{"title":"Evaluation Methods for Soil Resistance and Release of Textiles Regarding Hygiene from the Perspective of Relationship between Soil Grade, Color Difference and Weight of Adhered Soil Particles","authors":"Yasuko Takezaki, Akari Hasunuma, Hiroki Maru","doi":"10.4188/jte.69.51","DOIUrl":"https://doi.org/10.4188/jte.69.51","url":null,"abstract":"","PeriodicalId":35429,"journal":{"name":"Journal of Textile Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139350503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tensile Behavior of the Hardwood Fiber-Curdlan Resin Green Composite Produced via the Direct-Resinification Process","authors":"Yutaka Kawahara, Yingshao Chen, Masaki Yamamoto","doi":"10.4188/jte.69.59","DOIUrl":"https://doi.org/10.4188/jte.69.59","url":null,"abstract":"","PeriodicalId":35429,"journal":{"name":"Journal of Textile Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139350564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Some traditional Japanese fabrics, particularly those from Nishijin, Kyoto are woven from carbon fibers. When woven, the aligned carbon fibers show strong light reflection and generate a glitter effect depending on the weave structure. Seven traditional carbon fiber fabrics of different weaves were presented to 30 participants for a visual sensory evaluation of their stereoscopic effects. The contrast of lightness was related to the stereoscopic feeling of the participants, depending on the weave structure. The visual evaluation showed that three traditional Japanese weave designs "Sayagata Shamon," "Arrange Shamon," and "Chuya Shamon" had strong stereoscopic effects. In the case of Chuya Shamon, dark hollow spots appeared with a larger receiving angle. The light reflection was more obvious for Arrange Shamon. The participants could identify the differences in the height of the arch from the area of light and shadow. The strongest stereoscopic impression was perceived for the Sayagata Shamon sample. Thick and thin lines appeared under the light, emphasizing stereoscopic perception. The lightness values were measured by using a goniospectro-photometric system with a combination of illumination and viewing angles. Based on changes in lightness, viewing angles, and the contrast of shadow and shine, further stereoscopic designs can be created.
{"title":"Stereoscopic Perception of Carbon Fiber Woven Fabrics Using Traditional Japanese Textile Designs","authors":"Tomoko AWAZITANI, Sachiko SUKIGARA","doi":"10.4188/jte.69.33","DOIUrl":"https://doi.org/10.4188/jte.69.33","url":null,"abstract":"Some traditional Japanese fabrics, particularly those from Nishijin, Kyoto are woven from carbon fibers. When woven, the aligned carbon fibers show strong light reflection and generate a glitter effect depending on the weave structure. Seven traditional carbon fiber fabrics of different weaves were presented to 30 participants for a visual sensory evaluation of their stereoscopic effects. The contrast of lightness was related to the stereoscopic feeling of the participants, depending on the weave structure. The visual evaluation showed that three traditional Japanese weave designs \"Sayagata Shamon,\" \"Arrange Shamon,\" and \"Chuya Shamon\" had strong stereoscopic effects. In the case of Chuya Shamon, dark hollow spots appeared with a larger receiving angle. The light reflection was more obvious for Arrange Shamon. The participants could identify the differences in the height of the arch from the area of light and shadow. The strongest stereoscopic impression was perceived for the Sayagata Shamon sample. Thick and thin lines appeared under the light, emphasizing stereoscopic perception. The lightness values were measured by using a goniospectro-photometric system with a combination of illumination and viewing angles. Based on changes in lightness, viewing angles, and the contrast of shadow and shine, further stereoscopic designs can be created.","PeriodicalId":35429,"journal":{"name":"Journal of Textile Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135860854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Carbon Fiber Reinforced Thermoplastic (CFRTP) is drawing attention, currently in practical use, to shorten a manufacturing time and to reduce manufacturing cost. Though investigation for utilizing CFRTP is conducted flourishingly, the manufacturing method of CFRTP having enough performance has not been established yet. High viscosity of thermoplastic matrix disturbs good molding. The effective intermediate material is necessary. In this report, we used UD tape (SHINDO, TP CA143) that is slit from poly-amid film impregnated carbon fiber spread tow. We tried to produce CFRTP tube by using hot-press processing prepreg that is braided by these UD tapes. Braided prepreg consists of braiding yarns and axial yarns. Determination of the mechanical properties of a composite structure is essential to be applied in accordance with its requirements. We prepared three kinds of samples with different numbers of axial yarn and bending properties of CFRTP were determined by bending tests. Bending strength was proportional to the number of axial yarn and a small number of axial yarns showed ductile fracture, whereas a large number of axial yarns showed brittle fracture.
