| abstract |
The present disclosure relates to an unsaturated polyester resin, preparation method and use thereof. The unsaturated polyester resin is prepared from raw materials of the following parts by mass: prepolymer 50-90 parts; styrene 10-30 parts; methyl methacrylate 5-15 parts; triglycidyl isocyanurate 5-15 parts; the prepolymer is composed of a polyol, a benzene-containing polyacid and an unsaturated polyacid with a molar ratio of (2.2-4.5): (1-1.5): (1-1.5); the molar ratio of hydroxyl groups to carboxyl groups in the prepolymer is (1.0-1.5): 1. The unsaturated polyester resin has both good yellowing resistance and good heat resistance, and the heat distortion temperature is generally higher than 130℃. |