We studied the effect of acid etching on basalt fiber surface. We designed three factors (concentra鄄
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鄄
sorption quantity on fiber surface increased first and decreased then. And we also found that zircon aluminates cou鄄
pling agent absorption increased with the hydrochloric acid treatment time and coupling agent concentration. When hy鄄
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.