Influence of water absorption on charge formation in printed circuit board insulations

Tanaka, Hidesato; Ohki, Yoshimichi; Fukunaga, Kaori; Maéno, Takashi; Okamoto, Kenji

doi:10.1109/iseim.2005.193322

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Humidity and Inherent Moisture1

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2016

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“…An increase in humidity may lead to a larger charge density. 31,32,[59][60][61][62] This generally accepted conclusion is confirmed by Fig. 7.…”

Section: Humidity and Inherent Moisturesupporting

confidence: 69%

Research progress on space charge characteristics in polymeric insulation

Zhang¹,

Christen

Meng³

et al. 2016

J. Adv. Dielect.

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Due to their excellent electrical insulation properties and processability, polymer materials are used in many electrical products. It is widely believed that space charge plays an important role for the electric field distribution, conduction, ageing, and electric breakdown of polymeric insulation. This paper reviews measurements and characteristics of space charge behavior which mainly determined by the pulsed electro-acoustic (PEA) measurement technique. Particular interests are the effects of the applied voltage, the electrodes, temperature, humidity, microstructure, additives, and filler materials on accumulation, distribution, transport, and the decay of space charge in polymeric materials. This review paper is to provide an overview on various space charge effects under different conditions, and also to summarize the information for polymeric materials with suppressed space charge and improved electrical behavior.

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“…An increase in humidity may lead to a larger charge density. 31,32,[59][60][61][62] This generally accepted conclusion is confirmed by Fig. 7.…”

Section: Humidity and Inherent Moisturesupporting

confidence: 69%