Enhancing Insulating Performances of Presspaper by Introduction of Nanofibrillated Cellulose

Jianwen Huang, Yuanxiang Zhou, Longyu Dong, Zhongliu Zhou and Xiangjun Zeng
Additional contact information
Jianwen Huang: Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
Yuanxiang Zhou: Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
Longyu Dong: Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
Zhongliu Zhou: Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
Xiangjun Zeng: Research Department of High Voltage Technology, Electric Power Research Institute of China Southern Power Grid, Guangzhou 510633, China

Energies, 2017, vol. 10, issue 5, 1-13

Abstract: This study explores the possibility of enhancing both mechanical and breakdown properties of insulating presspaper by the introduction of an organic nano additive. Four different concentrations of nanofibrillated cellulose (NFC) were taken into account: 0.5 wt %, 2.5 wt %, 5 wt %, and 10 wt %. Presspaper containing no NFC was also prepared as a reference. Obtained samples were characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Mechanical properties and breakdown behaviors were measured. Results show that the addition of 10 wt % NFC to softwood fibers can achieve the best performance. Tensile strength of reference presspaper is 109 MPa, whereas that of presspaper modified by 10 wt % NFC is 136 MPa, resulting in a 25% increase. The improved tensile strength can be attributed to the increased density and inter fiber bond strength. More importantly, presspaper reinforced by 10 wt % NFC can also achieve enhanced AC and DC breakdown strengths, which are 19% and 21% higher than those of the reference presspaper. It is concluded that NFC is likely to be a promising nano additive for cellulose insulation.

Keywords: insulating presspaper; nanofibrillated cellulose; tensile strength; breakdown behavior (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/10/5/681/pdf (application/pdf)
https://www.mdpi.com/1996-1073/10/5/681/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:10:y:2017:i:5:p:681-:d:98495

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().