Abstract
The potassium titanate fibres were synthesized with wet process by the addition of KOH solution to the TiOz gel produced by the reaction between element titanium particles and $H_2O_2$ solution at $50^{\circ}C$. And then they were characterized by XRD, SEM and FT - IR. It was found that potassium titanate fibres were mainly affected by KOH/TiOz mole ratio, synthesis time and aging time in this wet process employed. For $KOH/TiO_2 = 1/1$, synthesizing time 24 hrs, aging time 24 hrs and calcination temperature of TEX>$900^{\circ}C$ for 1 hr, their products were mainly found to be potassium tetratitanate which had thin and long fibres in the range of 10 ~ 20 mm. As the synthesizing time increased and the amount of KOH decreased, potassium tetratitanate was converted into potassium hexatitanate. Also, the length of their fibres became short.
금속티타늄 분말과 $H_2O_2$와의 반응물에 KOH용액을 첨가하는 습식법에 의해 티탄산칼륨 섬유를 합성하고, 합성된 생성물을 XRD, SEM, FT-IR 등에 의해 검토하였다. 습식 합성법의 경우, $KOH/TiO_2$ 몰비, 합성시간, aging 시간등이 주로 최종 생성물에 영향을 주었다. $KOH/TiO_2 = 1/1$, 합성시간 24시간, aging 시간 24시간 및 하소 온도 $900^{\circ}C$에서의 생성물은 주로 potassium tetratitanate이었으며, 10 ~ 20mm의 가늘고 긴 장섬유이었다. 합성시간이 길어질수록, 그리고 KOH량이 적어질수록, potassium tetratitanate는 potassium hexatitanate로 바뀌면서 섬유의 길이는 짧아졌다.