巻号一覧
22 巻, 3 号
選択された号の論文の13件中1～13を表示しています
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第4報 切断強伸度におよぼす分子量の効果高久 明, 岸 直行1966 年 22 巻 3 号 p. 103-108
発行日: 1966/03/10
公開日: 2008/11/28
ジャーナル フリーThe variation of creep and creep recovery with temperature, and the ultimate properties under a condition of constant load have been measured for acrylonitrile-methylacrylate copolymeric fibers composed of different molecular weights. In the experiments of creep and creep recovery, the response against external force becomes sensitive with decreasing molecular weight. It is assumed that the response against external force is determined in the relatively low ordered region formed around the end points of molecular chains. In the creep rupture experiments, the following results are obtained. The effects of the molecular weight are clearly observed at the rubbery or leathery zone of the compliance at break and the increase of molecular weight makes the leathery zone shift towards longer times if a reference temperature is fixed at a constant value. In the temperature region approximately from 80 to 130°C; the temperature dependence of the shift factor aT along the logarithmic axis of the time to break is unaltered and independent of the molecular weight. The composite curves of the logarithmic tensile strength plotted against the logarithmic time to break exhibit an identical shape, where the composite curves are obtained from the measurements in the same temperature region stated above. In contrast, the temperature dependence of aT approximately above 130°C and the composite curves of the tensile strength obtained at the corresponding temperature region show different behaviours in accordance with the values of the molecular weight. The maximum value of the ultimate elongation decreases with increased molecular weight. These effects of molecular weight may be explained in terms of “doubly bonded structure” discussed by Andrews and Kimmel.抄録全体を表示PDF形式でダウンロード (402K) -
第1報 ハードニングによる羊毛フェルトの形成清水 昭二, 池上 登, 酒井 啓吉, 坂口 康義1966 年 22 巻 3 号 p. 109-113
発行日: 1966/03/10
公開日: 2008/11/28
ジャーナル フリーLaps of parallel-laid webs were used as materials and hardened by the plate hardening machine. During this process the area of laps showed practically no change, but their breaking strength by g/tex unit remarkably increased. These facts may be due to an increase of inter-fiber bonds in the direction of thickness of laps.
The plot of breaking strength vs. hardening time showed a sigmoidal-curve. This may be explained by a sharp increase of interlocking in an early stage of hardening process and a gradual increase of resistance for compression in the later stage.
Lateral breaking strength of the hardened felt is always lower than longitudinal one, while the ratio of the both strengths increased from 0.25 to 0.55 by hardening. This increase of the strength ratio may be due to an increase of fiber orientation in the width direction of the hardened felts. A prolonged hardening of felt is undesirable from the point of view of the quality of products.抄録全体を表示PDF形式でダウンロード (371K) -
第2報 縮充工程における繊維の挙動清水 昭二, 池上 登, 坂口 康義1966 年 22 巻 3 号 p. 113-117,109
発行日: 1966/03/10
公開日: 2008/11/28
ジャーナル フリーThe effect of uni-axial compression force during hand milling on the milling behaviours of wool felt was investigated. When milling force is applied to the length direction, the felt shrinks remarkably in this direction, while there is little or no shrinkage in the width. In this case, fibers in wool felt are re-orientated into the width direction with the progress of milling.
The breaking strength of the milled felt is greater in the width direction than in the length, while the breaking extention works opposite from this.
This may be caused by the fact that the fiber orientation in the width direction is higher than that in the length.
On the other hand, when milling force is applied to the width direction, the felt shrinks mainly in this direction, fibers in the felt are re-orientated into the length direction, and the breaking strength of the milled felt becomes higher in the length direction than in the width.
The longitudinal and lateral breaking strengths and breaking extention of the felts with the same degree of area shrinkage are little affected by the milling courses, but evidently affected by the degree of length and width shrinkage of the felts.
The felt of proper shrinkage of length and width showed nealy the same breaking strength and extention in longitudinal and lateral directions.抄録全体を表示PDF形式でダウンロード (976K) -
第3報 縮充中におけるフェルトの3次元的構造の変化清水 昭二, 池上 登, 坂口 康義1966 年 22 巻 3 号 p. 117-120,110
発行日: 1966/03/10
公開日: 2008/11/28
ジャーナル フリーThe shrinkage of hardened felt during milling process was studied using a roller type milling machine. Relations between dimentional changes such as length, width and thickness in milling process and breaking strength, breaking extention and splitting resistance of the milled felt were also examined.
