GB1496414A - Extrusion rheometers - Google Patents

Extrusion rheometers

Info

Publication number
GB1496414A
GB1496414A GB906275A GB906275A GB1496414A GB 1496414 A GB1496414 A GB 1496414A GB 906275 A GB906275 A GB 906275A GB 906275 A GB906275 A GB 906275A GB 1496414 A GB1496414 A GB 1496414A
Authority
GB
United Kingdom
Prior art keywords
constriction
piston
tube
plug
extrude
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.)
Expired
Application number
GB906275A
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.)
Novartis AG
Original Assignee
Ciba Geigy AG
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 Ciba Geigy AG filed Critical Ciba Geigy AG
Priority to GB906275A priority Critical patent/GB1496414A/en
Publication of GB1496414A publication Critical patent/GB1496414A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
    • G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
    • G01N11/08—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by measuring pressure required to produce a known flow
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

1496414 Rheometer CIBA-GEIGY AG 5 Feb 1976 [5 March 1975] 9062/75 Heading G1S A rheometer comprises a tube 1 having a constriction 2 providing a passage 3 symmetrical about a transverse plane through its midpoint, pistons 4, 4' each side of the constriction, each piston having an air vent 6, 6', means for applying to either piston the load necessary to extrude a sample at a predetermined rate through the constriction, and means for measuring the applied load. To investigate the thixotropic properties of a material placed above the constriction 2, tube 1 is stood on a load cell 8, piston 4 is moved into contact with the material or the air above the material is vented at 6, a crosshead 9 is moved downwardly until rod 10 engages piston 4 and seals vent 6, crosshead 9 is then moved down at a constant predetermined rate while the force applied is measured by load cell 8, and the tube 1 is then inverted and the procedure repeated to extrude the material back through the constriction by applying force to piston 4'. The decrease in the force required to extrude the material at the predetermined rate is a measure of the thixotropy of the material. The constriction may be a plug held by screw threads 14 and having a driving formation (15, 15') at one end, Fig. 2 (not shown), a plug held in position by a transverse locking screw (26) Fig. 8 (not shown) or a plug having a middle flange (37) held between two halves of the tube 1 engaging by screw threads, Figs. 9, 10 (not shown), each plug having one or more passages 3 therein. Each piston may be provided with a recess (24) for engaging the prongs on an extraction tool, Figs. 4-7 (not shown).
GB906275A 1976-02-05 1976-02-05 Extrusion rheometers Expired GB1496414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB906275A GB1496414A (en) 1976-02-05 1976-02-05 Extrusion rheometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB906275A GB1496414A (en) 1976-02-05 1976-02-05 Extrusion rheometers

Publications (1)

Publication Number Publication Date
GB1496414A true GB1496414A (en) 1977-12-30

Family

ID=9864671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB906275A Expired GB1496414A (en) 1976-02-05 1976-02-05 Extrusion rheometers

Country Status (1)

Country Link
GB (1) GB1496414A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021854A1 (en) * 1995-01-12 1996-07-18 Vladimir Nikolaevich Belonenko Devices for measuring viscosity and for investigating fluid flow through capillary-porous mediums
EP1426753A2 (en) * 2002-11-28 2004-06-09 Robert Bosch Gmbh Rheometer
EP2518469A1 (en) * 2011-04-29 2012-10-31 Sika Technology AG Rheology measuring device and method for calculating at least one viscosity value
RU2471167C1 (en) * 2008-11-28 2012-12-27 Путцмайстер Инжиниринг Гмбх Rheometre for thick materials

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021854A1 (en) * 1995-01-12 1996-07-18 Vladimir Nikolaevich Belonenko Devices for measuring viscosity and for investigating fluid flow through capillary-porous mediums
EP1426753A2 (en) * 2002-11-28 2004-06-09 Robert Bosch Gmbh Rheometer
EP1426753A3 (en) * 2002-11-28 2006-04-26 Robert Bosch Gmbh Rheometer
RU2471167C1 (en) * 2008-11-28 2012-12-27 Путцмайстер Инжиниринг Гмбх Rheometre for thick materials
EP2518469A1 (en) * 2011-04-29 2012-10-31 Sika Technology AG Rheology measuring device and method for calculating at least one viscosity value
WO2012146614A1 (en) * 2011-04-29 2012-11-01 Sika Technology Ag Rheological measuring system and method for determining at least one viscosity value

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee