Where R represents methyl or ethyl group, and R1 represents organic group, which may be methyl, ethyl, phenyl, sulfhydryl, allyl, amine, epoxy group, etc.
When the organic group is methyl, the polysiloxane resin can be given thermal stability, demoulding, hydrophobicity, arc resistance; When the polysiloxane resin is phenyl, the oxidation stability of the polysiloxane resin can destroy the crystallization of the polymer in a certain range.
The reaction took alcohol as the solvent and a small amount of water was added to control the reaction process. Firstly, the alkoxy group components are hydrolyzed to alcohols to form the sol, and then the dry coated sol generates the microporous gel coating. Finally, a high density ceramic coating is formed after high temperature curing.
The flexible ceramic coatings with high performance can be prepared by this kind of technology. The following video illustrates the advantages of flexible ceramic coatings that combine flexibility and ceramic hardness.
application：
Heavy anti-corrosion field: balance of hardness and flexibility, UV resistance, medium resistance
Optical field: similar coating refractive index, up to 7H pencil hardness.
Wood field: reduce the substrate surface energy, reduce water penetration, improve wear resistance; At the same time, it can improve dimensional stability and flame retardancy to prevent the attack of insects (termites). It has the advantage of shielding and transparency.
Antibacterial field: both hard and thin, good transparency, excellent adhesion on a variety of substrates, can graft quaternary amine compounds with the effect of destroying bacterial biofilm, resistant to cleaning.
Additives: improve wear resistance; Reduce the permeability of water (containing fluorosiloxane water barrier increased by more than 90%); Increases surface hardness; Adjust the optical transparency.