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Thirty grams of nano-SiO2 particles and 500 g ethanol were added to a high-speed dispersion machine filled with zirconium oxide beads and ground for 1¨C2 h at 4000 rpm. The mixture was filtrated to remove the zirconium oxide beads. Then 4.5 g KH570, which was pre-hydrolysed for 2 h in pH 4.00 ethanol/water (1/9, wt) solution adjusted by acetic acid, was slowly dripped in, then triethylamine was added until the pH reached 9. After 2 h reaction the mixture was filtrated to remove the solvent and then were dried at 120 C for 4 h to further remove the rudimental solvent.
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European Polymer Journal 42 (2006) 1643¨C1652
title: Effects of surface modification of fumed silica
on interfacial structures and mechanical properties
of poly(vinyl chloride) composites

[ Last edited by tigger8376 on 2010-5-17 at 00:42 ]
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