CA2144766A1 - Determination of the extent of cross-linking prior to the intentional curing of polymers - Google Patents

Determination of the extent of cross-linking prior to the intentional curing of polymers

Info

Publication number
CA2144766A1
CA2144766A1 CA002144766A CA2144766A CA2144766A1 CA 2144766 A1 CA2144766 A1 CA 2144766A1 CA 002144766 A CA002144766 A CA 002144766A CA 2144766 A CA2144766 A CA 2144766A CA 2144766 A1 CA2144766 A1 CA 2144766A1
Authority
CA
Canada
Prior art keywords
extent
cross
linking
polymers
determination
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
Application number
CA002144766A
Other languages
French (fr)
Other versions
CA2144766C (en
Inventor
A. Brent Strong
R. Scott Merrell
Barry M. Lunt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brigham Young University
Original Assignee
A. Brent Strong
R. Scott Merrell
Barry M. Lunt
Brigham Young University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by A. Brent Strong, R. Scott Merrell, Barry M. Lunt, Brigham Young University filed Critical A. Brent Strong
Publication of CA2144766A1 publication Critical patent/CA2144766A1/en
Application granted granted Critical
Publication of CA2144766C publication Critical patent/CA2144766C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/32—Paints; inks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/44—Resins; rubber; leather
    • G01N33/442—Resins, plastics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0092—Visco-elasticity, solidification, curing, cross-linking degree, vulcanisation or strength properties of semi-solid materials

Abstract

Detection of the extent of cross-linking of a high impedance polymer material during a pre-cure stage is disclosed. The sen-sor inputs a test signal (20) to the polymer material (21) and a fixed resistance reference material (22) to generate an output vol-tage (27) which is indicative of the impedance of the sample. The initial output adopted as a reference and subsequent voltage dif-ferences are taken as a relative indicator of the extent of cross-linking which has occurred within the polymer material.
CA002144766A 1992-09-22 1993-09-20 Determination of the extent of cross-linking prior to the intentional curing of polymers Expired - Fee Related CA2144766C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/948,008 US5432435A (en) 1992-09-22 1992-09-22 Detection of cross-linking in pre-cure stage polymeric materials by measuring their impedance
US07/948,008 1992-09-22
PCT/US1993/008813 WO1994007128A1 (en) 1992-09-22 1993-09-20 Determination of the extent of cross-linking prior to the intentional curing of polymers

Publications (2)

Publication Number Publication Date
CA2144766A1 true CA2144766A1 (en) 1994-03-31
CA2144766C CA2144766C (en) 2003-12-16

Family

ID=25487115

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002144766A Expired - Fee Related CA2144766C (en) 1992-09-22 1993-09-20 Determination of the extent of cross-linking prior to the intentional curing of polymers

Country Status (9)

Country Link
US (2) US5432435A (en)
EP (1) EP0729573B1 (en)
JP (1) JP3477204B2 (en)
KR (1) KR950703734A (en)
AT (1) ATE229179T1 (en)
AU (1) AU4927993A (en)
CA (1) CA2144766C (en)
DE (1) DE69332545T2 (en)
WO (1) WO1994007128A1 (en)

