CN115308251B - Modularized synchronous detection device combined with low-field nuclear magnetic resonance spectrometer - Google Patents
Modularized synchronous detection device combined with low-field nuclear magnetic resonance spectrometer Download PDFInfo
- Publication number
- CN115308251B CN115308251B CN202211243620.9A CN202211243620A CN115308251B CN 115308251 B CN115308251 B CN 115308251B CN 202211243620 A CN202211243620 A CN 202211243620A CN 115308251 B CN115308251 B CN 115308251B
- Authority
- CN
- China
- Prior art keywords
- stretching
- driving
- test
- driving rod
- magnetic resonance
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention provides a modularized synchronous detection device used with a low-field nuclear magnetic resonance spectrometer, which relates to the technical field of detection devices and comprises a driving mechanism arranged on the low-field nuclear magnetic resonance spectrometer through a positioning mechanism; the transmission mechanism comprises a driving rod which partially penetrates through the positioning mechanism so as to slide back and forth along a first direction under the driving of the driving mechanism; the force sensor is arranged between the driving rod and the driving mechanism to detect the force applied to the driving rod; the test module detachably arranged at one end of the transmission mechanism opposite to the force sensor comprises a first test component for compressing a tested sample under a closed working condition, a second test component for stretching the tested sample under the closed working condition and a third test component for stretching the tested sample under a liquid seal working condition; when a tested sample is subjected to a tensile test or a compression test in the test module, the force sensor acquires stress data, and the low-field nuclear magnetic resonance spectrometer acquires nuclear magnetic resonance data so as to detect the tested sample.
Description
Technical Field
The invention relates to the technical field of detection devices, in particular to a modularized synchronous detection device used with a low-field nuclear magnetic resonance spectrometer.
Background
The high polymer material is subjected to external force field during the forming and service processes, such as injection molding, extrusion, blow molding and the like, and is subjected to flowing field during the forming and service processes, and is often used as a bearing structure and is also subjected to force field during the service process. Under the action of the force field, the microstructure and dynamics of the high polymer material are changed rapidly, and the microstructure and dynamics directly influence the service performance of the high polymer material. In order to improve the service performance of the high polymer material, the microstructure and dynamic evolution process of the high polymer material need to be confirmed.
The in-situ detection method and the in-situ detection device for the service process of the high polymer material are mainly concentrated in the characterization fields of X-ray scattering, infrared/Raman spectrum, microscopes and the like. However, working conditions in the processing and service processes of the polymer material are often complex, and various deformation mode processes such as uniaxial stretching, multiaxial stretching, compression, shearing and the like exist under the action of an external force field. In addition, for some special functional films, such as PVA films that can be used as polarizers, it is necessary to wet and iodine dye in boric acid solution and iodine solution, respectively, during the solution casting process. In order to be more close to the actual industrial processing process of the high polymer material, the in-situ detection equipment is required to have the information of the structure and dynamic evolution process of the high polymer material under different working conditions. Therefore, in the processing and service process of the high polymer material, the difficulty in detecting the microstructure and dynamic evolution process of the high polymer material is great.
Disclosure of Invention
Aiming at the prior art, the invention provides a modularized synchronous detection device combined with a low-field nuclear magnetic resonance spectrometer, wherein a force sensor acquires stress change data of a driving rod in the tensile or compression test process of a tested sample in test modules with different working conditions, and the low-field nuclear magnetic resonance spectrometer synchronously acquires nuclear magnetic resonance data of the tested sample so as to acquire evolution process information of the material structure of the tested sample along with the stress change.
The embodiment of the invention provides a modularized synchronous detection device used with a low-field nuclear magnetic resonance spectrometer, which comprises the following components:
the positioning mechanism is arranged on the low-field nuclear magnetic resonance spectrometer;
the driving mechanism is arranged on the positioning mechanism;
a transmission mechanism including a driving rod partially penetrating the positioning mechanism to reciprocate linearly relative to the positioning mechanism in a first direction under the driving of the driving mechanism;
a force sensor installed between the driving rod and the driving mechanism to detect a force applied to the driving rod by the driving mechanism; and
the test module comprises a first test component, a second test component and a third test component, wherein the first test component, the second test component and the third test component are detachably arranged at one end of the transmission mechanism opposite to the force sensor, the first test component is suitable for carrying out compression test on a tested sample under a closed working condition under the driving of the driving rod, the second test component is suitable for carrying out tensile test on the tested sample under the closed working condition under the driving of the driving rod, and the third test component is suitable for carrying out tensile test on the tested sample under a liquid sealing working condition under the driving of the driving rod; the method comprises the steps of carrying out a first treatment on the surface of the
In the tensile or compression test process of the tested sample in the test module, the force sensor acquires stress change data of the driving rod, and the low-field nuclear magnetic resonance spectrometer acquires nuclear magnetic resonance data of the tested sample so as to acquire evolution process information of the material structure of the tested sample along with the stress change.
According to an embodiment of the present invention, the transmission mechanism includes:
the first end of the transition sleeve is detachably arranged on the positioning mechanism; and
and the first end of the guide pipe is connected with the second end of the transition sleeve, the second end of the guide pipe is connected with the test module, the driving rod slidably penetrates through the transition sleeve and the guide pipe, the first end of the driving rod is connected with the force sensor, and the second end of the driving rod is connected with the test module.
According to an embodiment of the present invention, the transmission mechanism further includes:
the clamp sleeve is arranged at the first end of the transition sleeve, and a plurality of clamping claws are arranged at one end of the clamp sleeve, which is far away from the transition sleeve; and
the self-locking sleeve is sleeved outside the clamp sleeve, the first end of the self-locking sleeve is in threaded connection with the first end of the transition sleeve, the first end of the driving rod penetrates through the self-locking sleeve and the clamp sleeve and is connected with the force sensor, the second end of the driving rod is connected with the test module, a conical hole is formed in the self-locking sleeve, the self-locking sleeve is screwed in the direction of the transition sleeve, and the conical hole extrudes a plurality of clamping claws, so that the clamping claws are close to the driving rod and lock the driving rod, and the driving rod and the fixed sleeve are prevented from sliding relatively.
