Preparation and Properties Fluoralkylpolysiloxane Modified Polyurethane Films
Fluoralkylpolysiloxane modified Polyurethane (FSPU) films with high water contact angle (CA) were prepared. fluoralkylpolysiloxane was obtained using perfluoro octyl sulfuryl fluoride and terminal amino-silicone oil as reactants. Then, the isocyanate end capped PU prepolymer was synthesized by reacting isocyanate with a soft segment mixed by active amino-end-capping fluoralkylpolysiloxane and polyether glycol. The fluoralkylpolysiloxane modified PU films were obtained after the PU prepolymer was cured by 3,3 '- dichloro -4,4' – amino - diphenyl methane (MOCA). The results showed that the modified polyurethane with 10% (mass fraction) PFATPS had a good compatibility, low surface energy, surface water contact angle and surface oil contact angle was improved by 49° and 37° respectively, and heat resistance, water resistance was apparently improved.
Hyungsun Kim, JienFeng Yang, Tohru Sekino and Soo Wohn Lee
R. Weng et al., "Preparation and Properties Fluoralkylpolysiloxane Modified Polyurethane Films", Materials Science Forum, Vols. 620-622, pp. 741-744, 2009