Enhanced mechanical and electrical insulating properties of (poly(para-phenylene terephthamide)) PPTA-based specialty paper with nanoscale PPTA fibers

Poly (para-phenylene terephthamide) PPTA-based specialty paper suffers from limited mechanical and electrical insulation properties due to weak interfacial interactions between chemically inert PPTA microfibers. Herein, in order to activate the fiber surface, PPTA nanofibers were prepared through DM...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2019-08, Vol.30 (15), p.14414-14423
Main Authors: Lu, Zhaoqing, Si, Lianmeng, Zhao, Yongsheng, Huang, Jizhen, Yao, Cheng, Jia, Fengfeng, Ma, Qin
Format: Article
Language:English
Subjects:
Cellulose
Characterization and Evaluation of Materials
Chemistry and Materials Science
Concrete construction
Concrete structures
Dielectric breakdown
Dielectric strength
Electrical insulation
Elongation
Fourier transforms
High temperature
Interfacial bonding
Materials Science
Mechanical properties
Microfibers
Modulus of elasticity
Nanofibers
Optical and Electronic Materials
Organic chemistry
Polyphenylene terephthalamide fibers
Reinforced concrete
Weibull distribution
Working conditions
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Summary:Poly (para-phenylene terephthamide) PPTA-based specialty paper suffers from limited mechanical and electrical insulation properties due to weak interfacial interactions between chemically inert PPTA microfibers. Herein, in order to activate the fiber surface, PPTA nanofibers were prepared through DMSO/KOH deprotonation process. Whereafter, a composite paper with reinforced concrete structure was constructed by combining PPTA microfibers and PPTA nanofibers through vacuum-assisted filtration process. The results show that the composite paper has a high mechanical strength of ~ 84.8 MPa, high Young’s modulus of ∼ 2.4 GPa, and elongation at break of ∼ 7%. Meanwhile, the Weibull distribution model predicts the dielectric breakdown strength of composite paper as high as 74.4 kV/mm. In addition, the composite paper also exhibited high-temperature resistance and UV resistance, indicating great advantages for operating under high temperature and electrical insulation conditions.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-019-01811-1