According to an embodiment of the present invention, the first test assembly includes:
a compression outer tube detachably mounted at the second end of the guide tube; and
and the compression sliding block is detachably arranged at the second end of the driving rod, and is driven by the driving rod to slide along the first direction so as to compress a tested sample arranged at the bottom of the compression outer tube for compression test.
According to an embodiment of the present invention, the second test assembly includes:
a conventional stretched outer tube detachably mounted to the second end of the guide tube;
a conventional stretching slider detachably mounted at the second end of the driving rod, and driven by the driving rod, so that the conventional stretching slider slides along the first direction; and
and the first stretching assembly is arranged between the bottom of the conventional stretching outer tube and the conventional stretching sliding block, the middle part of the first stretching assembly is suitable for placing a tested sample, and the first stretching assembly stretches the tested sample along the first direction in the process that the conventional stretching sliding block moves towards the bottom far away from the conventional stretching outer tube.
According to an embodiment of the present invention, the third test assembly includes:
a sealed stretching outer tube detachably mounted at the second end of the guide tube, wherein a liquid injection port is arranged on the sealed stretching outer tube and is suitable for filling test solution into the sealed stretching outer tube;
the airtight stretching slide block is detachably arranged at the second end of the driving rod, and the airtight stretching slide block slides along the first direction under the driving of the driving rod; and
and the second stretching assembly is arranged between the bottom of the airtight stretching outer tube and the airtight stretching sliding block, the middle part of the second stretching assembly is suitable for placing a tested sample, and the second stretching assembly stretches the tested sample along the first direction for a stretching test in the process that the airtight stretching sliding block moves towards the bottom far away from the airtight stretching outer tube.
According to an embodiment of the present invention, each of the first stretching assembly and the second stretching assembly includes:
the first pull rod is arranged at the bottom of the conventional stretching outer tube or the airtight stretching outer tube; and
the second pull rod is arranged on the conventional stretching slide block or the airtight stretching slide block;
wherein the first pull rod and the second pull rod extend along a first direction, a first clamp and a second clamp are respectively installed at one ends of the first pull rod and the second pull rod facing each other, and the first clamp and the second clamp are suitable for clamping a sample to be tested.
According to an embodiment of the present invention, the driving mechanism includes:
a housing mounted on the positioning mechanism, wherein a slide rail extending along the first direction is arranged on the housing;
a driving motor mounted on the housing;
the screw rod extends along the first direction, is arranged on the driving motor and rotates under the driving of the driving motor; and
the adapting block is in threaded connection with the screw rod and can be arranged in the sliding rail in a sliding way, the sliding rail prevents the adapting block from rotating relative to the shell under the driving of the screw rod, so that the adapting block moves back and forth along the screw rod, and the force sensor is arranged on the adapting block.
According to an embodiment of the present invention, the positioning mechanism includes:
the base is arranged on the low-field nuclear magnetic resonance spectrometer; and
a guide tube mounted on the base and extending in the first direction so that a guide rod of the housing is inserted into the guide tube;
wherein, the guide rod is rotatably provided with a positioning sleeve, and the guide pipe is in threaded connection with the positioning sleeve;
the base is provided with a fixing clamping seat and comprises:
the first anchor ear is arranged on the base;
the second anchor ear is arranged opposite to the first anchor ear; and
the locking bolt penetrates through the first anchor ear and the second anchor ear, so that the first anchor ear and the second anchor ear clamp and fix the transition sleeve.
According to the embodiment of the invention, the photoelectric sensor is arranged on the adapting block and is suitable for acquiring the position information of the adapting block.
According to the modularized synchronous detection device used with the low-field nuclear magnetic resonance spectrometer, provided by the invention, the compression test is carried out on the tested sample in the process that the driving rod slides towards the test module along the first direction under the driving of the driving mechanism, the tensile test is carried out on the tested sample in the process that the driving rod slides away from the test module along the first direction, meanwhile, the force sensor acquires the stress change data of the driving rod, and the low-field nuclear magnetic resonance spectrometer synchronously acquires the nuclear magnetic resonance data of the tested sample so as to acquire the evolution process information of the material structure of the tested sample along with the stress change; the test module is convenient to assemble, disassemble and replace, different test modules are selected according to the tested sample, the effect of detecting the tested sample under different working conditions is achieved, and the microstructure and dynamic evolution process of the high polymer material can be performed in real time in the processing and service process of the high polymer material.
Drawings
FIG. 1 is a schematic perspective view of a modular synchronous detection device for use with a low field nuclear magnetic resonance spectrometer in accordance with an embodiment of the present invention;
FIG. 2 is a partial schematic view of a modular synchronous detection device for use with a low field nuclear magnetic resonance spectrometer in accordance with an embodiment of the present invention;
FIG. 3 is a partial schematic view of a highlighting positioning mechanism of a modular synchronous detection device for use with a low field nuclear magnetic resonance spectrometer according to an embodiment of the present invention;
FIG. 4 is a partial schematic view of a highlighting drive mechanism of a modular sync detection device for use with a low field nuclear magnetic resonance spectrometer according to an embodiment of the present invention;
FIG. 5 is a partial schematic view of a highlighting force sensor of a modular synchronization detecting device for use with a low field nuclear magnetic resonance spectrometer in accordance with an embodiment of the present invention;
FIG. 6 is an exploded schematic view of a highlighting drive mechanism of a modular synchronous detection device for use with a low field nuclear magnetic resonance spectrometer in accordance with an embodiment of the present invention;
FIG. 7 is a partial schematic illustration of a first test component highlighted for a modular synchronous detection apparatus for use with a low field nuclear magnetic resonance spectrometer in accordance with an embodiment of the present invention;
FIG. 8 is a partial schematic view of a highlighted second test assembly of a modular synchronous detection apparatus for use with a low field nuclear magnetic resonance spectrometer according to an embodiment of the present invention;
FIG. 9 is a partially exploded schematic illustration of a highlighting second test assembly of a modular synchronous detection apparatus for use with a low-field nuclear magnetic resonance spectrometer in accordance with an embodiment of the present invention;
FIG. 10 is a partial schematic diagram of a third test assembly highlighted for a modular sync detection apparatus for use with a low field nuclear magnetic resonance spectrometer according to an embodiment of the present invention.