Up to 30-35% shrinkage of area (SA), contraction of the felts is caused mainly by the shrinkage in longitudinal direction. Above this AS, the rate of area shrinkage of the milled felts distinctly slows down, while the rate of shrinkage in width increases and thickness begins to increase. At this SA (30-35%), breaking strength of milled felt shows the maximum value, while its breaking extention shows the minimum value. Splitting resistance rises as SA is increased, and the rate of the increase becomes evidently larger above 30-35% of SA.
Assuming that breaking strength and splitting resistance are mainly affected by the degree of entanglement of wool fibers and the degree of fiber orientation, the experimental results are deduced that the degree of fiber orientation in the vertical direction would increase over 30-35% of SA.抄録全体を表示PDF形式でダウンロード (385K) -
中村 勉, 竹村 寿二1966 年 22 巻 3 号 p. 121-124
発行日: 1966/03/10
公開日: 2008/11/28
ジャーナル フリーThe yellowing work of H2O2 produced by exposing aqueous tyrosine, tryptphane and their mixed solutions to light was studied.
First, from the spectro-trasmittance of these amino acid solutions added and without H2O2 in advance, exposed to the light emitted by the weather meter for various time intervals, the dominant wavelengths corresponding to hue of these solutions was determined.
As the results, the dominant wavelengths of these solutions with H2O2 were similar to these without H2O2. In regard to the yellowing speed of the mixed solutions with H2O2, the empirical formula as to function existing between percentage transmittance T (%) or luminosity Y (%) and exposure time t (hr) is well represented by our familiar formula of the mixed solution without H2O2, that is, T (Y)=a (t-k)-b. But in this case the additional constant k equals zero. And so, as soon as it is exposed to the light it makes an appearance of color. Next, the produced quantities of H2O2 and the yellowing by exposing of these amino acid solutions to light for various time intervals were examined.
In consequence, H2O2 yields are closely connected with the yellowing degree, induction periods and photosensitization of these solutions. Accordingly the yellowing of tyrosine and tryptphane series by light are dominated by H2O2 yield as the initiator of coloring.抄録全体を表示PDF形式でダウンロード (355K) -
第4報 チューブ位置,ローラゲージの影響 第5報 糸道角度・スライバ太さの影響黒崎 新也, 近田 富士雄1966 年 22 巻 3 号 p. 125-133
発行日: 1966/03/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (599K) -
第1報 未加工繊維集合体の場合佐貫 治夫, 戸辺 武, 安藤 克彦1966 年 22 巻 3 号 p. 134-141
発行日: 1966/03/10
公開日: 2008/11/28
ジャーナル フリーThe wetting behavior under various pressures of loose fiber assemblies were examined and the results were compared in order to estimate the water-resisting properties of various commercial proofing methods. This procedure was considered to throw some light on the penetration mechanism of water into fabrics in the direction perpendicular to the surface. In this article, measurements on the degrees of penetration of distilled water in the assemblies of non-proofed fiber are reported, changing the types of fiber, the porosities of assemblies (degrees of openings) and the hydro-static pressures. Porosities of the assemblies were 70, 80, and 90%, and the hydrostatic pressures 15, 40 and 65g•wt/cm2. The rate of movement of water front downward through the assemblies was measured and the primary water-resisting index was calculated from this. The rate of flow of water (volume per unit time) was obtained after the water front had reached the bottom of the assemblies and then the secondary water-resisting index was calculated.
Remarkable difference in these two indices was found in the different types of fibers in the case of the same porosity and pressure. The water-resisting effect of the assemblies of synthetic fiber is very small compared with that of cellulosic fibers. It may be pointed out, therefore, that an effective water-proofing finish is required in the synthetic fiber fabrics which are subjected to hydrostatic pressure.抄録全体を表示PDF形式でダウンロード (664K) -
1966 年 22 巻 3 号 p. S122
発行日: 1966年
公開日: 2009/03/26
ジャーナル フリーPDF形式でダウンロード (39K) -
大林 謙朗1966 年 22 巻 3 号 p. S63-S70
発行日: 1966/03/10
公開日: 2009/03/26
ジャーナル フリーPDF形式でダウンロード (513K) -
梶原 康敬1966 年 22 巻 3 号 p. S71-S77
発行日: 1966/03/10
公開日: 2009/03/26
ジャーナル フリーPDF形式でダウンロード (529K) -
下山 孝敏1966 年 22 巻 3 号 p. S78-S83
発行日: 1966/03/10
公開日: 2009/03/26
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佐藤 守1966 年 22 巻 3 号 p. S84-S88
発行日: 1966/03/10
公開日: 2009/03/26
ジャーナル フリーPDF形式でダウンロード (377K) -
河合 徹1966 年 22 巻 3 号 p. S89-S93
発行日: 1966/03/10
公開日: 2009/03/26
ジャーナル フリーPDF形式でダウンロード (1537K)
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