繊維の圧縮特性に関する研究 : (第 21 報)単独繊維塊の履歴に見る温度(負の温度領域), 圧力, 持続性, 回復性, 空隙率及び体積歪率の関係

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The purpose of the research in this paper is to make clear the compressional behaviour through the relation of pressure, durability, property of recovery, porosity percentage, strain of volume percentage, critical porosity percentage in theory and critical strain of volume percentage in theory in the hysteresis of single fibre's lump. Furthermore, the purpose of the research in this paper is to make clear the compressional behaviour through the behaviour of temperature dependence wiht hysteresis phenomenon. Where, the author used the trial manufactured apparatus which is introduced in previous thesis, Part twelve. And this trial manufactured apparatus is Japanese Patent Number 486847. The author searched for relation among the many important factors. Here, P (kg/cm^2) represents the pressure from the pressure 0 (kg/cm^2) to 5 (kg/cm^2) at the moment : N (No.), number of times in the hysteresis of increasing and decreasing of pressure : T (℃), temperature : E (kg/cm^2), limit point of continuation in the compression : S (kg/cm^2), start point of recovery : ε(%), porosity percentage : ε'(%), critical porosity percentage in theory : Ev. p (%), strain of volume percentage : E'v. p (%), critical strain of volume percentage in theory : The author concentrated special attention on the increasing and decreasing of pressure from 0 (kg/cm^2) to 0.05 (kg/cm^2). The number of times in the hysteresis is from the first time (I) to the fifth time (V) in the increasing and decreasing of pressure. As the single fibre's lump of test piece in this experiment is the following. Namely, Viscose Rayon (Crimped Dull) 3 deniers x 76m/m. Nylon 3 deniers x 70m/m and Beslon 3 deniers x 55m/m have been used. On these test pieces please refer to Table 1. The arrangement of all these single fibre's lump is case of non-parallel in direction of single fibre's arrangement. And all these fibres is not straight filament, but crimped fibre. As the first step, range of temperature set within the limits from 0℃ to -20℃. And this experiment of behaviour of temperature dependence was tried by each step of -5℃ of temperature. Before this experiment, greatest possible care taken to the regulate and arrangement the test pieces used. Namely, the author made control of fibre's weight into the gum ball, hand carding of single fibre's lump and moisture regain into each single fibre's lump as a test piece in this experiment. Also, before the experiment the author must obtain these factors as a measuring value for calculating porosity percentage ε(%), critical porosity percentage in theory ε'(%), strain of volume percentage Ev・p (%) and critical strain of volume percentage in theory E'v・p (%). Namely, these factors is made by ten factors. The factor is Wt (g), Vt (cm^3), Wr (g), {Wr+Wf} (g), Wf (g), Vr (cm^3), Vo (cm^3), Vf=Wf/δf (cm^3), T (℃) and δM/T (g/cm^3). On these ten factors please refer to Table 2. Further, this graph is a drawing of the development tendency among the temperature T (℃), difference of porosity percentage ε_D (%) and difference of strain of volume percentage Ev・p_D (%) in that time of pressure P=0 (kg/cm^2) and 5 (kg/cm^2) through the test pieces, Viscose Rayon (Crimped Dull) C, Nylon N and Beslon B. Here, the author examined compressibility, compressional resilience, durability of compression, property of recovery in compression, comparison of porosity percentage ε(%) and critical porosity percentage in theory ε'(%), comparison on the strain of volume percentage Ev・p (%) and critical strain of volume percentage in theory E'v・p (%) through the analytical research of N∿E, N∿S, N∿ε, N∿Ev・p, N∿ε_<(D)> and N∿Ev・p_<(D)> broken line graph under the temperature of each step from 0℃ to -20℃. This broken line graph is shown by the experimental sample of kinds of fifteen. Namely, these experimental samples is shown by the number from one to fifteen. These experimental samples of kinds of fifteen is ma
金城学院大学の論文
1988-03-20

著者

寺島功
金城学院大学

繊維の圧縮特性に関する研究 : (第 21 報)単独繊維塊の履歴に見る温度(負の温度領域), 圧力, 持続性, 回復性, 空隙率及び体積歪率の関係

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