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Effect of Wet Surface Treated Nano-SiO_2 on Mechanical Properties of Polypropylene Composite 被引量:2

Effect of Wet Surface Treated Nano-SiO_2 on Mechanical Properties of Polypropylene Composite
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摘要 Nano-SiO2/polypropylene composite was prepared by melt-blending process. The nano-SiO2 particles were organized by wet process surface treatment with silane coupling agent KH-570. The effect of mass fraction of nano-SiO2 particles and dosage of KH-570 on the toughening and strengthening of PP matrix were investigated based on the fractography of impact notch and the analysis of crystal structure by X-ray and dispersive structure of nano-SiO2 by TEM. Results show that the impact and flexural strength and modulus of the composite are improved obviously with low loading of nano-SiO2 (3 wt%-5 wt%), and the izod impact strength of PP increases twice with 4 wt% nano-SiO2. The nano-SiO2 particles treated can disperse into the matrix resin, which has evident heterogeneous nucleation effects on the crystallization of PP. The optimal toughening and strengthening effects of PP matrix can be obtained when the content of nano-SiO2 and KH-570 are 4 wt% and 3 wt%, respectively. Nano-SiO2/polypropylene composite was prepared by melt-blending process. The nano-SiO2 particles were organized by wet process surface treatment with silane coupling agent KH-570. The effect of mass fraction of nano-SiO2 particles and dosage of KH-570 on the toughening and strengthening of PP matrix were investigated based on the fractography of impact notch and the analysis of crystal structure by X-ray and dispersive structure of nano-SiO2 by TEM. Results show that the impact and flexural strength and modulus of the composite are improved obviously with low loading of nano-SiO2 (3 wt%-5 wt%), and the izod impact strength of PP increases twice with 4 wt% nano-SiO2. The nano-SiO2 particles treated can disperse into the matrix resin, which has evident heterogeneous nucleation effects on the crystallization of PP. The optimal toughening and strengthening effects of PP matrix can be obtained when the content of nano-SiO2 and KH-570 are 4 wt% and 3 wt%, respectively.
出处 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2008年第3期354-357,共4页 武汉理工大学学报(材料科学英文版)
基金 Funded by the Commission of Science Technology and Industry for National Defense(No.93013)
关键词 NANO-SIO2 silane coupling agent wet process surface treatment POLYPROPYLENE mechanical properties nano-SiO2 silane coupling agent wet process surface treatment polypropylene mechanical properties
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参考文献14

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