Prepared-Characterized-Mechanical-Thermal Properties of PPgMA/MMT and HDPE/MMT Nanocomposites

• Main Authors: Shis-Shuan Tung, 童士軒
• Other Authors: Sung-Po Liu
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/47624980653045059909

碩士 === 清雲科技大學 === 機械工程研究所 === 97 === This experiment used the melt-mixing layer of interpolation procedure, to prepare the modified polypropylene (PPgMA) / montmorillonite (MMT), high-density polyethylene (HDPE) / montmorillonite nano-clay complex of the polymer material (PCN), and to explore their mechanical properties. PPgMA as well as HDPE are matrix materials; add Bai Kong (BAI KONG, PK-8342) MMT to strengthen the material. Also, use HDPE and maleic anhydride (MA) as the surfactant interface. Afterward, start to add the agentsdicumylperoxide (DCP), which modifies the hot plastic spectrometer after the mixing method PCN test piece is prepared in order to explore weight percentage while adding different percentages of MMT, and the DCP, which contains research inter-layer distance and mechanical properties that determine the best of one's concentration and processing parameters. In order to understand and improve these soft and weak mechanical properties of HDPE, first we add MMT as reinforcement material, and then use MA and DCP as the surfactant; to join the pieces of HDPE together, making it acquire polarization. After that, use a Plastograph-Mixer with the twin-screw mixed method to obtain standard shaped specimens of Polymer-Clay Nanocomposites (PCN) to prepare HDPE / MMT nanocomposites pellets. By adding the different weight percentages (1, 3, 5wt%) of MMT, and 2:1 of MA and MMT, the layer distance of MMT and mechanical property of nanocomposites was investigated. The test shows that the hardness and wear-resistance have a good linear relationship with the HDPE / MMT nano-complex material, the higher hardness will have higher wear-resistance. Also, joining the DCP after modified the rigid reinforced HDPE, HDPE base material will significantly improve their impact strength, hardness, wear intensity, excluding the reduce on the tensile strength. As a result of improving on the wear resistance, impact strength, and hardness, the products life cycle and safety issue will increase. In addition when PPgMA / MMT nano-complex material, the hardness improved significantly as 1wt%, and decrease when 3 and 5 wt%. But the tensile strength decreased with the increase in hardness, the results showing with the general perception of the nature of the soft and firmware is different.