Preparation of hollow silica beads via soft template calcinating route |
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Authors: | Xiangfeng Wu Huiran Lu Zhiqiang Wang Xinhua Xu |
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Institution: | (1) School of Materials Science and Engineering, Tianjin University, 300072 Tianjin, China;(2) Shanxi Research Center of Engineering Technology for Engineering Plastics, North University of China, 030051 Taiyuan, China; |
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Abstract: | Heat treated hollow silica beads have been prepared via a two-step method: the fast synthesis of mesoporous hollow silica
beads via soft template method and the closing of the porosity of as prepared hollow silica beads in a vertical furnace at
more than 1,000 °C. The experiment results showed that the size of the as prepared hollow silica beads was greatly affected
by the size of the octylamine vesicles, which increased as the mixing rate decreased, and the optimal synthesis time was 5 min.
Fourier transform-infrared spectroscopy results indicated that the soft template was incorporated in as prepared hollow silica
beads. The optical photographs and the X-ray diffraction results indicated that the shell of as prepared hollow silica beads
was fully densified in the high temperature furnace. In addition, the morphology observation of polypropylene/polyolyaltha
olfin/heat treated hollow silica beads ternary composites indicated that this type of silica beads possessed high intensity
and strength to blend with the polypropylene/polyolyaltha olfin composites. |
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