Measurement of elongational viscosity for polymer melts by fiber spinning

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 987654321/71271

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题名:	Measurement of elongational viscosity for polymer melts by fiber spinning
作者:	Lin, Gwo-geng;Hu, Ming-chong
贡献者:	淡江大學化學工程與材料工程學系
日期:	1997-09
上传时间:	2013-05-30 15:24:53 (UTC+8)
出版者:	Hoboken: John Wiley & Sons, Inc.
摘要:	The elongation behavior of various polymer melts extruded from the single screw extruder has been studied. Low-density polyethylene, high-density polyethylene, polypropylene, and their short glass-fiber (GF)-filled composites were used. It was found that the spinning stability was good but the drawability was poor for GF-filled polymers. The elongation viscosity was measured by use of a Gottfert tensiometer (Rheotens) in the strain rate range from 0.1 to 4 s−1. In regard to the viscosity calculations, a very convenient and straightforward method, especially for molten materials without die swell, is presented. All the sample melts showed slight tension thinning; that is, the elongation viscosity decreased along with the strain rate. It was also found that the elongation viscosity of the GF-filled polymer may increase along with the fiber content up to a critical value, and then drop if more fiber is added. The influence of the die geometry on the viscosity measurement is discussed.
關聯:	Advances in Polymer Technology 16(3), pp.199-207
DOI:	10.1002/(SICI)1098-2329(199723)16:3<199::AID-ADV4>3.0.CO;2-O
显示于类别:	[化學工程與材料工程學系暨研究所] 期刊論文

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