Influence of binder composition on the rheological behavior of injection-molded microsized SiC suspensions
来源期刊：International Journal of Minerals Metallurgy and Materials2008年第3期
论文作者：Islam S.Humail
文章页码：297 - 301
摘 要：<正>The influence of four kinds of binders consisting of paraffin wax（PW）,random-polypropylene（RPP）,high-density poly- ethylene（HDPE）,and stearic acid（SA）on the rheological behavior of injection-molded SiC feedstocks was investigated over a tem- perature range of 150℃to 180℃and a shear rate range of 4 s-1 to 1259 s-1.The results showed that all the feedstocks exhibited pseudoplastic flow behavior.The wax-based binder of multipolymer components（PW-RPP-HDPE）exhibited better comprehensive rheological properties compared with the binder of monopolymer components（PW-RPP or PW-HDPE）.The addition of 5wt% SA to the binder could reduce the viscosity of the feedstock but enhance the rheological stability by improving the wettability between the binder and the SiC powder.The binder of 65wt% PW+15wt% HDPE+15wt% RPP+5wt% SA was found to be a better binder for microsized SiC injection molding.
Islam S.Humail
摘 要：<正>The influence of four kinds of binders consisting of paraffin wax（PW）,random-polypropylene（RPP）,high-density poly- ethylene（HDPE）,and stearic acid（SA）on the rheological behavior of injection-molded SiC feedstocks was investigated over a tem- perature range of 150℃to 180℃and a shear rate range of 4 s-1 to 1259 s-1.The results showed that all the feedstocks exhibited pseudoplastic flow behavior.The wax-based binder of multipolymer components（PW-RPP-HDPE）exhibited better comprehensive rheological properties compared with the binder of monopolymer components（PW-RPP or PW-HDPE）.The addition of 5wt% SA to the binder could reduce the viscosity of the feedstock but enhance the rheological stability by improving the wettability between the binder and the SiC powder.The binder of 65wt% PW+15wt% HDPE+15wt% RPP+5wt% SA was found to be a better binder for microsized SiC injection molding.
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