CN107907447A - The parallel plate fixtures of rotational rheometer - Google Patents
The parallel plate fixtures of rotational rheometer Download PDFInfo
- Publication number
- CN107907447A CN107907447A CN201711032299.9A CN201711032299A CN107907447A CN 107907447 A CN107907447 A CN 107907447A CN 201711032299 A CN201711032299 A CN 201711032299A CN 107907447 A CN107907447 A CN 107907447A
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- China
- Prior art keywords
- shaft
- flat plate
- upper flat
- lower tablet
- rotational rheometer
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- 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
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
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- 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)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention relates to a kind of parallel plate fixtures of rotational rheometer, with the upper flat plate being parallel to each other and lower tablet, the lower plate center is fixed with the shaft rotated clockwise, through fixed upper flat plate center in shaft, the shaft and upper flat plate clearance fit, the rotation axis drive shaft of rheometer rotate and drive lower tablet rotation.The present invention is coaxial due to upper flat plate and lower tablet, concentricity is higher between two plates, relative to traditional rotational rheometer, the depth of parallelism is readily obtained guarantee between the upper and lower tablet of the present invention, rod-climbing effect caused by normal stress difference when parallelism precision far above traditional rotational rheometer, while in shaft there is shallow thread can be tested with partial offset, so as to preferably improve test shear rate, test scope is expanded, optimizes test result.
Description
Technical field
The present invention relates to rheology technical field of measurement and test, especially a kind of parallel plate fixtures of rotational rheometer.
Background technology
The parallel plate fixtures of traditional rotational rheometer are generally divided into upper plate and lower plate, the shearing speed between two plates suffered by material
Rate=R ω/H, wherein R are the radius of swivel plate, and spacing of the H between two plates, ω is the angular speed of swivel plate.Traditional rotation
The upper plate and lower plate of rheometer are separated, so when two plate spacings are larger, such as H=1mm, parallelism error δ=10 μm=
0.01mm, δ are smaller relative to H, δ=0.01H, and this error can be ignored, and influence very little for test.If expect
Larger shear rate is, it is necessary to set H value very littles, such as H=0.1mm, but since the parallelism error between two plates is larger, the μ of δ=10
M=0.01mm, then δ=0.1H, so big parallelism error influence whether test result.So limit shear rate
Improve, i.e., traditional rotational rheometer can only test the rheological parameter under low shear rate.
The content of the invention
The technical problem to be solved in the present invention is：In order to overcome deficiency in the prior art, the present invention provides a kind of rotation
The parallel plate fixtures of rheometer, it, to improve test shear rate, is expanded and surveyed by the parallelism error between reducing upper and lower plates
Try scope, optimal inspection result.
The technical solution adopted by the present invention to solve the technical problems is：A kind of parallel plate fixtures of rotational rheometer, tool
There are the upper flat plate being parallel to each other and lower tablet, the lower plate center is fixed with the shaft rotated clockwise, is passed through in shaft
Fixed upper flat plate center, the shaft and upper flat plate clearance fit, having in the shaft can partial offset test normal direction
The shallow thread of rod-climbing effect caused by stress difference, the rotation axis drive shaft of rheometer rotate and drive lower tablet rotation.
The lower tablet radius can be equal with upper flat plate, can also be more than upper flat plate radius.
Effect is tested to improve, having in the shaft can rod-climbing effect caused by partial offset test normal stress difference
Shallow thread.
Stainless steel, titanium alloy, duralumin or copper can be selected in the upper flat plate and the material of lower tablet.
The beneficial effects of the invention are as follows：The present invention is since upper flat plate and lower tablet are coaxial, and concentricity is higher between two plates, phase
For traditional rotational rheometer, the depth of parallelism is readily obtained guarantee between upper and lower tablet of the invention, and parallelism precision is far above biography
Unite rotational rheometer, while there is pole-climbing caused by normal stress difference of shallow thread when can be tested with partial offset to imitate in shaft
Should, so as to preferably improve test shear rate, test scope is expanded, optimizes test result.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structure diagram of the present invention.
In figure：1. 2. times tablets of upper flat plate, 3. shaft, 4. shallow thread
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows composition related to the present invention.
A kind of parallel plate fixtures of rotational rheometer as shown in Figure 1, have the upper flat plate 1 being parallel to each other and lower tablet 2,
2 radius of lower tablet is equal to or more than 1 radius of upper flat plate.
2 center of lower tablet is fixed with the shaft 3 rotated clockwise, is passed through in shaft 3 in fixed upper flat plate 1
The heart, the shaft 3 and 1 clearance fit of upper flat plate, the rotation axis drive shaft 3 of rheometer rotate and drive lower tablet 2 to rotate.
There is shallow thread 4, in test process, in terms of overlook direction, when shaft 3 rotates clockwise band in the shaft 3
When dynamic lower tablet 2 rotates, pole-climbing caused by normal stress difference when can be tested with the rotating shallow thread 4 of shaft 3 with partial offset
Effect, is conducive to improve test effect.
