乙酰丙酮铬/三乙胺催化合成环氧豆油丙烯酸酯  

Synthesis UV curable epoxidized soybean oil acrylate using complex catalyst of chromium acetylacetonate and triethylamine

作　　者：魏铭[1] 李艳[1] 徐义[1] 

机构地区：[1]武汉理工大学化学工程学院,湖北武汉430000

出　　处：《热固性树脂》2014年第2期42-45,66,共5页Thermosetting Resin

摘　　要：采用具有协同催化效应的乙酰丙酮铬与三乙胺复配催化合成了可紫外光固的环氧豆油丙烯酸树脂,对影响合成的各因素进行了探讨,并通过红外光谱,核磁共振氢谱,碳谱对合成产物进行了表征。结果表明:复配催化剂m(乙酰丙酮铬)∶m(三乙胺)=2∶1,用量为环氧大豆油与丙烯酸质量的0.3%时具有较高催化活性,n(环氧基)∶n(丙烯酸)=1.1∶1,阻聚剂对甲氧基苯酚的质量分数为0.1%,110℃反应5.5 h,酯化率达95%以上。经紫外光固化涂膜光滑平整,硬度3H,附着力2级,具有较好的柔韧性。The UV curable epoxidized soybean oil acrylate was synthesized using complex catalyst with synergistic catalytic effect of chromium acetylacetonate and triethylamine. The various influence factors on the synthesis were discussed and the products were characterized by IR, I H NMR and 13C NMR. The results showed that the complex catalyst had a high catalytic activity. The esterification rate was over 95 % as the conditions as followed ： m （ chro- mium acetylacetonate）：m （triethylamine） = 2：1 , mass ratio of complex catalyst 0. 3 % （based on the mass of epoxi- dized soybean oil and acrylic acid）, n （epoxy） ： n （ acrylic acid） = 1.1 ： 1, inhibitor p - methoxyphenol amount 0. 1%, reaction temperature 110 ℃ and reaction time 5.5 h. After UV - curing the coating film was smooth and had good flexibility . The hardness and adhesion of the film was 3 H and 2, respectively.

关 键 词：环氧豆油丙烯酸酯 合成 乙酰丙酮铬 三乙胺 复配催化剂 光固化涂料 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]