文献类型：期刊文献

中文题名：Grubbs 三代催化剂的合成及其催化双环戊二烯可控成型

英文题名：Synthesis of Grubbs 3rd generation catalysts and their controllable polymerization of bulk dicyclopentadiene

作者：Yang, Weicheng[1,2,3,4]; Liu, Jian[2,3,4]; Ma, Haiyan[1]

机构：[1] School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Shanghai Research Institute of Chemical Industry Co., Ltd., Shanghai, 200062, China; [3] Shanghai Key Laboratory of Catalysis Technology for Polyolefins, Shanghai, 200062, China; [4] State Key Laboratory of Polyolefins and Catalysis Materials, Shanghai, 200062, China

年份：2023

卷号：40

期号：5

起止页码：1015

外文期刊名：Jingxi Huagong/Fine Chemicals

收录：EI(收录号：20232914420521)

语种：中文

外文关键词：Analog differential analyzers - Catalysts - Differential scanning calorimetry - Impact testing - Materials testing apparatus - Polymerization - Synthesis (chemical) - Tensile testing - Thermoanalysis

摘要：Several creative Grubbs catalysts 3rd generation (G3) were synthesized from reaction of Grubbs catalyst 2nd generation (G2) with different pyridine ligands, characterized and confirmed by 1HNMR. The G3 samples obtained then were evaluated for their catalytic performance in the bulk polymerization of dicyclopentadiene (DCPD) via mold casting method, of which the polymerization process was controlled by polymerization inhibitor triphenylphosphine. The effects of polymerization inhibitor, catalyst type and catalyst dosage on the properties of p-DCPD sheet materials were investigated. The p-DCPD sheet materials were characterized by FTIR, TGA and DSC, and their mechanical properties were tested by synchronous thermal analyzer, differential scanning calorimeter, microcomputer controlled electronic universal testing machine and cantilever impact testing machine. The results indicated triphenylphosphine was more effective in the regulation of G3 than in that of G2. G3 exhibited excellent catalytic performance for DCPD bulk polymerization with the mechanical properties of p-DCPD sheet material significantly improved. In particular, the prepared p-DCPD sheet material catalyzed by benzomethylene-[1,3-bis(trimethylphenyl)-2-imidazoline subunit]-dichloro-bis(3-methylpyridine)ruthenium (G3-5) displayed better thermal stability and compacts cross-linking structure. ? 2023 Fine Chemicals. All rights reserved.