On-line WAXD / SAXS Measurement for CO 2 Laser-Heated-Drawing of Poly(ethylene terephthalate) Fiber
On-line WAXD / SAXS Measurement for CO 2 Laser-Heated-Drawing of Poly(ethylene terephthalate) Fiber
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聚对苯二甲酸乙二醇酯纤维 CO 2 激光加热拉伸在线 WAXD / SAXS 测量
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
K. Kajiwara
中科院分区：
文献类型：
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作者：
T. Yamaguchi;Kohei Komoriyama;Y. Ohkoshi;H. Urakawa;Y. Gotoh;Norihisa Terasawa;Masanobu;Nagura;K. Kajiwara
采用高亮度x射线源和二氧化碳激光加热拉伸系统，通过在线测量广角和小角x射线散射，研究了聚对苯二甲酸乙酯纤维拉伸过程中纤维结构的发展。透射x射线强度分布图确定了拉颈点的位置。所获得的衍射图像具有几毫秒的时间分辨率，这仍然有很大的改进空间。缩颈后约20 ms，广角x射线图像中几乎瞬间出现晶体衍射，而四点SAXS图在缩颈后立即出现。随着缩颈后时间的推移，四点散射模式转变为经向两点散射模式。
: Fiber structure development in the poly(ethylene terephthalate) fiber drawing process was investigated by on-line measurement of wide-angle and small-angle x-ray scattering employing both a high-luminance x-ray source and a carbon dioxide laser-heated-drawing system. Intensity profile of transmitted x-ray confirmed the location of the neck-drawing point. Obtained diffraction images had a time-resolution of several milliseconds, which still leaves a great capacity for improvement. Crystal diffraction appeared in the wide-angle x-ray images almost instantaneously about 20 ms after necking, whereas a four-point SAXS pattern appeared immediately after necking. With the elapse of time after necking, the four-point scattering pattern changed to a meridional two-point shape.