Improvement of heat resistance of silica-agglomerate electret using electrostatic spraying

The silica-agglomerate electret could be obtained after spraying negatively charged solution of colloidal silica on a fluororesin film using an electrostatic spraying technique. The surface electric potential was measured after spraying to investigate which method was suitable for preparing the elec...

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Autores principales:	Chenye WU, Kensuke KAGEYAMA, Tatenobu SAKAI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2015
Materias:	electret silica agglomerates electrostatic spraying fluorine resin heat resistance Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/5d09e88258a5485cbe24455e29fc3050
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spelling	oai:doaj.org-article:5d09e88258a5485cbe24455e29fc30502021-11-26T06:25:43ZImprovement of heat resistance of silica-agglomerate electret using electrostatic spraying2187-974510.1299/mej.15-00064https://doaj.org/article/5d09e88258a5485cbe24455e29fc30502015-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/2/3/2_15-00064/_pdf/-char/enhttps://doaj.org/toc/2187-9745The silica-agglomerate electret could be obtained after spraying negatively charged solution of colloidal silica on a fluororesin film using an electrostatic spraying technique. The surface electric potential was measured after spraying to investigate which method was suitable for preparing the electret. As a result, the method in which a spray gun was installed to a conventional corona-charging setup delivered the electret with the amplitude of the electric surface potential over 0.8 kV. The silica agglomerates using an electrostatic spraying technique (ES electret) showed larger diameter D and lower point density N than those using conventional technique (corona-charging after spraying, CC electret). Furthermore, the prepared electrets were heated to examine the improvement of the heat resistivity by the electrostatic spraying. Then, the obtained silica-agglomerate electret showed better heat resistivity than the conventional silica-agglomerate electret. Then, the charge retention at 250°C R250 of ES electrets prepared in this study was higher than 57 % when the electrets suffered high temperature from 200 to 250 °C for 12.5 min at the heating test. Consequently, it can be concluded that the electrostatic spraying was excellent technique to obtain the silica-agglomerates electret with high heat resistance.Chenye WUKensuke KAGEYAMATatenobu SAKAIThe Japan Society of Mechanical Engineersarticleelectretsilica agglomerateselectrostatic sprayingfluorine resinheat resistanceMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 2, Iss 3, Pp 15-00064-15-00064 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	electret silica agglomerates electrostatic spraying fluorine resin heat resistance Mechanical engineering and machinery TJ1-1570
spellingShingle	electret silica agglomerates electrostatic spraying fluorine resin heat resistance Mechanical engineering and machinery TJ1-1570 Chenye WU Kensuke KAGEYAMA Tatenobu SAKAI Improvement of heat resistance of silica-agglomerate electret using electrostatic spraying
description	The silica-agglomerate electret could be obtained after spraying negatively charged solution of colloidal silica on a fluororesin film using an electrostatic spraying technique. The surface electric potential was measured after spraying to investigate which method was suitable for preparing the electret. As a result, the method in which a spray gun was installed to a conventional corona-charging setup delivered the electret with the amplitude of the electric surface potential over 0.8 kV. The silica agglomerates using an electrostatic spraying technique (ES electret) showed larger diameter D and lower point density N than those using conventional technique (corona-charging after spraying, CC electret). Furthermore, the prepared electrets were heated to examine the improvement of the heat resistivity by the electrostatic spraying. Then, the obtained silica-agglomerate electret showed better heat resistivity than the conventional silica-agglomerate electret. Then, the charge retention at 250°C R250 of ES electrets prepared in this study was higher than 57 % when the electrets suffered high temperature from 200 to 250 °C for 12.5 min at the heating test. Consequently, it can be concluded that the electrostatic spraying was excellent technique to obtain the silica-agglomerates electret with high heat resistance.
format	article
author	Chenye WU Kensuke KAGEYAMA Tatenobu SAKAI
author_facet	Chenye WU Kensuke KAGEYAMA Tatenobu SAKAI
author_sort	Chenye WU
title	Improvement of heat resistance of silica-agglomerate electret using electrostatic spraying
title_short	Improvement of heat resistance of silica-agglomerate electret using electrostatic spraying
title_full	Improvement of heat resistance of silica-agglomerate electret using electrostatic spraying
title_fullStr	Improvement of heat resistance of silica-agglomerate electret using electrostatic spraying
title_full_unstemmed	Improvement of heat resistance of silica-agglomerate electret using electrostatic spraying
title_sort	improvement of heat resistance of silica-agglomerate electret using electrostatic spraying
publisher	The Japan Society of Mechanical Engineers
publishDate	2015
url	https://doaj.org/article/5d09e88258a5485cbe24455e29fc3050
work_keys_str_mv	AT chenyewu improvementofheatresistanceofsilicaagglomerateelectretusingelectrostaticspraying AT kensukekageyama improvementofheatresistanceofsilicaagglomerateelectretusingelectrostaticspraying AT tatenobusakai improvementofheatresistanceofsilicaagglomerateelectretusingelectrostaticspraying
_version_	1718409778162565120

Improvement of heat resistance of silica-agglomerate electret using electrostatic spraying

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