Research on the fiber hybrid / alumina reinforced polylactic acid composites by melt compounding

• Main Authors: Chiang, Feng-Huei, 江逢回
• Other Authors: Chen, Chin-Hsing
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/72628567302539798840

碩士 === 中國文化大學 === 化學工程與材料工程學系奈米材料碩士班 === 101 === This paper aime to discuss the Polylactic acid (PLA) and nano alumina, glass fibers and carbon fibers composites formed by the processing process, physical properties, mechanical and thermal properties of. Prepared by mixing PLAat the same nano-alumina content nano composites with different content when mixing weight percent of fibers by mixing. After forming the different levels of weight percent of the fiber hybrid / Alumina reinforced polylactic acid morphology (FT-IR, XRD, Particle, SEM, TEM, ESCA), physical properties (Contact Angle, Density, Void content), mechanical properties (Hardness, Flexural test, Tensile test, Impact strength, Wearing), thermal properties (TGA, MI, HDT, Vicat, DSC, TMA), Dynamic mechanical properties (DMA) for PLA resin properties and improve the degree of difference. Experimental results show, by FT-IR, the crystal structure of fiber hybrid / Alumina reinforced polylactic acid nanocomposites was not determined; in particle size analysis show nano alumina are both in nano specification; at XRD test only see PLA peaks in PLA; at ESCA test can see nanocomposites contains fibers; Good dispersion can be seen in SEM and TEM.Physical properties of the test adding nano alumina powder can indeed enhance the density of the fibers. At the same time the contact angle increases as the amount of fiber added to enhance the properties of;In the mechanical properties of the testshowed that the tensile and flexural, hardness and impact are effectively enhance, and wearing index decreased slightly wear volume in a small amount of add. In the thermal properties, the thermal properties of the fibers with nano-alumina powder is added increases, the heat resistance significantly improve.The electrical properties, the increase in the amount added with the fiber, the electromagnetic wave absorption and shielding effectively improved. Keywords: PLA, nano-alumina, nanocomposites, glass fiber, carbon fiber