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Energies 2017, 10(3), 397; doi:10.3390/en10030397

Thermal Stability of Modified Insulation Paper Cellulose Based on Molecular Dynamics Simulation

1
College of Engineering and Technology, Southwest University, Chongqing 400715, China
2
State Grid Chongqing Electric Power Co. Chongqing Electric Power Research Institute, Chongqing 401123, China
3
Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
*
Author to whom correspondence should be addressed.
Academic Editor: Issouf Fofana
Received: 26 January 2017 / Revised: 1 March 2017 / Accepted: 17 March 2017 / Published: 20 March 2017
View Full-Text   |   Download PDF [3100 KB, uploaded 21 March 2017]   |  

Abstract

In this paper, polysiloxane is used to modify insulation paper cellulose, and molecular dynamics methods are used to evaluate the glass transition temperature and mechanical properties of the paper before and after the modification. Analysis of the static mechanical performance of the model shows that, with increasing temperature, the elastic modulus of both the modified and unmodified cellulose models decreases gradually. However, the elastic modulus of the modified model is greater than that of the unmodified model. Using the specific volume method and calculation of the mean square displacement of the models, the glass transition temperature of the modified cellulose model is found to be 48 K higher than that of the unmodified model. Finally, the changes in the mechanical properties and glass transition temperature of the model are analyzed by energy and free volume theory. The glass transition temperatures of the unmodified and modified cellulose models are approximately 400 K and 450 K, respectively. These results are consistent with the conclusions obtained from the specific volume method and the calculation of the mean square displacement. It can be concluded that the modification of insulation paper cellulose with polysiloxane will effectively improve its thermal stability. View Full-Text
Keywords: insulation paper; polysiloxane; glass transition temperature; mean square displacement; molecular simulation insulation paper; polysiloxane; glass transition temperature; mean square displacement; molecular simulation
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Tang, C.; Zhang, S.; Wang, Q.; Wang, X.; Hao, J. Thermal Stability of Modified Insulation Paper Cellulose Based on Molecular Dynamics Simulation. Energies 2017, 10, 397.

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