During test, the shaft 3 for being fixed on lower tablet 2 is driven by the rotation axis of rheometer and is rotated, and then drives lower tablet 2
Rotation, the rotation axis of rheometer is equipped with torque sensor, to control rotation torque.As needed, which can be mounted in temperature control
Intracavitary, articles for use are protected without by high-temperature oxydation by nitrogen.Since upper flat plate 1 and lower tablet 2 are coaxial, between two plates concentricity compared with
Height, shaft 3 was both vertical with lower tablet 2, also vertical with upper flat plate 1, relative to traditional rotational rheometer, the parallel plate fixtures
The depth of parallelism between upper and lower tablet 1,2 is readily obtained guarantee, and parallelism precision is far above traditional rotational rheometer.For example, work as
When spacing between upper and lower tablet 1,2 is smaller (such as H=0.1mm), then the parallelism error δ between upper and lower tablet 1,2 is reachable
To 1 μm, that is, 0.001mm, error delta=0.01H, such shear rate can decuple shear rate during H=1mm.
Upper flat plate 1, the radius R of lower tablet 2 can be set as such as 15mm, 25mm, 40mm etc., upper flat plate 1, the material of lower tablet 2
Stainless steel or titanium alloy can be made, can also make duralumin, copper or other materials as needed.Between upper flat plate 1, lower tablet 2
Spacing it is adjustable, when test, selects as needed.
The present invention is improved on the basis of Conventional parallel plate jig rotational rheometer, and Conventional parallel tablet presss from both sides
The test philosophy of tool rotational rheometer stands good in the present invention, which is controlled by computer software, experimental data and curve
It can be handled by computer software record.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (3)
1. a kind of parallel plate fixtures of rotational rheometer, have the upper flat plate (1) and lower tablet (2) being parallel to each other, it is characterized in that：
Described lower tablet (2) center is fixed with the shaft (3) rotated clockwise, through in fixed upper flat plate (1) in shaft (3)
The heart, the shaft (3) and upper flat plate (1) clearance fit, having in the shaft (3) can partial offset test normal stress difference
The shallow thread (4) of caused rod-climbing effect, the rotation axis drive shaft (3) of rheometer rotate and drive lower tablet (2) rotation.
2. the parallel plate fixtures of rotational rheometer as claimed in claim 1, it is characterized in that：Described lower tablet (2) radius etc.
In or more than upper flat plate (1) radius.
3. the parallel plate fixtures of rotational rheometer as claimed in claim 1, it is characterized in that：The upper flat plate (1) and lower flat
Stainless steel, titanium alloy, duralumin or copper can be selected in the material of plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711032299.9A CN107907447A (en) | 2017-10-30 | 2017-10-30 | The parallel plate fixtures of rotational rheometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711032299.9A CN107907447A (en) | 2017-10-30 | 2017-10-30 | The parallel plate fixtures of rotational rheometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107907447A true CN107907447A (en) | 2018-04-13 |
Family
ID=61841977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711032299.9A Pending CN107907447A (en) | 2017-10-30 | 2017-10-30 | The parallel plate fixtures of rotational rheometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107907447A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388366A (en) * | 2001-05-25 | 2003-01-01 | 中国科学技术大学 | Test system for rheological characteristics of magnetic rheological liquid |
| CN2592265Y (en) * | 2002-12-31 | 2003-12-17 | 东华大学 | Mixer |
| US7444855B2 (en) * | 2006-06-22 | 2008-11-04 | Michelin Recherche Et Technique, S.A. | Orthogonal rheometer |
| CN101506640A (en) * | 2006-08-23 | 2009-08-12 | 巴斯夫欧洲公司 | Rheometer |
| CN102072848A (en) * | 2009-10-30 | 2011-05-25 | 安东帕有限责任公司 | Rheometer and rheometric method for testing samples |
| CN102998219A (en) * | 2012-12-24 | 2013-03-27 | 常州大学 | Cone plate-flat plate clamp of rotational rheometer |
-
2017
- 2017-10-30 CN CN201711032299.9A patent/CN107907447A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388366A (en) * | 2001-05-25 | 2003-01-01 | 中国科学技术大学 | Test system for rheological characteristics of magnetic rheological liquid |
| CN2592265Y (en) * | 2002-12-31 | 2003-12-17 | 东华大学 | Mixer |
| US7444855B2 (en) * | 2006-06-22 | 2008-11-04 | Michelin Recherche Et Technique, S.A. | Orthogonal rheometer |
| CN101506640A (en) * | 2006-08-23 | 2009-08-12 | 巴斯夫欧洲公司 | Rheometer |
| CN102072848A (en) * | 2009-10-30 | 2011-05-25 | 安东帕有限责任公司 | Rheometer and rheometric method for testing samples |
| CN102998219A (en) * | 2012-12-24 | 2013-03-27 | 常州大学 | Cone plate-flat plate clamp of rotational rheometer |
Non-Patent Citations (1)
| Title |
|---|
| 邓都都 等: "Fann 50SL流变仪测试高粘流体爬杆问题的机理研究及解决方法", 《探矿工程（岩土钻掘工程）》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180413 |