| 摘要: | 本篇論文旨是以熔融混練法製備具高介電常數及高性能之聚丙烯/鈦酸鋇奈米複合材料，並測定其複合材料的機械性質、電性質、物理性質、熱性質以及動態與靜態力學性能。本次實驗以使用矽氧烷偶合劑接枝於BaTiO3的表面上進行改質，以及將聚丙烯(PP)樹酯添加不同含量的克數(每50克的PP所含該之成份克數)的BaTiO3和APTMS-m-BaTiO3製備成奈米複合材料。
探討在不同成份克數的BaTiO3和APTMS-m- BaTiO3對聚丙烯奈米複合材料的形態學(SEM、粒徑分析、ESCA、FT-IR、XRD、Raman) 、機械性質(硬度、耐磨耗指數、抗張測試、抗折測試以及耐衝擊測試)、電性質(介電常數) 、物理性質(密度)、熱性質(TGA、DSC、HDT、VST、CTE、MI)、及動態機械性質(DMA)之性能和影響上的差異程度。
由實驗結果可知，經由TGA、ESCA、XRD和FT-IR的測試可以證明和APTMS-m-BaTiO3是否接枝成功和覆蓋比率，並經由粒徑分析下，能確定保有補強材的尺寸是奈米等級。
在聚丙烯/奈米鈦酸鋇奈米複合材料添加BaTiO3和APTMS-m-BaTiO3的部分，結構與形態學在SEM形態圖，可以得知在添加BaTiO3與APTMS-m-BaTiO3有良好的分散性；物理性質的測試，密度上升是因無機物的添加；在機械性質測試結果，硬度呈提升趨勢，相對的磨耗指數為下降；抗折的測試中，添加BaTiO3或APTMS-m-BaTiO3，其強度與模數皆有下降趨勢。則在抗張測試中，添加BaTiO3或APTMS-m-BaTiO3，其強度與模數皆有上升的趨勢；在熱性質，耐熱性提高效果更加顯著，以及在DSC結果中，結晶度有提升；透過TMA得知奈米鈦酸鋇的添加對於PP的膨脹係數影響不大；在電性質方面，隨著BaTiO3和APTMS-m-BaTiO3的添加，介電常數有提升的效果。
This project object is to research the unsaturated high dielectric constant and high performance of the Preparation of Polypropylene/ Barium titanate nanocomposites and determine properties about Thermal, mechanical, electrical, physical, thermal and dynamic and static mechanical properties. In this study, using 3-Aminopropyltrimethoxysilane(APTMS) grafted nano barium titanate surface modification, then PP Add prepared BaTiO3 and APTMS-m-BaTiO3 Nanocomposites with a different number of grams of composition (per 50 grams of resin contained in the composition of the number of grams). Explore the different components of the number of grams of BaTiO3 and APTMS-m-BaTiO3 nanometer morphology of PP composites (SEM, Particle, FT-IR, XRD, Raman), thermal properties (TGA, HDT, VST, CTE), electrical properties (dielectric constant), mechanical properties(hardness, abrasion index, tensile strength, flexural strength and impact strength), physical properties(density) and the degree of difference between the dynamic and static mechanical properties (DMA、TMA) of the performance and impact.
The experimental results that, by TGA, FT-IR, XPS and XRD and testing can prove the success of siloxane coupling agent grafted via at particle size analysis, to retain the size of the reinforcing material in nano levels. PP / barium titanate adding BaTiO3 and APTMS-m-BaTiO3 part of the composite material, structure and morphology in SEM image that the addition of BaTiO3 and ATMPS-m-BaTiO3 have good dispersion；a test of physical properties, the increase in density is due to the addition of inorganic substances；in mechanical properties test results, the hardness is on the rise, and the relative wear index is on the decline. The bending test, adding BaTiO3 or ATMPS-m-BaTiO3, its strength is fell , but in the tensile test, adding BaTiO3 or APTMS-m-BaTiO3, its strength rises；in thermal properties, the effect of improving heat resistance is more remarkable, and in the DSC results, the crystallinity is improved; according to TMA, the addition of nano-barium titanate has little effect on the expansion coefficient of PP in terms of electrical properties performance, with BaTiO3 and ATMPS-m-BaTiO3 add permittivity have to enhance the effect. |
