ポリプロピレンの無水マレイン酸グラフト反応に及ぼす混練装置および混練条件の影響について
The Effect of Mixer Type and Operating Conditions on Graft Reaction of Maleic Anhydride on Polypropylene
井上公雄・山根泰明・山際信之
Inoue, Kimio / Yamane, Yasushi / Yamagiwa, Nobuyuki
This study investigates effects of mixer type and operating conditions on the graft reaction of maleic anhydride (MAH) on polypropylene using a 2-stage type (NEX-T 50 ; combination of continuous mixer NCM50 with single screw extruder, KE65) and 1-stage type (corotating twin screw extruder KTX44). The graft reaction by the NEX-T50 achieved a higher reaction level than that achieved by the KTX44. The high grafting efficiency of the NEX-T50 is attributed to microscopic dispersive and distributive mixing of MAH and peroxide in polypropylene in the NCM at a relatively low resin temperature. The MAH grafted PP was then blended with PA6, and the impact strength of the alloy was measured. The alloy of the PP grafted using the NEX-T50 showed higher impact strength than that produced in the KTX44.
Key words: Graft reaction / Polypropylene / Maleic anhydride / Continuous mixer / Twin screw extruder / Polymer alloy