NDLI: Dielectric losses in the composite cellulose–mineral oil–water nanoparticles: theoretical assumptions

Content Provider	Springer Nature Link
Author	Żukowski, P. Kołtuwicz, T. N. Kierczyński, K. Rogalski, P. Subocz, J. Szrot, M. Gutten, M. Sebok, M. Korenciak, D.
Copyright Year	2016
Abstract	The paper presents an analysis of test results by Frequency Domain Spectroscopy (FDS) of the loss tangent (tgδ) in electrotechnical pressboard impregnated with insulating oil and containing nanoparticles of water depending on the frequency of alternating current, sample temperature and degree of moisture. We found tgδ reduction in areas of low and ultra-low frequency. It is associated with relaxation due to the hopping conductivity (tunnelling) of electrons between moisture nanoparticles occurring in the cellulose impregnated with insulating oil. In frequency areas close to the local minimum of tgδ and higher, relaxation does not depend on the moisture content and is associated with other polar molecules which are part of the cellulose. We developed a new method converting experimental frequency dependence of the loss angle tangent, measured by the FDS method to the reference temperature of 293 K (20 °C), using the exponential dependence of the relaxation time on the temperature, was developed. The activation energy of the relaxation time was determined based on the loss angle tangent of moist electrotechnical pressboard impregnated with insulating oil. It was found that the variation in moisture content in the composite cellulose–mineral oil–water nanoparticles do not cause changes in the activation energy of the relaxation time. The conversion of experimental frequency dependence of the loss angle tangent determined by the FDS method to the reference temperature of 293 K (20 °C) eliminates the temperature dependence in the areas of ultra-low and low frequencies occurring in the runs made directly on the basis of the measurement results. After calculating the frequency dependence of the loss angle tangent to the reference temperature, all that remains is its dependence on the moisture content.
Starting Page	1609
Ending Page	1616
Page Count	8
File Format	PDF
ISSN	09690239
Journal	Cellulose
Volume Number	23
Issue Number	3
e-ISSN	1572882X
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-04-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	FDS Electrotechnical pressboard Moisture content Loss angle tangent Relaxation time Activation energy Reference temperature Bioorganic Chemistry Physical Chemistry Organic Chemistry Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Polymers and Plastics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Dielectric losses in the composite cellulose–mineral oil–water nanoparticles: theoretical assumptions

Permittivity of a composite of cellulose, mineral oil, and water nanoparticles: theoretical assumptions

Permittivity of a composite of cellulose, mineral oil, and water nanoparticles: theoretical assumptions

Diagnostics of High Water Content Paper-Oil Transformer Insulation Based on the Temperature and Frequency Dependencies of the Loss Tangent

Formation of water nanodrops in cellulose impregnated with insulating oil

Precise Measurements of the Temperature-Frequency Dependence of the Conductivity of Cellulose—Insulating Oil—Water Nanoparticles Composite

Informing the improvement of forest products durability using small angle neutron scattering

Diagnostics on the Basis of the Frequency-Temperature Dependences of the Loss Angle Tangent of Heavily Moistured Oil-Impregnated Pressboard

Cellulose/silver nanoparticles composite microspheres: eco-friendly synthesis and catalytic application

Dielectric losses in the composite cellulose–mineral oil–water nanoparticles: theoretical assumptions

Similar Documents

Dielectric losses in the composite cellulose–mineral oil–water nanoparticles: theoretical assumptions

Permittivity of a composite of cellulose, mineral oil, and water nanoparticles: theoretical assumptions

Permittivity of a composite of cellulose, mineral oil, and water nanoparticles: theoretical assumptions

Diagnostics of High Water Content Paper-Oil Transformer Insulation Based on the Temperature and Frequency Dependencies of the Loss Tangent

Formation of water nanodrops in cellulose impregnated with insulating oil

Precise Measurements of the Temperature-Frequency Dependence of the Conductivity of Cellulose—Insulating Oil—Water Nanoparticles Composite

Informing the improvement of forest products durability using small angle neutron scattering

Diagnostics on the Basis of the Frequency-Temperature Dependences of the Loss Angle Tangent of Heavily Moistured Oil-Impregnated Pressboard

Cellulose/silver nanoparticles composite microspheres: eco-friendly synthesis and catalytic application

Dielectric losses in the composite cellulose–mineral oil–water nanoparticles: theoretical assumptions