| 纳米SiO2对聚对苯二甲酸乙二酯结晶行为及性能的影响 |
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| 引用本文： | 孔智明;罗春明;唐安斌.纳米SiO2对聚对苯二甲酸乙二酯结晶行为及性能的影响[J].中国塑料,2011,25(4):42-45. |
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| 作者姓名： | 孔智明;罗春明;唐安斌 |
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| 作者单位： | 西南科技大学
四川东材科技集团股份有限公司 |
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| 基金项目： | 国家863计划项目(2003A333030) |
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| 摘 要： | 采用六甲基二硅氮烷改性纳米SiO2，并在聚对苯二甲酸乙二酯合成过程中加入改性纳米SiO2制备PET/SiO2纳米复合材料。采用红外光谱、热分析和扫描电镜表征了纳米SiO2粒子的改性效果，并就SiO2加入量对PET结晶行为、力学性能及电学性能的影响进行了研究。结果表明，纳米SiO2经六甲基二硅氮烷处理后，团聚减少，并且能较好地分散于PET中。当纳米SiO2含量为1 %时，结晶速度最快。当纳米SiO2含量为0.1 %时，PET的拉伸强度、弯曲强度和冲击强度分别提高了12.8 %、14 %和11.4 %；纳米SiO2含量在0.25 %~1 %时，随其含量的增加，PET的介电常数逐渐减小，体积电阻率逐渐增大。
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| 关 键 词： | 纳米SiO2 结晶行为 聚对苯二甲酸乙二醇酯 力学性能 电性能 |
| 收稿时间： | 2010-12-21 |
Effect of Nano-silica on Crystallization Behavior and Properties of PET |
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| KONG Zhiming,LUO Chunming,TANG Anbin.Effect of Nano-silica on Crystallization Behavior and Properties of PET[J].China Plastics,2011,25(4):42-45. |
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| Authors: | KONG Zhiming LUO Chunming TANG Anbin |
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| Affiliation: | KONG Zhiming1,LUO Chunming2,TANG Anbin1,2(1.School of Material Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China,2.National Insulation Material Engineering Research Center,Sichuan EM Technology Co,Ltd,Mianyang 621000,China) |
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| Abstract: | Nano-silica was modified with hexamethyl disilylamine,which was introduced in polyethylene terephthalate(PET) during its synthesis process.The effects of nano-silica on the crystallization behavior,mechanical and electrical properties of PET were studied using Fourier transform infrared spectrometer,thermogravimetry,and scanning electron microscope.It showed that the surface modification reduced the aggregation of nano-silica resulting in finer dispersion.When the content of nano-silica was 0.1 %,the tensil... |
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| Keywords: | nano-silica polyethylene terephthalate crystallization behavior mechanical property electrical property |
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