文献类型：期刊文献

中文题名：The Application of Highly Soluble Amine-terminated Aromatic Polyimides with Pendent Tert-butyl Groups as a Tougher for Epoxy Resin

英文题名：The Application of Highly Soluble Amine-terminated Aromatic Polyimides with Pendent Tert-butyl Groups as a Tougher for Epoxy Resin

作者：Qing Zhao[1];王幸宜[1];扈艳红[2]

机构：[1]Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology;[2]Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology

年份：2015

卷号：33

期号：10

起止页码：1359

中文期刊名：Chinese Journal of Polymer Science

外文期刊名：高分子科学（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2015_2016】；

基金：financially supported by the Shanghai key R&D Program(No.DZ1100105)

语种：中文

中文关键词：Polyimide; Epoxy resin; Solubility; Impact strength.

外文关键词：Polyimide; Epoxy resin; Solubility; Impact strength.

摘要：Polyimides （PIs） with various molecular weights synthesized via the reaction of aromatic diamine monomer containing tert-butyl groups with aromatic dianhydride were highly soluble in common organic solvents and some epoxy resins at room temperature. These PIs can be incorporated in the absence of organic solvent into epoxy resin E51 with the loading below 2 wt% forming EP-PI composites. No phase separation is observed by SEM on cryogenically fractured surfaces of EP-PI composites. The PI can improve mechanical properties, especially impact strength. Adding 2 wt% PI-1.5W, the impact strength reaches to 55 kJ/m^2 with the increase in tensile and flexural strengths by 14% and 3%, respectively. SEM analyses for the fracture surface suggest that PI reduces the crosslink density, improves the plasticity of epoxy resin and changes the mode of fracture from fragile to ductile. Moreover, the glass transition temperature of EP-PI composites was found to increase to a significant extent.
Polyimides （PIs） with various molecular weights synthesized via the reaction of aromatic diamine monomer containing tert-butyl groups with aromatic dianhydride were highly soluble in common organic solvents and some epoxy resins at room temperature. These PIs can be incorporated in the absence of organic solvent into epoxy resin E51 with the loading below 2 wt% forming EP-PI composites. No phase separation is observed by SEM on cryogenically fractured surfaces of EP-PI composites. The PI can improve mechanical properties, especially impact strength. Adding 2 wt% PI-1.5W, the impact strength reaches to 55 kJ/m^2 with the increase in tensile and flexural strengths by 14% and 3%, respectively. SEM analyses for the fracture surface suggest that PI reduces the crosslink density, improves the plasticity of epoxy resin and changes the mode of fracture from fragile to ductile. Moreover, the glass transition temperature of EP-PI composites was found to increase to a significant extent.