DOI QR코드

DOI QR Code

열경화성 분석을 위한 가속열화 된 Chlorosulfonated Polyethylene의 경년특성 연구

Study of Thermal Ageing Behavior of the Accelerated Thermally Aged Chlorosulfonated Polyethylene for Thermosetting Analysis

  • 투고 : 2017.02.08
  • 심사 : 2017.04.19
  • 발행 : 2017.05.01

초록

The accelerated thermal ageing of CSPE (chlorosulfonated polyethylene) was carried out for 16.82, 50.45, and 84.09 days at $110^{\circ}C$, equivalent to 20, 60, and 100 years of ageing at $50^{\circ}C$ in nuclear power plants, respectively. As the accelerated thermally aged years increase, the insulation resistance and resistivity of the CSPE decrease, and the capacitance, relative permittivity and dissipation factor of those increase at the measured frequency, respectively. As the accelerated thermally aged years and the measured frequency increase, the phase degree of response voltage vs excitation voltage of the CSPE increase but the phase degree of response current vs excitation voltage decrease, respectively. As the accelerated thermally aged years increase, the apparent density, glass transition temperature and the melting temperature of the CSPE increase but the percent elongation and % crystallinity decrease, respectively. The differential temperatures of those are $0.013-0.037^{\circ}C$ and, $0.034-0.061^{\circ}C$ after the AC and DC voltages are applied to CSPE-0y and CSPE-20y, respectively; the differential temperatures of those are $0.011-0.038^{\circ}C$ and $0.002-0.028^{\circ}C$ after the AC and DC voltages are applied to CSPE-60y and CSPE-100y, respectively. The variations in temperature for the AC voltage are higher than those for the DC voltage when an AC voltage is applied to CSPE. It is found that the dielectric loss owing to the dissipation factor($tan{\delta}$) is related to the electric dipole conduction current. It is ascertained that the ionic (electron or hole) leakage current is increased by the partial separation of the branch chain of CSPE polymer as a result of thermal stress due to accelerated thermal ageing.

키워드

참고문헌

  1. G. Janowska, A. Kucharska, W.M. Rzymski and A. Kasiczak, "DSC study of Chlorosulphonated Polyethylene", J Therm Anal Calorim, Vol. 102, pp. 1019-1024, 2010. https://doi.org/10.1007/s10973-009-0622-2
  2. Korea Advanced Institute of Science and Technology, Department of Nuclear and Quantum Engineering, "Accident of Fukushima NPPs in Japan: Outcomes and impact, and lessons learned", (Interim Report), 2011.
  3. V. Tanrattanakul and A. Petchkaew, "Mechanical Properties and Blend Compatibility of Natural Rubber- Chlorosulfonated Polyethylene Blends," Journal of Applied Polymer Science, Vol. 99, pp. 127-140, 2006. https://doi.org/10.1002/app.22500
  4. Huan L. Lee " The Handbook of Dielectric Analysis and Cure Monitoring", pp. 13-16, Lambient Technologies L.L.C., 2014.
  5. http://www.lambient.com. "AN11-LT-451 and LCR Meter Comparison and LT-4203 Parallel Plate Test Fixture", Version 1.0, Lambient Technologies L.L.C., 2014.
  6. Jong-IL Kim, Myeung-Ye Lee "High Voltage Electric Discharge Olasma & Application", 1st Edition, pp. 251-276. KyoBobook. 2012.
  7. Huan L. Lee " The Handbook of Dielectric Analysis and Cure Monitoring", pp. 31-32, Lambient Technologies L.L.C., 2014.
  8. A. ROYCHOUDHURY and P. P. DE " Studies on Chemical Interactions Between Chlorosulphonated Polyethylene and Carboxylated Nitrile Rubber", Journal of Applied Polymer Science, Vol. 63, pp. 1761-1768, 1997. https://doi.org/10.1002/(SICI)1097-4628(19970328)63:13<1761::AID-APP8>3.0.CO;2-E
  9. http://kor.mt.com/kr/ko/home/products/Laboratory_ Analytics_Browse/TA_Family_Browse.html
  10. William D. Callister, JR. "Materials Science and Engineering - An Introduction", Fifth Edition, pp. 473-519. John Wiley & Sons, Inc.. 2000.
  11. http://www.heonjin.com," $TXA^{TM}$ Texture Analyzer"
  12. http://www.aslltd.c.uk "CTH7000, hand-hand thermometer, WIKA, UK