臺灣博碩士論文加值系統

在溫阻曲線分析方面，以往研究熱敏電阻所用的靜態量測方法僅對初電阻值、斷電阻值、跳電溫度評估，尚未有動態的探討。本文以實際測試及理論分析的方式來探討熱敏電阻的溫阻特性及承載電流性能，特別是針對斷電瞬間電流與壓降的平衡狀態。
實驗測試以電源供應器為輸入功率的控制器，以額定電流8A的熱敏電阻來進行測試。溫阻量測中發現承載電流呈現出指數形式上揚，尤其是進入結晶發生變化區域，電流並沒有非常明顯隨電壓上升而下降。當加熱功率達到結晶崩解時，此時聚乙烯進入黏性流，切變模數有發生下降的變化，當加熱到完全熔融時，電流遞降速率呈現平緩的趨勢，壓降不再有變化。
熱處理方面，傳統的冷熱循環幾乎已經有完整的探討，但以往在良率損失大多是斷電阻不足所造成，計算各階段阻值彈跳規格往往是靠經驗方式估算，不同的製程會有不同彈跳率，故此動態溫阻量測採取的方法可同步計算出消散功率，可用來比較是否和以往所用靜態方法所做之實驗有否差異。

Regarding the analysis of RT curves, in the past by using static measurement to study thermistor was aimed at the evaluation of initial resistance, stand off resistance, and the trip temperature, and few research is focused on dynamic investigation. Experimental tests and theoretical analysis were conducted to investigate the characteristics of RT curves and the performance of hold current in this research, especially for the equilibrium status of current and voltage at the instant of tripping.
Power supply was used as the input power controller and the rated current of thermistor was specified of 8 Ampere in the experiments. Experimental results indicated that the hold current was raised in proportion to exponential increment, especially entering into crystallization change regime, and the reduction of current did not be in compliance with voltage increasing. When input power closed to the melting point of crystallization, polyethylene changed into viscous flow, and shear stress modulus drop down rapidly. When the thermistor was heated to the melting point, the reduction of current shows a decreasing trend, and the voltage drop became constant without variation.
In heat treatment, traditional thermal cycling has already had complete investigation, but many of yield lost may be caused by low stand off resistance. Calculating the specification of resistance jump for each process is usually based on personal experienced estimation. Different jump ratio will be obtained by different process, thereby dynamic measurement of RT curves can evaluate power dissipation that will be available for making comparison with static measurement of RT curves whether to exist any differences.

目錄
中文摘要____________________________I
英文摘要____________________________II
目錄________________________________III
圖表目錄____________________________V
符號說明____________________________VII
第一章 緒論
1-1 研究動機________________________1
1-2 研究背景________________________6
1-3 研究目的_________________________10
第二章 文獻回顧與基本理論
2-1 文獻回顧_________________________15
2-2 材料性質_________________________16
2-3 各種效應_________________________23
第三章 製程與測試
3-1 基本製程_________________________29
3-2 靜態溫阻_________________________30
3-2 動態溫阻_________________________32
第四章 熱處理與數值模擬
4-1 特殊熱處理_______________________39
4-2 力學模式_________________________41
4-3 模式相似性_______________________46
4-4 數值模擬_________________________49
第五章 結果與討論
5-1 結果與討論_______________________52
第六章 結論
6-1 結論_____________________________53
6-2 未來改進方向_____________________53
參考文獻____________________________55
附錄一______________________________57
附錄二______________________________58
附錄三______________________________58
附錄四______________________________59
附錄五______________________________59

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