CN207066871U - Supper-fast stretching device associated with a kind of scattering of and X ray - Google Patents
Supper-fast stretching device associated with a kind of scattering of and X ray Download PDFInfo
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- CN207066871U CN207066871U CN201720119207.XU CN201720119207U CN207066871U CN 207066871 U CN207066871 U CN 207066871U CN 201720119207 U CN201720119207 U CN 201720119207U CN 207066871 U CN207066871 U CN 207066871U
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- drawing process
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Abstract
The utility model provides supper-fast stretching device associated with a kind of scattering of and X ray.Device is synchronously driven using two peace river servomotors, reduces the mechanical loss that machine driving is brought.The device one end configures torque sensor, detects material stress in drawing process and changes.Device reduces the Acceleration and deceleration time of drawing process using separation type drive mechanism, effectively using motor speed, improves strain rate.Moreover, device drawing mechanism employs hollow detachable disk roller, the rotary inertia of reducing mechanism, linear velocity is improved under same rotational speed, and a variety of Installation Modes can be provided, coordinate the testing requirement of different samples and use condition.Device ensures sample bin temperature uniformity using pressure nitrogen stream, and reduces the thermal degradation of sample at high temperature.The utility model has the advantages that easily disassembled and installation, is very suitable for being combined with synchrotron radiation experiment line station, and condition advantageously is provided for macromolecule melt crystallization behavior under research non-equilibrium condition.
Description
Technical field
It the utility model is related to the skill for being scattered research macromolecular structure with synchrotron radiation X-ray and being developed with outfield parameters relationship
Art field, and in particular to supper-fast stretching device associated with a kind of scattering of and X ray.
Background technology
Under the conditions of industrial production and military service, many times material needs to undergo superfast strain rate, in non-flat
Weighing apparatus condition.Polymer Materials ' Structure, which develops, under research ultrahigh speed outer field action has great importance.The conventional base of this research
This thinking is under the conditions of the temperature of setting, pressure etc., applies flow field to material, and different using different optical instrument analyses
The structure and performance characteristic of yardstick.And for uniaxial tension flow field, the draw ratio that material can bear is fixed, then experiment
The middle limit velocity that can reach is with strain rate just while depending on draw speed and loading acceleration.In draft flowing deformation
In, more commonly used is roll shaft stretching.This form can ensure to be stretched the consistent length of portion of material, i.e., drawn in identical
Stretch holding identical strain rate under speed.In the case of power source power invariability, the rotation of whole system and running part
Inertia will influence the effect of experiment；Stretched for roll shaft, under identical torque capacity and angular velocity of rotation, holder part half
Footpath can then influence the coupling of moment of torsion and rotating speed.
Meanwhile for the research that the structure in drawing process changes, optimum method is various optical detections in situ
Means.Especially ultrafast X-ray scatters, quicker for various stabilizations in polymer crystallization material and metastable ordered structure
Sense, it can be used for studying structure type, content, form and structure conversion rates and the dynamics of supper-fast structure transformation.It is conventional
X ray scattering means be mainly small angle and WAXS wide angle X ray scattering, pass through sample-detection range and the coupling of structure space yardstick
Close, the structure of different spaces yardstick can be tracked respectively.
On-spot study is carried out in order to change to the structure of high polymer material drawing process, experimental provision must is fulfilled for following bar
Part：1st, the rotary inertia of actuating section is small, and power source power is sufficiently large；2nd, for the characteristic of different detection materials, for line
The coupling of speed and moment of torsion is regulated and controled.3rd, light portable, installation dimension is small, is easy to be combined with synchrotron radiation light source.4th, set
Have and be easy to scatter the light hole that light passes through, while must assure that sample cavity temperature homogeneity again.
Utility model content
The purpose of this utility model is, there is provided supper-fast stretching device associated with a kind of scattering of and X ray.The stretching fills
Put with it is easily disassembled and installation, be easy to be combined with synchrotron radiation X-ray experiment centre the characteristics of；Rate of extension and draw ratio are continuous
It is adjustable；Limiting strain speed is increased substantially by separation type drive mechanism, makes full use of power of motor；Stretching mode is single shaft
Stretch of drum, ensure constant draw speed and strain rate；Sample temperature control is accurate；Pulling force range ability is big, has more
The features such as passage real-time data acquisition.Morphosis information such as crystallinity, the degree of orientation and the rheology of high polymer material can be obtained
Information (tension variations), obtain the relation that outer field parameters develop with membrane structure.