{"title":"組紐構造炭素繊維強化熱可塑性樹脂チューブの力学特性に及ぼす軸糸挿入本数の効果","authors":"Yasumasa TANIICHI, Taichi OCHIAI, Yudai FUJIOKA, Daichi TATSUNO, Takeshi YONEYAMA, Toshiyasu KINARI","doi":"10.4188/jte.69.43","DOIUrl":"https://doi.org/10.4188/jte.69.43","url":null,"abstract":"Carbon Fiber Reinforced Thermoplastic (CFRTP) is drawing attention, currently in practical use, to shorten a manufacturing time and to reduce manufacturing cost. Though investigation for utilizing CFRTP is conducted flourishingly, the manufacturing method of CFRTP having enough performance has not been established yet. High viscosity of thermoplastic matrix disturbs good molding. The effective intermediate material is necessary. In this report, we used UD tape (SHINDO, TP CA143) that is slit from poly-amid film impregnated carbon fiber spread tow. We tried to produce CFRTP tube by using hot-press processing prepreg that is braided by these UD tapes. Braided prepreg consists of braiding yarns and axial yarns. Determination of the mechanical properties of a composite structure is essential to be applied in accordance with its requirements. We prepared three kinds of samples with different numbers of axial yarn and bending properties of CFRTP were determined by bending tests. Bending strength was proportional to the number of axial yarn and a small number of axial yarns showed ductile fracture, whereas a large number of axial yarns showed brittle fracture.","PeriodicalId":35429,"journal":{"name":"Journal of Textile Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135860855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fiber-reinforced plastics (FRP) used in transportation equipment are required to have vibration damping performance in addition to strength and stiffness. In this study, we evaluated the vibration-damping behavior of FRPs that are made from three kinds of polyarylate-fibers (high strength type, conventional type), and aramid-fiber, which are expected to have excellent vibration-damping performance. In order to clarify the changes in vibration-damping performance and its mechanisms, we focused on the hysteresis loop obtained by the stress-strain curve under cyclic loading, and the change in dissipation energy and strain energy obtained from the hysteresis loop. The hysteresis loop characteristics under cyclic loading were compared for these three materials. Under high cyclic load, the damping ratio of polyarylate FRP (high strength type) was higher than that of other FRPs. It is considered that the specimens with delamination at low cycle loadings develop delamination at the intersection of the fiber bundle in the loading direction and the fiber bundle perpendicular to the loading direction as the number of cycles increases. At high cycle loadings, the specimens with delamination in the fiber bundle in the direction of the loading occurred as the number of cycles increased for polyarylate (high strength type) FRP and aramid FRP. Based on the observation of the fracture surface, it is considered that the delamination developed at the intersection and transverse cracks, which led to a decrease in the dissipation energy.
