Cross-linked Polyamides Prepared through Direct Bulk Michael Addition and Polycondensation from 1,6-Hexanediamine and Methyl Acrylate  

作　　者：Sheng-Qing Yang Jin-Nan Zhao Jing-Bo Zhao Zhi-Yuan Zhang Jun-Ying Zhang 

机构地区：[1]Key Laboratory of Carbon Fiber and Functional Polymers(Beijing University of Chemical Technology),Ministry of Education/College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China

出　　处：《Chinese Journal of Polymer Science》2020年第2期143-150,I0006,共9页高分子科学（英文版）

基　　金：financially supported by the Beijing Natural Science Foundation (No. 2182056);the National Natural Science Foundation of China (No. 21244006)

摘　　要：Cross-linked polyamides(c PAs)were prepared through direct bulk Michael addition and subsequent polycondensation.Several mixed hexanediamine multi-esters(HDAMEs)were generated through the Michael addition of 1,6-hexanediamine(HDA)and methyl acrylate(MA)at50℃ with different HDA/MA molar ratios.Melt polycondensation of HDAMEs then proceeded at 150 or 170℃ in flasks to obtain viscous fluids,and curing was continued in tetrafluoroethylene molds to obtain c PA films.The Michael addition was monitored on the basis of FTIR and ESI-MS spectra.The c PA films were characterized by DSC,TGA,dynamic mechanical analysis,and tensile test.These directly prepared c PAs exhibited Tg of 1–39℃,tensile strength of up to 45 MPa,and strain at break from 18%to 40%.The c PAs with high tensile strength and good toughness were successfully synthesized through the direct bulk Michael addition from HDA and MA followed with polycondensation.Cross-linked polyamides(c PAs) were prepared through direct bulk Michael addition and subsequent polycondensation. Several mixed hexanediamine multi-esters(HDAMEs) were generated through the Michael addition of 1,6-hexanediamine(HDA) and methyl acrylate(MA) at50 °C with different HDA/MA molar ratios. Melt polycondensation of HDAMEs then proceeded at 150 or 170 °C in flasks to obtain viscous fluids,and curing was continued in tetrafluoroethylene molds to obtain c PA films. The Michael addition was monitored on the basis of FTIR and ESI-MS spectra. The c PA films were characterized by DSC, TGA, dynamic mechanical analysis, and tensile test. These directly prepared c PAs exhibited Tg of 1–39 °C, tensile strength of up to 45 MPa, and strain at break from 18% to 40%. The c PAs with high tensile strength and good toughness were successfully synthesized through the direct bulk Michael addition from HDA and MA followed with polycondensation.

关 键 词：Michael addition POLYCONDENSATION Mechanical properties 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]