eprintid: 20464
rev_number: 3
eprint_status: archive
userid: 1
dir: disk0/00/02/04/64
datestamp: 2026-01-29 06:29:24
lastmod: 2026-01-29 06:29:24
status_changed: 2026-01-29 06:29:24
type: article
metadata_visibility: show
creators_name: Chairul, Imran Sutan
creators_name: Abu Bakar, Norazhar
creators_name: Ab Ghani, Sharin
creators_name: Shahril Ahmad Khiar, Mohd
creators_name: Hidayah Rahim, Nor
creators_name: Nizam Md Arshad, Syahrun
title: Accelerated thermal aging of Kraft papers impregnated with dielectric liquids
ispublished: pub
note: Cited by: 0; All Open Access, Gold Open Access, Green Open Access
abstract: Accelerated thermal aging was conducted on Kraft papers impregnated with mineral insulating oil (MO) and palm insulating oil (PO), and the effect of aging time on the oils and Kraft papers was observed. Each sample consisted of insulating oil, dried Kraft paper, and weighed metal catalysts (copper, iron, zinc, and aluminum) in a bottle. Prior to aging, the bottles were left for 24 h at room temperature for impregnation to take place. The thermal aging experiments were carried out at 130 °C for 250, 500, and 750 h. The properties of the MO and PO (moisture content, acidity, and ultraviolet-visible absorption spectra) and the properties of the Kraft papers (tensile strength and colour) were determined. Results showed that the aged PO had higher moisture content compared with the aged MO. However, the Kraft papers impregnated with PO had better tensile strength after 750 h of aging, which may be attributed to the affinity of PO to moisture. This slows down the hydrolytic degradation mechanism. In terms of colour, the Kraft papers were darker than their original colour as the tensile strength decreased. To conclude, the Kraft paper impregnated with PO had higher tensile strength compared with those impregnated with MO. © 2023, Institute of Advanced Engineering and Science. All rights reserved.
date: 2023
publisher: Institute of Advanced Engineering and Science
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85175111300&doi=10.11591%2feei.v12i5.4336&partnerID=40&md5=1d2d970100cacc37665708ed46dc74e9
id_number: 10.11591/eei.v12i5.4336
full_text_status: none
publication: Bulletin of Electrical Engineering and Informatics
volume: 12
number: 5
pagerange: 2561 – 2568
refereed: TRUE
issn: 20893191
citation:   Chairul, Imran Sutan and Abu Bakar, Norazhar and Ab Ghani, Sharin and Shahril Ahmad Khiar, Mohd and Hidayah Rahim, Nor and Nizam Md Arshad, Syahrun  (2023) Accelerated thermal aging of Kraft papers impregnated with dielectric liquids.  Bulletin of Electrical Engineering and Informatics, 12 (5).  2561 – 2568.  ISSN 20893191