本研究係針對聚對苯二甲酸丙二酯PTT,期望藉由奈米碳管優越的性質降低其表面電阻增加導電度,主要是利用奈米碳管做為導電材料加入高分子中,用來降低PTT的電阻和增加其抗靜電的能力,期望能夠達到electrostatic charge(ESC)criterion of thin film(1×108Ω-cm)的標準。 在本篇採用了熔融法來製備不同比例的PTT-奈米碳管複合材料,在研究中將分成添加未改質奈米碳管和改質奈米碳管兩個部分來探討。 改質碳管的部分由FTIR的結果可知碳管改質是成功的。我們在選定的溫度範圍190~210℃內,實驗中可發現碳管的加入使PTT結晶速率變快,並利用Avrami方程式來描述等溫結晶動力學。PTT富含相中的隨著增加奈米碳管增加抗張強度和拉伸也隨著增加,在形態學方面,利用電子顯微(SEM)來觀察複材的剖面形態及分散性,來了解其相容性,並利用皮膜鉛筆硬度計(Hardness pencil test)來檢測複材的機械性質及硬度。
In this study,we expect to reduce conductivity of PTT by adding carbon nanoubes MWNTs of excellent electrical properties.We mainly utilize the cabon nanotubes to reduce resistiviy and to increase antistatic abiliy of PTT to reach electrostatic charge (ESC) criterion of thin films (1×108Ω-cm). This study is to prepare PTT-carbon nanotubes composites with various ratios by melt-blending .The effect of unmodified MWNTs or modified MWNTs on PTT is also discussed. We conclude that MWNTs is modified by successfully from FTIR observations.The Avrami equation is applied to describe the kinetics of the crystallization in the temperature range of 190~210℃, In PTT-rich blend,tensile strength and elongation is increased by adding nanotubes.The morphology and dispersion of PTT-MWNTs nanocomposutes were observed by Scanning electron microscopy(SEM).The hardness is examined by Pencil test.