巻号一覧
44 巻, 10 号
選択された号の論文の14件中1～14を表示しています
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藤本 和士, 庵原 耕一, 大脇 新次, 村瀬 泰弘1988 年 44 巻 10 号 p. 477-482
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーThe effect of air drag on fiber structure formation in high-speed spinning of fine denier filaments of poly (ethylene terephthalate) has been investigated for take-up velocity up to 6, 000m/min. Air drag force increases with increasing the distance between spinneret and take-up roller without changing other spinning conditions. In the case of 1.5 denier/monofilament taken-up at 4, 000m/min, fiber structure changes from partial crystalline phase to amorphous one with increasing the distance, though spinning conditions such as through-put rate and cooling rate are not changed. This indicates that the air drag largely influences the fiber structure formation for the case of fine take-up denier. The exceeding increase of the air drag force causes a cold drawing between a solidification point and take-up roller. This cold drawing lower the fiber velocity at the solidification point. Consequently, crystals are not sufficiently developed below the solidification point.抄録全体を表示PDF形式でダウンロード (357K) -
小形 信男, 吉村 富巳雄, 柳川 昭明, 吉田 幸吉1988 年 44 巻 10 号 p. 483-489
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーThe morphology of poly (phenylene sulfide) (PPS) was investigated by transmission electron microscopy. It was found that the fastest growth direction of the crystal was b-axis. Small angle X-ray scattering showed that a drawn PPS sample had a long period along the draw direction. DSC measurements showed that PPS crystallized rapidly during annealing process, and that long annealing time was necessary in order to stabilize the crystal structure. From TMA measurements, it was found that PPS deforms markedly above the lower melting point Tm′.抄録全体を表示PDF形式でダウンロード (2121K) -
梶山 孝一, 鶴岡 多代子1988 年 44 巻 10 号 p. 490-496
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーGas chromatography of the mixtures of various 0-methyl- and O-ethylglucoses prepared from partially 0-methylated and O-ethylated celluloses respectively by acid hydrolysis was carried out on silicone OV-1, OV-7 and OV-17 columns by the linear temperature-programmed method after the mixtures being converted to alditol acetates. The correlation between the chemical structures and the retention indices was studied in detail by introducing a parameter, Δ based on an assumption of the additive contributions of each structural unit to the retention index. It was concluded that the intimate correlation between the chemical structures and retention indices became clearer by this method.抄録全体を表示PDF形式でダウンロード (519K) -
松川 三郎, 島 康子, 諸岡 晴美, 石原 ミキ1988 年 44 巻 10 号 p. 497-501
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーASTM型保温性試験機に改良を加え,湿潤しつつある織物の保温性の変化を調べようとした。そのため,織物の構造を変化させずに親水性化せしめたポリエステル織物が濡れたときに,組成繊維の親水性がその保温性にどのような影響を及ぼすかについて調べた。
親水性を附与されたポリエステル織物と無処理の織物を湿潤せしめ,それらの保温性の時間的変化を比べた結果,人体の皮膚と衣服との間の空間にある暖かい空気層は,織物を貫通した気孔(織糸間)が水で満たされているときにその気孔部を通して冷却されることが分った。抄録全体を表示PDF形式でダウンロード (756K) -
第1報 被服圧分布の動的測定清水 裕子, 戸塚 歌子, 清水 義雄1988 年 44 巻 10 号 p. 502-510
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーWe have developed a dynamic system which is designed to measure the clothing pressures distributed on the body. The dynamic system is to dynamically measure the clothing pressures on the body at multi-spotted sensors on a given part of the body. By using this system, we dynamically measured the distributions of the clothing pressures on the knee as well as on the hip during the period when the subject in basic slacks was performing some kinds of motions. The motions the subject was asked to repeat were: (1) bringing up and down a leg on a block, (2) stepping up and down on a block, (3) sitting on the chair and standing up, and (4) squatting and standing up.
As a result of this experiment, we obtained following findings.