Reference numerals
1. A low field nuclear magnetic resonance spectrometer; 2. a positioning mechanism; 21. a base; 22. a guide tube; 23. a fixing clamp seat; 231. the first hoop; 232. the second hoop; 233. a locking bolt; 3. a driving mechanism; 31. a housing; 311. a slide rail; 312. a guide rod; 313. positioning a sleeve; 32. a driving motor; 33. a screw rod; 34. an adaptation block; 35. a photoelectric sensor; 4. a transmission mechanism; 41. a driving rod; 42. a transition sleeve; 43. a guide tube; 44. a clamp sleeve; 441. a claw; 45. a self-locking sleeve; 451. a tapered bore; 5. a test module; 6. a first test assembly; 61. compressing the outer tube; 62. a compression slider; 7. a second test assembly; 71. stretching the outer tube conventionally; 711. a first half pipe; 712. a second half pipe; 72. a conventional stretching slide block; 73. a first stretching assembly; 731. a first pull rod; 732. a second pull rod; 733. a first clamp; 734. a second clamp; 8. a third test assembly; 81. hermetically stretching the outer tube; 811. a liquid injection port; 82. sealing and stretching the sliding block; 83. a second stretching assembly; 9. a force sensor.
Detailed Description
The present invention will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
Descriptions of structural embodiments and methods of the present invention are disclosed herein. It is to be understood that there is no intention to limit the invention to the particular disclosed embodiments, but that the invention may be practiced using other features, elements, methods and embodiments. Like elements in different embodiments are generally referred to by like numerals. As shown in fig. 1, 2 and 5, the embodiment of the invention provides a modularized synchronous detection device used with a low-field nuclear magnetic resonance spectrometer, which comprises a low-field nuclear magnetic resonance spectrometer 1, a positioning mechanism 2, a driving mechanism 3, a transmission mechanism 4, a force sensor 9 and a test module 5.
The positioning mechanism 2 is arranged on the low-field nuclear magnetic resonance spectrometer 1; the driving mechanism 3 is arranged on the positioning mechanism 2; the transmission mechanism 4 includes a driving rod 41, and the driving rod 41 partially passes through the positioning mechanism 2 to reciprocate linearly in a first direction relative to the positioning mechanism 2 under the driving of the driving mechanism 3; the force sensor 9 is installed between the driving lever 41 and the driving mechanism 3 to detect a force applied to the driving lever 41 by the driving mechanism 3. The test module 5 comprises a first test component 6, a second test component 7 and a third test component 8 which are detachably arranged at one end of the transmission mechanism 4 opposite to the force sensor 9, and as shown in fig. 7, the first test component 6 is suitable for carrying out compression test on a tested sample under the closed working condition under the driving of the driving rod 41; as shown in fig. 8 and 9, the second test component 7 is suitable for performing a tensile test on a tested sample under a closed working condition under the driving of the driving rod 41; as shown in fig. 10, the third test assembly 8 is adapted to perform a tensile test on a sample under test under a liquid-tight condition by driving the driving rod 41. In the tensile or compression test process of the tested sample in the test module 5, the force sensor 9 acquires the stress change data of the driving rod 41, and the low-field nuclear magnetic resonance spectrometer 1 acquires the nuclear magnetic resonance data of the tested sample so as to acquire the evolution process information of the material structure of the tested sample along with the stress change.
According to the modularized synchronous detection device used with the low-field nuclear magnetic resonance spectrometer provided by the embodiment, a tested sample is placed in the test module 5, the tested sample is subjected to a compression test in the process that the driving rod 41 slides towards the test module 5 along the first direction under the driving of the driving mechanism 3, the tested sample is subjected to a tensile test in the process that the driving rod 41 slides away from the test module 5 along the first direction, meanwhile, the force sensor 9 acquires the stress change data of the driving rod 41, and the low-field nuclear magnetic resonance spectrometer 1 synchronously acquires the nuclear magnetic resonance data of the tested sample so as to acquire the evolution process information of the material structure of the tested sample along with the stress change; the test module is convenient to assemble, disassemble and replace, different test modules are selected according to the tested sample, the effect of detecting the tested sample under different working conditions is achieved, and the microstructure and dynamic evolution process of the high polymer material can be performed in real time in the processing and service process of the high polymer material. In an exemplary embodiment, as shown in fig. 1 and 3, the positioning mechanism 2 includes a base 21 and a guide tube 22. The base 21 is arranged on the low-field nuclear magnetic resonance spectrometer 1; the guide tube 22 is installed at the top of the base 21 and extends in a first direction, which is a vertical direction. Four guide pipes 22 are arranged and evenly distributed at intervals around the central axis of the base 21, so that the balance of the base 21 is improved.
In an exemplary embodiment, as shown in fig. 3 and 4, the driving mechanism 3 includes a housing 31, a driving motor 32, a screw 33, and an adapter block 34. A guide rod 312 is installed at the bottom of the housing 31 facing the guide tube 22, the guide rod 312 is inserted into the guide tube 22, a positioning sleeve 313 is rotatably installed on the guide rod 312, and the guide tube 22 is in threaded connection with the positioning sleeve 313. In the process of inserting the guide rod 312 into the guide tube 22, the guide tube 22 guides the guide rod 312, so that the driving mechanism 3 can be coaxial when being arranged on the positioning mechanism 2, the accuracy of the installation of the driving mechanism 3 is improved, and the error of a stretching or compression test is reduced.
