巻号一覧
32 巻, 1 号
選択された号の論文の10件中1～10を表示しています
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岡村 政明, 近田 冨士雄, 黒崎 新也, 清水 二郎1976 年 32 巻 1 号 p. T1-T5
発行日: 1976/01/10
公開日: 2008/11/28
ジャーナル フリーIn the preceding paper, the mechanism of wet drafting was investigated by applying some common methods of drafting analysis. It was shown that the Perfect Drafting occurred in any wet drafting conditions.
In this paper, dynamic characters of wet drafting are discussed by using the methods of process analysis. Output sliver thickness variation is measured in response to step or sinusoidal change of front roller surface velocity. The transient response for conventional drafting shows the remarkable overshoot, especially in larger roller gauge. though the response for wet drafting shows less overshoot. Bode's diagrams in conventional drafting are characterized by the following: The gain curves have the peaks, which become larger as increasing roller gauge and phase curves shift to the side of long wave length. In wet drafting, both gain and phase curves are not influenced by any drafting conditions, moreover, gain has no peak.抄録全体を表示PDF形式でダウンロード (297K) -
後藤 共子, 長野 正満, 山口 正博1976 年 32 巻 1 号 p. T6-T11
発行日: 1976/01/10
公開日: 2008/11/28
ジャーナル フリーThe amorphous stainless steel filaments (s-filament) were Formed by the glass conjugated melt spinning. The amorphous to crystalline transformation in s-filament was observed by electron and X-ray diffraction and electron microscopy. The amorphous filament started to crystallize into a tetragonal crystal(a=5.69Å and c=3.14Å) on heating at 600°C for 15 min. From the observation by scanning electron microscopy it was found that the transformation to the crystalline state began on the surface of s-filament in forms of columnar structure.
The mechanical tests of heat treated s-filament showed that the tensile strength and elongation decreased largely by the treatment above 550°C.抄録全体を表示PDF形式でダウンロード (3272K) -
門屋 卓1976 年 32 巻 1 号 p. P11-P16
発行日: 1976/01/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (453K) -
清水 二郎, 壁矢 久良, 鳥海 浩一郎1976 年 32 巻 1 号 p. T12-T18
発行日: 1976/01/10
公開日: 2008/11/28
ジャーナル フリーIn the previous paper, the twisting mechanism of the air-jet twister was discussed, in which a high pressure air was tangentially ejected to the inner surface of The cell from the small holes to obtain a vortex by which a yarn was twisted. It was recognized that a yarn was twisted by a gyration of yarn in the twister and twist distribution was fundamentally different from that of the false twisting mechanism of frictional type.
Twist distribution in a twisting zone arises from different yarn revolutions which are caused by the propagation of the torque from the highly twisted part of the yarn. It is important to notice the positions of the operational point of yarn twisting as it is the point from which the yarn is twisted and as it is also the point by which the direction of twist propagation is decided.
In this paper, the balloon revolution were measured in the twisting and untwisting zones, and the twist distribution was discussed under the considerations of operational point of twisting and the dependence of torsional rigidity and viscosity of yarn upon the twist number and the tension.
The following results are obtained.
1) It is recognized that the revolution numbers of the balloon which were measured by photo cell detector are equal in the whole twisting and untwisting zone.
2) In the air-jet twister, the balloon revolution gives also the yarn rotation which twists a yarn, but the whole rotation of the yarn is not always given by the ballooning.
3) The theoretical values of the twist distribution, which are calculated by considering the operational point of twisting and untwisting, agree well with the experimental values.抄録全体を表示PDF形式でダウンロード (1688K) -
根本 悦朗1976 年 32 巻 1 号 p. P17-P22
発行日: 1976/01/10
公開日: 2008/11/28
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田中 信行1976 年 32 巻 1 号 p. T18-T23
発行日: 1976/01/10
公開日: 2008/11/28
ジャーナル フリーThe relations between the melting temperature and the composition for the isomorphic copolymers were investigated thermodynamically by assuming the restriction of minor component on the rotation about the skeletal bonds of major component. The derived relationships are of the forms such as Eqs. (6) and (8). There was a good correlation between the numerical values of melting temperatures calculated from Eq. (6) by using the computed results of conformational entropy and enthalpy for the unperturbed nylon 66 and nylon 6T, and the observed melting point data for the isomorphic nylon 66/6T copolymers.抄録全体を表示PDF形式でダウンロード (328K) -
仁平 幸治, 軍司 敏博, 坪井 常世1976 年 32 巻 1 号 p. T23-T31
発行日: 1976/01/10
公開日: 2008/11/28
ジャーナル フリーThe surface color of paper changes depending on observed angle. Such surface color difference were measured by the combination of the Goniophotometer and the optical interference filter.
