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Preparation and properties of epoxy/SiO2nanocomposite
From:互联网    Date:2013/6/5    Hits:6535

Preparation and properties of epoxy/SiO2nanocomposite materials bycationic photopolymerization and sol-gel process

 

LI Zhen-jiang1LIANG Wei ZHANG Lin2

1.School of Material Science and EngineeringSouthwest University ofScience and TechnologyMianyang 621010China2.Research Center of Laser FusionChina Academy of Engineering PhysicsMianyang 621900China3.Joint Laboratory for Extreme Condition Matter PropertiesSouthwest University of Scienceand Technology and Research Center of Laser FusionCAEPMianyang 621010China

AbstractUV-curable epoxySiO2 nanocomposite materials were prepared by using tetraethyl orthosilicateTEOSas inorganic precursor3-methacryloxypropyltrimethoxysilaneGPTSas coupling agent6-hexanediol diglycidyl etherHDGEas polymerizable monomer and triphenylsulfonium hexafluorophosphate saltPI-432as photo initiator through  dual-cure process involving cationic photopolymerization of epoxy groups andsubsequent condensation of alkoxysilane groups.The structuresthermal and optical properties of nanocomposite materials were characterized by XRDXPSDSCTGA and UV-Vis spectral spectrometer.The resultsshowed that in-situ generated nano-SiO2dispersed uniformly in the polymer matrix and the nanocomposite materialsglass transition temperature and thermal decomposition temperature improved  lot compared with pure

HDGEon the other handthe nanocomposite materialsoptical properties is also very good.

 

Key wordscationic photopolymerizationsolgel processnanocomposite materials

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