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研究生:葉世豪
研究生(外文):Shyh-Haur Yeh
論文名稱:聚碳酸酯(PC)經輻射後之硬度與穿透率之研究
論文名稱(外文):Evolution of Hardness and Transmittance in Irradiated Polycarbonate (PC)
指導教授:李三保李三保引用關係
指導教授(外文):Sanboh Lee
學位類別:碩士
校院名稱:國立清華大學
系所名稱:材料科學工程學系
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:英文
論文頁數:77
中文關鍵詞:color centergamma-raytransmittance
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The optical property of PC is measured by spectrophotometer. It is found that different dosages and annealing temperatures have different transmittances. As annealing time increases, the transmittance recovers gradually and reaches steady state. The process follows a second-order kinetic process and the activation energies are obtained.
T he variation of hardness was measured. The hardness increased when aging temperature and annealing time increase. The hardness of irradiated PC is analyzed according to a first-order kinetic process at the elevated temperature and the activation energies are obtained.
On the other hand, we use DSC and FTIR to study the glass transition temperature (Tg) and the chemical structure, respectively. The band of 3100-3500 cm-1 and the peaks of 3620, 2334cm-1 have lower intensity for high dose than for small dose.

Acknowledgment I
Abstract II
Contents III
Introduction 1
Experimental 7
Results and Discussion 10
Conclusions 19
References 20
List of Tables 25
Figure Captions 34

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