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Jul 5, 2023
A polyorganosiloxane/polyacrylate coating with IPN structure was prepared using methyl triethoxysilane and ethyl orthosilicate to prepare an interpenetrating polymer network coating. This coating has the characteristics of transparency, high hardness, strong adhesion, aging resistance, and excellent breathability, making it an excellent stone carving weathering resistant material, It can avoid the "protective" damage caused by the single use of organic silicon or acrylate coatings. At 80 ° C, it is slightly acidic (pH=4) In the lotion system of, the ring opening polymerization of the silicone monomer D4 and the acrylate radical polymerization are carried out step by step to form a synchronous interpenetrating network polymer. The composite film has good hydrophobicity, solvent resistance and high and low temperature resistance.
The polymer lotion can be used for leather finishing, improving the touch of the coating and enhancing the brightness of the coating. Half interpenetrating network type (SIPN) silicone/acrylate lotion was studied. It was considered that the pre emulsification method was the best method to synthesize silicone acrylic resin IPN. The effect of silicone content on polymerization reaction and film properties was studied. The interpenetrating polymer networks of polydimethylsiloxane (PDMS) and polymethylacrylic acid (PMAA) were obtained using monomer impregnation and air interpenetrating network interface methods, and their structures and network structures were characterized.