• 제목/요약/키워드: Thermally Stimulated Current(TSC)

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초고연신 고밀도 폴리에틸렌의 열자극전류 (Thermally Stimulated Current Measurement in Highly Elongated Polyethylene Film)

  • 박대희;김동욱;구자윤
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1990년도 하계학술대회 논문집
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    • pp.199-201
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    • 1990
  • The trap depth and its density of highly elongated polyethylene have been studied by thermally stimulated current measurements. Three discrete traps with depth of 0.13 0.3 and 0.5 eV have been evaiuated using the initial rise method in the temperature region 77 to 390 K ; these change slightly with the elongation ratio. A trap density of the order of $10^{13}-10^{14}/cm^3$ has been calculated from the area of TSC peaks.

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감마선에 조사된 중합체의 열자극 전류 (Thermally Stimulated Currents in Gamma Irradiated Polymer)

  • 추성실
    • Journal of Radiation Protection and Research
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    • 제7권1호
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    • pp.49-55
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    • 1982
  • 유기중합체의 열자극전류는 방사선량측정기로서 사용가능한 특성을 갖고있으며 중합체의 구성성분이 생체조직과 등가성분이므로 의학 및 생물학분야에서 효과적인 방사선 측정기구로 이용할 수 있었다. 포리에틸렌등 중합체에 방사선을 조사한후 $10{\sim}100V$의 전압과 실온에서 $100^{\circ}C$까지의 온도에 따라 열자극 전류를 측정하고 분석함으로서 물질의 에너지상수($0.8{\sim}1.0eV$)와 방사선피폭량(수Krands)에 따른 열자극전류($10^{-2}{\sim}10^{-4}{\mu}A$)의 상호관계를 계측할 수 있었다.

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진공증착법으로 제조한 PVDF 박막의 열자격전류에 관한 연구 (A Study on the Thermally Stimulated Current of PVDF Thin Film Prepared by Physical Vapor Deposition Method)

  • 이선우;박수홍;김형권;임응춘;김수정;육재호;이덕출
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1998년도 추계학술대회 논문집 학회본부 C
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    • pp.755-757
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    • 1998
  • The thermally stimulated current (TSC) of PVDF thin film prepared by physical vapor deposition method was investigated. PVDF shows three TSC peaks designated $P_1$, $P_2$ and $P_3$ in ascending order of temperature. The $P_1$ peak is associated with water in the PVDF specimen. $P_2$ and $P_3$ Peaks are specific peaks of $\alpha$ and $\beta$ type PVDF, respectively. The peak temperature was shifted to higher temperature, and peak intensity was decreased with increasing substrate temperature under thin film preparation.

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변성기의 몰딩 재료용 에폭시복합체의 열화 특성 (The Characteristics of Degradation in Epoxy Composites for Molding Materials of PT)

  • 박건호
    • 한국컴퓨터정보학회:학술대회논문집
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    • 한국컴퓨터정보학회 2011년도 제44차 하계학술발표논문집 19권2호
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    • pp.351-354
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    • 2011
  • The electrical degradation phenomena of epoxy composites to be used as a molding material for transformers were studied. The electrets were first manufactured by applying high voltages to five kinds of specimens given a mixing rate, and then TSC(Thermally Stimulated Current) values at the temperature range of $-160{\sim}200[^{\circ}C]$ were measured from a series of experiments. The behaviour of carrier and its origin in epoxy composites were examined, respectively. And various effects of electrical degradation on epoxy composites were also discussed in this study.

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호핑법에 의한 이온 공간전하 분극 열자극전류의 수치해석 (Numerical analysis of thermally stimulated current due to lonic space charge polarization by hopping method)

  • 김의균;국상훈
    • E2M - 전기 전자와 첨단 소재
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    • 제4권1호
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    • pp.53-64
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    • 1991
  • 절연체중에 있는 하전입자의 거동은 절연재료의 특성에 많은 영향을 준다. 본 연구에서는 호핑모델에 의한 수치해석법을 TSC특성과 쌍극자분극에 대한 TSC특성은 차이가 있었다. 실험과 대응시켜 가동이온에 관한 물성정수의 평가를 하였다. 호핑모델에 의해서 불포화 TSC와 I-V특성의 수치계산을 하였다.