{"title":"ポリアリレート繊維を用いた織物複合材料の繰り返し荷重下における減衰特性の評価","authors":"Morio FUJIMOTO, Kazutaka MUKOYAMA, Tetsusei KURASHIKI, Yasumasa NAKANISHI, Seiya KURATA, Yoshifumi ASO, Kazumasa KUSUDO","doi":"10.4188/jte.69.17","DOIUrl":"https://doi.org/10.4188/jte.69.17","url":null,"abstract":"Fiber-reinforced plastics (FRP) used in transportation equipment are required to have vibration damping performance in addition to strength and stiffness. In this study, we evaluated the vibration-damping behavior of FRPs that are made from three kinds of polyarylate-fibers (high strength type, conventional type), and aramid-fiber, which are expected to have excellent vibration-damping performance. In order to clarify the changes in vibration-damping performance and its mechanisms, we focused on the hysteresis loop obtained by the stress-strain curve under cyclic loading, and the change in dissipation energy and strain energy obtained from the hysteresis loop. The hysteresis loop characteristics under cyclic loading were compared for these three materials. Under high cyclic load, the damping ratio of polyarylate FRP (high strength type) was higher than that of other FRPs. It is considered that the specimens with delamination at low cycle loadings develop delamination at the intersection of the fiber bundle in the loading direction and the fiber bundle perpendicular to the loading direction as the number of cycles increases. At high cycle loadings, the specimens with delamination in the fiber bundle in the direction of the loading occurred as the number of cycles increased for polyarylate (high strength type) FRP and aramid FRP. Based on the observation of the fracture surface, it is considered that the delamination developed at the intersection and transverse cracks, which led to a decrease in the dissipation energy.","PeriodicalId":35429,"journal":{"name":"Journal of Textile Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134998627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To reinforce the feather resin with Kevlar 29 fibers, the fibers were pretreated with the water-soluble protein derivatives prepared from the waterfowl feathers to cover the outer surface of the fibers. For this purpose, we used aluminum chloride hexahydrate for the pretreatment. When aluminum chloride hexahydrate is hydrolyzed in water, hydrochloric acid and aluminum hydroxide oligomer are generated. The former will work as an etching agent to form small pits or grooves on the fiber surface, and the latter will settle the protein derivatives on the fiber surface through chelate bonding. As a result, we succeeded in generating the insoluble stable coating on the Kevlar 29 fiber surface. This protein coating effectively reduced the photosensitivity of Kevlar 29 to the irradiation with ultraviolet (UV) rays, and fairly prevented the reduction in the tensile strength of the fibers. The photodegradation of Kevlar 29 fibers was found to proceed remarkably in the early stage of the irradiation with UV rays. It also changed the hue of the fibers. The feather resin reinforced with the protein-coated Kevlar 29 fibers exhibited an excellent sonic propagation speed, and a stress transfer coefficient resulted in 0.8 when the law of mixture was applied to the elastic modulus of the composite.
{"title":"ケブラー29 織物のUV 照射による劣化挙動と羽毛ケラチン加工によるUV 劣化抑制，及びケブラー29/ 羽毛樹脂複合材の界面接着性の改善","authors":"Yutaka KAWAHARA, Takeki OHNO, Yuki ITOI, Yuto TAKADA, Masaki YAMAMOTO, Hiroyuki WAKIZAKA, Yoshimitsu IKEDA","doi":"10.4188/jte.69.9","DOIUrl":"https://doi.org/10.4188/jte.69.9","url":null,"abstract":"To reinforce the feather resin with Kevlar 29 fibers, the fibers were pretreated with the water-soluble protein derivatives prepared from the waterfowl feathers to cover the outer surface of the fibers. For this purpose, we used aluminum chloride hexahydrate for the pretreatment. When aluminum chloride hexahydrate is hydrolyzed in water, hydrochloric acid and aluminum hydroxide oligomer are generated. The former will work as an etching agent to form small pits or grooves on the fiber surface, and the latter will settle the protein derivatives on the fiber surface through chelate bonding. As a result, we succeeded in generating the insoluble stable coating on the Kevlar 29 fiber surface. This protein coating effectively reduced the photosensitivity of Kevlar 29 to the irradiation with ultraviolet (UV) rays, and fairly prevented the reduction