环氧树脂-胺类固化体系微结构的正电子湮没研究

环氧树脂-胺类固化体系微结构的正电子湮没研究 Microstructure of Amine-Cured Epoxy Resins Studied by Positron Annihilation 刘维华 LIU Wei-hua1 1 2 3 first-author 王波 WANG Bo1 1 2 3 郑亚萍 ZHENG Ya-ping2 1 2 3 武汉大学物理科学与技术学院 武汉大学物理科学与技术学院 School of Physics and Technology, Wuhan University School of Physics and Technology, Wuhan University 西北工业大学化学系,湖北,武汉,430072 西北工业大学化学系,湖北,武汉,430072 Department of Chemistry, Northwestern University of Industry Department of Chemistry, Northwestern University of Industry ,陕西,西安,710000 ,陕西,西安,710000 采用正电子湮没寿命谱（PALS）研究固化剂的种类及含量对环氧树脂基体自由体积特性、力学性能和密度的影响.实验结果发现:固化剂的含量与理论值越接近,固化产物的自由体积半径越小,密度越高,力学性能越好.固化剂中的氨基对环氧基发生交联作用的程度,直接影响了固化产物的密度及力学性能. We have applied the technique of positron annihilation lifetime（PAL） spectroslopy to study the nature and the characteristice of amine-cured epoxy resins. The PAL measurement give information a-bout the mean free volume hole size and the distribution of the free volume hole size for the resins. The effects of the different kinds and content of the curing agent on the mechanical properties and the free volume have been disscussed. 正电子湮没 固化剂 环氧树脂 自由体积 positron annihilation curing agent epoxy resin free volume O633.13 国家自然科学基金（29674020）;国家教育部重点课题基金资助 2002-03-01 2021-04-01 3