화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.59, No.3, 305-315, August, 2021
DOI10.9713/kcer.2021.59.3.305  Export Citation
교합형 동방향 이축압출기의 스크류 조합에 대한 고찰
A Review on the Screw Configuration of Intermeshing Co-rotating Twin Screw Extruder
이시춘, 김형수1, †
  • 단국대학교 공과대학 화학공학과, 16890 경기도 용인시 수지구 죽전로 152
  • 1중원대학교 항공재료공학과, 28024 충북 괴산군 괴산읍 문무로 85
Shichoon Lee, and Hyungsu Kim1, †
  • Department of Chemical Engineering, Dankook University, 152 Jukjeon-ro, Yongin-si, Gyeonggi, 16890, Korea
  • 1Department of Aero-Materials Engineering, Jungwon University, 85 Munmu-ro Goesan-eup, 28024, Korea
E-mail:
초록
교합형 동방향이축압출기는 고분자재료의 컴파운딩에 주로 사용되는 기계이다. 이축압출기는 가공하는 재료와 생산제품에 적합한 스크류 조합을 설계하여 품질과 생산성이 양호한 컴파운딩공정을 구축할 수 있다. 스크류조합을 구성하는 스크류와 니딩 엘리먼트의 종류, 형상 및 사양에 대하여 정리하였고, 각각의 엘리먼트가 조합될 때 고분자 수지의 가공성에 미치는 영향에 대하여 알아보았다. 범용수지의 대량생산에 보편적으로 적용되는 스크류 조합의 원리를 설명하였고, 피딩, 용융혼련 및 미터링영역에 적합한 스크류조합의 방향과 사례를 나열하였다. 액상첨가제나 무기필러의 사이드피딩, 반응압출, 탈기공정, 밝은 색상과 투명도가 요구되는 제품의 생산 및 겉보기비중이 낮은 재료의 가공 등 각각의 경우에 맞는 스크류조합의 방향과 원리를 제시하였다.
An intermeshing corotating twin screw extruder is mainly used for compounding polymeric materials. Twin screw extruder can adopt modular-type screw configurations, which directly controls the quality and productivity of the products. The types, shapes, and specifications of the screw and kneading elements are summarized, and the effects of screw configuration on the processabiliy of the materials are discussed. The principles of screw configuration universally applied to mass production of general-purpose resins are explained, and the guidelines of screw combination according to the roles of feeding, melt mixing, and metering zones are listed. The strategies of screw combination suitable for various cases, such as side feeding of liquid additives or inorganic fillers, reactive extrusion, devolatilization process, production of products requiring bright color and transparency, and processing of materials with low apparent specific gravity, are presented.
Keywords:Twin screw extruder;Screw configuration;Compounding;Polymer processing
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