巻号一覧
41 巻, 10 号
選択された号の論文の9件中1～9を表示しています
- |<
- <
- 1
- >
- >|
-
中村 邦雄, 畠山 立子1985 年 41 巻 10 号 p. P369-P378
発行日: 1985/10/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (764K) -
浦上 忠1985 年 41 巻 10 号 p. P379-P387
発行日: 1985/10/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (753K) -
広津 敏博1985 年 41 巻 10 号 p. P388-P393
発行日: 1985/10/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (466K) -
金井 俊孝1985 年 41 巻 10 号 p. T409-T417
発行日: 1985/10/10
公開日: 2008/11/28
ジャーナル フリーThe melt behavior of T-die extrusion between the die exit and the chill roll was predicted by using theoretical equations and numerical analysis under various process conditions.
As a result of the theoretical analysis, the take-up stress increased in a linear manner with viscosity, and the activation energy affected the velocity profile and take-up stress. The resins, of which the viscosity decreases with increasing elongational rate were deformed near the roll.
By use of dimensionless analysis, we found a scale-up rule that may set conditions which make the stress constant.抄録全体を表示PDF形式でダウンロード (596K) -
清水 融, 清水 和文, 足立 晏久, 堀 照夫1985 年 41 巻 10 号 p. T418-T423
発行日: 1985/10/10
公開日: 2008/11/28
ジャーナル フリーThe standard heat of sorption of dye on polymer can be estimated from the temperature dependence of the equilibrium dye sorption by means of vapor phase dyeing. However, for the cases that the significantly large amounts of dye are sorbed on the polymer, the accurate estimation can not be done, because the high sorption causes the irreversible structure change in polymer.
In this study, the “p-NA accessibility” was defined to know the extent of such irreversible structure change caused for the system of disperse dye - PET film. It was found that the PET films dyed below 85°C from the vapor phase had the same (constant) p-NA accessibility because of small amounts of dye sorption, while above 90°C p-NA accessibility increased with increasing the amount of dye sorption. It could be recognized that the p-NA accessibility was closely related to the polymer density, the intensity of small angle scattering of X-ray and so on, which could be also represented the structure change of polymer.
Furthermore, it was shown that the heat of sorption corrected with p-NA accessibility were agreed with those obtained for the regions, in which no structure change occurred.抄録全体を表示PDF形式でダウンロード (479K) -
斎藤 安史, 中嶋 伸子, 山本 雄三, 木下 茂武1985 年 41 巻 10 号 p. T424-T431
発行日: 1985/10/10
公開日: 2008/11/28
ジャーナル フリーネズミの尾の腱から取りだしたコラーゲン線維の熱収縮にともなう構造変化を, X線小角散乱法によって研究し,コラーゲン線維のトロポコラーゲンのレベルでの構造変化を示すモデルを提案した。コラーゲン線維に円筒対称パターソン関数を適用して,ギャップとオーバーラップ領域の交互の繰り返しからなるトロポコラーゲン分子の集合の構造の変化を調べ,巨視的な寸法変化と比較した。
200°C以上で熱処理したとき,ギャップ領域の長さは繰り返し単位の長さよりも急速に縮み,巨視的な寸法の急激な短縮をもたらし,ほぼ線維軸方向に向いていたコラーゲン分子はその配向を乱す。コラーゲンの構造変化に大きい影響をもつトロポコラーゲン分子間架橋密度は, 8.0M LiBrとHO(CH2CH2O)2CH3の等モル混合溶液で膨潤させた試料の平衡応力-伸長関係の測定から求めた。熱収縮および力学的延伸の機構への,コラーゲン線維の架橋の重要な役割が,微視的および巨視的な構造変化を考えるとき留意されるべきである。抄録全体を表示PDF形式でダウンロード (1306K) -
広瀬 重雄, 畠山 兵衛, 畠山 立子1985 年 41 巻 10 号 p. T432-T437
発行日: 1985/10/10
公開日: 2008/11/28
ジャーナル フリー4, 4′-Dihydroxy-3, 3′, 5, 5′-tetramethoxybiphenyl HMB) was prepared from 2, 6-dimethoxyphenol. Polyesterification of HMB with terephthaloyl, isophthaloyl and sebacoyl chloride were carried out by the low temperature solution polycondensation and the interfacial polycondensation. The polyterephthalate having inherent viscosity (ηinh) of 1.42 was obtained by the interfacial poly-condensation. The low temperature solution polycondensation using chloroform as a solvent gave the polyisophthalate having ηinh, of 0.73 and the polysebacate, ηinh of 0.43.
