Pub Date : 2002-08-25DOI: 10.4188/TRANSJTMSJ.55.8_T82
S. Katori, Teruo Kimura
Recently attention has been given to shift from glass fiber and carbon fiber to natural fibers as reinforcement for FRP composites with the goal of protect of the environment. This paper concerned with the application of raw silk fiber to reinforcement for composite material. In this study, polypropylene (PP) resin was used for the matrix material and the composites were molded using the injection-molding method. Maleic anhydride grafted polypropylene (MAPP) was also used as the binder resin.Mechanical properties of Silk/PP composites were discussed and compared with standard glass fiber reinforced plastics (GFRP). Furthermore, detailed SEM observation of the cross-section of each molded composite was carried out . As a result, the tensile strength and elastic modulus were found to increase with increasing silk fiber content. In particular, the Izod impact value for the Silk/PP composite was the same as that of GFRP. Moreover, good adhesion between the silk fiber and matrix material was achieved through use of MAPP due to the good reaction between MAPP and the hydroxy groups and amino groups of the silk fiber. However, the dispersion of raw silk fiber was relatively poor in comparison with that of glass fiber in the molded composites.
{"title":"Mechanical Properties of Injection Molde Silk Fiber/Polypropylene Composites","authors":"S. Katori, Teruo Kimura","doi":"10.4188/TRANSJTMSJ.55.8_T82","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.55.8_T82","url":null,"abstract":"Recently attention has been given to shift from glass fiber and carbon fiber to natural fibers as reinforcement for FRP composites with the goal of protect of the environment. This paper concerned with the application of raw silk fiber to reinforcement for composite material. In this study, polypropylene (PP) resin was used for the matrix material and the composites were molded using the injection-molding method. Maleic anhydride grafted polypropylene (MAPP) was also used as the binder resin.Mechanical properties of Silk/PP composites were discussed and compared with standard glass fiber reinforced plastics (GFRP). Furthermore, detailed SEM observation of the cross-section of each molded composite was carried out . As a result, the tensile strength and elastic modulus were found to increase with increasing silk fiber content. In particular, the Izod impact value for the Silk/PP composite was the same as that of GFRP. Moreover, good adhesion between the silk fiber and matrix material was achieved through use of MAPP due to the good reaction between MAPP and the hydroxy groups and amino groups of the silk fiber. However, the dispersion of raw silk fiber was relatively poor in comparison with that of glass fiber in the molded composites.","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123311457","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}
Pub Date : 2002-08-25DOI: 10.4188/TRANSJTMSJ.55.8_T73
Ryuji Shintani, A. Okajima
Saving of energy and expansion of versatility are very important technical subjects for air jet looms (AJL) using profile reeds with sub-nozzle systems. Optimum weft-insertion conditions must be determined for each kind of weft yarn on the basis of the relationship between the airflow in the weft passage and the weft flight behavior. The relationship between weft-insertion conditions and weftinsertion speed of polyester textured yarns was experimentally examined by measurement of the weft tension using a benchmark-testing machine.On the other hand, the weft-insertion speed in AJL was numerically calculated under the consideration that it is a function of the air velocity in the weft-yarn flight path. In the computations, the velocity distribution issued from a circular jet was applied to the equations of the weft motion in the air jet loom as the velocity distribution of the weft passage.From the results, the maximum weft tension increased linearly with an increase in the weftinsertion speed, and also the rate of increase in the weft tension was dependent on the yarn count. Furthermore, of all the weft-insertion conditions, which include the supply air pressure and air injection timing for the main nozzle and sub-nozzles, the main nozzle air pressure most strongly affected the weft-insertion speed. The computational results of weft-insertion speed were in good agreement with experiments using a 16.5 tex/96 f yarn, it was, therefore, confirmed that the present method of numerical computation for the motion of AJL weft-yarn was suitable.
