繊維学会誌
Online ISSN : 1884-2259
Print ISSN : 0037-9875
検索
詳細検索
OR
閲覧
検索
64 巻, 7 号
選択された号の論文の12件中1～12を表示しています
すべての抄録を表示する
    • |<
    • <
    • 1
    • >
    • >|
時評
解説
連載
一般報文
  • 白布の紫外線防御効果への素材と織の影響 －透過率・反射率・空隙率およびUPFによる評価－
    佐々木 政子, 三島 栄治, 加賀見 悦成, 竹下 秀, 塩原 みゆき, 齊藤 昌子
    2008 年 64 巻 7 号 p. 163-170
    発行日: 2008/07/10
    公開日: 2008/08/10
    DOIhttps://doi.org/10.2115/fiber.64.163
    ジャーナル フリー
    抄録を表示する抄録を非表示にする
    The ultraviolet radiation (UV) protection efficiency of apparel white fabrics of cotton, nylon and polyester was investigated. The UV protection efficiency depended significantly on the transmittance of their polymer materials. For the cotton and polyester fabrics, the estimated UV protection efficiency showed a strong dependence on the weaving properties such as the type of weave, density of warp and weft, thickness, weight, fabric porosity and surface characteristics. Moreover, ultraviolet protection factor (UPF) of the white fabrics was evaluated for the UV-A and UV-B radiation. The results are summarized as follows: 1) The UV transmittance in the 250-400nm regions of white fabrics of cotton, nylon and polyester depends on that of their material polymers. 2) Polyester is defined as UV-B protective material, because it does not transmit wavelengths shorter than 310nm, and also the reflectance of polyester is lower than that of cotton and nylon in this wavelength regions. 3) The UV protection efficiency of white fabrics of cotton and polyester depends on their weaving properties, especially the type of weave such as plain and twill. 4) Polyester white fabrics with lower porosity than 5% have the higher UPF than 20. 5) The UPF is defined as a UV-B protection factor.
    抄録全体を表示
    PDF形式でダウンロード (3031K)
  • 断面が三角形の繊維1本による透過光の方向制御および偏光の分離機能
    戸谷 健朗, 林 秀樹, 林 秀樹, 渡辺 敏行
    2008 年 64 巻 7 号 p. 171-177
    発行日: 2008/07/10
    公開日: 2008/08/10
    DOIhttps://doi.org/10.2115/fiber.64.171
    ジャーナル フリー
    抄録を表示する抄録を非表示にする
    Control of light diffusion or direction of transmitted light were generated from polymer composites, consisting of single fiber and surrounded polymer matrix, using a fiber whose cross-section is triangle shape. Light diffusion property was drastically changed by following two ways, slight rotation of samples with respect to the direction of incident light, or little adjustment of refractive index of polymer matrix. If triangle fiber was used, spatial pattern of light diffusion was strongly dependent on incident light direction or refractive index ratio between fiber and polymer matrix, whereas, if circular fiber was used, they were relatively insensitive to incident light direction or refractive index ratio. In this research we also succeeded in polarization separation, by use of a monofilament birefringent fiber. The fabrication procedure was same except that fiber was birefringent. Since the light diffusion property was drastically influenced by the shift of refractive index, spatial patterns of light diffusion were quite different between two polarized light (axis of electric field are vertical each other) in birefringent fiber, thus polarized light was separated to different directions. In our samples, we could separate more than 95% of polarized light into two different directions.
    抄録全体を表示
    PDF形式でダウンロード (1313K)
  • セルロース誘導体を配向膜に用いた液晶素子の電気光学応答
    笠嶋 康史, 加藤 隆史, 久保野 敦史, 田坂 茂, 秋山 隆一
    2008 年 64 巻 7 号 p. 178-180
    発行日: 2008/07/10
    公開日: 2008/08/10
    DOIhttps://doi.org/10.2115/fiber.64.178
    ジャーナル フリー
    抄録を表示する抄録を非表示にする
    Low voltage operation and fast response of liquid crystal displays (LCDs) can be achieved by using a hybrid twisted nematic (HTN) cell, which is fabricated by applying the conventional twisted nematic (TN) cell. Unfortunately, the devices exhibit a narrow viewing-angle in the same order as that of TN. It has been reported that an alignment layer made of hydroxyl propyl cellulose (HPC) results in specific orientation; the director of the LC can be parallel to the substrate surface and random in the plane without any defects. The HTN cells with HPC as an alignment layer afford wide-viewing-angle as well as low voltage operation and fast electro-optical response.
    抄録全体を表示
    PDF形式でダウンロード (631K)
  • ヒーター加熱とレーザー照射加熱の併用によるポリL乳酸 / ε-カプロラクトン共重合体モノフィラメントの延伸
    伊香賀 敏文, 遠藤 雅紀, 黒田 幸司, 大越 豊, 後藤 康夫, 奈倉 正宣, 鴻野 勝正, 中井 浩一
    2008 年 64 巻 7 号 p. 181-186
    発行日: 2008/07/10
    公開日: 2008/08/10
    DOIhttps://doi.org/10.2115/fiber.64.181
    ジャーナル フリー
    抄録を表示する抄録を非表示にする
    Poly (L-lactide-co-ε-caprolactone) monofilament was drawn with three ways of heating methods, those are air heater heating, CO2 laser irradiation, and laser irradiation after heater pre-heating. The mechanical properties and diameter deviation of the drawn filaments were analyzed. The lowest drawing stress and the least diameter deviation were obtained for the heating of laser irradiation after heater pre-heating. Moreover, only by the heating of laser irradiation after heater pre-heating, the drawing point could be fixed even for draw ratio of 4. And after the 3-step drawing, the filament which have the maximum strength of 651MPa was obtained by the heating method.
    抄録全体を表示
    PDF形式でダウンロード (1286K)
  • オフセット印刷インキモデル系として用いた疎水性高分子基質中の水の運動性評価
    岩田 和憲, 黒木 重樹, 佐藤 満
    2008 年 64 巻 7 号 p. 187-198
    発行日: 2008/07/10
    公開日: 2008/08/10
    DOIhttps://doi.org/10.2115/fiber.64.187
    ジャーナル フリー
    抄録を表示する抄録を非表示にする
    As a fundamental research for elucidation of effects of "dampening water", which is added during the usual offset printing, on the printing performance, 1H-PFGStE NMR and T2 measurements were carried out to investigate the mobility of water in model ink systems consisting of a phenol resin and oil components. Only for crosslinked systems with an aluminum chelate or abietic acid, some of the water showed a "restricted diffusion", meaning that the water is distributed in a limited region of some micron size in the polymer matrix and the water movement is confined within the region.
    抄録全体を表示
    PDF形式でダウンロード (8186K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top