DD159935A3 - Verfahren zur kontinuierlichen messung der aenderungen der rheologischen eigenschaften von monomeren waehrend des polymerisationsprozesses - Google Patents

Verfahren zur kontinuierlichen messung der aenderungen der rheologischen eigenschaften von monomeren waehrend des polymerisationsprozesses Download PDF

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DD159935A3
DD159935A3 DD79214832A DD21483279A DD159935A3 DD 159935 A3 DD159935 A3 DD 159935A3 DD 79214832 A DD79214832 A DD 79214832A DD 21483279 A DD21483279 A DD 21483279A DD 159935 A3 DD159935 A3 DD 159935A3
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German Democratic Republic
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polymerization
polymerization process
rheological properties
changes
during
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DD79214832A
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Jiri Docekal
Ludvik Parma
Ivan Pelant
Petr Sladky
Josef Zdrazil
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Ni Instiut Khim Oboru
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    • 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; Plastics; Rubber; Leather
    • G01N33/442—Resins; Plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • 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
    • 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
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/222—Constructional or flow details for analysing fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00575—Controlling the viscosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00101—Reflux columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/0015—Controlling the temperature by thermal insulation means
    • 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
    • G01N2291/0251—Solidification, icing, curing composites, polymerisation
    • 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
    • G01N2291/028—Material parameters
    • G01N2291/02818—Density, viscosity
    • 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

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Acoustics & Sound (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

Das Verfahren gemaess der Erfindung ist dadurch gekennzeichnet, dass in das Polymerisationssystem Ultraschall-Longitudinalwellen mit einer Frequenz von 0,02 bis 100 MHz eingeleitet werden und waehrend des Polymerisationsprozesses die Absorption oder die Ausbereitungsgeschwindigkeit der genannten Wellen bei einer oder mehreren Frequenzen des genannten Bereichs aufgenommen und gemessen wird. Der Hauptnutzen dieses Verfahrens besteht in der Moeglichkeit, die raeumlichen rheologisch Eigenschaften (z.B. der komplexen Viskositaet) waehrend der Polymerisation systematisch und kontinuierlich zu messen, und ferner in der Moeglichkeit, die Bildung oertlicher Kavitationen und der gasfoermigen Phase des Monomers zu ermitteln, deren Folge eine Schaumbildung in dem System und die Verstopfung des Ruecklaufkuehlers durch das Polymer sind. Aufgrund einer Analyse der Messwerte koennen die optimalen Kennwerte des Polymerisationsprozesses der einzelnen Monomere festgelegt und die endgueltigen Eigenschaften des Polymers vorhergesagt werden. Die kontinuierlich gemessenen Werte des Absorptionskoeffizienten der Ultraschall-Longitudialwellen koennen auch als Rueckkopplung im Steuerungsprozess der Polymerisation verwendet werden. Das Verfahren gemaess der Erfindung kann fuer Polymerisationsprozesse jeder Art angewendet werden, z.B. fuer die Polymerisation in einer Emulsion, in einer Loesung u.ae.

Description

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Claims (1)

  1. Φ ο ρ μ y λ a κθοορθτθηκη
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    0,02 - 100 Mru;, ηρκ^ΘΜ β Te^eHMe npou;ecca no^MMepM3a ITHM CHMMaeTCfl M 3aMepiieTCiI aÖCOpÖI^MH MM CKOpOCTb pacnpocTpaHeHMfl yicaeaHHHX βολκ»
DD79214832A 1978-08-01 1979-07-24 Verfahren zur kontinuierlichen messung der aenderungen der rheologischen eigenschaften von monomeren waehrend des polymerisationsprozesses DD159935A3 (de)

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CS785055A CS212352B1 (en) 1978-08-01 1978-08-01 Method of continuous measuring the changes of rheological properties of polymeres in the course of the polymerization process

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JP (1) JPS5547449A (de)
CS (1) CS212352B1 (de)
DD (1) DD159935A3 (de)
DE (1) DE2931282A1 (de)
FR (1) FR2432709A1 (de)
GB (1) GB2027201B (de)
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Publication number Publication date
JPS5547449A (en) 1980-04-03
FR2432709A1 (fr) 1980-02-29
DE2931282A1 (de) 1980-02-21
CS212352B1 (en) 1982-03-26
RO77681A (ro) 1982-02-01
US4327587A (en) 1982-05-04
PL217486A2 (de) 1980-04-08
GB2027201B (en) 1983-05-18
FR2432709B1 (de) 1984-10-05
GB2027201A (en) 1980-02-13
PL118946B2 (en) 1981-11-30

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