中文摘要：

以环氧树脂E53与丙烯酸为原料合成了乙烯基酯,并分别与光活性交联单体甲基丙烯酸羟乙酯（HEMA）、1,6-己二醇二丙烯酸酯（HDDA）、三羟甲基丙烷三丙烯酸酯（TMPTA）及苯乙烯（St）配制成光固化乙烯基酯树脂,采用FT-IR、UV吸收光谱对乙烯基酯的分子结构和吸光性能进行了表征,使用旋转粘度计、紫外光固化箱、万能试验机研究了4种交联单体以及光引发剂对乙烯基酯树脂的粘度,光固化试样厚度及其光固化树脂弯曲性能与硬度的影响。结果表明,选用2-羟基-2-甲基苯丙酮作引发剂,HEMA添加质量分数为40%时,乙烯基酯树脂综合性能最佳,粘度为0.4 Pa·s,5 min内一次性光固化产物厚度可达8 mm,光照面巴氏硬度为45 H,背光面为33 H,弯曲强度可达98.7MPa,弯曲模量达3.4 GPa。

英文摘要：

The vinyl esters were synthesized with epoxy resin E53 and acrylic acid as the raw materials. The UV-curable vinyl ester resins were prepared with the above product and UV-curable crosslinking monomer hydroxyethyl methacrylate（HEMA）,1,6-hexanediol diacrylate（HDDA）,trimethylolpropane triacrylate（TMPTA） and styrene（St）,respectively. The molecular structure and absorption light properties of the vinyl ester were characterized by FT-IR and UV absorption spectra. The effects of four types of crosslinking monomer on the viscosity of vinyl ester resin,thickness of UV-cured sample and flexural properties and hardness of the UV-cured resin were studied by using rotational viscometer,UV curing chamber and universal testing machine. The results showed that when the mass fraction of HEMA was 40 % and 2-hydroxy-2-methylpropiophenone was used as the initiator, the vinyl ester resin had the best overall performance. The viscosity of the resin was 0.4 Pa·s and the thickness of the UV-cured product could reach 8mm in 5min. The surface hardness was 45 H and the backlight surface hardness was 33 H. The flexural strength was up to98.7 MPa and the flexural modulus was 3.4 GPa.