繊維の圧縮特性に関する研究(第 33 報) : 単独繊維塊の外圧と体積歪率の関係線図における物理的要因の解明 : 正の温度領域

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The purpose of the research in this paper is to make clear physical chief factors on the compressional behaviour of fibres in case of each single fibre's lump from the relative curve between pressure and strain of volume percentages. Here, as physical chief factors on the compressional behaviour of fibres is following, total strain of volume percentage, strain of volume percentage in that time begin an experiment Do (%), total compression D (%), elastic compression or compressive elasticity Dc (%), residual compression Dp (%), degree of compressional resilience or compressive elastic degree Dc/D (%), compressive percentage or compressional percentage D/Do (%), total quantity of energy A+B (cm^2), quantity of plastic energy A (cm^2), quantity of elastic energy B (cm^2), degree of elasticity into compressional energy B/A+B (%), permanent deformation Do-D_1/Do (%)=Dp/Do (%), elastic after effect I_1∿I_3 (%), strain of volume percentage Ev・p (%), compressional curve Io∿I, recovery curve I∿I_1,pressure P (kg/cm^2), critical strain of volume percentages in theory E'v・p (%). Also, as the single fibre's lump of the test piece in this experiment is following. Namely, Viscose Rayon (Crimped Dull) 3 deniers×76m/m, Nylon 3 deniers×70m/m and Beslon 3 deniers×55m/m have been used. The arrangement of all these fibres is case of nonparallel in direction of single fibre's arrangement. As the range of temperature in this experiment set within the limits from 10℃ to 80℃. And this experiment was tried by steps of 10℃ of temperature each. Also, all of these fibres is not straight filament, but crimped fibre. This experiment is to examine physical chief factors on the compressional behaviour in these single fibre's lump by the aid of improved equipment, trial manufactured equipment in a series of this paper, registered as Patent Number 486847 in Japanese Patent Office. As the first step adopted case of the first time in the increasing and decreasing of pressure. And the experiment of this thesis is tried under the pressure from 0 (kg/cm^2) to 5 (kg/cm^2) at the each stages of the increase and decrease in pressure. The author concentrated special attention on the increase and decrease of pressure from 0 (kg/cm^2) to 0.05 (kg/cm^2). The results of these experiments of single fibre's lump was investigated through the relation that is made by following each graph. Namely, P∿Ev・p curve is a relative curve between pressure P (kg/cm^2) and strain of volume percentage Ev・p (%) in that time of each step from 10℃ to 80℃ in temperature through the test pieces, Viscose Rayon (Crimped Dull), Nylon and Beslon. The theoretical equation of strain of volume percentage Ev・p (%) and critical strain of volume percentages in theory E'v・p (%) under pressure P is following, Ev・p (%)=ΔVp/Vo×100 (%) also, E'v・p (%)=(1-Vf/Vo)×100 (%)=(Vo-Vf)/(Vo)×100 (%)=(1-ε')×100 (%) but, ΔVp (cm^3) =πr^2・ℓ (cm^3) Here, Vo (cm^3) represents the volume of fibre under the pressure P=O (kg/cm^2) at the moment : ΔVp (cm^3), discharged air quantity under the pressure P (kg/cm^2) at the moment : Vf (cm^3), real volume of fibre Vf=Wf/δf (g/cm^3) : δf (g/cm^3), specific gravity of fibre : Vp (cm^3), volume of fibre under the pressure P (kg/cm^2) at the moment : r (mm), radius of hole of glass capillary tube : ℓ (cm), displaced length of column of mercury into the glass capillary tube. In this experiment, compressional curve Io∿I and recovery curve I∿I_1 between pressure P (kg/cm^2) and strain of volume percentage Ev・p (%) have been used. And as the number of times adopted case of the first time in the increasing and decreasing pressure. Quantitative measurement of fibre is not easy to conduct chiefly because of its indifinite shape. The important condition required for the apparatus is ever to exactly record the changes of stress imposed on the single fibre and single fibre's lump. Before the experiment, the author made control of singl
1998-03-20

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 33 報) : 単独繊維塊の外圧と体積歪率の関係線図における物理的要因の解明 : 正の温度領域

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