The technical solution adopted in the utility model is：Supper-fast stretching device associated with a kind of scattering of and X ray, including height
Precision servomotor, motion controller, torque sensor, angular transducer, hollow roller drum fixture, open brake control and height
Molecular sample, wherein：
Two high-precision servo motors synchronize linkage stretching sample, two high-precision servo electricity by motion controller
Prow, which first drives, accelerates to maximum speed, then drives stretched portion to start to rotate.Hollow roller drum fixture is utilized simultaneously, identical
Motor speed under improve draw speed so as to improve strain rate, after drawing process is tested and modeled, obtain speed
With the corresponding relation of Acceleration and deceleration time, using motor and brake control controlled strain and stretch mode are opened, in drawing process,
Torque sensor tracks tension variations, characterizes rheology information.Angular transducer is combined with high speed encoder and oscillograph, to drawing
The positional information for extending through journey is recorded, and can obtain strain and strain rate information；Draft temperature is by binary channels temperature control
Device accurately controls, and sample heating chamber sets two thermal resistances, and the temperature information of detection feeds back to temperature controller, temperature controller
Working condition is automatically adjusted to reach the purpose of accurate temperature controlling；Being passed through for nitrogen can ensure the uniform of film temperature.
Wherein, device, can be to system by assembling the hollow roller drum and fixture of different model under the conditions of high-speed stretch
Maximum speed and the parameter such as highest stress coupled, meet the test request to different performance sample.Device makes full use of
Power of motor, while the change of pulling force in drawing process can be gathered, study the phase transformation of field of flow induction crystallization under non-equilibrium condition
Characteristic and physical mechanism.
The utility model innovative point compared with conventional stretching device mainly has：
(1) the utility model device has easily disassembled and installation, is easy to be combined with synchrotron radiation X-ray experiment centre.
(2) the utility model rate of extension and draw ratio continuously adjustabe, control are accurate；
(3) the utility model increases substantially limiting strain speed by separation type drive mechanism, makes full use of motor work(
Rate；
(4) the utility model stretching mode is stretched for single shaft hollow roller drum, and linear velocity is improved under same motor rotating speed, is dropped
Low rotor inertia；
(5) the utility model pulling force range ability is big, has the characteristics that multichannel real-time data acquisition.
(6) the utility model can obtain morphosis the information such as crystallinity, the degree of orientation and rheology letter of high polymer material
Breath (strain, stress variation), obtains the relation that outer field parameters develop with membrane structure.
(7) application prospect of the present utility model：1) it is combined with synchrotron radiation X-ray scattering experiment station, system research high score
Processing problem in science in sub- material ultrahigh speed drawing process；2) the microstructure transition process under non-equilibrium condition, solution are studied
Release the phase transformation theory in non-equilibrium physics.
Brief description of the drawings
Fig. 1 is the structural representation of the permanent breadth thin film stretching device described in the utility model associated with scattering with X ray, figure
In 1 be high-precision servo motor, 2 be motion controller, and 3 be torque sensor, and 4 be angular transducer, and 5 be hollow roll collet chuck
Tool, 6 is open brake control, and 7 be separation type drive mechanism, and 8 be macromolecule membrane sample；
Fig. 2 is the schematic diagram of hollow roller drum fixture described in the utility model, wherein, Fig. 2 (a) is stereogram, and Fig. 2 (b) is
Profile, Fig. 2 (c) are front view；
Fig. 3 is the rheological data obtained in the utility model, including strain, strain rate and stress, wherein, Fig. 3 (a) is
Initial data：Strain rate-time diagram, Fig. 3 (b) are strain-time diagram, and Fig. 3 (c) is filtering process：Judgement of speed change
Rate-time diagram, Fig. 3 (d) are average strain rate-schematic illustration of strain, and Fig. 3 (e) is average strain rate-time signal
Figure；
Fig. 4 is the WAXS wide angle X ray scattering figure of the stretching induction natural rubber crystallization under differently strained speed；
Fig. 5 is rheological data and structure evolution data, wherein, Fig. 5 (a) is strain and engineering stress (MPa) graph of a relation,
Fig. 5 (b) is the strain rate (second-1) and nucleation time (millisecond) graph of a relation.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
Referring to accompanying drawing 1, supper-fast stretching device associated with a kind of scattering of and X ray, including two high-precision servo motors
1, motion controller 2, torque sensor 3, angular transducer 4, hollow roller drum fixture 5, open brake control 6, separate type biography
