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2010•Journal of Shaanxi University of Science & TechnologyRequires access

SYNTHESIS OF NANO-SILICA MODIFIED SILICONE-ACRYLATE EMULSIFIER-FREE EMULSION AND THE PROPERTIES OF ITS FILM

Hou Xiao-qing

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Abstract

Nano-silica modified silicone-acrylate emulsifier-free emulsion was synthesized by emulsifier-free emulsion polymerization and sol-gel technique.The effects of some parameters on the properties of emulsion and film were studied,such as emulsifier,vinysilicone oil and tetraethoxysilane(TEOS).Compared with the conventional emulsion,the emulsifier-free emulsion had better polymerization stability,freeze-thaw stability,and storage stability.The emulsion with good polymerization stability and film with good water-resistance and good mechanical strength were obtained when the mass fraction of was 8% based on the total mass of monomers.The centrifuging stability of emulsion decreased as the dosage of TEOS increased.The incorporation of nano-silica contributed to improvement the thermal stability and water-resistance of the film.

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What this paper is about

Nano-silica modified silicone-acrylate emulsifier-free emulsion was synthesized by emulsifier-free emulsion polymerization and sol-gel technique.The effects of some parameters on the properties of emulsion and film were studied,such as emulsifier,vinysilicone oil and tetraethoxysilane(TEOS).Compared with the conventional emulsion,the emulsifier-free emulsion had better polymerization stability,freeze-thaw stability,and storage stability.The emulsion with good polymerization stability and film with good water-resistance and good mechanical strength were obtained when the mass fraction of was 8% based on the total mass of monomers.The centrifuging stability of emulsion decreased as the dosage of TEOS increased.The incorporation of nano-silica contributed to improvement the thermal stability and water-resistance of the film.

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Available abstract

Nano-silica modified silicone-acrylate emulsifier-free emulsion was synthesized by emulsifier-free emulsion polymerization and sol-gel technique.The effects of some parameters on the properties of emulsion and film were studied,such as emulsifier,vinysilicone oil and tetraethoxysilane(TEOS).Compared with the conventional emulsion,the emulsifier-free emulsion had better polymerization stability,freeze-thaw stability,and storage stability.The emulsion with good polymerization stability and film with good water-resistance and good mechanical strength were obtained when the mass fraction of was 8% based on the total mass of monomers.The centrifuging stability of emulsion decreased as the dosage of TEOS increased.The incorporation of nano-silica contributed to improvement the thermal stability and water-resistance of the film.

Key concepts: Emulsion, Acrylate, Materials science, Emulsion polymerization, Thermal stability, Silicone, Silicone oil, Chemical engineering

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SYNTHESIS OF NANO-SILICA MODIFIED SILICONE-ACRYLATE EMULSIFIER-FREE EMULSION AND THE PROPERTIES OF ITS FILM — Research Paper | ScholarLens