화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.42, No.3, 478-484, May, 2018
DOI10.7317/pk.2018.42.3.478  Export Citation
나일론66/탄소필러 복합체의 가공조제에 따른 물성 및 용융흐름특성 연구
Study on the Melt Flow and Physical Properties of Nylon 66/Carbon Filler Composite with Processing Aid
신경민, 심창업1, 이정석1, 김연철†
  • 공주대학교 신소재공학부 고분자공학전공
  • 1에나인더스트리(주)
Kyung Min Shin, Chang Up Sim1, Jung Seok Lee1, and Youn Cheol Kim†
  • Major in Polymer Science and Engineering, Kongju National University, 1223-34 Cheonan way, Cheonan 31080, Korea
  • 1ENA Industry, 144, Mojeon 1 way, Seonggeo-eup, Cheonan 31045, Korea
E-mail:
초록
고함량 탄소필러의 첨가로 인해 고분자/탄소필러 복합체의 용융흐름특성이 불량하여 기존의 압출공정 또는 사출공정을 통해 제품으로 제조하는 것이 어렵다. 본 연구에서는 나일론66/탄소필러 복합체의 용융흐름특성과 물성에 대한 가공조제의 영향을 고찰하고자 하였다. 탄소필러 종류로는 카본블랙(CB), 다중벽 탄소나노튜브(MWCNT), 니켈코팅 탄소섬유(Ni-CF) 등이 사용되었다. 가공조제 종류로는 폴리에틸렌 왁스(L-C102N, L-C121N)와 2,2,6,6-tetramethyl-4-piperidinyl(BIS)을 사용하였다. 나일론66/탄소필러 복합체는 이축압출기(twin screw extruder)를 이용하여 가공조제 종류와 함량을 다르게 하여 다이온도 기준으로 280 °C 에서 제조하였다. BIS가 첨가된 나일론 66/CB/CNT/Ni-CF 복합체의 경우, 용융흐름특성에 대한 개선이 복소점도 및 용융유동지수로부터 확인되었고, 표면저항과 같은 전기적 특성 변화가 거의 없는 것으로 나타났다.
It is difficult to fabricate the product of the polymer/carbon filler composites with high carbon filler content through the conventional extrusion or injection process due to poor melt flow properties. In this study, the effect of processing aid on the melt flow and physical properties of the nylon66/carbon filer composites was discussed. The carbon fillers such as carbon black (CB), multi-walled carbon nanotube (MWCNT), nickel coated carbon fiber (Ni-CF) were used. Polyethylene-wax (L-C102N, L-C121N) and 2,2,6,6-tetramethyl-4-piperidinyl (BIS) were used as the processing aids. The nylon66/carbon filler composites with different processing aid types and content were fabricated by using a twin-screw extruder at 280 °C of die temperature. In case of nylon66/CB/CNT/CF composites with BIS processing aid, an improvement of melt flow properties was certified by the complex viscosities and melt flow index, and there was little change in electrical properties such as surface resistivity.
Keywords:nylon66;carbon filler;electrical property;melt flow properties;processing aid
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