Motivation structure 7, macromolecule membrane sample 8, wherein, two high-precision servo motors 1 synchronize linkage by motion controller and drawn
Stretch sample.Two high-precision servo motors 1 accelerate to maximum speed (3000 rpms) first, then by opening control for brake
Device 6 controls separation type drive mechanism 7 to start sample stretching.Hollow roller drum fixture 5 is utilized simultaneously, under identical motor speed
Draw speed is improved so as to improve strain rate.After drawing process is tested and modeled, speed and Acceleration and deceleration time are obtained
Corresponding relation, using motor and opening the controlled strain of brake control 6 and stretch mode.In drawing process, torque sensor 3
Tension variations are tracked, characterize rheology information.Angular transducer 4 is combined with high speed encoder and oscillograph, to drawing process
Positional information is recorded, and can obtain strain and strain rate information；Sample draft temperature is by binary channels temperature controller essence
Really control, sample heating chamber set two thermal resistances, and the temperature information of detection feeds back to temperature controller, and temperature controller is automatic
Adjustment work state is to reach the purpose of accurate temperature controlling；Being passed through for nitrogen can ensure the uniform of film temperature.
The device is realized to sample temperature control, temp probe using the working condition of binary channels temperature controller control heating rod
With feedback effect.Cavity temperature and temperature rate are accurately controlled by pid regulator parameters.
Experiment embodiment：
The influence that the ultrafast rate of extension of WAXS wide angle X ray scattering on-spot study crystallizes to stretching induction natural rubber.
Experiment purpose：
Natural rubber can crystallize under stretching condition.But closed always for the crystallization of stretching induction natural rubber
Transformation behavior and the relation of strain are noted, the no enough data of research on the influence of strain rate are supported.Moreover, by
It is relatively low in traditional stretching device strain rate and draw ratio is limited, can not reflect well natural rubber crystallization kinetics with
Flow the relation of field parameters.In this experiment, using supper-fast stretching device, with reference to the wide angle detection of ultrafast X-ray, we are able to
It was observed that the transformation information that natural rubber stretching induction crystallizes under differently strained speed.
Experimentation：
Natural rubber raw material is No. 1 smoke sheet rubber of Indonesia, uses compression molding instrument tabletting after adding sulphur banburying, sample size is
0.4*5*45mm.The differentiation of sample morphology before and after the wide angle scattering tracking stretching of X ray, moment of torsion and angular transducer record drawing respectively
The change of stress and strain during stretching.With reference to pulling force and sample morphology, high-speed stretch condition inducing natural rubber can be obtained
The phase transformation of crystallization and rheology information.This example studies rate of extension from 1s using rate of extension as variable-1To 234s-1When, draw
The change of sample structure during stretching.
Experimental result：
Fig. 3 is the rheological data obtained in the utility model, including strain, strain rate and stress, wherein, Fig. 3 (a) is
Initial data：Strain rate-time diagram, Fig. 3 (b) are strain-time diagram, and Fig. 3 (c) is filtering process：Judgement of speed change
Rate-time diagram, Fig. 3 (d) are average strain rate-schematic illustration of strain, and Fig. 3 (e) is average strain rate-time signal
Figure；Highest strain rate achieved by device is 234s-1, and the maximum strain that selected sample can bear be 3 when, experiment
In the average strain rate that actually obtains be 150s-1。
Fig. 4 is the WAXS wide angle X ray scattering figure of the stretching induction natural rubber crystallization under differently strained speed.It can be seen that
With the increase of draw speed, the critical stretching time response for generating crystal structure is reduced.
Fig. 5 is rheology and phase transformation quantitative data in ultrahigh speed drawing process, it can be seen that with the increasing of strain rate
Add, the stress value in drawing process increases therewith, and the critical nucleation time is reduced；After carrying out exponential transform, judgement of speed change is found
Rate has good corresponding relation with nucleation time, has for the transformation behavior under the conditions of supposition more high strain rate important
Directive significance.
Experiment conclusion：
It can see from the rheology in the ultrahigh speed drawing process in Fig. 5 and phase transformation quantitative data, with strain rate
Increase, the stress value in drawing process increases therewith, and the critical nucleation time is reduced；Under identical temperature conditionss, nucleation energy
Power and nucleation rate are strengthened with the strain rate in flow field, give the brand-new reality of ultrahigh speed flow field inducing natural rubber crystallization
Test phenomenon.
