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Title page for etd-0714104-130701


URN etd-0714104-130701 Statistics This thesis had been viewed 1697 times. Download 8 times.
Author Hung-Ling Chen
Author's Email Address No Public.
Department Materials Engineering
Year 2003 Semester 2
Degree Master Type of Document Master's Thesis
Language English Page Count 127
Title Effect of Plasma Treatment and dditives on PTC and NTC Behavior of High Density Polyethylene/Carbon black composites
Keyword
  • PTC
  • plasma
  • NTC
  • HDPE
  • carbon black
  • carbon black
  • HDPE
  • NTC
  • plasma
  • PTC
  • Abstract In this investigation, the effect of carbon black content, plasma treatment, 60Co γ-ray irradiate dose and additives on the positive temperature coefficient(PTC) behavior and negative temperature coefficient(NTC) behavior of high density polyethylene/carbon black(HDPE/CB) composites were studied. On the other hand, the surface morphology observations, the fracture surface morphology observations and the dynamic mechanical properties of HDPE/CB composite were also studied. It was found that the plasma pretreated was slightly decreased the NTC effect. On the other hand, adding dicumyl peroxide(DCP) and irradiation by 60Coγ-ray irradiation were good methods for increasing the PTC intensity. Used the dynamic mechanical analysis were processed the same result. In this investigation, the composites of PHDPE(40W.30min)/CB(40wt%)/DCP(2phr)/5M-rad possessed 7 order of PTC intensity. After 10 times thermal cycle measurement the reproducibility of PHDPE(40W.30min)/CB(40wt%)/
    DCP(2phr)/5M-rad was very good. PHDPE(40W.30min)/CB(40wt%)/
    DCP(2phr)/10M-rad possessed 8 order of PTC intensity. These two composites could be used PTC element under economical consideration.
    Advisor Committee
  • Chi-Yuan Huang - advisor
  • Files indicate in-campus access only
    Date of Defense 2004-06-23 Date of Submission 2004-07-14


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