Effect of electrolyte in silicone oil-in-water emulsions stabilised by fumed silica particles

2007 ◽  
Vol 9 (48) ◽  
pp. 6398 ◽  
Author(s):  
Tommy S. Horozov ◽  
Bernard P. Binks ◽  
Torsten Gottschalk-Gaudig
Keyword(s):  
Fumed Silica ◽  
Silicone Oil ◽  
Silica Particles ◽  
Oil In Water

Mechanical Property Improvement of Poly(Butylene Succinate) by Reinforcing with Modified Fumed Silica

2014 ◽  
Vol 1025-1026 ◽  
pp. 215-220 ◽  
Author(s):  
Sasirada Weerasunthorn ◽  
Pranut Potiyaraj
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Fumed Silica ◽  
Tensile Modulus ◽  
Silica Particles ◽  
Melt Mixing ◽  
Butylene Succinate ◽  
Ir Spectrophotometry

Fumed silica particles (SiO2) were directly added into poly (butylene succinate) (PBS) by melt mixing process. The effects of amount of fumed silica particles on mechanical properties of PBS/fumed silica composites, those are tensile strength, tensile modulus, impact strength as well as flexural strength, were investigated. It was found that the mechanical properties decreased with increasing fumed silica loading (0-3 wt%). In order to increase polymer-filler interaction, fumed silica was treated with 3-glycidyloxypropyl trimethoxysilane (GPMS), and its structure was analyzed by FT-IR spectrophotometry. The PBS/modified was found to possess better tensile strength, tensile modulus, impact strength and flexural strength that those of PBS/fumed silica composites.

Performance of Polishing Slurries containing Silica Particles grown by Sol-Gel Method

2000 ◽  
Vol 613 ◽  
Author(s):  
Sun Hyuk Bae ◽  
Jae-Hyun So ◽  
Seung-Man Yang ◽  
Do Hyun Kim
Keyword(s):  
Fumed Silica ◽  
Sol Gel ◽  
Particle Growth ◽  
Silica Particles ◽  
Gel Method ◽  
Sol Gel Method ◽  
Irregular Shapes ◽  
Wafer Polishing ◽  
Transmission Electron ◽  
Silica Slurry

ABSTRACTSilica slurry used as abrasives in wafer polishing process is made by dispersing silica particles in an alkali solution. Since commercially available colloidal or fumed silica particles need some modifications to be directly used as abrasive slurry due to their small sizes, irregular shapes or broad size distribution, we have prepared silica abrasives by particle growth of fumed silica or colloidal silica as seeds by sol-gel method. Silica slurries prepared by this step-wise growth from commercial seeds were tested using one-armed polisher for the comparison with commercial slurries and showed the performance comparable to commercial slurries. Microstructures of polishing slurries were investigated using transmission electron microscopy and ARES rheometer. From the result, stability of the slurry was found to be more important than the primary particle sizes for the polishing performance.

On the effectiveness of incorporating shear thickening fluid with fumed silica particles in hip protectors

2017 ◽  
Vol 27 (1) ◽  
pp. 015021 ◽  
Author(s):  
A Haris ◽  
B W Y Goh ◽  
T E Tay ◽  
H P Lee ◽  
A V Rammohan ◽  
...  
Keyword(s):  
Fumed Silica ◽  
Shear Thickening ◽  
Silica Particles ◽  
Shear Thickening Fluid ◽  
Hip Protectors

Preparation of a synergistically stabilized oil-in-water paraffin Pickering emulsion for potential application in wood treatment

Holzforschung ◽  
2018 ◽  
Vol 72 (6) ◽  
pp. 489-497 ◽  
Author(s):  
Jun Jiang ◽  
Jinzhen Cao ◽  
Wang Wang ◽  
Haiying Shen
Keyword(s):  
Mechanical Properties ◽  
Cell Wall ◽  
Size Distribution ◽  
Droplet Size ◽  
Surface Hardness ◽  
Pickering Emulsion ◽  
Silica Particles ◽  
Morphological Properties ◽  
Pickering Emulsions ◽  
Oil In Water

AbstractPickering emulsions (emulsions stabilized by solid-state additives) are attractive as they have strong similarities with traditional surfactant-based emulsions. In this study, an oil-in-water (O/W) paraffin Pickering emulsion system with satisfying stability and small droplet size distribution was developed by hydrophilic silica particles and traditional surfactants as mixed emulsifiers. The droplet morphology and size distribution were observed by optical microscopy and a laser particle analyzer. The emulsion stability was improved and the droplet size was reduced after addition of a suitable amount of silica particles. The silica concentration of 1% showed the optimal effect among all the levels observed (0.1, 0.5, 1 and 2%). Wood was impregnated with the prepared emulsion, and the chemical and morphological properties of the product were investigated by Fourier-transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM) combined with energy-dispersed X-ray analysis (SEM-EDXA). Moreover, the hydrophobicity, thermal properties, surface hardness, axial compression strength (CS) and dynamic mechanical properties were tested. The silica was evenly distributed in the wood cell wall and thus there was a synergistic positive effect from the paraffin and silica in the cell wall leading to better hydrophobicity, improved surface hardness and mechanical properties including the thermal stability.

scholarly journals Nano Fumed Silica Particles on Cement Properties

2020 ◽  
Vol 525 ◽  
pp. 012149
Author(s):  
Zhi Li ◽  
Yanmin Wang ◽  
Yanling Wu
Keyword(s):  
Fumed Silica ◽  
Silica Particles

Jet swelling of concentrated silicone oil‐in‐water emulsions

1993 ◽  
Vol 37 (6) ◽  
pp. 1171-1180
Author(s):  
D. H. Fruman ◽  
J. L. Zakin ◽  
F. Li ◽  
A. Makria
Keyword(s):  
Silicone Oil ◽  
Oil In Water

Preparation and Flow Behaviour of Oil-In-Water Emulsions Stabilised by Hydrophilic Silica Particles

2009 ◽  
Vol 32 (7) ◽  
pp. 1107-1112 ◽  
Author(s):  
B. Braisch ◽  
K. Köhler ◽  
H. P. Schuchmann ◽  
B. Wolf
Keyword(s):  
Silica Particles ◽  
Flow Behaviour ◽  
Oil In Water

Aging Effects in Suspensions of Silica Particles

2003 ◽  
Vol 790 ◽  
Author(s):  
Seila Selimovic ◽  
Yue Hu
Keyword(s):  
Viscoelastic Properties ◽  
Silicone Oil ◽  
Mineral Oil ◽  
Silica Particles ◽  
Aqueous Samples ◽  
Aging Effects ◽  
Glycerol Water ◽  
Precipitated Silica ◽  
Aging Phenomena ◽  
Silica Suspensions

ABSTRACTIn our study of the aging phenomena in silica suspensions we immersed precipitated silica particles in methyl-terminated PDMS (silicone oil), mineral oil, and glycerol/water and measured their viscoelastic properties as a function of time. We found that the samples based on silicone oil, initially of a pasty consistence, became fluid-like after a period of about three weeks. Aqueous samples aged much faster than the oily samples. Samples containing mineral oil did not exhibit any changes in viscosity and elasticity. In this paper we discuss a possible mechanism for these aging behaviors.

Sign in / Sign up

Export Citation Format

Share Document