酸处理对纤维表面偶联剂吸附量的影响

Effect on Coupling Agent Adsorption of Basalt Fiber With Acid Treatment

对玄武岩纤维表面进行酸刻蚀处理并浸泡铝锆偶联剂溶液,探讨酸浓度、酸处理时间和偶联剂浓度对玄武岩纤维表面偶联剂吸附量的影响。通过FTIR和XPS分别定性和定量地分析纤维表面官能团及C、O、Si、Zr元素的变化来表征纤维表面偶联剂的吸附量。结果表明:三因素对纤维表面偶联剂吸附量的影响程度由大到小依次为酸浓度、偶联剂浓度和酸处理时间。随着酸浓度升高,纤维表面偶联剂吸附量呈现出先减小后增大的趋势;酸处理时间延长和偶联剂浓度增大,纤维表面偶联剂的吸附量呈现逐渐增大的趋势。当酸浓度为3 mol/L、处理1.5 h、偶联剂浓度为3wt%时,偶联剂在玄武岩纤维表面的吸附量最大。

We studied the effect of acid etching on basalt fiber surface. We designed three factors （ concentra- tion of hydrochloric acid, etching time of hydrochloric acid and concentration of coupling agent） to finish this work. The chemical changes （function groups and chemical elements containing C, O, Si, Zr）on basalt fibers were analysised by FTIR and XPS. It is concluded that concentration of hydrochloric acid affected the coupling agent adsorption more than etching time and coupling agent concentration. With the increasement of hydrochloric acid concentration, the ad- sorption quantity on fiber surface increased first and decreased then. And we also found that zircon aluminates cou- pling agent absorption increased with the hydrochloric acid treatment time and coupling agent concentration. When hy- drochloric acid treatment time is 1.5 h and zircon aluminates coupling agents concentration was 3wt%, the values of Zr/Si reached the maximum respectively.