巻号一覧
26 巻, 10 号
選択された号の論文の6件中1～6を表示しています
- |<
- <
- 1
- >
- >|
-
高橋 亨, 佐藤 一郎1970 年 26 巻 10 号 p. 449-454
発行日: 1970/10/10
公開日: 2008/11/28
ジャーナル フリーThe orientation of Crystalline phase in a tubular extruded polyethylene film during constant width-stretching was studied quantitatively by means of X-ray pole figure technique and biaxial orientation functions.
The experimental results shows that, in the lamellar texture, the b-axis lies prependicular to the screw axis and takes a circular arc-distribution, centering around the screw axis, in the initial stage of a deformation process owing to constant width-stretching. It then becomes, on the average, elliptic-distribution, whose major axis is lying in the transverse direction. The b-axis further orients gradually from the elliptic-distribution to a preferred orientation parallel to the transverse direction as the deformation increases. It is recongnized along with this that the c-axis orientation in the stretching direction proceeds through the (100)[001] plastic slipping and a rotation of the (100) slip-plane around the b-axis.抄録全体を表示PDF形式でダウンロード (335K) -
藤村 敏一, 岩倉 賢次1970 年 26 巻 10 号 p. 455-460
発行日: 1970/10/10
公開日: 2008/11/28
ジャーナル フリーIn order to clarify the rheological properties of polymer blends which is utilized for the modification of polymer, the viscoelastic behaviors in capillary flow of the molten blends of ionomer and ethylene-vinyl acetate copolymer, either of which contain common ethylene monomer unit and another monomer unit with opposite polarities, respectively, were investigated and the following results were obtained;
(1) The plots of Barus effects against the blended ratio showed two symmetrical maxima and the blended ratios at maxima did not change even if the comonomer contents and the melt indices of components changed. The Barus effects at maxima decreased with shear rate at constant L/D.
(2) The plots of the apparent shear viscosities against the blended composition suggested the tendency of the heterogeneous mixture, and the flow indices in power law changed slightly.
(3) The capillary end effects of blends showed larger values than the values of the components, and had positive correlations with the Barus effects.
(4) The mixed state could change complicatedly between homogeneous-, partially homogeneous-and heterogeneous-state, with the blended compositions which have influences on the intensities of the interactions between the different comonomers through the common ethylene units.抄録全体を表示PDF形式でダウンロード (406K) -
丹羽 雅子, 川端 季雄, 河合 弘迪1970 年 26 巻 10 号 p. 461-474
発行日: 1970/10/10
公開日: 2008/11/28
ジャーナル フリーPreviously, the shear deformation theory which covers general shear deformation composed with biaxial tensile and shearing in finite deformation, has been developed by the authors.
In this theory, the moment for rotating the intersecting angle between warp and weft yarns was characterized by five constants by following linear approximation formula.
As we have no theoretical knowlege about these constants at this stage, it is important to obtain these constants by experimental method.
In this paper, a method for obtaining these constants from yarn measurement is studied. Two yarns are crossovered with each other, and compressible force Fc is applied at the cross-over point, and the torque Tr required for changing the intersecting angle φ is measured as a function of φ and Fc.
Several kinds of samples are measured and it has been confirmed that the linear approximation formula is sufficient for practical calculations using the shear deformation theory.
In above formula, C1, C2 and Tr0 are the constants related to the yarn property which is concerned with some frictional effect on contact area of these yarns accompanied by the change of φ. C1 represents the pure frictional effect, but Tr0 and C2 have more complicated characteristics. The effect of mechanical entanglement of fibres in the contact area may be represented by Tr0 and C2.
On the other hand, C3 and C4 characterize the elastic behaviour. It was found that C2 takes very small value compared with the others and was negligible, and also found that the values of C3 and C4 measured from this direct method must be corrected for practical use.
Since these constants are obtained experimentally by this method as a yarn property, the mechanical behaviour of fabrics in general shear deformation state can be calculated theoretically.抄録全体を表示PDF形式でダウンロード (2421K) -
大江 秀雄, 松川 三郎, 松木 伸太郎, 高岸 和夫, 寺井 守, 黒田 治樹1970 年 26 巻 10 号 p. 475-479
発行日: 1970/10/10
公開日: 2008/11/28
ジャーナル フリーCellulosic fabrics (cotton, polynosic and spun rayon) were treated by the Poly-Set, two-step resin finishing process, using MMM, DMEU or their mixtures as finishing components and zinc acetate and zinc nitrate as polymerization (first step) and cross-linking (second step) catalysts, respectively.
The effect of each process on the dry and wet wrinkle recovery angles was investigated.
The alkali swelling of spun rayon was decreased most significantly by the resin finishing. DMEU was more effective than MMM to decrease the alkali swelling of the fabrics by the treatments.
The relationship of the amount of crystal regions and the dimension of crystallite to the restrictional tendency on alkali swelling behaviors is discussed.抄録全体を表示PDF形式でダウンロード (336K) -
伴 菊夫, 川上 達也1970 年 26 巻 10 号 p. 480-486
発行日: 1970/10/10
公開日: 2008/11/28
ジャーナル フリーThe pressure distribution along the arc between contacting rollers is one of the essential factors of mangling action. In this experiment, a rubber-covered driven roller 14cm in diameter and metal driving roller 16cm in diameter were used as a test apparatus. With a pressure transducer mounted radially in the metal roller, the pressure distribution was measured in a range of the surface speed of the roller between 4.38m/min and 24.31m/min.
The results obtained were as follows:
1. The pressure distribution along the arc of contact of the test mangle can be expressed by the formula: where f(x) is an normalized pressure distribution along the arc of contact and the coefficients a, b, c and d are the parameters of cubic expression calculated from the ratio between the measured and the Hertzian pressure distribution using the method of least squares.
2. As the surface speed of the metal driving roller is increased, the nip width is decreased and the maximum pressure is increased. Further, the pressure distribution is deformed as if the maximum point of pressure distribution moves to the opposite direction of rotation of mangling rollers.
3. The statical theory seems to be applicable to the mangling actions of the test apparatus within the range of nip width over 0.7cm, third order moment less than -0.3, and the maximum value of pressure distribution over 5kg/cm2.
As a result, the dynamical theory should be applied to mangling actions in the region out of the above mentioned.抄録全体を表示PDF形式でダウンロード (1543K) -
堀 照夫, 清水 融, 平野 忠男, 堀江 新1970 年 26 巻 10 号 p. 487-492
発行日: 1970/10/10
公開日: 2008/11/28
ジャーナル フリーDuring dyeing with Beam Dyeing Machine, the liquor is flowed through the fabric layer by the pump pressure. But, in this paper centrifugal force was used for the liquor flow. This new machine, Centrifugal Beam Dyeing Machine, has many characteristics as follow.
1) The circulating liquor is efficiently employed to rush in vertical direction to the cloth layer.
2) High rate of flow is stained with relative ease.
3) Liquor ratio can be kept small, for the reason the time to level dyeing is shorter.
4) Even if the mass of wound-up cloth is increased, the rate of flow doesn't decrease very much.
In this paper, the mechanism of flow and the mechanism of dyeing on usual Beam Dyeing Machine and Centrifugal Beam Dyeing machine are discussed.抄録全体を表示PDF形式でダウンロード (435K)
- |<
- <
- 1
- >
- >|