• Title/Summary/Keyword: cross-linked density

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An Analysis of Insulating Reliability in Epoxy Composites for Molding Materials of PT

  • Yang, Jeong-Yun;Park, Geon-Ho
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2001.09a
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    • pp.43-46
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    • 2001
  • The DC dielectric breakdown of epoxy composites used for transformer was experimented and then its data were simulated by Weibull distribution equation in this study. The more hardener increased the stronger breakdown strength at low temperature because of cross-linked density by the virtue of ester radical, and the breakdown strength of specimens with filler was lower than it of non-filler specimens because it was believed that the adding filler formed interface, charges were accumulated in it, the molecular mobility was raised, the electric field was concentrated, electrons were accelerated and then electron avalanche was early accomplished. From the analysis of Wei bull distribution equation, it was confirmed that as the allowed breakdown probability was· given by 0.1[%], the value of 'applied field was needed to be under 17.20[kV/mm].

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A study on the recognition system design of one-time use of a standard plastic garbage bag at automaticat garbage facility (자동 쓰레기 집하 시설에 사용되는 1회사용 종량제 봉투 인식 장치 설계에 관한 연구)

  • Kim, Kea-Kook;Seo, Chang-Ok
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2012.01a
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    • pp.41-43
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    • 2012
  • Today many people are greatly interested in the environment. Especially increasing affluent of food causes a great amount of food waste. To handle this effectively, we now have a lot of problems of disposing garbage all over the world. In Korea, in order to reduce this garbage, we should use a standard plastic garbage bag in which we have to throw away our garbage. So it has an effect on significantly reducing the waste amount every year. Now, there are a lot of cases that residents again use a standard plastic garbage bag. The purpose of this study is to propose algorithm preventing the re-cycling of a standard plastic garbage bag.

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