CN103105347A - Material viscosity testing method - Google Patents
Material viscosity testing method Download PDFInfo
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- CN103105347A CN103105347A CN2011103594972A CN201110359497A CN103105347A CN 103105347 A CN103105347 A CN 103105347A CN 2011103594972 A CN2011103594972 A CN 2011103594972A CN 201110359497 A CN201110359497 A CN 201110359497A CN 103105347 A CN103105347 A CN 103105347A
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- pole
- testing sample
- central rod
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Abstract
The invention discloses a concentric rectilinear moving type material viscosity testing method. The method comprises the following steps of: firstly, adding a central rod to a hollow charging barrel in a penetration manner, wherein the center line of the central rod is superposed with that of the charging barrel, and a gap between the charging barrel and the central rod forms a testing chamber; secondly, filling the testing chamber with a to-be-tested sample; then, enabling the central rod and the charging barrel to do relative rectilinear movement along the center line, and driving the to-be-tested sample to flow in laminar flow form under the action of dragging; measuring and recording the relative movement speed and the change as well as the acting force and the change between the central rod and the charging barrel; and finally, converting the acting force into shearing stress, and converting the speed into a shearing rate, thus obtaining the relation between the shearing stress and the shearing rate of the to-be-tested sample, and realizing the representation of material viscosity. In the method, the to-be-tested sample flows in a rectilinear form, is free of centrifugal force, and is subjected to shearing force under the action of dragging by the central rod or the charging barrel, so that the to-be-tested sample can flow in a laminar flow form, and the viscosity of a material can be tested more accurately.
Description
Technical field
The present invention relates to testing of materials field, especially flow measurement method.
Background technology
The instrument that is used for the viscoelasticity of test solid, semisolid or fluid is called flow graph, the method of testing that flow graph commonly used adopts mainly contains following 4 kinds of pattern: a, coaxial circles cartridge type at present, two coaxial cylinders, one fixing, another rotates, and makes between two coaxial cylinders the fluid in the annulus do annularly flow; B, capillary type, the certain fluid pressure differential of structure forces fluid to be extruded from kapillary in entrance capillaceous and exit; C, cone-plate or parallel-plate rotator type, two rotors in up and down, one fixing, another rotates, the sample generation shear flow at two rotor clearance places; D, banburying formula, rotor rotates in cavity, and the sample that stirs in cavity is done turbulent motion.
Coaxial circles cartridge type rheometer test method and cone-plate or parallel-plate rotator type rheometer test method have all been introduced centrifugal force, have caused corresponding test error, and the radius of gyration is larger, the faster error of rotating speed is just larger; In capillary type rheometer test method, sample flow belongs to pressure current, can not prevent volume element exchange between layers in fluid, and the laminar-flow type shear flow that requires with test philosophy has deviation; There is turbulent flow to exist in the sample flow of banburying formula rheometer test method, is not easy to finding the solution of the physical quantitys such as shear rate and shear stress.
Summary of the invention
The object of the present invention is to provide a kind of concentric rectilinearly-movable stickiness method of testing, it is mobile with the relative traveling priority driving testing sample between barrel by center-pole, allow testing sample flow with layer flow mode under the effect of dragging of center-pole or barrel, and can not produce centrifugal force, thereby make the stickiness test of material more accurate.
The objective of the invention is to be achieved through the following technical solutions.
A) at first, a center-pole is run through the barrel of a hollow from the center, both center lines overlap, and the space between barrel and center-pole consists of test chamber.
B) secondly, testing sample is loaded and riddles in test chamber.
C) then, allow center-pole make relative traveling priority with barrel along center line, drive testing sample by effect of dragging and make laminar-flow type and flow.
D) in the testing sample flow process, the speed of related movement between measurement and records center bar and barrel and variation thereof and center-pole and the acting force between barrel and the variation thereof of transmitting by testing sample.
E) last, force data is become shear stress through mathematic(al) manipulation, speed data is become shear rate through mathematic(al) manipulation, obtain the relation between the suffered shear stress of testing sample and shear rate, realize the sign of material stickiness.
In the present invention, testing sample is made streamlined flow, can not produce centrifugal force, thereby need not to consider the error of centrifugal force introducing when testing under high-rate of shear, for coaxial circles cartridge type rheometer test method and cone-plate or parallel-plate rotator type rheometer test method, wider test specification is arranged; Simultaneously, what bear between center-pole and barrel at testing sample under the effect of dragging of center-pole or barrel is shear force, thereby can flow with layer flow mode, be consistent with the desired type of flow of stickiness test philosophy, make the stickiness test of material more accurate.
Description of drawings
Fig. 1 is stickiness method of testing schematic diagram of the present invention.
