Specific Heat and Thermal Conductivity Measurement of XLPE Insulator and Semiconducting Materials

XLPE 절연층과 반도전층 재료의 비열 및 열전도 측정

  • 이경용 (원광대 전기전자 및 정보공학부) ;
  • 양종석 (원광대 전기전자 및 정보공학부) ;
  • 최용성 (원광대 전기전자 및 정보공학부) ;
  • 박대희 (원광대 전기전자 및 정보공학부)
  • Published : 2006.01.01

Abstract

To improve mean-life and reliability of power cable, we have investigated specific heat (Cp) and thermal conductivity of XLPE insulator and semiconducting materials in 154(kV) underground power transmission cable. Specimens were respectively made of sheet form with EVA, EEA and EBA added $30[wt\%],$ carbon black, and the other was made of sheet form by cutting XLPE insulator in 154(kV) power cable. Specific heat (Cp) and thermal conductivity were measured by DSC (Differential Scanning Calorimetry) and Nano Flash Diffusivity. Specific-heat measurement temperature ranges of XLPE insulator were from $20[^{\circ}C]\;to\;90[^{\circ}C],$ and the heating rate was $1[^{\circ}C/mon].$ And the measurement temperatures of thermal conductivity were $25[^{\circ}C],\;55[^{\circ}C]\;and\;90[^{\circ}C].$ In case of semiconducting materials, the measurement temperature ranges of specific heat were from $20[^{\circ}C]\;to\;60[^{\circ}C],$ and the heating rate was $1[^{\circ}C/mon].$ And the measurement temperatures of thermal conductivity were $25[^{\circ}C],\;55[^{\circ}C].$ In addition we measured matrix of semiconducting materials to show formation and growth of carbon black in base resins through the SEM. From these experimental results, both specific heat and thermal conductivity were increased by heating rate because volume of materials was expanded according to rise in temperature.

Keywords

References

  1. 한재흥, 김상준, 권오형, 강희태, 서광석, '반도전층내 불순물이 전력케이블의 신뢰도에 미치는 영향,' 전기학회논문지, Vol.46, No.1, pp. 19-27, 1997
  2. 한재흥, 송일근, 임장섭, 이동영, '전력케이블용 반도전 재료의 설계기술', 전기전자재료학회 논문지, Vol 13, No. 2, pp. 12-17, 2000. 2
  3. 김성철 외, '고분자공학I', 회중당, 1994, Chapter 1-14
  4. 박정호, 윤영섭, 이상렬, 이승기, 이준신, '전자재료 물성및 소자', 2002, Chapter 1, 2
  5. 이경용, 양종석, 최용성, 박대희, '반도전재료의 불순물 측정 및 물성에 관한 연구', 전기학회논문지, Vol. 53C, No. 9, pp. 455-458, 2004
  6. Technical Report S-39, 'Conductive Carbon Black in Pla sties', Cabot Corporation
  7. 전용구, 김재경, 함덕순, 김진석, 'EVA의 Vinyl Acetate 함량변화에 따른 열적-기계적 성질 연구', Polymer (korea), Vol.15, No.4, pp.402-410, 1991