What the utility model did not elaborated partly belongs to techniques well known.
Although the illustrative embodiment of the utility model is described above, in order to the skill of this technology neck
Art personnel understand the utility model, it should be apparent that the utility model is not limited to the scope of embodiment, this technology is led
For the those of ordinary skill in domain, as long as the spirit of the present utility model that various change is limited and determined in appended claim
In scope, these changes are it will be apparent that all utilize the innovation and creation of the utility model design in the row of protection.
Claims (2)
1. supper-fast stretching device associated with a kind of scattering of and X ray, it is characterised in that：Including two high-precision servo motors
(1), motion controller (2), torque sensor (3), angular transducer (4), hollow roller drum fixture (5), brake control is opened
(6), separation type drive mechanism (7), macromolecule membrane sample (8), wherein：
Two high-precision servo motors (1) synchronize linkage stretching sample, two high-precision servos by motion controller (2)
Motor (1) drives accelerate to maximum speed first, then opens brake control (6) driving separation type drive mechanism (7) and starts
Stretching, while hollow roller drum fixture (5) is utilized, draw speed is improved under identical motor speed so as to improve strain rate,
After drawing process is tested and modeled, the corresponding relation of speed and Acceleration and deceleration time is obtained, using motor and opens braking control
Device (6) controlled strain and stretch mode processed, in drawing process, torque sensor (3) tracking tension variations, characterize rheology letter
Breath, angular transducer (4) are combined with high speed encoder and oscillograph, the positional information of drawing process are recorded, can obtain
To strain and strain rate information；Draft temperature is accurately controlled by binary channels temperature controller, installation two in sample heating chamber
Thermal resistance, the temperature information of detection feed back to temperature controller, and temperature controller automatically adjusts working condition to reach accurate control
The purpose of temperature；Being passed through for nitrogen can ensure the uniform of film temperature.
2. supper-fast stretching device associated with a kind of scattering of and X ray as claimed in claim 1, it is characterised in that utilize and divide
From formula transmission mechanism control, power of motor and moment of torsion are made full use of, low rotor inertia part is accelerated and slowed down, is tied simultaneously
High speed acquisition system is closed, realizes the ultrahigh speed stretching and test of high polymer material, using X ray ultrahigh speed in-situ characterization technology,
Structural information under drawing process field of flow is tracked, studies section's knowledge in its phase transformation theory and actual production processing
Topic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119207.XU CN207066871U (en) | 2017-02-09 | 2017-02-09 | Supper-fast stretching device associated with a kind of scattering of and X ray |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720119207.XU CN207066871U (en) | 2017-02-09 | 2017-02-09 | Supper-fast stretching device associated with a kind of scattering of and X ray |
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| CN207066871U true CN207066871U (en) | 2018-03-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507881A (en) * | 2018-03-19 | 2018-09-07 | 西安交通大学 | Superhigh temperature power thermal coupling deformeter and working method are tested in situ based on Reflection X-ray |
| CN110031362A (en) * | 2019-02-26 | 2019-07-19 | 中国科学技术大学 | A kind of steam stretching, extension rheometer |
| CN110333134A (en) * | 2019-07-04 | 2019-10-15 | 西北工业大学 | Uniaxial stretching device and experimental method associated with a kind of and neutron scattering |
-
2017
- 2017-02-09 CN CN201720119207.XU patent/CN207066871U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507881A (en) * | 2018-03-19 | 2018-09-07 | 西安交通大学 | Superhigh temperature power thermal coupling deformeter and working method are tested in situ based on Reflection X-ray |
| CN108507881B (en) * | 2018-03-19 | 2019-02-26 | 西安交通大学 | Superhigh temperature power thermal coupling deformeter and working method are tested in situ based on Reflection X-ray |
| CN110031362A (en) * | 2019-02-26 | 2019-07-19 | 中国科学技术大学 | A kind of steam stretching, extension rheometer |
| CN110333134A (en) * | 2019-07-04 | 2019-10-15 | 西北工业大学 | Uniaxial stretching device and experimental method associated with a kind of and neutron scattering |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180302 Effective date of abandoning: 20230428 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180302 Effective date of abandoning: 20230428 |