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首页> 外文期刊>Journal of Applied Polymer Science >Balance of mechanical and electrical performance in polyimide/nano titanium dioxide prepared by an in-sol method
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Balance of mechanical and electrical performance in polyimide/nano titanium dioxide prepared by an in-sol method

机译：通过溶胶法制备的聚酰亚胺/纳米二氧化钛中机电性能平衡

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Hybrid polyimide (PI)/titanium dioxide (TiO2) films were prepared by in situ polymerization and sol-gel and in-sol methods (where in-sol method indicates that in situ polymerization and the sol-gel method were used in the same samples). The mechanical and electrical properties were found to be sensitive to the processing methods and the dispersion of nano titanium dioxide (nano-TiO2) in the PI matrix. For the PI/TiO2 films prepared by the in situ polymerization method, their tensile strength increased with increasing TiO2-in situ ("TiO2-in situ" is "the TiO2 nano-particles prepared by in situ polymerization method") concentration. However, the optimal corona lifetime of the PI/TiO2 films was 15 min at 20 kHz and 2 kV because of poor dispersion. For the PI/TiO2 films prepared by the sol-gel method, the corona lifetime reached 113 min because of superior dispersion and a tensile strength of about 19.63 MPa. A balance of mechanical and electrical performances was achieved with the in-sol method. The corona-resistant life of the PI/TiO2 films was 43 min, which was about six times longer than that of the neat PI. Their tensile strength was 83.5 MPa; these films showed no decrease in this value compared with the pure PI films. (C) 2016 Wiley Periodicals, Inc.
机译：通过原位聚合和溶胶 - 凝胶和溶胶方法制备杂化聚酰亚胺（PI）/二氧化钛（TiO 2）膜（其中溶胶方法表明原位聚合和溶胶 - 凝胶法在相同的样品中使用）。发现机械和电气性能对PI基质中纳米二氧化钛（Nano-TiO2）的加工方法和分散来敏感。对于通过原位聚合方法制备的PI / TiO 2薄膜，它们的拉伸强度随着TiO 2 - 原位的增加而增加（“TiO 2-原位”是“通过原位聚合方法制备的TiO 2纳米颗粒”）浓度。然而，由于分散差，Pi / TiO 2薄膜的最佳电晕寿命为20kHz和2kV。对于通过溶胶 - 凝胶法制备的PI / TiO 2薄膜，由于优异的分散体和约19.63MPa的拉伸强度，电晕寿命达到113分钟。用溶胶法实现了机械和电气性能的平衡。 PI / TiO2薄膜的电晕寿命为43分钟，比整齐PI的含量长约六倍。它们的拉伸强度为83.5MPa;与纯PI薄膜相比，这些薄膜没有降低该值。 （c）2016 Wiley期刊，Inc。

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