发明名称 |
Capillary rheometer plunger pressure transducer and measurement technique. |
摘要 |
A capillary rheometer apparatus includes a housing, a plunger, the housing having a reservoir for receiving the plunger in a polymer melt, and a mechanism for blocking flow of the melt out of the reservoir. A driving mechanism is included for driving the plunger longitudinally within the reservoir to move one end of the plunger in contact with the melt. A diaphragm, which is coupled to the one end of the plunger, deflects in response to melt pressure in the reservoir. A mechanism, responsive to diaphragm deflection, determines pressure of the melt. Another mechanism is included for determining the temperature of the melt and a further mechanism is included for indicating longitudinal movement of the plunger. From such determinations, the PVT characteristics and the apparent shear viscosity characteristics of the polymer melt can be obtained. <IMAGE> |
申请公布号 |
EP0598644(A1) |
申请公布日期 |
1994.05.25 |
申请号 |
EP19930402739 |
申请日期 |
1993.11.09 |
申请人 |
DYNISCO, INC. |
发明人 |
GRUDZIEN, CHRISTOPHER P., CABINET BALLOT-SCHMIT;MALLOY, ROBERT, CABINET BALLOT-SCHMIT;REILLY,JAMES F. CABINET BALLOT-SCHMIT |
分类号 |
G01L9/00;G01N11/06;G01N11/08;G01N33/44 |
主分类号 |
G01L9/00 |
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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