关键词:

光引发剂, 接枝, 丙烯酸酯基环氧树脂, 水性, 紫外线固化

Abstract:

A novel water-borne epoxy acrylic resin (EA)with photoinitiator was synthesized by grafting maleic anhydride (MAH)and a new photoinitiator HTBP prepared by the reaction of 4-hydroxy benzophenone (4-HBP)and 2,4-toluene diisocyanate (TDI）.The structures of HTBP and graft polymers were characterized by H NMR and FTIR spectroscopy.Curing time and adhesion were evaluated according to industrial standard.The film hardness was measured by GB 6739—86 (China）.The thermal properties were characterized by TGA.Adhesion and thermal properties of the grafting system were improved compared with blending system, because of good compatibility between photoinitiaor and resin.Due to the same reason, the hardness of the film could be up to 4H.Above all, the new modified resin could avoid the photolysis fragments that might cause toxicity, which meant less environment pollution and more applications.

Key words:

光引发剂, 接枝, 丙烯酸酯基环氧树脂, 水性, 紫外线固化