摘要
利用聚醚砜(PES)增韧TDE-85环氧树脂(简称TDE-85),通过扫描电子显微镜、动态热机械分析仪、差示扫描量热仪及傅里叶红外光谱仪等仪器研究了PES含量对TDE-85/PES复合体系微观形貌、力学性能和热性能的影响。结果表明,加入一定量的PES可提高TDE-85的力学性能和耐热性能,当PES的质量分数为8.00%时,TDE-85/PES复合体系的拉伸强度、断裂伸长率和冲击强度最大分别提高了20.60%、29.29%和44.20%;TDE-85/PES复合体系为两相结构,分散相PES呈不规则的变形颗粒分散在TDE-85中,PES增韧作用是由PES与TDE-85在固化过程中形成半互穿网络和压力下分散的PES微粒的变形所引起的。
Epoxy resin was toughened using polyether sulfone （PES） forming TDE-85/PES composite systems. The effect of PES on the thermo-mechanical properties of the composite was studied using SEM, DMA, DSC, and FTIR. It showed that the mechanical strength and glass transition temperature （Tg） of the epoxy resin was improved obviously by adding PES. When the mass content of PES was 8.00 %, the tensile strength, elongation at break, and impact strength of TDE-85/PES composites were increased by 20. 60 %, 29. 29 ~, and 44. 20 %, respectively. Micro-morphological study showed that the TDE-85/PES system possessed a two phase structure. The deformed PES particles were dispersed in the epoxy resin matrix. The toughening effect of PES was caused by the formation of an S-IPN in TDE-85/PES system, and the deformed PES particles in the epoxy matrix under high stresses.
出处
《中国塑料》
CAS
CSCD
北大核心
2013年第11期28-33,共6页
China Plastics
基金
国家高技术研究发展计划(863计划)重点资助项目(2009AA035002)
关键词
聚醚砜
环氧树脂
增韧
微观形态
力学性能
polyether sulfone
epoxy resin
toughening
morphology
mechanical property
