繊維の圧縮特性に関する研究 : (第 26 報)混合繊維塊の外圧と空隙率の関係線図における物理的要因の解明

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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 blended fibre's lump. As physical chief factors on the compressional behaviour of fibres is following, total porosity percentage, porosity 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(%), porosity percentage ε(%), ε(%)=(Do-D)%, compressional curve Io∿I, recovery curve I∿I_1,pressure P (kg/cm^2), percentage of critical porosity in theory ε'(%). Also, as the several kind's fibre of test pieces in this experiment, Viscose Rayon (Crimped Dull), Kanekalon (N-Type), Polynozic, Bemberg and Pylen have been used. The cut-length and fineness of the test piece is 76 milimeters and 3 deniers. And all of these fibres is not straight filament, but crimped fibre. As the blended fibre of the test piece in this experiment, Viscose Rayon (Crimped Dull) X Kanekalon (N-Type), Viscose Rayon (Crimped Dull) X Pylen, Viscose Rayon (Crimped Dull) X Bemberg, Viscose Rayon (Crimped Dull) X Polynozic, Kanekalon (N-Type) X Pylen, Kanekalon (N-Type) X Bemberg, Kanekalon (N-Type) X Polynozic, Pylen X Bemberg, Pylen X Polynozic and Bemberg X Polynozic have been used. The percentages of blending in each blended fibres is 30,50 and 70 percentages. This experiment is to examine physical chief factors on the compressional behaviour in blended fibre's lump of several kind's fibres by the aid of improved equipment, trial manufactured equipment in a series of this paper, registered as Patent Number 486847 in Japanese Patent Office. The experiment of this thesis is tried under the pressure from O (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 O (kg/cm^2) to 0.05 (kg/cm^2). The theoretical equation of porosity percentage ε(%) and percentage of critical porosity in theory ε'(%) under pressure P is following, ε(%)=(Vo-ΔVp-Vƒ)/(Vo-ΔVp)×100(%)=(Vp-Vƒ)/Vp×100(%)=(1-Vƒ/Vp)×100(%) also, ε'(%)=Vƒ/Vo×100(%) but, ΔVp (cm^2)=πr^2.ℓ (cm^2) Here, Vo (cm^2) 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 : Vƒ (cm^3), real volume of fibre Vƒ=Wƒ/δƒ (cm^3) : δƒ (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. also, the theoretical equation on the specific gravity of blended fibre M (g/cm^3) is obtained, M (g/cm^3)=(b(100-X)+aX)/100 (g/cm^3) or M (g/cm^3)=b-(b-a)X/100(g/cm^3) but, X(%)=(b-M)/(b-a)×100(%) Here M (g/cm^3) represents the specific gravity of blended fibre on A-Fibre F(A) and B-Fibre F(B) : a (g/cm^3), specific gravity of A-Fibre F(A) : b (g/cm^3), specific gravity of B-Fibre F(B) : X(%), containing percentages of A-Fibre F(A). Before the experiment, special care taken to the regulate and arrangement the test pieces used. Blending of A-Fibre F(A) and B-Fibre F(B) is conducted by hand carding. Discrimination of blended state between A-Fibre F(A) and B-Fibre F(B) is conducted by a coloring agent of Identification Stain No.4 of Du Pont. In this experiment, compressional curve Io∿I and recovery curve I∿I_1 between pressure P (kg/cm^2) and porosity perce
金城学院大学の論文
1992-03-20

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寺島功
金城学院大学

繊維の圧縮特性に関する研究 : (第 26 報)混合繊維塊の外圧と空隙率の関係線図における物理的要因の解明

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