A slide rail 311 extending in the first direction is provided in the housing 31; the driving motor 32 is installed at the top of the housing 31, and the driving motor 32 is a servo motor in this embodiment; the screw 33 extends in the first direction and is mounted on the output shaft of the drive motor 32 through a coupling so that the screw is rotated by the drive motor 32. The adapter block 34 is in threaded connection with the screw rod 33 and can be slidably arranged in the sliding rail 311, the sliding rail 311 prevents the adapter block 34 from rotating relative to the shell 31 under the rotation driving of the screw rod 33, so that the adapter block 34 reciprocates along the screw rod 33, displacement and speed of the movement of the adapter block are controlled by controlling the rotation speed and the rotation angle of the driving motor 32, and the speed range is 0.001mm/s-1mm/s.
In an exemplary embodiment, as shown in fig. 4, a photoelectric sensor 35 is further disposed on the adapting block 34, and is adapted to obtain position information of the adapting block 34, so as to locate a spatial position of the adapting block 34, so as to perform anti-collision protection on the adapting block 34.
According to the modularized synchronous detection device for use with the low-field nuclear magnetic resonance spectrometer provided by the embodiment, after the driving mechanism 3 is started, the driving motor 32 drives the screw rod to rotate, and the sliding rail 311 prevents the adapting block 34 from rotating relative to the shell 31, so that the adapting block 34 moves back and forth along the screw rod 33 and the sliding rail 311 in the first direction.
In an exemplary embodiment, as shown in fig. 3 and 4, a fixing clip seat 23 is provided on the base 21, and includes a first anchor ear 231, a second anchor ear 232, and a locking bolt 233. The first anchor ear 231 is mounted on the base 21; the second anchor ear 232 is arranged opposite to the first anchor ear 231; the locking bolt 233 passes through the first anchor ear 231 and the second anchor ear 232 to lock and fix the first anchor ear 231 and the second anchor ear 232. In an exemplary embodiment, as shown in fig. 5 and 6, the force sensor 9 is screwed to the bottom of the slider. The transmission mechanism 4 comprises a driving rod 41, a transition sleeve 42, a guide tube 43, a clamp sleeve 44 and a self-locking sleeve 45, the driving rod 41 extends along a first direction, a first end of the driving rod 41 is in threaded connection with the bottom of the force sensor 9, a second end of the driving rod 41 is connected with the test module 5, and the driving rod 41 partially penetrates between the first anchor ear 231 and the second anchor ear 232 to slide linearly along with the sliding block in the first direction relative to the positioning mechanism 2 under the driving of the driving mechanism 3, as shown in fig. 3.
The first end of the transition sleeve 42 is placed between the first and second anchor ears 231, 232, and the locking bolt 233 is tightened so that the first and second anchor ears 231, 232 clamp the transition sleeve, and the drive rod 41 slidably passes through the transition sleeve 42. The first end of the guide tube 43 is connected with the second end of the transition sleeve 42, the second end of the guide tube 43 is connected with the test module 5, the driving rod 41 slidably penetrates through the guide tube 43, the guide tube 43 is made of zirconia ceramics or polytetrafluoroethylene, and interference to signals of the low-field nuclear magnetic resonance spectrometer 1 is reduced.
The clamp sleeve 44 is mounted to a first end of the transition sleeve 42, and a plurality of clamping jaws 441 are mounted to an end of the clamp sleeve 44 remote from the transition sleeve 42, the plurality of clamping jaws 441 being uniformly spaced about an axis of the clamp sleeve 44, and the drive rod 41 slidably passing through the clamp sleeve 44. The self-locking sleeve 45 is sleeved outside the clamp sleeve 44, the first end of the self-locking sleeve 45 is in threaded connection with the first end of the transition sleeve 42, a conical hole 451 is formed in the self-locking sleeve 45, and in the screwing process of the self-locking sleeve 45 towards the transition sleeve 42, the conical hole 451 extrudes the plurality of clamping claws 441, so that the plurality of clamping claws 441 draw close to the driving rod 41 and lock the driving rod 41, and the driving rod 41 and the fixed sleeve are prevented from sliding relatively.
According to the modularized synchronous detection device used with the low-field nuclear magnetic resonance spectrometer provided by the embodiment, the driving rod 41 moves along the first direction along with the movement of the sliding block, and the transition sleeve 42 and the guide tube 43 guide the movement of the driving rod 41, so that a tested sample can be subjected to a tensile or compression test in the test module 5. When the driving rod 41 needs to be locked during or after the test is finished so as to maintain the force application state of the driving rod 41 to the tested sample, the self-locking sleeve 45 is screwed towards the transition sleeve 42, the conical holes 451 of the self-locking sleeve 45 squeeze the plurality of clamping claws 441 to enable the plurality of clamping claws 441 to be close to the driving rod 41 and lock the driving rod 41 so as to prevent the driving rod 41 and the fixed sleeve from sliding relatively, and therefore the driving rod 41 is locked so as to maintain the force application state of the driving rod 41 to the tested sample. In one exemplary embodiment, as shown in FIG. 7, the first test assembly 6 includes a compression outer tube 61 and a compression slider 62. The compression outer tube 61 is detachably mounted on the second end of the guide tube 43, and the compression outer tube 61 is in threaded connection with the guide tube 43 in this embodiment; the compression slider 62 is detachably mounted on the second end of the driving rod 41, in this embodiment, the compression slider 62 is screwed with the driving rod 41, and the compression slider 62 may be connected with the driving rod 41 by a bolt or a clip. The compression slider 62 slides in the first direction under the drive of the drive lever 41 to compress the sample to be tested placed at the bottom of the compression outer tube 61 for compression test.
