烷基磷酸铝催化合成三元不饱和聚醚橡胶的研究  

Synthesis of ternary unsaturated polyether rubber catalyzed by aluminum alkyl phosphate

作　　者：申艾佳 屈甜甜 张春阳 郭方 SHEN Aijia;QU Tiantian;ZHANG Chunyang;GUO Fang(Department of Polymer Science and Engineering,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学化工学院,辽宁大连116024

出　　处：《合成树脂及塑料》2025年第2期6-10,共5页China Synthetic Resin and Plastics

摘　　要：以烷基磷酸铝[i-Bu_(3)Al/H_(3)PO_(4)/1,8-二氮杂二环十一碳-7-烯(DBU)]为催化剂催化环氧氯丙烷(ECH)、环氧丙烷(PO)分别与环氧乙烷(EO)、烯丙基缩水甘油醚(AGE)共聚合,制备了三元不饱和聚醚橡胶,并研究了其微观结构和热性能。结果表明:在室温甲苯溶剂中,i-Bu_(3)Al/H_(3)PO_(4)/DBU催化剂可高效催化不同比例的ECH,EO,AGE及PO,EO,AGE的共聚合,均以100%收率获得组成精确可控的三元不饱和聚醚橡胶。不同组成的氯醚橡胶(ECH-EO-AGE三元共聚物)和环氧丙烷橡胶(PO-EO-AGE三元共聚物)均具有高相对分子质量窄分布的特点。ECH-EO-AGE和PO-EO-AGE为三元无规共聚物。不同组成的ECH-EO-AGE只有1个低于-38℃的玻璃化转变温度;不同组成的PO-EO-AGE只有一个-72℃的玻璃化转变温度。The copolymerization of epichlorohydrin(ECH)with ethylene oxide(EO)and allyl glycidyl ether(AGE)and that of propylene oxide(PO)wtih EO and AGE were catalyzed by i-Bu_(3)Al/H_(3)PO_(4)/1,8-diazabicyclo[5,4,0]undec-7-ene(DBU)to prepare ternary unsaturated polyether rubber,whose microstructures and thermal properties were characterized.The results show that the copolymerization of EO,ECH,and AGE as well as PO,EO,and AGE in different ratios is successfully achieved at room temperature with i-Bu_(3)Al/H_(3)PO_(4)/DBU in toluene to obtain ternary unsaturated polyether rubbers with 100%of yield with controllable compositions.Chlorinated polyether rubbers(ECH-EO-AGE)and propylene oxide rubbers(PO-EO-AGE)with different compositions demonstrate high relative molecular mass and narrow distribution.ECH-EO-AGE and PO-EO-AGE are ternary random copolymers.The glass transition temperature of ECH-EO-AGE and PO-EO-AGE with different compositions are below-38℃and-72℃,respectively.

关 键 词：聚醚橡胶 氯醚橡胶 环氧丙烷橡胶 环氧乙烷 相对分子质量 

分 类 号：TQ333.96[化学工程—橡胶工业]