カーボンペーストの押出し流動特性について

概要

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The extruding flow characteristics of carbon paste for electrode have been examined experimentally by the authors of the present paper. The extruding apparatus and nozzles used in the experiment are shown in Fig. 1. The type of nozzle (the outlet diameter d, the convergent angle A, etc.), the temperature of the paste and inner wall of the cylinder and nozzle, T_p and T_w, are selected as the experimental variables. The relation between the piston velocity V and the extruding piston pressure P is represented as the experimental results in Fig. 2-(1)(2)(3). From these results, new experimental equation [numerical formula] is derived as the fundamental equation of Bingham plastic body in place of Eq. (2), which has hitherto been used. It is found that P_0 is affected by none of the nozzle factors and conditions other than the convergent angle of nozzle at nozzle inlet, A. P_0 is named by the authors as "the ultimate limit of the extruding pressure". The values of P_0 against A are shown in Table I. As regards V_0, the imaginery extruding piston velocity at the ultimate limit pressure, the physical meaning is not clear at this moment, but fairly simple relation is found as is shown in Fig. 3 and Eq. 4. The relationship between fluidity K and other factors (T_p, T_w, d) are found as are shown in Fig. 4.
社団法人日本材料学会の論文
1966-05-15