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Start Over Topic ta401-492 Publisher wiley
3 results

1. A review on the research progress and future development of nano‐modified cellulose insulation paper

Author

Chao Tang, Rui Chen, Jinzhu Zhang, Xiao Peng, Binghao Chen, and Liusheng Zhang

Subjects
ageing, composite materials, dielectric materials, electric strength, nanoparticles, paper, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Abstract Focussing on the insulating material of power transformer—cellulose insulation paper, this paper first introduces the basic characteristics and engineering application background of insulation paper. Then, the research progress of improving the mechanical properties, thermal stability and electrical properties of insulation paper by nano modification in recent years is compared, and the promotion mechanism is analysed. In addition, in practical engineering application, the oil–paper composite insulation system composed of insulation paper and insulating oil is used for the internal insulation of oil immersed transformer. Therefore, the influence of modified insulation paper on the performance of oil–paper composite insulation system is analysed. Finally, the newly reported new insulation paper is introduced, and the future development trend of modification of traditional insulation paper is analysed.

Published
2022
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2. Electrical and thermal properties of insulating oil-based nanofluids: a comprehensive overview

Author

Zhengyong Huang, Jian Li, Wei Yao, Feipeng Wang, Fu Wan, Yaxiong Tan, and Muhammad Ali Mehmood

Subjects
transformer oil, insulating oils, nanofluidics, electric breakdown, nanoparticles, vegetable oils, suspensions, ageing, thermal conductivity, paper, electrical properties, thermal properties, nanoscale particles, electrical insulation, heat dissipation, nanomodified insulating oils, vegetable insulating oils, thermal aging performance, oil–paper interaction, insulating oil-based nanofluids, mineral insulating oils, stable suspensions, homogeneous suspensions, dielectric spectroscopy, breakdown characteristics, power transformers, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Nanofluids, formed by adding nanoscale particles to insulating oil, are stable and homogeneous suspensions that present advanced performance of electrical insulation and heat dissipation. This study shows a comprehensive literature review based on the related results of nano-modified insulating oils (both mineral and vegetable insulating oils) to analyse the preparation methods, stability, dielectric spectroscopy, thermal conductivity, breakdown characteristics under AC and DC voltage, the thermal aging performance of nanofluids and oil–paper interaction. Then theoretical models have been introduced to explain the electrical mechanism of nanofluids. In addition, future research is proposed for nanofluids which would be low cost, highly stable and practically applicable to the power transformers.

Published
2019
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3. New alternatives to single‐use plastics: Starch and chitosan‐ graft ‐polydimethylsiloxane‐coated paper for water‐ and oil‐resistant applications

Author

Aditya Nair, Ajmir Khan, Dhwani Kansal, and Muhammad Rabnawaz

Subjects
Coated paper, Microplastics, Water resistant, microplastics, Single use, Materials science, oil‐resistant, Polydimethylsiloxane, latex, Starch, paper, PFAS remediation, Chitosan, chemistry.chemical_compound, chemistry, Chemical engineering, TA401-492, plastics, Materials of engineering and construction. Mechanics of materials
Abstract

An increase in the environmental and health concerns over fluorochemical‐based, wax‐based, and extrusion‐based paper coatings has led to a growing interest in bio‐based, biodegradable, and repulpable alternatives to obtain water‐ and oil‐repellent coatings. Reported herein is a fluorine‐free, plastic‐free, and cost‐effective water and grease resistant paper coating approach that utilizes blends of corn‐starch (S) and a novel chitosan‐graft‐polydimethylsiloxane (CP) copolymer. The hydrophobic and oleophobic performance of the S/CP‐coated paper was evaluated by varying the ratio of S and CP in the overall blend. The S/CP‐coated papers were observed to have low cobb60 values (water absorptivity) of 13 ± 0.9 g m−2 and an excellent kit rating (oil resistance) of 12/12. The S/CP‐coated paper substrate surface profile was analyzed via scanning electron microscopy (SEM). The repulpability of the coated paper is also demonstrated by washing the coating materials from the paper and recovering the pulp.

Published
2021