知识与财富的链接
利用纳米SiO2对氰酸酯树脂(CE)进行改性。结果表明,适量的纳米SiO2可提高CE/纳米SiO2复合材料的冲击强度和弯曲强度;选用不同分子尺寸的偶联剂KH-560和SCA-3对纳米SiO2进行表面处理,扫描电镜(SEM)表明,纳米SiO2经偶联剂处理后CE/纳米SiO2复合材料的静态力学性能、动态力学性能都得到了不同程度的提高,特别是经SCA-3处理后的效果更加明显,偶联剂的加入改善了纳米SiO2在CE中的分散状态,使纳米SiO2与CE之间的界面结合强度进一步提高。
CE was modified by nanometer SiO2.The results showed that proper content of SiO2 could improve the impact strength and flexaral strength of composites.Various molecule size of coupling agent KH560 and SCA-3 were employed to modify nanometer SiO2 surface.The SEM photos showed that the static mechanical and dynamic mechanical properties of CE/nanometer SiO2 composites were improved after the modification of nanometer SiO2 by coupling agent,especially by SCA-3.The adding of coupling agents improved the dispersity of nanometer SiO2 in CE and the interface bound strength of nanometer SiO2 and CE.
