利用硅烷偶联剂对粉煤灰表面进行接枝改性,使其与粉煤灰发生羟基化反应。通过扫描电子显微镜、傅里叶变换红外光谱仪等分析手段对改性前后粉煤灰进行表征。结果表明:改性粉煤灰的傅里叶红外光谱图中出现了新的特征峰,扫描电子显微镜观察到呈球形的改性粉煤灰表面被呈蠕虫状的硅烷偶联剂完全包覆。这些都说明硅烷偶联剂在粉煤灰表面发生了很好的化学键合,硅烷偶联剂成功接枝在粉煤灰表面。
Graft modification of fly ash surface by silane coupling agent,which was hydroxylated with fly ash.The fly ash before and after modification was characterized by SEM and FT-IR spectroscopy.The results showed that a new characteristic peak appeared in the infrared spectrum of the modified fly ash,and the surface of spherical fly ash was completely covered by worm-like silane coupling agent.This phenomenon showed that silane coupling agent was bound on the surface of fly ash,and silane coupling agent had been successfully grafted on the surface of fly ash.
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基金资助
2017河南省教育厅高等学校青年骨干教师培养基金
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