In an exemplary embodiment, the end of the compression outer tube 61 remote from the guide tube 43 is threaded with a cap that seals the end of the compression outer tube 61. The nut is convenient to detach, and the convenience of cleaning the compression outer tube 61 is improved.
According to the modularized synchronous detection device combined with the low-field nuclear magnetic resonance spectrometer provided by the embodiment, when a compression test is performed on a detected sample, the detected sample is placed at the bottom of the compression outer tube 61, and the screw is driven by the driving motor 32 to rotate, so that the adapter block 34, the driving rod 41 and the compression sliding block 62 are driven to move along the first direction towards the direction close to the compression outer tube 61, the compression sliding block 62 compresses the detected sample placed at the bottom of the compression outer tube 61 for the compression test, at the moment, the force sensor 9 acquires stress change data of the driving rod 41, the low-field nuclear magnetic resonance spectrometer 1 synchronously acquires nuclear magnetic resonance data of the detected sample, so that evolution process information of the material structure of the detected sample along with the stress change can be obtained, and the microstructure and dynamic evolution process of the high-molecular material can be detected in real time in the compression test process. In one exemplary embodiment, as shown in fig. 8 and 9, when the tested sample is subjected to a tensile test, it is replaced with a second test assembly 7, and the second test assembly 7 includes a conventional tensile outer tube 71, a conventional tensile slider 72, and a first tensile assembly 73. The conventional drawn outer tube 71 is detachably mounted at the second end of the guide tube 43, the conventional drawn outer tube 71 includes a first half tube 711 and a second half tube 712, the first half tube 711 and the second half tube 712 are disposed opposite each other in the first direction, and the first half tube 711 and the second half tube 712 are combined by bolts to form the conventional drawn outer tube 71; the conventional stretching slider 72 is detachably mounted at the second end of the driving rod 41, and the conventional stretching slider 72 slides along the first direction under the driving of the driving rod 41; the first stretching assembly 73 is installed between the bottom of the conventional stretching outer tube 71 and the conventional stretching slider 72, and the middle portion of the first stretching assembly 73 is adapted to place a sample to be tested, and the first stretching assembly 73 stretches the sample to be tested in a first direction during the movement of the conventional stretching slider 72 away from the bottom of the conventional stretching outer tube 71.
According to the modularized synchronous detection device for use with the low-field nuclear magnetic resonance spectrometer provided by the embodiment, when a sample to be detected is placed in the first stretching assembly 73, the bolts are unscrewed, the first half pipe 711 is separated from the second half pipe 712, then the sample to be detected is placed in the middle of the first stretching assembly 73, then the first half pipe 711 and the second half pipe 712 are fixed by the bolts, and the conventional stretching outer pipe 71 is in threaded connection with the second end of the guiding pipe 43, so that the sample to be detected is placed. In an exemplary embodiment, when the sample to be measured is a special function film, for example, a PVA film that can be used as a polarizer, it is necessary to perform immersion and iodine dyeing in a boric acid solution and an iodine solution, respectively, during the solution casting process. When the sample to be tested is subjected to a tensile test in a solution, the sample to be tested is replaced with a third test module 8, and as shown in fig. 10, the third test module 8 includes a sealed tensile outer tube 81, a sealed tensile slider 82, and a second tensile module 83. The sealed stretching outer tube 81 is detachably arranged at the second end of the guide tube 43, a screw cap is connected with the bottom end of the sealed stretching outer tube 81 in a threaded manner, the screw cap is convenient to assemble and disassemble, a tested sample is convenient to install, a liquid injection port 811 is formed in the sealed stretching outer tube 81, the sealed stretching outer tube 81 is suitable for filling test solution into the sealed stretching outer tube 81, and then the liquid injection port is plugged by using polytetrafluoroethylene jackscrews to prevent liquid from overflowing; the airtight stretching slider 82 is detachably mounted on the second end of the driving rod 41, and the airtight stretching slider 82 slides along the first direction under the driving of the driving rod 41. The second stretching assembly 83 is located in the airtight stretching outer tube 81 and is installed between a nut of the airtight stretching outer tube 81 and the airtight stretching sliding block 82, the middle portion of the second stretching assembly 83 is suitable for placing a tested sample, and in the process that the airtight stretching sliding block 82 moves towards the bottom far away from the airtight stretching outer tube 81, the second stretching assembly 83 stretches the tested sample along the first direction to perform a stretching test.
In one exemplary embodiment, as shown in fig. 9 and 10, each of the first and second stretching assemblies 73 and 83 includes a first pull rod 731, a second pull rod 732, a first clamp 733, and a second clamp 734. The first pull rod 731 is installed in a clamping groove at the bottom of the conventional stretching outer tube 71 or the airtight stretching outer tube 81; the second pull rod 732 is mounted to either the conventional stretch slider 72 or the closed stretch slider 82; wherein the first and second tie bars 731 and 732 extend in the first direction, and first and second clamps 733 and 734 are respectively mounted to opposite ends of the first and second tie bars 731 and 732, respectively, the first and second clamps 733 and 734 being adapted to clamp a sample to be measured.
According to the modularized synchronous detection device combined with the low-field nuclear magnetic resonance spectrometer provided by the embodiment, when a tensile test is performed on a detected sample, the detected sample is placed at the first clamp 733 and the second clamp 734, the screw is driven by the driving motor 32 to rotate, so that the adapter block 34 and the driving rod 41 are driven to move upwards along the first direction, the driving rod 41 drives the conventional stretching slide block 72 or the airtight stretching slide block 82 to move, so that the first pull rod 731 and the first clamp 733 are driven to move upwards, the first clamp 733 and the second clamp 734 are far away from each other, the detected sample generates uniaxial deformation to perform the tensile test, at this time, the force sensor 9 acquires stress change data of the driving rod 41, and the low-field nuclear magnetic resonance spectrometer 1 synchronously acquires nuclear magnetic resonance data of the detected sample to acquire evolution process information of the material structure of the detected sample along with the stress change, and the microstructure and dynamic evolution process of the high-molecular material can be detected in real time in the tensile test process.
