PrCl_3催化漆酚干燥成膜的研究  

Study on the dryness of urushiol catalyzed by PrCl_3

作　　者：陈钦慧[1] 林金火[1] 

机构地区：[1]福建师范大学化学高分子研究所,福建福州350007

出　　处：《分子科学学报》2004年第2期58-62,共5页Journal of Molecular Science

基　　金：国家自然科学基金资助项目(A20174005);福建省自然科学基金资助项目(E110022)

摘　　要：　Pr原子特殊的电子层结构使其具有多方面的催化特性.实验发现质量分数为0 7%的PrCl3就可使漆酚(U)于110℃固化成膜的时间从5h降低到1h.用可见分光光度法、电子能谱、紫外和红外光谱等方法研究U在PrCl3作用下的固化成膜历程.结果表明,在Pr(Ⅲ)催化U聚合的过程中首先是U与PrCl3发生配位作用,生成U镨配合物(UPr),然后该配合物分子中的Pr(Ⅲ)催化U聚合成体形结构的高分子化合物.Praseodymium possesses many kinds catalytic propeties due to its special fabric of electronic shell.The experiment showed that 0.7%(weight ratio)PrCl_3 could reduce the dryness time of urushiol to one hour from five hours in 110℃.The dryness mechanism of urushiol catalyzed by PrCl_3 was studied by visible spectrophotometry,XPS,UV and IR.The results showed that urushiol coordinated with PrCl_3 and formed urushiol praseodymium compound.In the film-making process,the double bonds contained in the side chain of the compoucd cross-linked into polymer in the presence of praseodymium(Ⅲ)catalyst.

关 键 词：漆酚 催化剂 氯化镨 配位作用 干燥成膜 交联聚合 体形大分子 涂料 生漆 

分 类 号：TQ631.2[化学工程—精细化工]