Preparation of a bionic ultra-oil composite coating.

Inspired by the poor frictional resistance and complex preparation methods of the ultra-oily surface, the friction-resistant super-oil composite coating was successfully prepared by using biodaffamine, schiff alkali reaction and self-assembly.
dopamine contains phenolic hydroxyl that reacts with amine or thiol-based. Polydopamine is a small form of dopamine self-polymerization under aerobic and

. In addition, polydopamine can actually adhere to the surface of all materials.
, the self-polymerization of folic acid induces dopamine to form polypamine micron particles under weak alkaline conditions. Second, 3,5-double (trifluoromethyl) aniline reacts with the phenol hydroxyl reaction of polydolamine nanoparticles through schiff alkali. Ammonium hexafluorosilicate is adsorbed to the surface of the polydopamine microculpherate by electrostectric interaction.
The application of ultra-oil-loose composite coatings on cotton fabrics
and then, the self-assembly behavior of fs-81 and fs-63 and ammonium hexafluorosilicate occurs on polydampamine nanoparticles through electrostectric interaction. As a result, surface roughness increases further, breaking the limitations of traditional methods of layering rough surfaces using additional nanoparticles.
, the ultra-oil composite coating is applied to the surface of the cotton fabric. The results showed that after two self-assembly changes, the contact angle between cotton fabric surface and cooking oil, glycol and glycelycerol was greater than 150 degrees in air. After 25 mechanical wear, the contact angle between the surface of the cotton fabric and the edible oil droplets is still greater than 150 degrees. In addition, after coating, the surface freedom of cotton fabric is reduced by 64.1%.
the study was published in May 2020 on page 142 of The Progress of Organic Coatings.
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