According to the modularized synchronous detection device used with the low-field nuclear magnetic resonance spectrometer provided by the embodiment, when a compression or tensile test is performed on a detected sample, the detected sample is placed in the test module 5, the compression test is performed on the detected sample in the process that the driving rod 41 slides towards the test module 5 along the first direction under the driving of the driving mechanism 3, the tensile test is performed on the detected sample in the process that the driving rod 41 slides away from the test module 5 along the first direction, meanwhile, the force sensor 9 acquires the stress change data of the driving rod 41, and the low-field nuclear magnetic resonance spectrometer 1 synchronously acquires the nuclear magnetic resonance data of the detected sample so as to acquire the evolution process information of the material structure of the detected sample along with the stress change; the test module is convenient to assemble, disassemble and replace, different test modules are selected according to the tested sample, the effect of detecting the tested sample under different working conditions is achieved, and the microstructure and dynamic evolution process of the high polymer material can be performed in real time in the processing and service process of the high polymer material.
While the foregoing embodiments have been described in some detail for purposes of clarity of understanding, it will be appreciated that the invention is not limited to the specific embodiments described above, but is to be accorded the full scope of the invention as defined by the appended claims.
Claims (8)
1. A modular synchronous detection device for use with a low field nuclear magnetic resonance spectrometer, comprising:
positioning mechanism (2), install in low field nuclear magnetic resonance spectrometer (1), positioning mechanism (2) include: the guide tube (22) is arranged on the base (21) and extends along a first direction, and the first direction is a vertical direction, so that a guide rod (312) of the shell (31) is inserted into the guide tube (22);
wherein, the guide rod (312) is rotatably provided with a positioning sleeve (313), and the guide tube (22) is in threaded connection with the positioning sleeve (313); the base (21) is provided with a fixing clamp seat (23), and the fixing clamp seat (23) comprises: the locking device comprises a first anchor ear (231), a second anchor ear (232) and a locking bolt (233), wherein the first anchor ear (231) and the second anchor ear (232) are symmetrically arranged on a base (23), and the locking bolt (233) penetrates through the first anchor ear (231) and the second anchor ear (232);
a driving mechanism (3) mounted on the positioning mechanism (2);
the transmission mechanism (4) is arranged on the positioning mechanism (2) and the driving mechanism (3), and comprises:
-a driving rod (41), said driving rod (41) passing partially through said positioning mechanism (2) to slide reciprocally and linearly in a first direction with respect to said positioning mechanism (2) under the drive of said driving mechanism (3);
a transition sleeve (42), a first end of the transition sleeve (42) being detachably mounted to the positioning mechanism (2); and
a force sensor (9) installed between the driving lever (41) and the driving mechanism (3) to detect a force applied by the driving mechanism (3) to the driving lever (41); and
the test module (5) comprises a first test component (6), a second test component (7) and a third test component (8) which are detachably arranged at one end of the transmission mechanism (4) opposite to the force sensor (9), wherein the first test component (6) is suitable for carrying out compression test on a tested sample under a closed working condition under the driving of the driving rod (41), the second test component (7) is suitable for carrying out tensile test on the tested sample under the closed working condition under the driving of the driving rod (41), and the third test component (8) is suitable for carrying out tensile test on the tested sample under the liquid sealing working condition under the driving of the driving rod (41);
-a guiding tube (43), a first end of the guiding tube (43) being connected to a second end of the transition sleeve (42), a second end of the guiding tube (43) being detachably connected to the test module (5), the driving rod (41) slidably passing through the transition sleeve (42) and the guiding tube (43), and a first end of the driving rod (41) being connected to the force sensor (9), a second end of the driving rod (41) being detachably connected to the test module (5);
in the tensile or compression test process of the tested sample in the test module (5), the force sensor (9) acquires stress change data of the driving rod (41), and the low-field nuclear magnetic resonance spectrometer (1) acquires nuclear magnetic resonance data of the tested sample to acquire evolution process information of the material structure of the tested sample along with the stress change.
2. The modular synchronous detection device for use with a low field nuclear magnetic resonance spectrometer according to claim 1, wherein the transmission mechanism (4) further comprises:
a clamp sleeve (44) mounted at a first end of the transition sleeve (42), wherein a plurality of clamping claws (441) are mounted at one end of the clamp sleeve (44) away from the transition sleeve (42); and
the self-locking sleeve (45) is sleeved outside the clamp sleeve (44), the first end of the self-locking sleeve (45) is in threaded connection with the first end of the transition sleeve (42), the first end of the driving rod (41) penetrates through the self-locking sleeve (45) and the clamp sleeve (44) and is connected with the force sensor (9), the second end of the driving rod (41) is connected with the test module (5), a conical hole (451) is formed in the self-locking sleeve (45), the self-locking sleeve (45) faces towards the direction of the transition sleeve (42) in the screwing process, the conical hole (451) extrudes a plurality of clamping jaws (441) so that the clamping jaws (441) close to the driving rod (41) and lock the driving rod (41) to prevent the driving rod (41) from sliding relative to the fixed sleeve.
3. The modular synchronous detection device for use with a low field nuclear magnetic resonance spectrometer according to claim 1, wherein the first test assembly (6) comprises:
a compression outer tube (61) detachably mounted to a second end of the guide tube (43); and
the compression sliding block (62) is detachably arranged at the second end of the driving rod (41), and driven by the driving rod (41), the compression sliding block (62) slides along the first direction so as to compress a tested sample arranged at the bottom of the compression outer tube (61) for compression test.
