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公开(公告)号：EP0347055A2
公开(公告)日：1989-12-20
申请号：EP89305324.9
申请日：1989-05-25
申请人： RHEOMETRICS, INC.
CPC分类号： G01N11/08 , G01N33/442
摘要： On-line rheological measurements are made utilizing a rheometer (20) of the type in which a first metering pump (24) delivers diverted melt from a process main stream to a capillary passage (30) and a second metering pump (34) returns the diverted melt from the capillary passage (30) to the process main stream and the viscosity of the diverted melt is measured by controlling the rate of flow of the melt to maintain constant the pressure drop between spaced apart locations along the capillary passage (30) and measuring the temperature of the melt in the capillary passage (30). The measurements may be made while controlling the speed of the second metering pump (34) independent of the speed of the first metering pump (24) to maintain the pressure at the exit (66) of the capillary passage (30) essentially constant. The capillary passage (30) is placed in close proximity to the process main stream for maintaining a relatively short residence time during which the diverted melt resides outside the process main stream so as to attain a relatively quick response to changes in the measured viscosity. The rheometer (20) includes a relatively thin plate interposed between first and second blocks, the plate including a slot establishing a chamber between the first and second blocks for providing the capillary passage (30).
摘要翻译： 使用其中第一计量泵（24）将转移的熔体从过程主流输送到毛细管通道（30）的类型的流变仪（20）进行在线流变学测量，而第二计量泵（34）返回 将熔融物从毛细管通道（30）转移到工艺主流，并且通过控制熔体流动速率来保持恒定的沿着毛细管通道（30）的间隔开的位置和 测量毛细管通道（30）中熔体的温度。 可以在不依赖于第一计量泵（24）的速度的同时控制第二计量泵（34）的速度以维持毛细通道（30）的出口（66）处的压力基本上恒定的情况下进行测量。 毛细管通道（30）被放置在靠近工艺主流的位置，以保持相对较短的停留时间，在此期间转向的熔体位于工艺主流之外，以便对测量的粘度的变化获得相对快速的响应。 流变仪（20）包括介于第一和第二块之间的相对较薄的板，该板包括在第一和第二块之间建立一个腔室的槽，用于提供毛细通道（30）。
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公开(公告)号：EP0347055B1
公开(公告)日：1997-08-13
申请号：EP89305324.9
申请日：1989-05-25
申请人： RHEOMETRICS, INC.
CPC分类号： G01N11/08 , G01N33/442
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3.发明公开
公开(公告)号：EP0545728A1
公开(公告)日：1993-06-09
申请号：EP92311088.6
申请日：1992-12-04
申请人： RHEOMETRICS, INC.
发明人： Eschbach, Alan R.
CPC分类号： G01N33/42 , G01N11/162 , G01N2203/0025 , G01N2203/0094 , G01N2203/0228
摘要： An improvement in a rheometer (10) and a method for measuring rheological properties of a viscoelastic test specimen at different temperatures, at which different temperatures the viscoelastic properties exhibit a relatively wide difference, wherein the test specimen is placed between and is coupled with opposed plates, one of the opposed plates (42) is oscillated angularly relative the other of the opposed plates (40), and the angular displacement of one of the plates relative to the other of the plates and the torque associated with the relative angular displacement are measured within an optimum range of torque and angular displacement for determining the rheological properties, wherein a first contact area (64) on one of the opposed plates (42) is coupled with the test specimen when the test specimen is at one of the different temperatures, and a second contact area (66) on the one of the opposed plates (42) is coupled with the test specimen when the test specimen is at another of the different temperatures, the first contact area (64) being different from the second contact area (66) such that, by virtue of the difference between the first and second contact areas, the torque and the relative angular displacement measured at each of the one and the other of the different temperatures fall within the optimum range.
摘要翻译： 流变仪（10）的改进以及在不同温度下测量粘弹性试样的流变特性的方法，其中不同温度下的粘弹性表现出相对较大的差异，其中将试样置于相对的板 相对的板（42）中的一个相对于相对的板（40）中的另一个成角度地振荡，并且测量板中的一个相对于另一个板的角位移以及与相对角位移相关联的扭矩 在用于确定流变性质的扭矩和角位移的最佳范围内，其中当所述测试样品处于不同温度之一时，所述相对板（42）中的一个上的第一接触区域（64）与所述测试样品相耦合， 并且当所述相对板（42）中的另一个处于另一个时，所述相对板（42）中的一个上的第二接触区域（66）与所述试样结合 所述不同温度，所述第一接触区域（64）不同于所述第二接触区域（66），使得通过所述第一和第二接触区域之间的差异，在所述第一接触区域中的每一个处测量的扭矩和相对角位移 而另一种不同的温度落在最佳范围内。
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公开(公告)号：EP0545728B1
公开(公告)日：1997-09-17
申请号：EP92311088.6
申请日：1992-12-04
申请人： RHEOMETRICS, INC.
