37results about How to "Excellent hydrophobic function" patented technology

The invention relates to a preparation method for constructing a super-hydrophobic layer on the surface of bamboo / wood by using geothermal water. Firstly, the lignin on the surface of bamboo / wood is treated with NaOH solution, so that the hydroxyl group is exposed on the surface as much as possible, and then it is immersed in methacrylic acid to shrink React in a glyceride solution, and finally deposit calcium carbonate crystals on the surface of bamboo and wood by hydrothermal method, and combine the low surface energy material polydimethylsiloxane to construct an aragonite calcium carbonate surface layer with hydrophobic function on the surface of bamboo / wood. Advantages: 1) NaOH solution is used to remove the lignin components on the surface of bamboo / wood, so that the hydroxyl groups in bamboo / wood are exposed on the surface as much as possible, which is beneficial to the next reaction. 2) Using GMA as the coupling agent, the epoxy group reacts with the hydroxyl group to fix it on the bamboo / wood surface, and the carboxyl group reacts with the Ca 2+ Formation of complexes, by regulating the carboxyl group and Ca 2+ The complexes formed control the growth crystal form and morphology of calcium carbonate. 3) Environmental protection, good biocompatibility, low production cost, and good hydrophobicity.