Thermal properties of the polyesters obtained were investigated by thermogravimetry (TG) and differential scanning calorimetry (DSC). The starting temperature of decomposition (Td) of each polymer was determined by TG. Td′s of the polyterephthalate, polyisophthalate and polysebacate were 341, 345 and 315°C respectively. The difference of thermal stability between the polyesters with methoxyl groups in biphenyl units and those without methoxyl groups was not prominent.
X-ray diffraction diagram of the polyterephthalate showed a crystalline pattern. However, no thermal transition such as melting were observed in the DSC of this polymer. X-ray diffraction diagrams of the polyisophthalate and polysebacate did not show any crystalline pattern. Glass transition temperatures of these polymers were observed at 252 and 94°C, respectively, in DSC measurements.抄録全体を表示PDF形式でダウンロード (417K) -
西松 豊典, 酒井 哲也1985 年 41 巻 10 号 p. T438-T447
発行日: 1985/10/10
公開日: 2008/11/28
ジャーナル フリーThe sensory test about softness, thickness, fullness, and smoothness of pile fabric was analyzed as a function of strength of physical stimuli. The function obtained is expressed in the following equation, which is a different type from Weber-Fechner's law.
logR=AS+B
where R=response, S=stimulus, and A and B=experimental constants.
From a set of sensory experiments conducted by a consumers group and a specialists group, it was found that there is a considerable difference in the recognizing behaviors of the consumers and of the specialists. The specialists generally take a time twice that for the consumers until reaching a decision. The fact suggests that the specialists behave more carefully on the sensory test. The specialists seem to have a relatively stable measure, when they compare a physical property of each sample with a given standard and make an order of strengths of the stimuli. It is of interest, however, that by a paired comparison, even a specialist is also much confused to order the strengths of stimuli as a usual consumer.
Using the intermediate differential and integral method, recognizing behaviors of specialists and of consumers were studied. Consumers seem to accept a physical stimulus directly, while specialists are likely to recognize a physical stimulus in a differentiated form. For instance, consumers estimate the thickness of fabric with the deformation of fabric itself generated by hand touching. And specialists tend to estimate the thickness by using an information about the deformation speed rather than the deformation value.抄録全体を表示PDF形式でダウンロード (631K) -
真下 智司, 中嶋 正仁, 山口 良雄, 芦田 道夫1985 年 41 巻 10 号 p. T448-T452
発行日: 1985/10/10
公開日: 2008/11/28
ジャーナル フリーThe change in strain of short fiber-rubber composites under repeated constant load was investi-gated. The short fibers in the composites were oriented to the uniaxial direction. The fatigue test of composites was carried out in the direction of fiber orientation under 25 Hz of frequency and 6±2, 8±4 and 10±2 MPa of sinusoidal load. The change in strain of composites under-fatigue test was characterized with two stages, i.e. the strain linearly increased with increasing cycles at the initial stage, and then the strain showed marked increase deviating from an extrapolated straight line at the higher cycles. It seems that the former was caused by the deformation of interfacial region between fiber and rubber, and the latter was taken place by the destruction of interfacial region. This change in strain was restrained by the RFL-treatment and high loading of short fibers. It was also found that under the dynamic fatigue of large displacement, the destruction of interfacial region occurred at the early stage, since the interfacial region was difficult to deform with the displacement of sinusoidal stress.抄録全体を表示PDF形式でダウンロード (343K)
- |<
- <
- 1
- >
- >|