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US5432435A (en) * 1992-09-22 1995-07-11 Brigham Young University Detection of cross-linking in pre-cure stage polymeric materials by measuring their impedance
US5635845A (en) * 1992-09-22 1997-06-03 Brigham Young University Detection of cross-linking in pre-cure stage polymeric materials by measuring their resistance
US5572115A (en) * 1992-09-22 1996-11-05 Brigham Young University Device and method for measuring charge carrying activity in generally non-conductive materials
US5528133A (en) * 1994-07-21 1996-06-18 Powerpoint Technologies, Inc. Method and apparatus for determining the quality of a colloidal suspension
US6002259A (en) * 1998-01-20 1999-12-14 Rice University Electrostatic adhesion tester for thin film conductors
US5907280A (en) * 1997-04-28 1999-05-25 Dkl International, Inc. Static electrification assisted dielectrokinesis detection of plastics and other materials
US5872447A (en) * 1997-09-10 1999-02-16 Hager, Iii; Nathaniel E. Method and apparatus for in-situ measurement of polymer cure status
US6208152B1 (en) * 1999-10-14 2001-03-27 International Business Machines Corporation Redundant resistor matching detector with constant percentage threshold
US7245985B2 (en) * 2001-03-21 2007-07-17 Signature Control Systems Process and apparatus for improving and controlling the vulcanization of natural and synthetic rubber compounds
US7167773B2 (en) * 2001-03-21 2007-01-23 Signature Control Systems Process and apparatus for improving and controlling the curing of natural and synthetic moldable compounds
FR2831668B1 (en) * 2001-10-26 2004-10-15 Inst Francais Du Petrole METHOD FOR EVALUATING THE REMAINING TIME BEFORE GELIFICATION OF A THERMOSETTING COMPOSITION
WO2003076953A2 (en) * 2002-03-06 2003-09-18 Bpw, Inc. An electrical condition monitoring method for polymers
CA2776036A1 (en) * 2002-08-08 2004-02-19 Sun Chemical Corporation Apparatus and method for quantitatively measuring liquid film drying rates on substrates
US20040058453A1 (en) * 2002-09-20 2004-03-25 3M Innovative Properties Company Reaction pouch comprising an analytical sensor
US7676953B2 (en) 2006-12-29 2010-03-16 Signature Control Systems, Inc. Calibration and metering methods for wood kiln moisture measurement
WO2009023488A1 (en) * 2007-08-10 2009-02-19 Consolidated Research, Inc. Apparatus and method for high-speed determination of bioelectric electrode impedances
US8349104B2 (en) * 2008-07-21 2013-01-08 United Technologies Corporation Method and assembly for validating bond line
US9128048B2 (en) 2010-12-09 2015-09-08 Owens Corning Intellectual Capital, Llc Method for online determination of cure status of glass fiber products
CN103402724A (en) * 2010-12-09 2013-11-20 欧文斯科宁知识产权资产有限公司 Control method determining cure status of glass fiber products
US10302455B2 (en) * 2015-10-09 2019-05-28 Bellutech Llc Modules, systems, and methods for monitoring environmental conditions
WO2022100649A1 (en) * 2020-11-11 2022-05-19 固瑞特模具（太仓）有限公司 Intelligent controlling and monitoring system for wind power blade mold and application thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935053A (en) * 1969-04-24 1976-01-27 Photocircuits Corporation Process for preparing thermosetting laminates
US3791792A (en) * 1972-03-29 1974-02-12 Northrop Corp Polymer cure determination method
JPS52153651A (en) * 1976-06-17 1977-12-20 Sony Corp Gain changing circuit
US4129824A (en) * 1976-11-22 1978-12-12 Howes E Electronic hydrometer
US4723908A (en) * 1985-05-01 1988-02-09 Kranbuehl David E Dielectric probe; method and apparatus including its use
US4777431A (en) * 1986-06-27 1988-10-11 Micromet Instruments, Inc. Apparatus for monitoring dielectric changes in polymeric materials
US4891591A (en) * 1988-02-16 1990-01-02 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Nonintrusive method and apparatus for monitoring the cure of polymeric materials
US5095278A (en) * 1988-11-21 1992-03-10 Ta Instruments, Inc. Planar interdigitated dielectric sensor
US5089780A (en) * 1989-10-04 1992-02-18 Hughes Aircraft Company Oil quality monitor sensor and system
US5184077A (en) * 1990-04-05 1993-02-02 G-C Acquisition, Inc. Abrasion-resistant, high pressure dielectric sensors
JPH04150224A (en) * 1990-10-15 1992-05-22 Internatl Business Mach Corp <Ibm> Integrated circuit
US5210499A (en) * 1990-11-16 1993-05-11 The United States Of America As Represented By The Secretary Of The Army In-situ sensor method and device
US5200027A (en) * 1991-11-12 1993-04-06 General Motors Corporation Oil microsensor having interdigitated electrodes with rough surfaces and methods of making and using the same
US5432435A (en) * 1992-09-22 1995-07-11 Brigham Young University Detection of cross-linking in pre-cure stage polymeric materials by measuring their impedance

Also Published As

Publication number Publication date
EP0729573A4 (en) 1996-05-14
US5432435A (en) 1995-07-11
US5596268A (en) 1997-01-21
JP3477204B2 (en) 2003-12-10
ATE229179T1 (en) 2002-12-15
EP0729573B1 (en) 2002-12-04
AU4927993A (en) 1994-04-12
DE69332545T2 (en) 2003-04-10
JPH08501634A (en) 1996-02-20
DE69332545D1 (en) 2003-01-16
CA2144766C (en) 2003-12-16
WO1994007128A1 (en) 1994-03-31
KR950703734A (en) 1995-09-20
EP0729573A1 (en) 1996-09-04

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