http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 주제어 : Polyketone(폴리케톤) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
내진 구조용 압축재로 활용을 위한 폴리케톤의 특성 평가
이헌우,노진원,김영찬,허종완 대한토목학회 2024 대한토목학회논문집 Vol.44 No.2
The purpose of this study is to propose a new material called polyketone to overcome the limitations of polyurethane, which is currently used as a compression member in the field of earthquake-resistant structures. Although existing polyurethane has excellent elastic properties, it tends to be insufficient to recover the displacement that occurs in the structure. On the other hand, polyketone has excellent strength performance and is attracting attention as an eco-friendly material. In order to evaluate the compression properties of polyketone, which has these advantages, we would like to conduct a comparative experiment with polyurethane that was previously used. The speed dependence of polyketone was identified through simple compression experiments and experimental speed changes under repeated loading conditions, and additional compression behavior was applied to confirm compression behavior characteristics. Polyketone showed compressive strength about 10 times higher than that of polyurethane, and its excellent recovery characteristics were demonstrated by its deformation recovery ability about 14 times higher at relatively small displacements.
-
유성환(Sunghwan Ryu),윤정환(Junghwan Yoon),윤주호(Ju-ho Yun),유승을(Seung-eul Yoo) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
Automobile interior products are researching and developing automobile parts in three directions of high quality, environment friendly and light weight. As the living standard is improved and passengers stay in the automobile, research on environmentally friendly materials is studied in various aspects In fact. Eco-friendly materials are currently being applied to press forming other than extrusion and injection, and since the natural fiber composite material through injection molding has not been used as an automotive interior product up to now, the test piece is molded through extrusion and injection molding The matrix polymer used in this study was Polyketone (PK or POK) developed by Hyosung. The natural fiber used in this study was Kenaf (lignin removal, lignin The test specimens were prepared by extrusion molding and injection molding using fibers and Sisal (lignin-removing) fibers. The recipe was made before and after the addition of additives (antioxidants, radical formation inhibitors, UV stabilizers) After the optimized mixing ratio was selected, the test specimens were molded for each fiber content, and then the mechanical properties and chemical properties were changed through UTM, FT-IR, DSC, TGA, GCMS and FE-SEM The morphology at the interface between matrix polymer and fiber was analyzed. As a result of the study, it has been studied that the dispersion of physical properties decreases as the additives are added. As the content of fibers increases, the tensile-related properties decrease and flexural-related properties increase. As the content of fibers increases, In order to increase the dispersibility of fiber, it was confirmed by analyzing that fiber is dispersed evenly on the outer surface of specimen when glass bubble is added..
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