发明人： Eschbach, Alan R.
CPC分类号： G01N33/42 , G01N11/162 , G01N2203/0025 , G01N2203/0094 , G01N2203/0228
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公开(公告)号：EP0769690A2
公开(公告)日：1997-04-23
申请号：EP96119795.1
申请日：1989-05-25
申请人： RHEOMETRICS, INC.
CPC分类号： G01N11/08 , G01N33/442
摘要： On-line rheological measurements are made utilizing a rheometer of the type in which a first metering pump delivers diverted melt from a process main stream to a capillary passage and a second metering pump returns the diverted melt from the capillary passage to the process main stream and the viscosity of the diverted melt is measured by controlling the rate of flow of the melt to maintain constant the pressure drop between spaced apart locations along the capillary passage and measuring the temperature of the melt in the capillary passage. The measurements may be made while controlling the speed of the second metering pump independent of the speed of the first metering pump to maintain the pressure at the exit of the capillary passage essentially constant. The capillary passage is placed in close proximity to the process main stream for maintaining a relatively short residence time during which the diverted melt resides outside the process main stream so as to attain a relatively quick response to changes in the measured viscosity. The rheometer includes a relatively thin plate interposed between first and second blocks, the plate including a slot establishing a chamber between the first and second blocks for providing the capillary passage.
摘要翻译： 在线流变学测量使用流变仪，其中第一计量泵将转移的熔体从过程主流输送到毛细通道，并且第二计量泵将转向的熔体从毛细管通道返回到过程主流， 通过控制熔体的流动速率来测量转向熔体的粘度，以保持沿着毛细通道的间隔开的位置之间的压降恒定，并测量毛细管通道中熔体的温度。 可以在不依赖第一计量泵的速度控制第二计量泵的速度的同时进行测量，以保持毛细通道出口处的压力基本恒定。 毛细管通道放置在靠近工艺主流的过程中，以保持相对较短的停留时间，在此期间转向的熔体位于工艺主流之外，以便获得对测量粘度变化的相对较快的响应。 流变仪包括介于第一和第二块之间的相对薄的板，所述板包括在第一和第二块之间建立腔室的槽，用于提供毛细管通道。
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公开(公告)号：EP0769690A3
公开(公告)日：1997-05-07
申请号：EP96119795.1
申请日：1989-05-25
申请人： RHEOMETRICS, INC.
CPC分类号： G01N11/08 , G01N33/442
摘要： On-line rheological measurements are made utilizing a rheometer of the type in which a first metering pump delivers diverted melt from a process main stream to a capillary passage and a second metering pump returns the diverted melt from the capillary passage to the process main stream and the viscosity of the diverted melt is measured by controlling the rate of flow of the melt to maintain constant the pressure drop between spaced apart locations along the capillary passage and measuring the temperature of the melt in the capillary passage. The measurements may be made while controlling the speed of the second metering pump independent of the speed of the first metering pump to maintain the pressure at the exit of the capillary passage essentially constant. The capillary passage is placed in close proximity to the process main stream for maintaining a relatively short residence time during which the diverted melt resides outside the process main stream so as to attain a relatively quick response to changes in the measured viscosity. The rheometer includes a relatively thin plate interposed between first and second blocks, the plate including a slot establishing a chamber between the first and second blocks for providing the capillary passage.
摘要翻译： 在线流变测量是利用流变仪进行的，其中第一计量泵将来自工艺主流的转向熔体输送到毛细管通道，并且第二计量泵将转移的熔体从毛细管通道返回到工艺主流并且 转向的熔体的粘度通过控制熔体的流动速率来测量，以保持毛细管通道间隔开的位置之间的压降恒定并测量毛细管通道中熔体的温度。 可以在控制第二计量泵的速度的同时独立于第一计量泵的速度进行测量，以将毛细管通路出口处的压力保持基本恒定。 将毛细管通道放置在紧靠工艺主流的位置，以保持相对短的停留时间，在此期间转移的熔体停留在工艺主流外，以便对所测粘度的变化获得相对快速的响应。 流变仪包括置于第一块和第二块之间的相对较薄的板，该板包括在第一块和第二块之间建立腔室的槽，用于提供毛细管通道。
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7.发明公开
公开(公告)号：EP0616204A1
公开(公告)日：1994-09-21
申请号：EP94301688.1
申请日：1994-03-09
申请人： RHEOMETRICS, INC.
