碳氣凝膠對高分子預浸材積層板複合材料之機械性質影響

Mechanical effect of Carbon aerogel on Carbon fiber/epoxy Composite Laminates

周鈞淳(Chun-Chun Chou)

指導教授 ： 葉銘泉

國立清華大學/工學院/動力機械工程學系/碩士(2010年)

摘要

碳氣凝膠具有獨特的3D多孔奈米結構和高比表面積特性，對於增加高分子積層板複合材料機械和物理性質極具前景，本研究使用三種孔洞大小的碳氣凝膠，在製程上利用機械攪拌和超音波分散去製備高分子複合材料和積層板材料。本研究旨在探討添加不同比例的碳氣凝膠對於環氧樹脂基材和積層板複合材料的機械、物理性質影響，結果顯示環氧樹脂基材在拉伸性質和衝擊強度及積層板材料在導電性和熱傳導效率上皆隨著添加比例提高而上昇。整體機械性質以0.3wt%添加比例為最佳，其中以型號NO4碳氣凝膠的機械性質和物理性質最為優異。實驗最後利用SEM觀察碳氣凝膠/環氧樹脂複合材料和碳氣凝膠/環氧樹脂/碳纖維積層板之破壞面，討論材料的界面情形和破壞機制。

關鍵詞:碳氣凝膠、積層板複合材料、機械性質、物理性質。

關鍵字

碳氣凝膠 ； 積層板複合材料 ； 機械性質 ； 物理性質

並列摘要

Carbon aerogels have promising potential in increasing the mechanical and physical properties of carbon-fiber reinforced polymer(CFRP) laminates due to the possession of unique 3D porous structure at nanoscale and high specific surface. This study used three kinds of carbon aerogels which are different in pore size to fabricate carbon aerogel/epoxy composites and carbon aerogel/epoxy/carbon fiber laminates by using mechanical stirring and ultrasonication in process.
This study was aimed at investigating the mechanical and physical effects on epoxy matrix and epoxy/carbon fiber laminates by adding different propotions of carbon aerogels.The experimental results indicate that the tensile properties and impact strength of epoxy matrix are propotional to the adding propotions and also the electrical and thermal conductivities of the epoxy/carbon fiber laminates. The overall mechanical properties are the best when adding 0.3wt% carbon aerogels and NO4 is the most outstanding one in mechanical and physical properties among three types of carbon aerogels.
Morphologies of the fracture surfaces of carbon aerogel/epoxy composites and carbon aerogel/epoxy/carbon fiber laminates are observed by scanning electron microscope (SEM) to check and discuss its interface condition and fracture mechanism.

Keyword:Carbon aerogel; Composite laminates; Mechanical properties; Physical properties.

並列關鍵字

Carbon aerogel ； Composite laminates ； Mechanical properties ； Physical properties

參考文獻

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