Study on Preparation and Addition Material Properties of Micro-Porous PP with High Porosity by Stretching Operation

• Main Authors: Tseng, Wei-Jia, 曾偉嘉
• Other Authors: Chen, Chun-Sheng
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/05568822343481265932

碩士 === 龍華科技大學 === 機械工程系碩士班 === 102 === In recent years, Membrane technology and science has being more extensive, and play an important role in the world. This study were prepared to develop microporous membranes through melt extrusion followed by stretching. First, using different parameters such as roll temperature (50°C、70°C、90°C)、Draw speed(5m/min、6m/min、7m/min). Second, using the best parameter to develop the effect of second hot stretching, such as hot stretching speed (50 mm/min、100 mm/min、200 mm/min) and hot stretching ratio (50%、100%、200%). Finally, add material properties for comparison, the PEO and β nucleating agents were added to the weight of the PP in the percentage of 1% The results showed that the optimal parameters for the extrusion molding process of the roll temperature of 90°C, Draw speed 5m/min. Using the best parameter to develop the effect of second hot stretching, such as hot stretching speed 200mm/min, and hot stretching ratio 100%. The results show that best porous membrane has porosity and mean pore size, its 21% and 51.79nm.