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UV curing technology instead of the traditional curing process has become a widely used technique in the development of new products. UV curing has the advantages of low power consumption, high yield, and improve the efficiency of industrial production, so a large number of applications in the industrial coatings, inks and adhesives industry and other fields. UV-curable coatings mainly by an oligomer, the reactive monomer, light initiator system composed. The oligomer is the major component of UV-curable coatings, and determines the coating film properties such as hardness, flexibility, adhesion, etc.. This selection of the oligomer is an unsaturated polyester (UP) and an epoxy acrylate (EA). Unsaturated polyester resin is produced by polycondensation of saturated dihydric alcohols with saturated and unsaturated dibasic acid from the polymer in the reactive monomer (such as styrene) in the solution. Molding diversification been widely used because of its excellent overall performance. The epoxy acrylate oligomer is currently the most widely used, its oligomer UV curable coatings after curing, the coating gloss, hardness, and excellent chemical resistance. Epoxy E-5l UV-curable epoxy acrylate oligomers were synthesized, and their structures were characterized. Designed and prepared a light curing system, wherein the tripropylene glycol diacrylate as reactive diluent, 2,4,6 - trimethyl benzoyl - diphenyl phosphorus oxide as a photoinitiator. Unsaturated polyester and epoxy acrylate oligomer insufficient heat resistance, can not be used in areas of high heat resistance, and the bismaleimide (BMI) is a typical representative of the heat-resistant resin varieties. Therefore, in order to meet the growing needs of the modern industry to UV cured heat-resistant resin, designed and prepared bismaleimide modified UV-curable heat-resistant unsaturated polyester resins and epoxy acrylate resins, and explore the best preparation, system composition - structure - performance relationship law. The results that the pure BMI can not be subjected to UV curing, but the modified system composed of the BMI and the UP and EA UV curing can be achieved, and the formation of the crosslinked network structure. By infrared tracking and monitoring of an unsaturated polyester resin light-curing process and studied the the photoinitiator agent system in the radiation time and the rate of double bond conversion relationship, while testing the adhesion, water resistance, chemical resistance, thermal stability and other properties . The results show that the BMI Add so that its water resistance, chemical resistance, have been greatly improved, while the BMI added to improve the thermal degradation temperature of the system.
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