Study of injection molded microcellular polyamide‐6 nanocomposites
Tóm tắt
This study aims to explore the processing benefits and property improvements of combining nanocomposites with microcellular injection molding. The microcellular nanocomposite processing was performed on an injection‐molding machine equipped with a commercially available supercritical fluid (SCF) system. The molded samples produced based on the Design of Experiments (DOE) matrices were subjected to tensile testing, impact testing, Dynamic Mechanical Analysis (DMA), and Scanning Electron Microscope (SEM) analyses. Molding conditions and nano‐clays have been found to have profound effects on the cell structures and mechanical properties of polyamide‐6 (PA‐6) base resin and nanocomposite samples. The results show that microcellular nanocomposite samples exhibit smaller cell size and uniform cell distribution as well as higher tensile strength compared to the corresponding base PA‐6 microcellular samples. Among the molding parameters studied, shot size has the most significant effect on cell size, cell density, and tensile strength. Fractographic study reveals evidence of different modes of failure and different regions of fractured structure depending on the molding conditions. Polym. Eng. Sci. 44:673–686, 2004. © 2004 Society of Plastics Engineers.
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Tài liệu tham khảo
Gilman J. W., 1997, SAMPE J., 33, 40
Kumar V., 1992, SPE ANTEC Tech. Papers, 38, 1508
Martini J. E., 1982, SPE ANTEC Tech. Papers, 28, 674
Baldwin D. F., 1992, SPE ANTEC Tech. Papers, 38, 1503
Shimo M., 1993, SPE ANTEC Tech. Papers, 39, 1844
Kumar V., 2002, SPE ANTEC Tech. Papers, 60, 1892
Cha S. W., 1992, SPE ANTEC Tech. Papers, 37, 1527
Park C. B., 1992, ASME, Cellular Polymers, 38, 69
Geol S. K., 1994, Polym. Eng. Sci., 34, 113
Baldwin D. F., 1992, ASME, Cellular Polymers, 38, 109
Park C. B., 1993, SPE ANTEC Tech Papers, 39, 1818
Baldwin D. F., 1992, ASME, Cellular Polymers, 38, 109
Han X., 2000, SPE ANTEC Tech. Papers, 46, 1857
M.Shimbo K.Nishida T.Heraku K.Iijima T.Sekino andT.Terayama Foams '99 First International Conference on Thermoplastic Foam Parsippany New Jersey 132(1999).
M.Shimbo H.Kawashima andS.Yoshitani Foams '2000 Second International Conference on Thermoplastic Foam Parsippany New Jersey 162(2000).
Jacobsen Kai, 2000, SPE ANTEC Tech. Papers, 46, 1929
Xu J., 2001, J. Injection Molding Tech., 5, 152
Park C. B., 2000, Foam Extrusion, 263
Wang J., 2001, Gaofenzi Tongba, 6, 8
Michaeli W., 2002, Kunststoffe, 92, 48
P.Svoboda C.Zeng H.Wang Y.Yang H.Li L. J.Lee andD.Tomasko 2002 NSF DMII Grantee and Research Conference San Juan Puerto Rico (January2002).
Zeng C., 2002, SPE ANTEC Tech Papers, 60, 1504
Han X., 2002, SPE ANTEC Tech Papers, 60, 1915
Peace G. S., 1993, Taguchi Method: A Hands‐on Approach
M. J.Solomon A. S.Almusallam K. F.Seefeldt andP.Varadan 219th ACS National Meeting San Francisco (March2000).
Macosko C. W., 1989, NATAS Proceedings, 18, 271