화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.26, No.3, 136-142, March, 2016
DOI10.3740/MRSK.2016.26.3.136  Export Citation
흄드실리카로부터 제조된 실리카졸의 분산인자 상관성 연구
Correlation Research of Dispersion Factors on the Silica Sol Prepared from Fumed Silica
박민경1, 2, 김훈3, 임형미1, 4, 최진섭2, 김대성1, †
  • 1한국세라믹기술원 에코복합소재센터
  • 2인하대학교 화학·화학공학융합학과
  • 3㈜한테크
  • 4 화학·화학공학융합학과
Min-Gyeong Park1, 2, Hun Kim3, Hyung Mi Lim1, 4, Jinsub Choi2, and Dae Sung Kim1, 4, †
  • 1Eco-Composite Materials Center, Korea Institute of Ceramic Engineering & Technology (KICET), Jinju 52851, Republic of Korea
  • 2Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
  • 3Han Tech Co., Ltd., Gyeonggi-do 15807, Republic of Korea
  • 4, Korea
E-mail:
To study the dispersion factors of silica sol prepared from fumed silica powder, we prepared silica sol under an aqueous system using a batch type bead mill. The dispersion properties of silica sol have a close relationship to dispersion factors such as pH, milling time and speed, the size and amount of zirconia beads, the solid content of fumed silica, and the shape and diameter of the milling impellers. Especially, the silica particles in silica sol were found to show dispersion stability on a pH value above 7, due to the electrostatic repulsion between the particles having a high zeta potential value. The shape and diameter of the impellers installed in the bead mill for the dispersion of fumed silica was very important in reducing the particle size of the aggregated silica. The median particle size (D50) of silica sol obtained after milling was also optimized according to the variation of the size and amount of the zirconia beads that were used as the grinding medium, and according to the solid content of fumed silica. The dispersion properties of silica sol were investigated using zeta potential, turbiscan, particle size analyzer, and transmission electron microscopy.
Keywords:fumed silica;silica sol;dispersion factor;bead mill;milling impeller
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