Preparation and property analysis of silicone resin modified castor oil based polyurethane
To enhance the high-temperature resistance of castor oil-based polyurethane(CO-PU),five sili-cone resins were selected to modify CO-PU,resulting in the preparation of silicon-modified castor oil-based polyurethane(Si-CO-PU).Silicone modified castor oil-based polyurethane(Si-CO-PU)was prepared and the effects of different silicone resin types and mass ratio on the properties of the polymer were investiga-ted.Si-CO-PU tensile properties,water contact angle,gloss and liquid medium resistance were tested,and characterized by Fourier transform infrared spectrometer and synchronous thermal analyzer.The results show that when the mass ratio of silicone resin is 12.5％,the comprehensive performance of epoxy silicone resin(SH-023-4)modified CO-PU is relatively good,and the high temperature resistance is the best,which provides research ideas and methods for expanding the application of polyurethane.
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