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  5. 新型以熱塑性彈性體為基底根管充填材之研發
 
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新型以熱塑性彈性體為基底根管充填材之研發

Other Title
Preparation and Characterization of Novel Thermoplastic Polyolefin Elastomer Based Root Canal Filling Materials
Type
thesis
Date Issued
2006
Author(s)
林伶紅
Advisor
陳建中  
Subjects
系所名稱:口腔科學研究所
Description
條碼號:C0178432
Abstract
牙膠針作為熱垂直擠壓法之根管充填材料,會有冷卻後收縮、器械加熱溫度過高以及操作手續煩雜等等缺點。因此本研究擬將熱塑性彈性體高分子Engage當基材,以石墨纖維、氧化鋅當功能性填充劑,將這三種成分按照不同重量百分比,以塑譜儀混煉製備成各種高分子複合材樣品。樣品性質測試內容包括使用熱傳導係數分析儀、熱重分析儀、流變儀、熱機械分析儀等進行樣品的熱傳導係數、熱穩定性、融熔黏度及尺寸大小穩定性等相關物性分析。研究結果顯示對熱塑性彈性體複合材料而言,無機含量的多寡,有益於增加該複合材料的熱傳導特性;若固定Graphite時,當Engage減少氧化鋅增加時,熱傳導係數有升高的趨勢;在固定Engage成分前提下,隨著ZnO成分減少,Graphite比例增加,其熱傳導係數亦跟著升高。無機填充材的增加會顯著的影響複合材料的黏度。Engage含量相同時,低含量的ZnO及高含量graphite的複合材黏度會增加。當Engage與氧化鋅的含量比值越大時,流動性會趨近於Real Seal與純的Engage。相較於Real Seal與GP,無機填充劑含量較高的複合材料具較好的熱安定性,高達100oC以上。而無機填充劑含量較高的複合材亦具有較良好的尺寸大小穩定性。
URI
https://203.71.86.71/handle/123456789/12247
https://hdl.handle.net/11296/m8b9uw
File(s)
No Thumbnail Available
Name

C0178432.pdf

Size

6.47 MB

Format

Adobe PDF

Checksum

(MD5):a4a600c7f5f61facd260f95054b2dd9d

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