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폴리에틸렌의 도전특성에 미치는 공중합의 영향 (Effects of copolymer on electrical conduction characters in polythylene)

  • 이규철;이종호;류근민
    • E2M - 전기 전자와 첨단 소재
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    • 제4권1호
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    • pp.12-18
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    • 1991
  • 각종 monomer를 공중합시킨 고분자 필름의 X선 유기 TSC(thermally-stimulated current)를 측정하고 polyethylene(PE)의 절연성능 개선의 관점에서 공중합 monomer의 영향에 대하여 검토하였다. PE의 X선 유기 TSC 피이크는 결정화도가 높을 수록 고온측으로 이동하였다. X선 유기 TSC에서 피이크는 공중합에 의하여 Br 및 F원자가 0.2~0.4eV의 전자 trap이 도입된 것으로 생각된다.

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열자격전류식을 이용한 이탈주파수인자 계산에 관한 연구 (A Study on the Calculation of Escape Frequency Factor using TSC Equation)

  • 김기준;김상진;전동근
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1995년도 추계학술대회 논문집
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    • pp.135-138
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    • 1995
  • This paper presents a method to calculate the escape frequency factor and its verification from TSC(Thermally Stimulated Current) equation and cures. To apply calculation method of ν using asymptotic estimation, it utilized two sets of TSC data with 1K interval. This method enables one to get the exact value of ν and activation energy at the same time by using computer programming. So, it regards their calculation method as a useful process to obtain the value of physical behavior.

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Hopping 모델에 의한 이온 공간전하분극 숙련재전류의 수치해석 (Numerical Analysis of Thermally stimulated current of Ionic Space charge Polarijation by Hopping Model)

  • 김의균;국상훈
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1990년도 추계학술대회 논문집
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    • pp.91-94
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    • 1990
  • The behavior of charged particle in dielectrics have a many effects on characteristics of the insulating materials. In this paper, numerical analysis method by hopping model was investigated application of TSC. As the results, there was a difference between characteristics of TSC by dipole polarization. Physical constant of movable ion corresponding to the experimental results was evaluated and also. Numerical calculations of unsaturated TSC and I-V characteristics were carried out by was of hopping model.

열화된 XLPE 케이블의 열지급전류 (Thermally Stimulated Currents in Aged XLPE Cable Insulation)

  • 김상준;이남우;정동원;고인석
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1991년도 하계학술대회 논문집
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    • pp.221-223
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    • 1991
  • In order to evaluate degradation of the aged power cables, thin slices(200m) cut from the aged cables were prepared for thermally stimulated current measurements. Throughout the temperature range, 140 to $280^{\circ}C$ the TSC is greater for the aged material, and sharp peak is observed at $158^{\circ}C$ and $210^{\circ}C$.

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Langmuir-Blodgett(LB) 박막의 열자격 전류 연구 (A study on the Thermally stimulated current(TSC) of the Langmuir-Blodgett(LB) films)

  • 이호식;이원재;김태완;강도열
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1997년도 춘계학술대회 논문집
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    • pp.273-276
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    • 1997
  • This paper describes the thermally stimulated current (TSC) measurements of arachidic acid and polyamic acid alkylamine salt(PAAS) LB film, which is a precursor of polyimide(PI). The measurements were performed from room temperature to about 25$0^{\circ}C$ and the temperature was increased at a rate of 0.02 K/s linearly. It shows that peaks of TSC are observed at about 8$0^{\circ}C$ in the arachidic acid and about 8$0^{\circ}C$, 16$0^{\circ}C$ in the PAAS LB films. Results of these measurements indicate that one peak at 8$0^{\circ}C$ is resulted from alkyl group; the other peak at 16$0^{\circ}C$ is due to alkyl and C-O group of PAAS. Additional large peak at about 16$0^{\circ}C$ is due to dipole moments in the PAAS films. The DSC of PAAS, arachidic acid and octadesylamine are measured. Thermal imidization was performed at 30$0^{\circ}C$ for 1 hour by our pre study.

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