2005 Fiscal Year Final Research Report Summary
Fiber Structure Development of Polyester Fiber Analyzed by the Laser-heated Drawing
| Project/Area Number |
15550182
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Shinshu University |
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Principal Investigator |
OHKOSHI Yutaka Shinshu University, Textile Science & Technology, Associate Professor, 繊維学部, 助教授 (40185236)
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| Co-Investigator(Kenkyū-buntansha) |
NAGURA Masanobu Shinshu University, Textile Science & Technology, Professor, 繊維学部, 教授 (70021178)
GOTOH Yasuo Shinshu University, Textile Science & Technology, Assistant Professor, 繊維学部, 助手 (60262698)
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| Project Period (FY) |
2003 – 2005
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| Keywords | Laser Drawing / On-line Measurement / Fiber Structure Development / Diameter Profile / Temperature Profile / X-ray Diffraction / Elongational Viscosity / Energy Balance |
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| Research Abstract |
By drawing with heating the running synthetic fiber rapidly and uniformly with laser irradiation, the neck-drawing point can be fixed about the range of 0.1 mm without contact. In this study, we have succeeded to analyze the deformation behavior of fiber materials, energy balance on the drawing process, and fiber structure development mechanism in the drawing process by measuring fiber diameter profiles, fiber temperature profiles, and the x-ray diffraction patterns for the drawing process. The time-resolution was about 0.01 milliseconds for obtained diameter profiles, and was 0.6 milliseconds for temperature profiles and x-ray diffraction patterns. Not only poly(ethylene terephthalate) but also poly ethylene, poly propylene, PFA, and PA-9T were applied for the measurements. By the obtained diameter profiles,
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