CA2078277A1 - Ultrasonic Characterization of Polymer Melts Under Processing Conditions - Google Patents
Ultrasonic Characterization of Polymer Melts Under Processing ConditionsInfo
- Publication number
- CA2078277A1 CA2078277A1 CA2078277A CA2078277A CA2078277A1 CA 2078277 A1 CA2078277 A1 CA 2078277A1 CA 2078277 A CA2078277 A CA 2078277A CA 2078277 A CA2078277 A CA 2078277A CA 2078277 A1 CA2078277 A1 CA 2078277A1
- Authority
- CA
- Canada
- Prior art keywords
- polymer
- polymer melt
- echoes
- ultrasonic
- processed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/032—Analysing fluids by measuring attenuation of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/022—Liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/025—Change of phase or condition
- G01N2291/0252—Melting, molten solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0421—Longitudinal waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/102—Number of transducers one emitter, one receiver
Abstract
A method and apparatus for ultrasonically characterizing a polymer melt flowing in a predetermined direction between two opposed parallel surfaces spaced from one another to define a gap filled with polymer are disclosed. Ultrasonic pulses are propagated through the polymer melt between the two surfaces in a direction normal to the direction of flow for interaction with the polymer, the ultrasonic pulses having a duration such as to prevent successive echoes from overlapping with one another while reverberating between the two surfaces. The time delay between two echoes exiting from the polymer melt and generated from each pulse having interacted with the polymer is continuously monitored while simultaneously monitoring amplitude variations of the two echoes, to provide output signals representative of ultrasonic velocity and attenuation in the polymer melt. These output signals are processed to obtain data comprising ultrasonic velocity and attenuation values measured simultaneously as a function of time. The data is then processed to derive quantitative information relating to viscoelastic properties, structure or composition of the polymer, which can be used as input data in a closed loop process control system.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002078277A CA2078277C (en) | 1992-09-15 | 1992-09-15 | Ultrasonic characterization of polymer melts under processing conditions |
US07/952,979 US5433112A (en) | 1992-09-15 | 1992-09-29 | Ultrasonic characterization of polymer melts under processing conditions |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002078277A CA2078277C (en) | 1992-09-15 | 1992-09-15 | Ultrasonic characterization of polymer melts under processing conditions |
US07/952,979 US5433112A (en) | 1992-09-15 | 1992-09-29 | Ultrasonic characterization of polymer melts under processing conditions |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2078277A1 true CA2078277A1 (en) | 1994-03-16 |
CA2078277C CA2078277C (en) | 1999-09-14 |
Family
ID=25675525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002078277A Expired - Lifetime CA2078277C (en) | 1992-09-15 | 1992-09-15 | Ultrasonic characterization of polymer melts under processing conditions |
Country Status (2)
Country | Link |
---|---|
US (1) | US5433112A (en) |
CA (1) | CA2078277C (en) |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9200218D0 (en) * | 1992-01-07 | 1992-02-26 | Univ Bradford | Method and apparatus for the identification of species |
RU2061218C1 (en) * | 1992-07-22 | 1996-05-27 | Всероссийский научно-исследовательский институт природных газов и газовых технологий | Device for determination of properties of fluid media |
US5951163A (en) * | 1996-10-16 | 1999-09-14 | National Research Council Of Canada | Ultrasonic sensors for on-line monitoring of castings and molding processes at elevated temperatures |
US5790249A (en) * | 1996-12-23 | 1998-08-04 | Eastman Chemical Company | Flow contamination tester |
US6296385B1 (en) * | 1997-05-12 | 2001-10-02 | Mississippi State University | Apparatus and method for high temperature viscosity and temperature measurements |
US5992223A (en) * | 1997-07-14 | 1999-11-30 | Chandler Engineering Company Llc | Acoustic method for determining the static gel strength of a cement slurry |
US6227040B1 (en) * | 1998-02-03 | 2001-05-08 | Caldon, Inc. | Method and apparatus for determining the viscosity of a fluid in a container |
AR024361A1 (en) | 1999-06-15 | 2002-10-02 | Dow Chemical Co | PROCESS AND APPLIANCE TO PREPARE A COMPOSITION USING A CONTINUOUS REACTOR AND SERIES MIXER |
WO2000077515A2 (en) * | 1999-06-16 | 2000-12-21 | Teijin Twaron B.V. | Process for determining the polymer concentration in a spinning dope solution |
US6672164B1 (en) * | 1999-06-16 | 2004-01-06 | Teijin Twaron B.V. | Process for determining the polymer concentration in a spinning dope solution |
US6360610B1 (en) * | 1999-11-02 | 2002-03-26 | Jacek Jarzynski | Condition monitoring system and method for an interface |
EP1299222A2 (en) * | 2000-06-15 | 2003-04-09 | Dow Global Technologies Inc. | Process and apparatus for preparing polymers, utilizing a side stream ultrasonic device for monitoring and controlling the properties of the polymers |
US6534964B1 (en) * | 2000-09-22 | 2003-03-18 | International Business Machines Corporation | Apparatus and method for determining stiffness properties of an anisotropic electronic substrate using scanning acoustic microscopy |