(A) When the motion starts from a standing posture, the dynamic clothing pressures reach their peak before the motions finish. When the motion ends and the body comes to a still condition, the clothing pressures grow lower and indicate a constant value. But when the body starts moving again to return to the standing posture, the pressures once grow higher and go to zero value after reaching the peak.
(B) The clothing pressures varied from motion to motion. The maximum values of the clothing pressures came out in the following order: (4) squatting and standing up, (3) sitting on the chair and standing up, (2) stepping up and down a block, (1) bringing up and down a leg on a block. (1) and (2) show almost the same values. The pressures on the knee show much greater than those on the hip. This can be because these pressures depend on the degree of skin stretching motion and of its curvature.
(C) The pressures become greater when the hem of the slacks is taped around the ankle not prevent from shifting upward than in a natural condition.
(D) The pressures show different distribution patterns both on the knee and hip. As a general rule, the pressures on the inside of the upper part and the outside of the lower part of the knee show greater value than the other parts. When it comes to the hip, the lower part and the middle part of the hip indicate greater than the other parts.
(E) From all the findings listed above, it is clear that our dynamic system can serve effectively for measuring the clothing pressures in the dynamic method. Consequently, we assume that it would be helpful to apply this kind of dynamic system into the research of the clothing pressures.抄録全体を表示PDF形式でダウンロード (748K) -
新宅 救徳, 山本 孝, 喜成 年泰1988 年 44 巻 10 号 p. 511-516
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーA two-for-one twister has many advantages of high productivity and fast operation. However, it is said that the twister of this type imposes high tension on the filament twisted. We studied factors affecting tension during twisting by two-for-one twisters. The results are;
(1) Twisting tension T0 can be expressed by the following equation. gf/den where dm is the nominal denier, ε is the twist contraction, ω is the angular velocities of the spindle, b is the radius of the upper edge of conical spindle disk, and l/b is obtained from the relation among air-drag (K), linear density (m) and radius of spindle disk (b).
(2) Twisting tension increases in proportion to square of the revolution velocity of spindle.
(3) The yarn of large linear density is subjected to high twisting tension because of large l/b.
(4) When ε increases with the twist number, the yarn tension increases because of increase in linear density of the ballooned yarn.
(5) The storage disc automatically controls the taking off point of the yarn close to the upper edge of the disc.抄録全体を表示PDF形式でダウンロード (419K) -
林 貞男, 栗沢 知司, 平井 利博, 村山 守生1988 年 44 巻 10 号 p. 517-526
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーThe geometrical patterns formed by superposing the same two figures of dots arranged at points of intersection of square fretwork have been investigated by using a personal computer. The number of patterns became innumerable by changing a rotation angle between the two figures, and none of the patterns were the same. If the dots overlapped on the two dot figures are found by a rotation at an origin, the straight line that links the origin with the overlapped dots forms a side of a square fundamental unit of a pattern. Since the straight line bisects the rotation angle (θ), the relation between the θ and the overlapped dots is defined by an important equation, tan (θ/2)=m/n. If the integral number, which is indicated by a multiple of a dot pitch, is adopted for m and n, every pattern at the θ settled by the m and the n consists of a square fundamental unit of its own. The number of the patterns with the fundamental unit was found to be above 300 at the condition of m≤20 and n≤50. These patterns will be useful as printing patterns for cloths.抄録全体を表示PDF形式でダウンロード (983K) -
LADO BENISEK, 桜井 雅志1988 年 44 巻 10 号 p. P364-P368
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1181K) -
中村 良治, 堀 照夫1988 年 44 巻 10 号 p. P369-P373
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1981K) -
藤原 弘行1988 年 44 巻 10 号 p. P374-P378
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1182K) -
スケール剥離を中心とした北條 博史1988 年 44 巻 10 号 p. P379-P383
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (2334K) -
弓削 治1988 年 44 巻 10 号 p. P384-P388
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1042K) -
新井 淳一1988 年 44 巻 10 号 p. P389-P393
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (3410K) -
川島 成信1988 年 44 巻 10 号 p. P394-P397
発行日: 1988/10/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1230K)
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