摘要
用差示扫描量热(DSC)和热重分析(TGA)研究了微波辐射改性废胶粉(WRP)、偶联剂改性空心玻璃微珠(HGM)和有机改性蒙脱土填充环氧树脂.扫描电镜观察复合材料冲击断口形态.结果表明,废胶粉的粒径大小对复合材料的力学性能影响较大.少量合适粒径的微波改性WRP可以提高环氧树脂复合材料的冲击强度,适量的改性HGM可以提高复合材料的Tg和弯曲强度,并改善复合材料的热稳定性.有机改性蒙脱土环氧树脂复合材料呈现韧性断裂,断面精细和高的树脂基体与改性HGM界面粘结.
Epoxy composites filled by microwave radiation modified waste rubber powder （WRP）,coupling agent modified hollow glass microspheres （HGM） and organo-modified clay were investigated by differential scanning calorimetry （DSC） and thermogravimetric analysis （TGA）. Scanning electron microscope （SEM） was used to observe the morphology of the impact fractural surface. The results indicated that the sizes of WRP had remarkably effects on the mechanical properties of the composites. The impact strength of the epoxy composites was enhanced by adding small amount of suitable sizes of modified WRP. The Tg,flexural strength and thermal stability were increased by adding small quantity of modified HGM. The fractural surface of the epoxy composites with organo-modified montmorillonite （OMMT） exhibited toughness fracture,finer morphology and higher interfacial adhesion between resin matrix and modified HGM.
出处
《材料研究与应用》
CAS
2010年第4期716-721,共6页
Materials Research and Application
关键词
环氧树脂
废胶粉
空心玻璃微珠
复合材料
epoxy
waste rubber powder
hollow glass microspheres
composite