发明人： Mode, Paul G.
CPC分类号： B29C47/92 , B29C47/0009 , B29C2947/92019 , B29C2947/92104 , B29C2947/922 , B29C2947/92209 , B29C2947/9238 , B29C2947/92457 , B29C2947/92514 , B29C2947/9258 , B29C2947/926 , B29C2947/92704 , B29C2947/92876 , B29C2947/92952 , G01N11/08 , G01N33/44 , G01N33/442 , G01N2011/0013
摘要： On-line rheological measurements are made utilizing a rheometer (20) of the type in which a first metering pump (24) delivers diverted melt from a process main stream to a capillary passage (36) and a second metering pump (34) returns the diverted melt from the capillary passage to the process main stream and the viscosity of the diverted melt is measured by controlling the rate of flow of the melt through the capillary passage to maintain constant the pressure drop between spaced apart locations along the capillary passage and measuring the temperature of the melt in the capillary passage. The measurements may be made while controlling the speed of the second metering pump independent of the speed of the first metering pump to maintain the pressure at the exit of the capillary passage essentially constant. A parallel flow passage (70) has an inlet placed between the first metering pump and the entrance to the capillary passage, in close juxtaposition with the entrance, and an outlet placed between the exit from the capillary passage and the second metering pump, and a valve (76) in the parallel flow passage is operated so that diverted melt selectively is passed through the parallel flow passage to attain a relatively quick response and relatively short residence time of the diverted melt in the rheometer.
摘要翻译： 使用其中第一计量泵（24）将转移的熔体从过程主流输送到毛细通道（36）的类型的流变仪（20）进行在线流变学测量，并且第二计量泵（34）使 将熔融物从毛细管通道转移到工艺主流，并且通过控制通过毛细管通道的熔体的流动速率来测量转向熔体的粘度，以保持沿着毛细通道的间隔开的位置之间的压降恒定，并测量 毛细管通道中熔体的温度。 可以在不依赖第一计量泵的速度控制第二计量泵的速度的同时进行测量，以保持毛细通道出口处的压力基本恒定。 平行流动通道（70）具有置于第一计量泵和毛细通道入口之间的入口，与入口紧密并置，并且出口设置在从毛细管通道的出口和第二计量泵之间，以及 操作平行流动通道中的阀（76），使得转向的熔体选择性地通过平行流动通道，以获得转向熔体在流变仪中的相对快速的响应和相对较短的停留时间。
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公开(公告)号：EP0769690B1
公开(公告)日：2000-09-06
申请号：EP96119795.1
申请日：1989-05-25
申请人： RHEOMETRICS, INC.
CPC分类号： G01N11/08 , G01N33/442
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公开(公告)号：EP0347055A3
公开(公告)日：1990-12-27
申请号：EP89305324.9
申请日：1989-05-25
申请人： RHEOMETRICS, INC.
CPC分类号： G01N11/08 , G01N33/442
摘要： On-line rheological measurements are made utilizing a rheometer (20) of the type in which a first metering pump (24) delivers diverted melt from a process main stream to a capillary passage (30) and a second metering pump (34) returns the diverted melt from the capillary passage (30) to the process main stream and the viscosity of the diverted melt is measured by controlling the rate of flow of the melt to maintain constant the pressure drop between spaced apart locations along the capillary passage (30) and measuring the temperature of the melt in the capillary passage (30). The measurements may be made while controlling the speed of the second metering pump (34) independent of the speed of the first metering pump (24) to maintain the pressure at the exit (66) of the capillary passage (30) essentially constant. The capillary passage (30) is placed in close proximity to the process main stream for maintaining a relatively short residence time during which the diverted melt resides outside the process main stream so as to attain a relatively quick response to changes in the measured viscosity. The rheometer (20) includes a relatively thin plate interposed between first and second blocks, the plate including a slot establishing a chamber between the first and second blocks for providing the capillary passage (30).
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