巻号一覧
29 巻, 2 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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辻本 石雄, 高橋 利禎, 渡辺 孝寛, 寺岡 文雄1973 年 29 巻 2 号 p. T31-T37
発行日: 1973/02/10
公開日: 2008/11/28
ジャーナル フリーThe low temperature crystallization of polyethylene terephthalate (PET) under the ultrasonic irradiation was studied by the density gradient tube method, DSC and X-ray technique, and the crystallization behavior was compared with that of PET on annealing. The results obtained are as follows:
1. The influence of ultrasonic irradiation on crystallization rate depended on the temperature. Ultrasonic irradiation accelerated the crystallization of PET at temperatures of about 80°C to 125°C. This crystallization behavior of PET can be described in terms of the rate of segmental motion. Long segment moves easily in the ultrasonic field, as the potential barrier to rotation of bonds is lowerd. Additional X-ray and DSC data also support the above result.
2. The value of the Avrami exponent n, for the crystallization of PET under the ultrasonic irradiation at 100°C-102.5°C was 2.9-3.1 and n for the crystallization of PET on annealing at 105°C-110°C was 1.8-2.3.
3. In the similar manner, ultrasonic irradiation accelerated the solid-state crystallization of oriented amorphous PET.抄録全体を表示PDF形式でダウンロード (1404K) -
村井 美宏, 黒田 亘哉1973 年 29 巻 2 号 p. T38-T44
発行日: 1973/02/10
公開日: 2008/11/28
ジャーナル フリーAn apparatus for the dynamic viscoelastic measurement of polymer film in solution was devised. Using this apparatus the changes in dynamic viscoelastic properties for polyethylene terephthalate (PET) film during the sorption process of phenol were measured, and the results were analyzed according to the considerations of sorption process explained in the previous paper1).
The results obtained were as follows:
1) The results of temperature dispersion measurements in this system were explained satisfactorily by the multi-phases parallel model. The fitness of this model for this system was confirmed by these results.
2) The relations between elastic modulus (EA) and concentration of small molecules absorbed (C) are linear in the low concentration of solution, and convex toward the both axes of EA and C in the high concentration of solution during the sorption process of this system.
3) Decrease velocity of elastic modulus for PET in sorption process of this system depends rather on the diffusion velocity of phenol than on the reaction velocity of phenol with PET.抄録全体を表示PDF形式でダウンロード (509K) -
清造 剛, 平佐 一郎1973 年 29 巻 2 号 p. T45-T49
発行日: 1973/02/10
公開日: 2008/11/28
ジャーナル フリーNylon 6 wet spinning fibers prepared by using phenol (Ph) or formic acid (FA) as solvent were heat-treated for 10-120min. or drawn 2-4times in air at 150°C or in water at 65°C. And the effect of heat-treatment or drawing on size and content of voids is studied in relation to dye and water absorption behaviors.
Data obtained are summerized in the following table. _??_; increase, _??_; decrease, h. t.; heat-treating, d.; drawing抄録全体を表示PDF形式でダウンロード (387K) -
鈴木 淳, 新海 克彦, 大平 通泰1973 年 29 巻 2 号 p. T50-T56
発行日: 1973/02/10
公開日: 2008/11/28
ジャーナル フリーSo-called sticky feeling is an important factor of uncomfortable feeling under perspiration.
There are some old papers about the phenomenon of stickiness.
In this study, the phenomenon of stickiness was simulated physically by sliding resistance in the interface between a polypropylene film and a wet fabric.
The cause of sliding resistance and the effects of a fabric on it are discussed and the following results were obtained:
(1) Sliding resistance is a function of water content and has a maximum value.
(2) Sliding resistance is influenced to the nature of a fabric-material (wettability or unwettability) and the structures of fabric (thickness, size and density of a texture).
(3) Sliding resistance is caused by interfacial tension of water which works at a unit of texture.抄録全体を表示PDF形式でダウンロード (527K) -
赤見 仁, 川上 達也1973 年 29 巻 2 号 p. T57-T69
発行日: 1973/02/10
公開日: 2008/11/28
ジャーナル フリーIn this report, an analysis of breakage effect of cylinder type- and beater-type machines, which are used in breakage of cotton tufts, was performed by a digital simulation.
As cylinder type machine, double Crighton Opener and Superio Cleaner, and also as beater type machine, Double Scutcher were used.
On cylinder type machine, the size distribution obtained experimentally agreed with that obtained by the simulation which was made under the assumption that the ratio of a tuft affected by breakage action is propotional to its weight (called size) and the break part was distributed uniformly on tuft.
Superio Cleaner
It was considered from size distributions by experiment and simulation that breakage of tuft in Superio cleaner is saturated at break stage of S-4 or S-3. Good results were obtained when a by-pass effect that only the tufts with the sizes larger than the max-size estimated from size distribution are broken was introduced into the simulaton model of Superio Cleaner.
Crighton Opener
A difference of simulation model between Superio Cleaner and Crighton Opener concerned with the transfer of tuft in the breakage zone and it was supposed in the simulation model that transfer condition of a tuft passing through the breakage zone was propotional to the size.
Then, using the transfer condition weighed by a factor decided from the relation between max. length of tuft and size, good results were obtained.
In the simulation model of beater type machine, it was assumed in beating zone of Scutcher that the size distribution of tufts cut by beater is exponential and the distance from the beating point to the nip point of a tuft (effective beater guage) was about 30-45mm.
The size distributions of the simulaton of beater type machine agreed with experimental results under the above assumptions and the relation between size of a tuft and its max. length.
As input data to these simulation models, the size distributions obtained experimentally were used.抄録全体を表示PDF形式でダウンロード (752K) -
平見 松夫, 谷村 暉1973 年 29 巻 2 号 p. P69-P78
発行日: 1973/02/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1365K) -
羽賀 敏雄, 石橋 博1973 年 29 巻 2 号 p. T70-T77
発行日: 1973/02/10
公開日: 2008/11/28
ジャーナル フリーIn order to obtain fundamental data of solvent dyeing and finishing, the interactions between nylon 6 fiber and several organic solvents are discussed in relation to Tg and swelling behavior of nylon 6 fiber in solvents in comparison with the case of water. Organic solvents used are methanol, ethanol, 1-propanol, trichloroethylene and tetrachloroethylene. The results obtained are as follows:
(1) Tg of nylon 6 fiber in solvents is lowered in the following order; methanol, ethanol, water, 1-propanol, trichloroethylene, and tetrachloroethylene.
(2) The relation of diffusion coefficients and activiation energy of diffusion of organic solvents to their molecular volume showed that chlorinated hydrocarbons have larger diffusion coefficients and smaller activation energy of diffusion than these of alcohols when compared at given molecular volumes. These phenomena could be explained by the affinity of solvents to nylon 6 fiber.
(3) The depression of Tg of nylon 6 fiber in solvents including water was interpreted by the hydrogen bonding ability, affinity and steric factor of the solvent.抄録全体を表示PDF形式でダウンロード (627K) -
北丸 竜三1973 年 29 巻 2 号 p. P79-P84
発行日: 1973/02/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1107K) -
西田 健三, 峯川 啓1973 年 29 巻 2 号 p. P85-P90
発行日: 1973/02/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (473K) -
正井 敬人1973 年 29 巻 2 号 p. P91-P93
発行日: 1973/02/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (231K)
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