| 摘要: | 本論探討聚乳酸(PLA)和奈米鈦加工形成之奈米複合材料，物理性質、熱性質、電性質與機械性質。實驗用3-甲基丙烯酸基丙基三甲氧基矽烷（MPS）改質奈米鈦。混合聚乳酸(PLA)/奈米鈦（包括未改質和改質）奈米複合材料的製備與不同的重量百分比奈米鈦混合。
探討不同重量百分比聚乳酸(PLA)/奈米鈦的形態學( FT-IR、XRD、粒徑分析、SEM、XPS )，物理性質(密度，空孔率，接觸角)，機械性質(硬度，抗折試驗，抗張試驗，衝擊強度試驗，耐磨耗指數，DMA ) ，熱性質(TGA、MI、HDT、Vicat、DSC )，聚乳酸(PLA)性能和完善的差異程度。
實驗結果得知，經由FT-IR與XPS測試，發現聚乳酸(PLA)/奈米鈦奈米複合材料的改質後官能基，粒徑分析中奈米鈦（未改質和改質）都在奈米規範；在XRD測試中補強材的特性峰則會被PLA蓋過；在SEM具有的良好分散性能。
添加奈米鈦的物理性質的測試，有效提升；在機械性質測試結果，抗折、硬度、耐衝擊和耐磨耗，有效提升；抗張則是下降。在熱性質，耐熱性提高效果更加顯著；在電性質方面，隨著奈米鈦添加量的增加，電磁波吸收與遮蔽有效的提升。
This paper aime to discuss the Polylactic acid (PLA) and nano Titanium composites formed by the processing process, physical properties, mechanical and thermal properties of.The research used 3-methacryloxy-propyl-trimethoxysilane (MPS) to modify surface of nano titanium. Prepared by mixing Polylactic acid (PLA)/nano titanium (include non-modify and modify) nano composites with different content when mixing weight percent of nano titanium by mixing.
After forming the different levels of weight percent of the Polylactic acid (PLA)/nano titanium morphology (FT-IR, Particle, XRD, FE-SEM, XPS), physical properties (Density, Contact Angle , Void content), mechanical properties (Hardness, Flexural test, Tensile test, Impact strength, Wearing), thermal properties (TGA, MI, HDT, Vicat, DSC) for Polylactic acid (PLA) properties and improve the degree of difference.
Experimental results show, by FT-IR and XPS, the crystal structure of Polylactic acid (PLA)/nano titanium nano composites was determined; in particle size analysis show nano titanium (include non-modify and modify) are both in nano specification; at XRD test only see PLA peaks in PLA; XPS test can see nano composites contains nano titanium; Good dispersion can be seen in SEM.
Adding nano titanium powder does effectively enhance in the physical properties test; In the mechanical properties test results showed that and flexural, hardness and wearing index decreased are effectively enhance, and impact decreased,tensile decrease. In the thermal properties, heat resistance to enhance effect even more pronounced with the increase of nano titanium added, the electromagnetic wave absorption and shielding effectively improved. |
