巻号一覧
42 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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金井 俊孝, 船木 章1986 年 42 巻 1 号 p. T1-T10
発行日: 1986/01/10
公開日: 2008/11/28
ジャーナル フリーIn achieving the high productivity or producing the thin film on the T-die extrusion, processability which includes instability and film failure is often a big problem. Processability was discussed by using the theoretical analysis previously reported.
Instability was evaluated by dimensionless deformation rate which was suggested by Toriumi, and film failure was estimated by maximum stretching stress at the roll touch. Cooling air blowed off from an air knife which much influences processability made dimensionless deformation rate smaller, and it made stability better. As a result of the experiment in the various resins and process conditions, it was found that processability was dependent on dimensionless deformation rate and draw down ratio. Film failure was mainly influenced by maximum stretching stress.抄録全体を表示PDF形式でダウンロード (613K) -
宇野 收1986 年 42 巻 1 号 p. P3-P8
発行日: 1986/01/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1290K) -
小高 忠男1986 年 42 巻 1 号 p. P9-P14
発行日: 1986/01/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (448K) -
安田 武, 奥野 温子, 吉田 恭子1986 年 42 巻 1 号 p. T11-T17
発行日: 1986/01/10
公開日: 2008/11/28
ジャーナル フリーThe equipment used for the plasma treatment of poly(ethylene terephthalate) fiber was a capacitively coupled flow system supplied by a 13.56MHz power source. The volume of this reactor was 2035ml, and experiments were carried out at pressures ranging from 1.0 to 2.0 Torr in an air plasma. The alkali treatment was performed with 30% NaOH aqueous solution at 50°C.
It was possible to produce samples with the same weight loss by choosing suitable conditions for each method. Comparing the samples with the same weight loss prepared by both methods, the plasma treated fabric was thicker, stiffer and stronger than that treated by the alkali solution. When samples treated by the different methods had the same stiffness, the thickness and tensile strength were also the same. The surface morphology observed by SEM was too rough with alkali treatment, and the gloss disappeared. On the other hand, the plasma-treated surface was almost as smooth and glossy as the untreated sample. The wettability was remarkably improved by air plasma even for short treatment time. From the ESCA measurements, the improved wettability is considered to be due to the increase of oxygen content of the fabric surface.
Finally, it is clear that the air-plasma treatment is an alternative good method to the alkali process for improving the quality of the PET fabrics. In addition, the plasma treatment did not deteriorate the appearance of the fabric as did the alkali process.抄録全体を表示PDF形式でダウンロード (1005K) -
伊藤 泰輔, 勢田 二郎1986 年 42 巻 1 号 p. P15-P24
発行日: 1986/01/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (750K) -
石井 穆1986 年 42 巻 1 号 p. T18-T24
発行日: 1986/01/10
公開日: 2008/11/28
ジャーナル フリーシノン繊維にミクロボイドを導入するために,シノン織物をプロナーゼP.パパインC-400,プロテオリクイファーゼで処理した。処理により,シノンの平衡吸湿量は85%RH以下では減少したが, 90%RH以上では顕著に増加した。水に浸漬した処理シノン織物を遠心脱水した時の水分量は,高湿度下での平衡吸湿量に相当する値を示した。これは,酵素処理したシノン繊維中のミクロボイドへのキャピラリー効果による保水量が,高湿度下での異常に大きい吸湿量に対応したことを示唆している。90%RH以上では,処理シノンは,羊毛,絹,綿などの天然繊維に匹敵する吸湿量を示した。処理シノン織物表面への吸水性は,使用した酵素の種類によって異なり,ミクロボイドの容量には依存しなかった。抄録全体を表示PDF形式でダウンロード (419K) -
宮本 武明1986 年 42 巻 1 号 p. P25-P30
発行日: 1986/01/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (497K) -
Sh. Aggour, A. Bendak1986 年 42 巻 1 号 p. T25-T30
発行日: 1986/01/10
公開日: 2008/11/28
ジャーナル フリー酢酸セルロース織物の低温染色において,水/メタノール,水/n-プロパノール混合媒体を用い,染色物の色濃度(K/S値)および染色速度に及ぼす第一アルコール類の影響を調べた。