US6951128B2 (en) * | 2000-12-07 | 2005-10-04 | University Of Bristol | Polymeric solutions rheometer |
GB0031564D0 (en) * | 2000-12-22 | 2001-02-07 | Borealis Tech Oy | Viscosity measurement |
US6513385B1 (en) * | 2001-05-08 | 2003-02-04 | Halliburton Energy Services, Inc. | Acoustic sensor for pipeline deposition characterization and monitoring |
US6941819B1 (en) | 2001-09-28 | 2005-09-13 | Chandler Instruments Company L.L.C. | Apparatus and method for determining the dynamic mechanical properties of a cement sample |
US6828371B2 (en) * | 2002-01-11 | 2004-12-07 | Ford Global Technologies, Llc | Method for producing a well-exfoliated and dispersed polymer silicate nanocomposite by ultrasonication |
US7017412B2 (en) * | 2002-04-18 | 2006-03-28 | University Of Utah Research Foundation | Continuous wave ultrasonic process monitor for polymer processing |
NL1020714C2 (en) * | 2002-05-30 | 2003-12-02 | Tno | Ultrasonic characterization of high concentration particles. |
DE10249507A1 (en) * | 2002-10-23 | 2004-05-06 | Basf Ag | Method for determining the amount of polymer deposited from (meth) acrylic acid and / or (meth) acrylic acid esters |
US7358282B2 (en) * | 2003-12-05 | 2008-04-15 | Kimberly-Clark Worldwide, Inc. | Low-density, open-cell, soft, flexible, thermoplastic, absorbent foam and method of making foam |
FR2873444B1 (en) * | 2004-07-22 | 2007-03-02 | Univ Pasteur | PIEZORHEOMETER MEASUREMENT CELL AND CORRESPONDING PIEZORHEOMETER |
US7291382B2 (en) * | 2004-09-24 | 2007-11-06 | Kimberly-Clark Worldwide, Inc. | Low density flexible resilient absorbent open-cell thermoplastic foam |
US20060148959A1 (en) * | 2004-12-06 | 2006-07-06 | Avraam Isayev | Process for preparing polymer nanocomposites and nanocomposites prepared therefrom |
EP1726947A1 (en) * | 2005-04-20 | 2006-11-29 | Sika Technology AG | device and method for ultrasonically determining the dynamic elastic modulus of a material |
US8158689B2 (en) * | 2005-12-22 | 2012-04-17 | Kimberly-Clark Worldwide, Inc. | Hybrid absorbent foam and articles containing it |
US20070148433A1 (en) * | 2005-12-27 | 2007-06-28 | Mallory Mary F | Elastic laminate made with absorbent foam |
WO2008048333A2 (en) * | 2006-10-18 | 2008-04-24 | Luna Innovations Incorporated | Method and apparatus for calibrating an ultrasonic sensing system used to detect moving objects |
DE102006053032A1 (en) * | 2006-11-10 | 2008-05-15 | Schaeffler Kg | Determining the damping properties of greases comprises introducing a layer of grease between two plates, applying an excitation signal to one plate and detecting a response signal from the other plate |
ES2323624B1 (en) * | 2007-08-09 | 2011-01-31 | Fundacio Privada Ascamm | ULTRASONIC DEVICE FOR MOLDING OF MICROPIEZAS DE PLASTICO. |
DE102009004946B4 (en) * | 2008-10-22 | 2015-04-09 | Sikora Aktiengesellschaft | Method and device for measuring the temperature of a plasticized plastic at the exit of an extruder |
US9003894B2 (en) * | 2012-04-25 | 2015-04-14 | General Electric Company | Ultrasonic flow measurement system |
CN103954685B (en) * | 2014-04-22 | 2017-02-15 | 华南理工大学 | Device and method for ultrasonically measuring flow orientation of polymer melt on line |
US9702855B2 (en) | 2014-08-29 | 2017-07-11 | Baker Hughes Incorporated | Acoustic interface device |
DE102015118226A1 (en) * | 2015-07-17 | 2017-01-19 | Sonovum AG | Apparatus for the examination of materials by acoustic spectroscopy |
DE102016102131A1 (en) * | 2015-07-17 | 2017-01-19 | E3 Technology Sp. z o.o. | Apparatus and method for the examination of materials by acoustic spectroscopy |
CN106053596B (en) * | 2016-05-18 | 2019-03-15 | 陕西煤业化工技术研究院有限责任公司 | A kind of nano fluid heat transferring mass transfer monitoring device and method |
DE102018114408A1 (en) * | 2018-06-15 | 2019-12-19 | Werkzeugbau Siegfried Hofmann Gmbh | Plastic processing tool |
CN111964757B (en) * | 2020-08-13 | 2022-11-11 | 浙江苍南仪表集团股份有限公司 | Transducer consistency evaluation method based on echo signal characteristic parameters |
US11187677B1 (en) | 2021-03-17 | 2021-11-30 | Wesley Nelson Cobb | Combined ultrasonic and thermomechanical property measurement |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4015470A (en) * | 1973-12-26 | 1977-04-05 | Trw Inc. | Flow measuring method and apparatus |
US4559810A (en) * | 1981-07-09 | 1985-12-24 | Applied Polymer Technology, Inc. | Method for determining resin viscosity with ultrasonic waves |
US4509360A (en) * | 1983-06-24 | 1985-04-09 | Massachusetts Institute Of Technology | On-line measurement of fluid mixtures |
GB8427713D0 (en) * | 1984-11-02 | 1984-12-12 | Evans T E | Liquid detection and identification |
US4677842A (en) * | 1985-03-18 | 1987-07-07 | Canadian Patents & Development Limited | Ultrasonic density measurement |
US4754645A (en) * | 1987-05-14 | 1988-07-05 | Canadian Patents And Development Limited | Ultrasonic characterization of polymers under simulated processing conditions |
US5170667A (en) * | 1989-12-08 | 1992-12-15 | Tokimec, Inc. | Method and apparatus for monitoring state of polymeric materials |
-
1992
- 1992-09-15 CA CA002078277A patent/CA2078277C/en not_active Expired - Lifetime
- 1992-09-29 US US07/952,979 patent/US5433112A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5433112A (en) | 1995-07-18 |
CA2078277C (en) | 1999-09-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |