| 초록 |
Fuel tube for automotive consist of multi-layers which are nylon-EVA-PVdF-nylon and these fuel tube need to reduce failure rate and simplify the number of layers owing to cost benefit and productivity. Fuel tube was mainly used nylon 12 because they have high dimensional stability, lower moisture abxorption compare to other nylons. Fuel tube with mult-layers have a good barrier property against fuel gas emission but they have disadvantages of complicate manufacturing process to make multilayered fuel tube and require many polymer materials. In our study we try to reduce the number of fuel tube layers, so the layered nanosilicates with highly aspect ratio was used for nylon 12 nanocomposite. Firstly we prepared nylon 12 nanocomposite via internal mixer and found out the well dispersed nanosilicate in nylon 12 matrix from TEM. Secondly we will prepare nylon 12 nanocomposite via twin screw extruder and investigate the scattered silicate particles within the nylon 12 matrix through TEM (including XRD). And we will suggest optimum processing temperature, screw rpm etc. |