4. The modular synchronous detection device for use with a low field nuclear magnetic resonance spectrometer according to claim 1, wherein the second test assembly (7) comprises:
a conventional stretched outer tube (71) removably mounted to a second end of the guide tube (43);
a conventional stretching slider (72) detachably mounted at the second end of the driving rod (41), and driven by the driving rod (41), the conventional stretching slider (72) slides along the first direction: and
The first stretching assembly (73), the first stretching assembly (73) is installed in the bottom of conventional stretching outer tube (71) with between conventional stretching slider (72), the middle part of first stretching assembly (73) is applicable to placing the sample that is surveyed, in the course that conventional stretching slider (72) is to keeping away from the bottom of conventional stretching outer tube (71), first stretching assembly (73) is along the tensile test of the sample that is surveyed of first direction.
5. The modular synchronous detection device for use with a low field nuclear magnetic resonance spectrometer according to claim 4, wherein the third test assembly (8) comprises:
a sealed stretching outer tube (81) detachably mounted at the second end of the guide tube (43), wherein a liquid injection port (811) is arranged on the sealed stretching outer tube (81) and is suitable for filling test solution into the sealed stretching outer tube (81);
the airtight stretching sliding block (82) is detachably arranged at the second end of the driving rod (41), and the airtight stretching sliding block (82) slides along the first direction under the driving of the driving rod (41): and
The second stretching assembly (83), second stretching assembly (83) install in the bottom of airtight tensile outer tube (81) with between airtight stretching slide (82), the middle part of second stretching assembly (83) is applicable to placing the sample that is surveyed airtight stretching slide (82) are towards keeping away from in-process of the bottom of airtight stretching outer tube (81), second stretching assembly (83) are followed the tensile sample that is surveyed of first direction carries out tensile test.
6. The modular synchronous detection apparatus for use with a low field nuclear magnetic resonance spectrometer according to claim 5, wherein each of the first stretching assembly (73) and the second stretching assembly (83) comprises:
a first tie rod (731) mounted to the bottom of the conventional stretched outer tube (71) or the airtight stretched outer tube (81); and
a second tie rod (732) mounted to either the conventional stretching slider (72) or the airtight stretching slider (82);
wherein the first and second tie rods (731, 732) extend in the first direction, first and second clamps (733, 734) are mounted to opposite ends of the first and second tie rods (731, 732), respectively, the first and second clamps (733, 734) being adapted to clamp a sample to be measured.
7. The modular synchronous detection device for use with a low field nuclear magnetic resonance spectrometer according to claim 1, wherein the drive mechanism (3) comprises:
a housing (31) mounted on the positioning mechanism (2), wherein a slide rail (311) extending along the first direction is arranged on the housing (31);
a drive motor (32) mounted on the housing (31);
a screw rod (33) extending in the first direction, mounted to the driving motor (32), and rotated by the driving motor (32); and
the adapting block (34) is in threaded connection with the screw rod (33) and is slidably arranged in the sliding rail (311), the sliding rail (311) prevents the adapting block (34) from rotating relative to the shell (31) under the rotation driving of the screw rod (33), so that the adapting block (34) moves reciprocally along the screw rod (33), and the force sensor (9) is arranged on the adapting block (34).
8. The modular synchronous detection device for use with a low-field nuclear magnetic resonance spectrometer according to claim 7, wherein the adapting block (34) is provided with a photoelectric sensor (35) adapted to obtain position information of the adapting block (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211243620.9A CN115308251B (en) | 2022-10-12 | 2022-10-12 | Modularized synchronous detection device combined with low-field nuclear magnetic resonance spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211243620.9A CN115308251B (en) | 2022-10-12 | 2022-10-12 | Modularized synchronous detection device combined with low-field nuclear magnetic resonance spectrometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115308251A CN115308251A (en) | 2022-11-08 |
| CN115308251B true CN115308251B (en) | 2023-07-14 |
Family
ID=83867995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211243620.9A Active CN115308251B (en) | 2022-10-12 | 2022-10-12 | Modularized synchronous detection device combined with low-field nuclear magnetic resonance spectrometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115308251B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1283637A1 (en) * | 1985-05-20 | 1987-01-15 | Институт Химической Физики Ан Ссср | Device for investigating mechanical deformation of solids |
| JPH10319178A (en) * | 1997-05-16 | 1998-12-04 | Kawasaki Heavy Ind Ltd | Testing method and its device for mechanical characteristics of structure under neutron radiation in reactor |
| JP2002318180A (en) * | 2001-04-23 | 2002-10-31 | Toyo Seiki Seisakusho:Kk | Uniaxial bidirectional tensile tester and sample central part measuring device using it |
| JP2005338026A (en) * | 2004-05-31 | 2005-12-08 | Toshiba Corp | Compact apparatus and method for testing material |
| CN105092378A (en) * | 2015-08-13 | 2015-11-25 | 河南科技大学 | Tensile test device |
| CN206208651U (en) * | 2016-11-08 | 2017-05-31 | 深圳万测试验设备有限公司 | Biaxial tension-compression strength device |
| CN108195868A (en) * | 2017-12-26 | 2018-06-22 | 桂林理工大学 | Simulate nmr experiments device and its application method during swelled ground drying and watering cycle under load action |
| CN210014995U (en) * | 2019-05-23 | 2020-02-04 | 安徽科技学院 | Simple horizontal tensile test device for magnetic signal measurement |
