Drying and Debinding Behavior of Extruded Pipes Containing a Water-Based Binder

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概要

• 論文の詳細を見る

• Zirconia, stainless steel powders and their composite powders have been extruded using an aqueous solution of a water-soluble polymer, hydroxypropyl methylcellulose (HPMC) as a binder. The powder-binder mixtures were extruded into pipes by a multi-billet coextrusion technique. The drying and debinding behavior of the extruded pipes was experimentally verified. The pore sizes and their distribution in dried extrudates obtained from composite powders depend to a large extent on the mixing proportion of the two powders. The pores due to evaporation of the moisture in the drying process accelerate the elimination of the HPMC polymer by promoting the diffusion of oxygen and degraded products. The presence of some oxygen is necessary in order to remove the HPMC polymer completely. The HPMC may be removed during the heating period of sintering operations without any special debinding treatments, provided some oxygen is present.

• 社団法人 粉体粉末冶金協会の論文
• 2001-01-15

著者

• Ikeda Keisuke

  Department Of Organic And Polymeric Materials Tokyo Institute Of Technology

• Takeda Takenobu

  Department Of Mechanical Systems Engineering Faculty Of Engineering Yamagata University

• CHEN Zhongchun

  Department of Mechanical Systems Engineering,Faculty of Engineering,Yamagata University

• MURAKAMI Tadasu

  Department of Materials Processing,Graduate School of Engineering,Tohoku University

• Chen Zhongchun

  Department Of Mechanical Systems Engineering Faculty Of Engineering Yamagata University

• Murakami Tadasu

  Department Of Materials Processing Graduate School Of Engineering Tohoku University

• Ikeda Keisuke

  Department Of Materials Processing Faculty Of Engineering Tohoku University

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