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MCM-41 Surface Modification and Trap Characteristic of MCM-41/EP Composites |
Luo Pan1,2, Xu Man1, Wang Shaohui1, 3, Li Peng2, Zhang Yihan2, Xu Yang1, Xie Darong1 |
1. State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University Xi’an 710049 China; 2. State Grid Henan Economic Research Institute Zhengzhou 450052 China; 3. Northwest Electric Power Design Institute Co. Ltd China Power Engineering Consulting Group Xi’an 710045 China; |
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Abstract In this paper, the MCM-41 was surface modified by the silane coupling agent KH550 before the preparation of MCM-41/EP nano-composite. Moreover, the thermogravimetric analysis, Fourier transform infrared spectroscopy, small angle X-ray diffraction and N2 adsorption-desorption isotherms were used to characterize the surface structure of MCM-41 before and after surface modification. The in-situ polymerization was employed to prepare the MCM-41/EP Nano-composite with different percentages of MCM-41. Then, the glass transition temperature of MCM-41/EP composite was measured by using the dynamic mechanical analyzer. The results showed that the glass transition temperature of MCM-41/EP composite increased with the increase of MCM-41 percentage. Finally, the trap parameter of the composite was measured by the thermally stimulated depolarization current. It was shown that, with the increase of MCM-41, the trap depth became shallow, and the quantity of trapped charge decreased significantly.
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Received: 09 December 2016
Published: 24 May 2018
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