Study on New Type of Polyurethane Acrylate Macroonomer and its Polymer

摘要

In the paper, a new type of polyurethane acrylate macromonomer and its polymer materials were studied.A series of low molecular unsaturated polyesters(UPR) with double hydro-terminated were synthesized by using maleic anhydride(MA) and diethylene glycol(DG) or polyethyleneglycol (PEG-400),then a new kind of polyurethane acrylate macromonomer was synthesized by using isophorone diisocyanate(IPDI),hydroxyethyl-methylacrylate(HEMA)and unsaturated polyesters(UPR) through step-growth polymerization method,and a new type of transparent thermosetting polymer material was prepared through curing and crosslmking with this macromonomer.rnThe influences of the content and different kind of UPR on the mechanical,optical, thermodynamics properties of the polymer material were discussed. The results show that materials own excellent performances in spectral transmittance, hardness, impact strength, thermal deformation temperature. To the system of the UPR-2 synthesized with PEG400, for example, its spectral transmittance reaches 90%,its impact strength reaches 4.56KJ/m2, the hardness reaches 119,and the thermal deformation temperature reaches 249℃ when the content of UPR-2 reaches 20.76%.To compare with the common transparent plastic—PMMA, the impact strength is 1.8 times higher than that of PMMA, the hardness is 1.3 times higher than that of PMMA, What is more, its thermal deformation temperature is 150℃ higher than that of PMMA and can be applied to the special optical fields such as high temperature resistance and impact resistance.