Open AccessThe Viscosity and Rheology of the Silica Dispersion System with UV Curable Monomers
Author(s) -
Jae-Beom Ahn,
Bong-Sang Cho,
Eui-Sang Yoo,
SiTae Noh
Publication year - 2012
Publication title -
korean chemical engineering research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.168
H-Index - 9
eISSN - 2233-9558
pISSN - 0304-128X
DOI - 10.9713/kcer.2012.50.2.292
Subject(s) - fumed silica , monomer , materials science , chemical engineering , dispersion (optics) , rheology , precipitated silica , solubility , hildebrand solubility parameter , isopropyl alcohol , polymer chemistry , solvent , dispersion stability , hydrophobic silica , composite material , polymer , chemistry , organic chemistry , physics , natural rubber , optics , engineering
We made 8 wt% silica dispersion system with fumed silica and photo curable acrylic monomer by beads mill process. These dispersions could be applied in organic/inorganic hybrid coating systems. These dispersions could be applied in organic/inorganic hybrid coating systems. The 4 species of photo curable acrylic monomer which was presence of hydroxyl group, different solubility parameter, and different molecular size were used in the silica dispersions. Stability of polar solvent, isopropyl alcohol, in silica dispersions was investigated. We investigated the stability of silica dispersions by using steady-state and dynamic rheology. As the monomer has hydroxyl group increased in mono and binary monomer silica dispersions, they showed non flocculated stable sol (loss modulus (G")> storage modulus (G`)). When polar solvent IPA was added into slightly flocculated silica dispersions, they changed to non flocculated stable sol.
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