| CN114942185A (en) * | 2022-04-13 | 2022-08-26 | 北京理工大学 | In-situ mechanical loading testing machine, testing system and testing method |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510696C (en) * | 2006-12-01 | 2009-07-08 | 中国科学院海洋研究所 | Apparatus and method for researching erosion sensibility of stress in air under the condition of dynamic load |
| JP4788622B2 (en) * | 2007-02-09 | 2011-10-05 | 株式会社島津製作所 | Material testing machine |
| CN101746054B (en) * | 2008-12-02 | 2012-05-30 | 中国科学院国家天文台 | Manual film wave plate drawing machine and method for manufacturing wave plate by using thereof |
| TWI575062B (en) * | 2011-12-16 | 2017-03-21 | 拜歐菲樂Ｉｐ有限責任公司 | Cryogenic injection compositions, systems and methods for cryogenically modulating flow in a conduit |
| US9696391B2 (en) * | 2012-05-07 | 2017-07-04 | Academia Sinica | High speed sample transportation apparatus in a superconducting magnet and transporting method thereof |
| CN105675396B (en) * | 2016-02-01 | 2018-04-24 | 上海交通大学 | Multi-functional single shaft tensile test apparatus for microstructure original position online observation |
| CN107063889B (en) * | 2017-03-27 | 2023-04-28 | 中国科学技术大学 | Creep stretching device combined with X-ray scattering and experimental method thereof |
| CN107991175A (en) * | 2017-11-20 | 2018-05-04 | 西北工业大学 | A kind of room temperature for high pressure torsion tensile sample, cryogenic tensile fixture |
| CN109556963A (en) * | 2019-01-24 | 2019-04-02 | 西安市亚星土木仪器有限公司 | Pitch tension failure toughness tester |
| CN110031035B (en) * | 2019-03-25 | 2024-01-16 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Optical fiber sensor stretching, compressing, vibrating and alternating damp-heat fatigue testing device and testing method thereof |
| CN112113844A (en) * | 2020-09-25 | 2020-12-22 | 中国科学院高能物理研究所 | In-situ mechanical performance testing device and testing method |
| CN113654913B (en) * | 2021-09-01 | 2022-05-13 | 中国科学技术大学 | Low-field nuclear magnetic resonance in-situ stretching rheological detection system |
-
2022
- 2022-10-12 CN CN202211243620.9A patent/CN115308251B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1283637A1 (en) * | 1985-05-20 | 1987-01-15 | Институт Химической Физики Ан Ссср | Device for investigating mechanical deformation of solids |
| JPH10319178A (en) * | 1997-05-16 | 1998-12-04 | Kawasaki Heavy Ind Ltd | Testing method and its device for mechanical characteristics of structure under neutron radiation in reactor |
| JP2002318180A (en) * | 2001-04-23 | 2002-10-31 | Toyo Seiki Seisakusho:Kk | Uniaxial bidirectional tensile tester and sample central part measuring device using it |
| JP2005338026A (en) * | 2004-05-31 | 2005-12-08 | Toshiba Corp | Compact apparatus and method for testing material |
| CN105092378A (en) * | 2015-08-13 | 2015-11-25 | 河南科技大学 | Tensile test device |
| CN206208651U (en) * | 2016-11-08 | 2017-05-31 | 深圳万测试验设备有限公司 | Biaxial tension-compression strength device |
| CN108195868A (en) * | 2017-12-26 | 2018-06-22 | 桂林理工大学 | Simulate nmr experiments device and its application method during swelled ground drying and watering cycle under load action |
| CN210014995U (en) * | 2019-05-23 | 2020-02-04 | 安徽科技学院 | Simple horizontal tensile test device for magnetic signal measurement |
| CN114942185A (en) * | 2022-04-13 | 2022-08-26 | 北京理工大学 | In-situ mechanical loading testing machine, testing system and testing method |
Non-Patent Citations (2)
| Title |
|---|
| Magnetic Field Integral Measurements With Stretched Wire and Hall Probe Methods;Mona Gehlot 等;IEEE TRANSACTIONS ON MAGNETICS;第第56卷卷(第第5期期);3100408 * |
| 在线同步对称拉伸仪的研发及应用;周天楠;刘齐锐;蔡绪福;杨昌跃;;实验科学与技术(04);第35-38+43页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115308251A (en) | 2022-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11060965B2 (en) | Microscopic observation system with temperature-pressure-controllable sample cell and methods | |
| CN107255587B (en) | Creep aging bidirectional tension and compression test device | |
| CN109030248A (en) | I-II Mixed Mode Crack Fatigue Crack Growth Rates experimental rig and test method | |
| CN115308251B (en) | Modularized synchronous detection device combined with low-field nuclear magnetic resonance spectrometer | |
| Bernstein et al. | Optimising reaction performance in the pharmaceutical industry by monitoring with NMR | |
| CN1030349C (en) | Material testing machine with expanding and contracting thread pillar | |
| CN111024329A (en) | High-pressure rotation combined sealing element performance detection and test device and method | |
| CN105092378A (en) | Tensile test device | |
| CN105092371A (en) | Biaxial drawing clamp with adjustable drawing ratio | |
| CN110286050A (en) | A kind of slow tensile stress etching pilot system of full pipe sample high-temperature high pressure water of metal tube | |
| CN210166226U (en) | Textile tensile strength detection device | |
| CN218726439U (en) | Stretching filtering membrane pore inspection device | |
| CN111189717A (en) | Material and structure biaxial loading mechanical property test system in ultralow temperature environment | |
| CN113405913B (en) | Device for soil body fracture toughness and tensile strength and application method thereof | |
| CN113125264A (en) | Device and method for testing tensile strength of flexible cable | |
| CN209102518U (en) | A kind of reinforced bar mechanical connector tensile strength test device | |
| CN112945738B (en) | Mechanical test device | |
| CN113640101A (en) | Rock sample point load tester and test method | |
| CN206671221U (en) | A kind of gear defects detecting system based on image procossing | |
| CN219725906U (en) | Self-overturning clamp for visual inspection equipment | |
| CN219757913U (en) | Length measuring device | |
| Nolan et al. | Monofilament drawing device for in situ x‐ray scattering studies of orientation development in polymeric fibers | |
| CN219284878U (en) | Sample loading and magnetic field detection device | |
| CN217006659U (en) | Textile friction-resistant color fastness detection clamping mechanism and device | |
| CN217688276U (en) | Optical fiber tension testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |