复合材料科学与工程Issue(9)：35-41,54,8.DOI:10.19936/j.cnki.2096-8000.20250928.005
纳米碳酸钙改性前端聚合双环戊二烯树脂性能研究
Effects of nano calcium carbonate on the properties of frontal-polymerized dicyclopentadiene resin
摘要
Abstract
This study was systematically conducted to investigate the effects of nano-CaCO3 modification on the processing,thermal stability,and mechanical properties of frontal-polymerized dicyclopentadiene(DCPD)resin.The results demonstrate that the incorporation of nano-CaCO3 significantly optimized the processing window of DCPD resin.Thus,the initial curing temperature and peak curing temperature are decreased by 16.16℃and 13.92℃,respectively,while the room-temperature gelation time extends beyond 2.5 h.Furthermore,as nano-CaCO3 sup-pressed the mobility of molecular chain,the glass transition temperature(Tg)is elevated to 127.9℃,which is a 33.79%increase over that of the pure resin.Mechanically,the flexural strength,tensile modulus,and impact strength are improved to 60.53 MPa,1.90 GPa and 4.84 kJ/m2 with the optimal nano-CaCO3 content(3wt%～4wt%),representing improvements of 13.27%,57.02%and 9.09%,respectively.However,due to the stress con-centration caused by the agglomeration of nano-CaCO3 particles at high content(>5wt%),the mechanical properties of the DCPD resin are degraded.This work could provide insights for designing high-performance frontal-polymer-ized polymer composites with tailored processability and thermal-mechanical properties.关键词
纳米碳酸钙/前端聚合/聚双环戊二烯/耐热性能/力学性能/工艺性能/复合材料Key words
Nano-CaCO3/frontal polymerization/dicyclopentadiene resin/thermal stability/mechanical prop-erties/process optimization/composites分类
通用工业技术引用本文复制引用
李科辉,张月尧,宋龙杰,杨莉玲,陈丁丁,邢素丽,尹昌平,唐俊..纳米碳酸钙改性前端聚合双环戊二烯树脂性能研究[J].复合材料科学与工程,2025,(9):35-41,54,8.基金项目
国防科技大学空天科学学院青年人才自主研究培育项目(KY0505072210) （KY0505072210）