In figure: 1, barrel; 2, center-pole; 3, testing sample; 4, power sensor; 5, linear electric motors.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Xsect is in the barrel 1 of rectangle, rectangular enclosure to be arranged, and cavity is long is l
1, wide be w
1, height is h
1, barrel 1 maintains static.The center-pole 2 that xsect is rectangle is placed by cavity central authorities, and center-pole 2 is long is l
2, wide be w
1, height is h
2Space between barrel 1 and center-pole 2 has consisted of the test chamber that is used for filling testing sample 3.Can flow and have the testing sample 3(of certain stickiness for example to contain the dough of certain moisture) in test chamber in the barrel 1 of packing into, and compacting, so that testing sample 3 can be full of test chamber.Power sensor 4 is installed on the junction of center-pole 2 and linear electric motors 5.Before Mobility Center bar 2, with the reading zero clearing of power sensor 4.Start linear electric motors 5, allow linear electric motors 5 drag center-pole 2 and move with the speed V that sets along center line, the movement velocity value V of records center bar 2 and the reading value F of power sensor 4.The movement velocity of transform center bar 2 records the power sensor 4 corresponding readings values under group switching centre bar 2 movement velocitys.Obtain shear rate, shear stress, viscosity according to following Formula For Solving, thereby can draw shear stress with the relation of shear rate change, realize that the material stickiness of testing sample 3 characterizes.
Above various in:
---shear rate, the translational speed of V---center-pole 2, h
1---the height of barrel 1 internal cavity, h
2---the height of center-pole 2, τ---shear stress, F---power, l
1---the length of barrel 1 internal cavity, w
1---barrel 1 internal cavity wide, η---viscosity.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations, and for example: barrel 1 can also be all circular with the cross-sectional profiles of center-pole 2; Barrel 1 can also be that center-pole 2 is fixing, barrel 1 is made traveling priority with relative traveling priority form between center-pole 2.All any modifications of making within the spirit and principles in the present invention, be equal to replacement etc., within protection scope of the present invention all should be included in.
Claims (1)
1. material stickiness method of testing comprises the following steps:
A) at first, a center-pole is run through the barrel of a hollow from the center, both center lines overlap;
B) secondly, testing sample is filled in barrel;
C) then, allow center-pole and barrel do relative motion, flow to drive testing sample;
D) in the testing sample flow process, the speed of related movement between measurement and records center bar and barrel and variation thereof and center-pole and the acting force between barrel and the variation thereof of transmitting by testing sample;
E) last, force data is become shear stress through mathematic(al) manipulation, speed data is become shear rate through mathematic(al) manipulation, obtain the relation between the suffered shear stress of testing sample and shear rate, realize the sign of material stickiness;
It is characterized in that: the space between barrel and center-pole consists of test chamber, and center-pole is made relative traveling priority with barrel along center line, makes the testing sample in test chamber flow with layer flow mode under the effect of dragging of center-pole or barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103594972A CN103105347A (en) | 2011-11-14 | 2011-11-14 | Material viscosity testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103594972A CN103105347A (en) | 2011-11-14 | 2011-11-14 | Material viscosity testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103105347A true CN103105347A (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103594972A Pending CN103105347A (en) | 2011-11-14 | 2011-11-14 | Material viscosity testing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357973A (en) * | 2018-12-14 | 2019-02-19 | 沈阳建筑大学 | A kind of magnetorheological liquid viscosity test device and test method |
| CN109529679A (en) * | 2018-11-19 | 2019-03-29 | 刘新新 | Blood mixer is used in a kind of chemical examination of blood routine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60135746A (en) * | 1983-12-23 | 1985-07-19 | Lion Corp | Method for measuring process viscosity |
| US5005401A (en) * | 1990-02-12 | 1991-04-09 | Hughes Aircraft Company | Noncontact on-line measurement of the viscosity of liquid paint |
| CN101430267A (en) * | 2008-12-12 | 2009-05-13 | 湖南工业大学 | Test method and apparatus for rheological behavior of polymer composite material |
| CN101545844A (en) * | 2009-05-08 | 2009-09-30 | 哈尔滨工业大学 | Device for detecting rheological parameters of fresh mixed concrete |
| CN201319011Y (en) * | 2008-12-12 | 2009-09-30 | 湖南工业大学 | Test equipment for rheological properties of polymer composite material |
-
2011
- 2011-11-14 CN CN2011103594972A patent/CN103105347A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60135746A (en) * | 1983-12-23 | 1985-07-19 | Lion Corp | Method for measuring process viscosity |
| US5005401A (en) * | 1990-02-12 | 1991-04-09 | Hughes Aircraft Company | Noncontact on-line measurement of the viscosity of liquid paint |
| CN101430267A (en) * | 2008-12-12 | 2009-05-13 | 湖南工业大学 | Test method and apparatus for rheological behavior of polymer composite material |
| CN201319011Y (en) * | 2008-12-12 | 2009-09-30 | 湖南工业大学 | Test equipment for rheological properties of polymer composite material |
| CN101545844A (en) * | 2009-05-08 | 2009-09-30 | 哈尔滨工业大学 | Device for detecting rheological parameters of fresh mixed concrete |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529679A (en) * | 2018-11-19 | 2019-03-29 | 刘新新 | Blood mixer is used in a kind of chemical examination of blood routine |
| CN109357973A (en) * | 2018-12-14 | 2019-02-19 | 沈阳建筑大学 | A kind of magnetorheological liquid viscosity test device and test method |
| CN109357973B (en) * | 2018-12-14 | 2023-12-26 | 沈阳建筑大学 | Magnetorheological fluid viscosity testing device and testing method |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Yugang Inventor after: Liu Yuejun Inventor before: Huang Yugang |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: HUANG YUGANG TO: HUANG YUGANG LIU YUEJUN |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130515 |