A novel capillary rheometer for measurement of flow properties of polymer melts |
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| Authors: | N. Sombatsompop N. Intawong |
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| Affiliation: | (1) Division of Materials Technology, School of Energy and Materials, King Mongkut’s University of Technology Thonburi (KMUTT), Bangmod, Bangkok 10140, Thailand e-mail: inarmpop@cc.kmutt.ac.th Fax: +662-4279062, TH;(2) Faculty of Industrial Engineering, Rajamangala Institute of Technology North Campus, Changmai, Thailand, TH |
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| Abstract: | This paper introduces a novel type of capillary rheometer, with respect to its design and operation, for investigating flow properties of a polymer melt. The constructed capillary rheometer is fitted into a standard tensile testing machine such that the mode of extrusion could be altered. The equipment features the possibility of moving either the piston or the barrel, the latter being novel in design. In addition, this work presents a novel pressure sensor for determining the pressure drop along the die in the capillary rheometer. It is found that the constructed capillary rheometer, coupled with the novel pressure sensor, is a useful device to monitor the flow properties of the polymer melt. The preliminary results show that the flow properties are dependent not only on the test condition used, but also on the mode of operation. Received: 21 May 1999 / Reviewed and accepted: 31 May 1999 |
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| Keywords: | Capillary rheometer Polymer melts Rheological properties Pressure transducer Non-Newtonian behaviour Psuedoplastic fluids Low-density polyethylene Polymer melt flow properties Polymer rheologyInstrumentation |
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