The larger the amount of specular reflection light in the goniophotometric reflection curve, the closer the chromaticity coordinates come to the light source color on the chromaticity diagram.
The goniophotometric color measured was shown as the color mixture between the light source color and the object color on the chromaticity diagram. The goniophotometric reflection curve was composed of two components of specular reflection and diffuse reflection, and the former presents the light source color, the latter the object color. However it was almost difficult to divide the reflection curve, in the card of rugged surface sample.
It is found that the goniophotometric reflection curves were divided into two components by means of the chromaticity coordinates.
The result of this division confirmed that the distribution curve of diffuse reflection light deviates from the Lambert's cosine law.抄録全体を表示PDF形式でダウンロード (1322K) -
赤外吸收スペクトル測定法の実際畠山 兵衛1976 年 32 巻 1 号 p. P23-P33
発行日: 1976/01/10
公開日: 2008/11/28
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中島 利誠, 片野 仁美, 磯部 恵以子1976 年 32 巻 1 号 p. T31-T36
発行日: 1976/01/10
公開日: 2008/11/28
ジャーナル フリーEquilibrium water sorption isotherms for acrylonitrile (AN)/acrylamide (AAm) random copolymers and polyacrylonitrile (PAN)/polyacrylamide (PAAm) blend polymers were obtained and the sorptive capacity of these polymers was discussed.
At low humidities, the sorptive capacity of random copolymers was higher than that of blend polymers. With increasing relative humidities the sorptive capacity of blend polymers approached that of random copolymers. BET sorption mechanism could be applied to these cases in the relative humidities 10% to 45%. Nm, water content per a CONH2 group, was constant at every composition of polymer. Moreover, Nm of blend polymers was not different from that of random copolymers.
Clustering function showed that polyacrylonitrile had no clustering water over the whole range of humidity, while on polyacrylamide water molecules began to cluster at about 40% relative humidity. On random copolymers there was no clustering at low humidities, and the more acrylamide groups presented in the polymer matrix, the higher was its clustering tendency towards water. Whereas blend polymers had much clustering water even at low humidities for their strong hydrogen bonds between CONH2 groups, its clustering function showed a minimum at about 30% relative humidity where the polymer sorbed the water required to form monolayer.抄録全体を表示PDF形式でダウンロード (349K) -
小林 満, 酒井 哲也, 松本 健次1976 年 32 巻 1 号 p. T37-T41
発行日: 1976/01/10
公開日: 2008/11/28
ジャーナル フリーIt is expected that a considerably strong pipe is produced from the film-band package prepared as a cylinder, especially when the drawn film is used. In this paper, a new type of machine, which is capable to cross-wind up the film-band into a cylindrical form, is proposed and the operating condition of the machine is discussed.
The machine proposed here consists of a long taking-up rod and a couple of disks. The taking-up rod moves in a direction at a constant speed, and disks equipped with letting-off film-band supports and film-band guides, rotate around the rod with a constant rate clockwise and anti-clockwise respectively. In order to stretch the film uniformly over its width and give a good form to the cross-wound film-band package, it is necessary that the film-band guides hold a suitable angle against the axis of taking-up rod. However, the inclination of film-band guide results in that the axis of film-band guide and the axis of taking-up rod do not lie in a plane, and therefore the film-band passing over the guide is twisted between the guide and the rod. The twisting of film-band gives undesirable effects on the state of wound-up package. Then the operating condition to minimize the effect of twisting is studied mainly by experiments.抄録全体を表示PDF形式でダウンロード (1727K)
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