PA 6/ 碳纖維與PA 6/ 氧化鐵複合材料之合成與功能性質研究

A Study on the Synthesis and Functional Properties of PA 6/ Carbon Fiber and PA 6/ Fe2O3 Composites

杜佳儒(Chia-Ju Tu)

指導教授 ： 鄧道興

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2010年)

摘要

本研究第一部分探討PA 6(Polyamide 6, Nylon 6)在原位聚合方法(In situ polymerization)中加入平均長度0.03 mm之碳纖維(Carbon Fiber, CF) 以製備出具電磁波屏蔽效益之PA 6/ CF複合材料。利用己內醯胺(ε-Caprolactam, CPL)合成PA 6之過程中，將1、2、3、4、5 wt%不同含量之碳纖維(CF)加入與CPL混和均勻，再經純化、真空乾燥處理後製成各種不同添加比例之PA 6/ CF複合材料。第二部份則在基材中添加金屬氧化鐵粉體，以相同製程製備PA 6/ Fe2O3複合材料，最後探討碳纖維與氧化鐵粉體對複合材料之電磁波屏蔽效應、熱性質、機械性質影響。
藉由FTIR對複合材料做表面特徵官能基分析，發現添加碳纖維(CF)與金屬氧化鐵並未出現新的官能基特性峰或是造成偏移現象，代表本研究屬於物理混掺；且進一步利用動態顯微鏡來觀測碳纖維在複合材料中之分散狀況。在電氣性質分析方面，透過表面電阻測試儀與向量網路分析儀探討其抗靜電功效與電磁波屏蔽效應，發現隨碳纖維與金屬氧化鐵添加量增加，其電氣性質均有提升之趨勢。而熱性質方面，則透過TGA探討其熱裂解溫度及殘餘量間之關係，以了解其加工性質；並由DSC測試，以探討其玻璃轉移溫度(Tg)及熔點(Tm)之變化。並且對PA 6/ CF與PA 6/ Fe2O3複合材料做機械性質結果分析，隨碳纖維與氧化鐵添加量增加，使複合材料由硬而韌之特性轉為硬而強；而PA 6/ CF複合材料之耐磨性也隨之增加。最後利用迅速導熱係數測定儀及熱電偶式溫差測試系統以測試其導熱性質，隨碳纖維添加量增加，其散熱之功能性質有提升之趨勢。

關鍵字

PA 6 ； 原位聚合法 ； 碳纖維 ； 氧化鐵 ； 電磁波屏蔽效應 ； TGA ； DSC

並列摘要

In this study, the Carbon Fiber (CF) were added during the process of PA 6 (Polyamide 6, Nylon 6) in situ polymerization to fabricate composites with Electromagnetic shielding effectiveness (SE). It was in the course of synthesizing ε-caprolactam (CPL) to form PA 6, the various amounts in between one to five wt% of Carbon Fiber (CF) were added. Such PA 6/ CF composites were fabricated by the purification and vacuum drying procedure. At the second part its PA 6/ Fe2O3 composites were obtained by the same process as to fabricate PA 6/ CF composites. The effects on electromagnetic shielding, thermal and mechanical properties were also investigated. The data of FTIR analysis showed neither new group was made nor phenomenon of displacement was happened. Also, the dispersion of carbon fiber was investigated by portable color video microscope. As to obtain the electrical properties of composites, the antistatic, electromagnetic shielding effectiveness of composites were examined by resistivity meter and vector network analyzer respectively. The experiment results showed that the electrical properties improved with the increasing quantity of carbon fiber and ferrite powders. The thermal properties of composites, the decomposition temperature of composites and its relationship to the weight loss were examined by TGA. In addition, the variation in glass transition temperature (Tg) and melting temperature (Tm) were analyzed with DSC. Furthermore, the mechanical properties of PA 6/ CF and PA 6/ Fe2O3 composites were studied. From the experimental results, it showed that the hard and though characteristics of such composites were turned into hard and strong while increasing the quantity of carbon fiber and Fe2O3, also the wear resistance of PA 6/ CF composites was increased. Finally, the cooling properties were analyzed by quick thermal conductivity meter and thermocouple temperature testing system. It was observed that the coolness effect increased with increasing the quantity of carbon fiber.

並列關鍵字

PA 6 ； In situ polymerization ； Carbon Fiber ； Ferrimagnetism Power ； Electromagnetic Shielding Effectiveness (EMSE) ； TGA ； DSC

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