发明名称 |
Prediction of extrusion performance of polymers |
摘要 |
An apparatus is provided for predicting the extrusion performance of a thermoplastic resinous polymer, which includes at least three and preferably four capillaries arranged in series with each successive capillary having a larger passageway than that of the immediately preceding capillary and with each capillary having substantially the same ratio of passageway length to cross-sectional area. The apparatus also includes a pump for forcing a heated polymer melt through the capillaries at a constant volumetric flow rate, a sensor for measuring the temperature of the polymer melt, a sensor for measuring the pressure drop of the polymer across each capillary, and a combination recorder and processor for determining the polymer viscosity in each capillary (different shear rates), whereby the extrusion performance of the polymer can be predicted. A method for predicting extrusion performance of a thermoplastic resinous utilizing these polymer capillaries is also provided.
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申请公布号 |
US4425790(A) |
申请公布日期 |
1984.01.17 |
申请号 |
US19810332681 |
申请日期 |
1981.12.21 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
BICE, WILLIAM L.;GRAVES, JR., ERNEST D.;WAGENER, GERALD P. |
分类号 |
G01N11/08;G01N33/44;(IPC1-7):G01N11/08 |
主分类号 |
G01N11/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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