in the tensile strength of the fibers. The photodegradation of Kevlar 29 fibers was found to proceed remarkably in the early stage of the irradiation with UV rays. It also changed the hue of the fibers. The feather resin reinforced with the protein-coated Kevlar 29 fibers exhibited an excellent sonic propagation speed, and a stress transfer coefficient resulted in 0.8 when the law of mixture was applied to the elastic modulus of the composite.","PeriodicalId":35429,"journal":{"name":"Journal of Textile Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135683428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jianhua REN, Isao TABATA, Teruo HORI, Kazumasa HIROGAKI
This study presents a novel approach to improve the structure of polymeric nanofibrous aerogels by incorporating silica aerogel particles. Para-aramid nanofibers/polyvinyl alcohol (ANFs/PVA) constitute the skeleton of nanofibrous aerogels, and silica aerogel particles derived from methyltrimethoxysilane (MTMS) serve as structural fulcrums embedded in the skeleton of the aerogels. In order to gain an in-depth understanding of the ANFs/PVA/MTMS composite aerogels, we carefully compared them with MTMS aerogels, ANFs aerogels, and ANFs/PVA aerogels. The preparation process and appearance of above four aerogels were clearly demonstrated. Their macroscopic morphology, chemical composition, and porosity were characterized by field emission scanning electron microscope (FE-SEM), attenuated total reflectance-fourier transform infrared spectra (ATR-FTIR), and nitrogen physical adsorption, respectively. The results show that the silica aerogel particles are firmly embedded in the nanofibrous skeleton of aerogels, effectively resisting volume collapse during gelation and supercritical drying, preserving a finer appearance, and forming a stable ternary nanofibrous structure.
{"title":"A Novel Approach to Fabricate Polymeric Nanofibrous Aerogels with Embedded Silica Aerogel Particles","authors":"Jianhua REN, Isao TABATA, Teruo HORI, Kazumasa HIROGAKI","doi":"10.4188/jte.69.1","DOIUrl":"https://doi.org/10.4188/jte.69.1","url":null,"abstract":"This study presents a novel approach to improve the structure of polymeric nanofibrous aerogels by incorporating silica aerogel particles. Para-aramid nanofibers/polyvinyl alcohol (ANFs/PVA) constitute the skeleton of nanofibrous aerogels, and silica aerogel particles derived from methyltrimethoxysilane (MTMS) serve as structural fulcrums embedded in the skeleton of the aerogels. In order to gain an in-depth understanding of the ANFs/PVA/MTMS composite aerogels, we carefully compared them with MTMS aerogels, ANFs aerogels, and ANFs/PVA aerogels. The preparation process and appearance of above four aerogels were clearly demonstrated. Their macroscopic morphology, chemical composition, and porosity were characterized by field emission scanning electron microscope (FE-SEM), attenuated total reflectance-fourier transform infrared spectra (ATR-FTIR), and nitrogen physical adsorption, respectively. The results show that the silica aerogel particles are firmly embedded in the nanofibrous skeleton of aerogels, effectively resisting volume collapse during gelation and supercritical drying, preserving a finer appearance, and forming a stable ternary nanofibrous structure.","PeriodicalId":35429,"journal":{"name":"Journal of Textile Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135683429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mechanisms of Solid Particle Erosion Damage to Wind Turbine Blades (GFRP) Irradiated by Ultraviolet Rays","authors":"Toshihiro Mori, K. Wakatsuki, L. Bao","doi":"10.4188/jte.68.103","DOIUrl":"https://doi.org/10.4188/jte.68.103","url":null,"abstract":"","PeriodicalId":35429,"journal":{"name":"Journal of Textile Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86195965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation of Organic/Inorganic Composite Aerogel through Gelation and Supercritical Fluid Drying of Para-Aramid Fibril/Silicon Alkoxide Dispersion","authors":"Yuu Dougaki, I. Tabata, J. Ren, Kazumasa Hirogaki","doi":"10.4188/jte.68.121","DOIUrl":"https://doi.org/10.4188/jte.68.121","url":null,"abstract":"","PeriodicalId":35429,"journal":{"name":"Journal of Textile Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84953924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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