains tend to remain on the surface, and the self-cleaning effect is poor
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preparation example Construction
[0010] Preparation of fluorine-containing silicone hydrophobic agent containing nano-diamond: under stirring at room temperature, add solvent CFC113a99.8g into the reaction flask, add n-octadecyltriethoxysilane 0.08g, (heptadecafluoro-1,1,2 ,2-tetrahydrodecyl)methyldimethoxysilane hydrolyzate 0.10g, n-hexadecyltriethoxysilane modified nano-diamond 0.06g, fluorine-containing polyether (molecular weight 2000-2800) 0.01g, Stirring was continued for 0.5h after the addition was complete.
[0011] Contact angle test: contact angle tester, Shanghai Zhongchen Digital Technology Equipment Co., Ltd., JC2000D type, deionized water 5 μL.
[0012] Abrasion resistance test: linear abrasion tester, flannel cloth, load 9.8N / cm2, 40 reciprocation / min, reciprocation distance 12±2cm, reciprocation 10000 times, contact angle before and after the test.
Embodiment 1
[0014] (1) Immerse the glass in 1‰ acidic nano-silica sol (solid particles 5-100nm) for 5 minutes, bake at 500°C for 5 hours, wash and dry;
[0015] (2) At room temperature, immerse the glass sample prepared in (1) in a fluorine-containing silicone hydrophobic agent containing nano-diamonds for 5 minutes, and place it at 25°C for 24 hours. The initial contact angle is 168.1°, and the contact angle after the abrasion resistance test is 163.8° , The visible light transmittance is 89%.
Embodiment 2
[0019] (1) Immerse the glass in 5‰ of acidic nano-silica sol (solid particles 100-200nm) for 5 minutes, bake at 400°C for 4 hours, wash and dry;
[0020] (2) At room temperature, immerse the glass sample prepared in (1) in a fluorine-containing silicone hydrophobic agent containing nano-diamonds for 5 minutes, and place it at 35°C for 24 hours. The initial contact angle is 145.9°, and the contact angle after the abrasion resistance test is 140.2° , The visible light transmittance is 90%.
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Abstract
The invention discloses a preparation method of superhydrophobic wear-resistant glass. The invention comprises the following steps: (1) immersing the glass in an ethanol solution of nano-silica sol with a concentration of 1‰ to 2% by mass for 5 minutes, roasting at 300° C. to 650° C. for 1 to 5 hours, cleaning and drying; (2) ) in a fluorine-containing silicone hydrophobizing agent containing nano-diamonds for 5 minutes, and placed at 15° C. to 100° C. for 24 hours to obtain superhydrophobic wear-resistant glass. The invention is mainly used for the preparation of superhydrophobic wear-resistant glass.
Description
technical field [0001] The invention relates to a preparation method of superhydrophobic wear-resistant glass, belonging to the field of preparation of hydrophobic materials. Background technique [0002] The lower the free energy of the solid surface, the lower the adhesion force, resulting in a larger solid-liquid contact angle. However, even a smooth surface with the lowest surface energy has a contact angle of only 119° for water. Silicone containing long-chain fluorine-containing groups is a class of substances with very low surface free energy. US6395331 discloses that the contact angle of long-chain fluorocarbons and fluorocarbon self-assembled monolayer films to water is less than 120°. When the angle is less than 120°, the solid surface has hydrophobic ability, but water or stains tend to remain on the surface, and the self-cleaning effect is poor. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the d...
Claims
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Application Information
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