染色媒体の誘電率(D)の増大と共に色濃度が増大した。色濃度は水媒体よりも水/メタノール(3:1)媒体で増大し,水/n-プロパノール(9:1)媒体ではさらに増大した。
酢酸セルロース織物の水媒体からの染色では,用いた分散染料の双極子モーメントの増大と共に半染時間(t1/2)および比染色速度定数(k)が増大した。水媒体中にn-プロパノールをわずかに加えると,染色温度を上げた場合と同様にt1/2およびkの値が減少した。染色の親和力および染色熱は用いた分散染料の双極子モーメントと関係がある。すなわち,水媒体中にn-プロパノールを加えた場合および染料の双極子モーメントが減少すると,親和力が増大した。一方,染色熱はn-プロパノールを加えると減少し,染料の双極子モーメントの増大と共に増大した。染色媒体中に脂肪族アルコール類を加えると,酢酸セルロースの微細構造が無秩序になるためとしてこれらの現象を説明した。抄録全体を表示PDF形式でダウンロード (371K) -
鈴木 洋正, 石井 美治, 山下 雄也1986 年 42 巻 1 号 p. T31-T38
発行日: 1986/01/10
公開日: 2008/11/28
ジャーナル フリーThe photofading of Acridine Orange N in a dioxane-ethanol mixture has studied in the presence of polymers having ultraviolet absorptive groups. The results were compared with the measurements made in the presence of the coresponding ultraviolet absorptive molecules. The polymers used were: CMPT prepared by the reaction of 32.4% chloromethylated polystyrene (CMPSt), with 2-(2′, 4′-dihydroxyphenyl) benzotriazole, and CMPB prepared by the reaction of CMPSt with 2, 4-dihydroxybenzophenone. CMPT contained 4.5% 2-(2′-hydroxyphenyl) benzotriazole (HBT) unit and 27.9% chloromethylstyrene (CMSt) unit and the rest 67.6% styrene (St) unit. CMPB contained 5.1% 2-hydroxybenzophenone (HBP) unit, 27.3% CMSt and the rest % St unit. The corresponding molecules used were 2-(2′-hydroxy-4′-methoxyphenyl)benzotriazol (HMBT) and 2-hydroxy-4-methoxybenzophe none (HMBP).
In the case of irradiation with light of overall wavelengths under Xenon-arc lamp, CMPT and CMPB did not act as retarder for the photofading of Acridine Orange N in the solution, CMSt unit in these polymers underwent photochemical solvolysis in the solution to afford free HCl, which showed an accelerating action on the photofading rate of the dye. On the other hand, in the case of irradiation with light above 290nm, to which CMSt is insensitive, the effects of CMPT and CMPB were similar to HMBT and HMBP; these worked as retarder on the photofading in the order: CMPT>HMBT>CMPB>HMBP.
HBT and HBP groups acted as both quencher and screener. The quenching effect was dominant under the low concentration of these additives, and the screening effect predominated under the high concentration of the additives.抄録全体を表示PDF形式でダウンロード (590K) -
新宅 救徳, 岩木 信男, 喜成 年泰1986 年 42 巻 1 号 p. T39-T46
発行日: 1986/01/10
公開日: 2008/11/28
ジャーナル フリーIn a doubler twisting process, it is a recent tendency to enlarge the yarn package and increase the rotating speed of the pirn. At the same time, the energy cost becomes a major part in the manufacturing cost of yarn. Therefore, it is important problem to save energy consumed in the operation process. In order to improve the efficiency in saving energy, we have investigated the relationship between the power and the diameter of the pirn, and the following results are obtained.
(1) The power to rotate the pirn consists of the force of stirring the air around the pirn and the tension of taking up the yarn. As the radius of the pirn was enlarged from 26mm to 66mm, the power to stir the air increased three times. On the other band, the power taking up the yarn slightly increased with increasing the pirn radius, although the power was almost occupied by the yarn take-up, when the pirn radius was 26mm.
(2) The coefficient of friction between the rotating pirn and the air was 0.0048_??_0.0055.
(3) The coefficient of friction between the traveller and the ring was about 0.11.
(4) When the ring was downward, both the spinning tension and the taking up torgue increased. Therefore, it was confirmed that the energy could be saved by decreasing the distance between the taking up position and guide eye.抄録全体を表示PDF形式でダウンロード (499K)
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