A kind of hydrophobically modified diatom frustule material, its preparation method and application, and its hydrophobic component
A technology of hydrophobic modification and diatom frustules, which can be used in biocide-containing paints, antifouling/underwater coatings, epoxy resin coatings, etc., and can solve problems such as easy pollution, short service life, and low surface microstructure strength , to achieve the effect of improving hydrophobicity, increasing hydrophobicity, and excellent hydrophobicity
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preparation example 1
[0062] A hydrophobically modified diatom frustule material, the preparation method of which is as follows:
[0063] (1) Preparation of diatom frustules:
[0064] Diatoms were sintered in a muffle furnace at a temperature of 600° C. for 3 hours, and the atmosphere was dry air, and 10 g of diatoms were sintered to obtain diatom frustules.
[0065] (2) Preparation of acidified diatom frustules:
[0066] 5 g of diatom frustules were added to 100 mL of 1 mol / L hydrochloric acid solution, stirred at room temperature for 12 hours, then washed with deionized water and dried to obtain acidified diatom frustules.
[0067] (3) Preparation of hydrophobically modified diatom frustule material:
[0068] 5g of acidified diatom frustules and 1g of 1H,1H,2H,2H-perfluorooctyltriethoxysilane were stirred and reacted in 50mL of deionized water at room temperature for 12h to obtain hydrophobically modified diatom frustule materials.
preparation example 2
[0070] A hydrophobically modified diatom frustule material, the preparation method of which is as follows:
[0071] (1) Preparation of diatom frustules:
[0072] The diatoms were sintered in a muffle furnace at a temperature of 700° C. for 2 hours, the atmosphere was dry air, and 10 g of diatoms were sintered to obtain diatom frustules.
[0073] (2) Preparation of acidified diatom frustules:
[0074] 10 g of diatom frustules were added to 100 mL of 2 mol / L sulfuric acid solution, stirred at room temperature for 15 h, then washed with deionized water and dried to obtain acidified diatom frustules.
[0075] (3) Preparation of hydrophobically modified diatom frustule material:
[0076] 10 g of acidified diatom frustules and 1 g of heptadecafluorodecyltrimethoxysilane were stirred and reacted in 100 mL of deionized water at room temperature for 15 h to obtain a hydrophobically modified diatom frustule material.
Embodiment 1
[0078] A hydrophobic component, the preparation method is as follows:
[0079] (1) Preparation of adhesive layer solution:
[0080] The bisphenol A type epoxy resin (E44) that gets 1g is dissolved in the glass bottle that contains 4g acetone, and magnetic force stirs 10min to form uniform solution; Then 0.2g acidified diatom frustules (preparation example 1 provides) is added in the above-mentioned solution, magnetic force Stir for 10 minutes, then add 0.33 g of polyetheramine (D230) and stir evenly, and finally ultrasonicate for 10 minutes to obtain a bonding layer solution.
[0081] (2) Preparation of hydrophobic layer solution:
[0082] Mix 0.4 g of the hydrophobically modified diatom frustule material prepared in Preparation Example 1 with 6 g of ethanol, stir for 10 min and ultrasonically treat for 10 min to obtain a hydrophobic layer solution;
[0083] (3) Preparation of hydrophobic components
[0084] Take 25×65mm with a thickness of 1mm 2 Spray 1mL of the adhesive ...
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