Rosin glycerin ester(RO-GL) was used to modify polyurethane to improve the performance of polyurethane resin(PU). Modified polyurethane resin(RO-GL PU) was prepared by isocyanate and RO-GL which prepared by rosin and glycerol. The properties and structure were invesigated by FI-IR
TG and contact angle measurement. And the fineness
viscosity and adhesion on the plastic film of the ink prepared from modified polyurethane resin were studied. The experimental results showed that RO-GL could greatly enhance the thermal stability of PU and the wettablity and dispersion copper phthalocyanine(CuPc) in PU. The thermal degradation temperature of PU at mass loss 5% was increased from 305.2℃ to 329.8℃.The minimum RO-GL PU contact angle was only 37.8°
the ink fineness was10μm. And the ink had good fluidity