{"title":"Weft-Insertion Speed of Polyester Textured Yarns in Air Jet Loom","authors":"Ryuji Shintani, A. Okajima","doi":"10.4188/TRANSJTMSJ.55.8_T73","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.55.8_T73","url":null,"abstract":"Saving of energy and expansion of versatility are very important technical subjects for air jet looms (AJL) using profile reeds with sub-nozzle systems. Optimum weft-insertion conditions must be determined for each kind of weft yarn on the basis of the relationship between the airflow in the weft passage and the weft flight behavior. The relationship between weft-insertion conditions and weftinsertion speed of polyester textured yarns was experimentally examined by measurement of the weft tension using a benchmark-testing machine.On the other hand, the weft-insertion speed in AJL was numerically calculated under the consideration that it is a function of the air velocity in the weft-yarn flight path. In the computations, the velocity distribution issued from a circular jet was applied to the equations of the weft motion in the air jet loom as the velocity distribution of the weft passage.From the results, the maximum weft tension increased linearly with an increase in the weftinsertion speed, and also the rate of increase in the weft tension was dependent on the yarn count. Furthermore, of all the weft-insertion conditions, which include the supply air pressure and air injection timing for the main nozzle and sub-nozzles, the main nozzle air pressure most strongly affected the weft-insertion speed. The computational results of weft-insertion speed were in good agreement with experiments using a 16.5 tex/96 f yarn, it was, therefore, confirmed that the present method of numerical computation for the motion of AJL weft-yarn was suitable.","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127310227","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}
Pub Date : 2002-07-25DOI: 10.4188/TRANSJTMSJ.55.7_P292
Sonoko Ishimaru
{"title":"Development of Comfortable Wear, Micro-Climate within Clothing","authors":"Sonoko Ishimaru","doi":"10.4188/TRANSJTMSJ.55.7_P292","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.55.7_P292","url":null,"abstract":"","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128170784","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}
Pub Date : 2002-07-25DOI: 10.4188/TRANSJTMSJ.55.7_P277
M. Kawamoto
{"title":"Development Philosophy based on Fine Particles Technology","authors":"M. Kawamoto","doi":"10.4188/TRANSJTMSJ.55.7_P277","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.55.7_P277","url":null,"abstract":"","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"254 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133004097","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}
Pub Date : 2002-07-25DOI: 10.4188/TRANSJTMSJ.55.7_P287
K. Iwashita
{"title":"Development of Wool-like Fabrics","authors":"K. Iwashita","doi":"10.4188/TRANSJTMSJ.55.7_P287","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.55.7_P287","url":null,"abstract":"","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123758225","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}
Pub Date : 2002-07-25DOI: 10.4188/TRANSJTMSJ.55.7_P273
T. Imamura
{"title":"The thought of Development Based on Bi-component Spinning Technology","authors":"T. Imamura","doi":"10.4188/TRANSJTMSJ.55.7_P273","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.55.7_P273","url":null,"abstract":"","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121955434","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}
Pub Date : 2002-07-25DOI: 10.4188/TRANSJTMSJ.55.7_P270
S. Honda
{"title":"Technology of Hi-Component Spinning","authors":"S. Honda","doi":"10.4188/TRANSJTMSJ.55.7_P270","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.55.7_P270","url":null,"abstract":"","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132387770","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}
Pub Date : 2002-06-25DOI: 10.4188/TRANSJTMSJ.55.6_P237
Yuki Mouri
{"title":"A New Phase of the Kimono Fashion in the 21st Century","authors":"Yuki Mouri","doi":"10.4188/TRANSJTMSJ.55.6_P237","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.55.6_P237","url":null,"abstract":"","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124805554","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}
Pub Date : 2002-06-25DOI: 10.4188/TRANSJTMSJ.55.6_T59
Ryuji Sintani, A. Okajima
The correspondence to consumer needs and the development of high value added products are required for the textile manufactures. The textile manufacture is obliged to shift to a large variety and small quantity of production. The improvement in efficiency of warp preparation and a quick determination of weaving conditions (air pressure and injection timing) is important to the air jet loom (AJL). In order to obtain basic data for determining quickly the weaving conditions in AJL of the profile reed with sub-nozzles, the air-drag coefficient of eight kinds of polyester textured multi-filament yarn was measured, and the factors which affect the air-drag coefficient of yarn were investigated. The following conclusions were obtained as a result. (1) The air-drag of polyester textured yarns which are 16.5 tex and 33.9 tex with 96 filaments became the largest. (2) Measuring the diameter of polyester textured yarn used in the experiment, the diameter changes with the static loads and approaches to about 1.8 times as long as the equivalent diameter calculated from yarn count. (3) The air-drag coefficient of polyester textured yarns used in the experiment is explained as a function of a Reynolds number.
{"title":"Air-Drag Coefficient of Polyester Textured Yarns","authors":"Ryuji Sintani, A. Okajima","doi":"10.4188/TRANSJTMSJ.55.6_T59","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.55.6_T59","url":null,"abstract":"The correspondence to consumer needs and the development of high value added products are required for the textile manufactures. The textile manufacture is obliged to shift to a large variety and small quantity of production. The improvement in efficiency of warp preparation and a quick determination of weaving conditions (air pressure and injection timing) is important to the air jet loom (AJL). In order to obtain basic data for determining quickly the weaving conditions in AJL of the profile reed with sub-nozzles, the air-drag coefficient of eight kinds of polyester textured multi-filament yarn was measured, and the factors which affect the air-drag coefficient of yarn were investigated. The following conclusions were obtained as a result. (1) The air-drag of polyester textured yarns which are 16.5 tex and 33.9 tex with 96 filaments became the largest. (2) Measuring the diameter of polyester textured yarn used in the experiment, the diameter changes with the static loads and approaches to about 1.8 times as long as the equivalent diameter calculated from yarn count. (3) The air-drag coefficient of polyester textured yarns used in the experiment is explained as a function of a Reynolds number.","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121882948","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}
Pub Date : 2002-06-25DOI: 10.4188/TRANSJTMSJ.55.6_P219
K. Emi
{"title":"A Good Product is Expensive","authors":"K. Emi","doi":"10.4188/TRANSJTMSJ.55.6_P219","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.55.6_P219","url":null,"abstract":"","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132967897","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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