CN110333134A - Uniaxial stretching device and experimental method associated with a kind of and neutron scattering - Google Patents

Uniaxial stretching device and experimental method associated with a kind of and neutron scattering Download PDF

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Publication number
CN110333134A
CN110333134A CN201910607529.2A CN201910607529A CN110333134A CN 110333134 A CN110333134 A CN 110333134A CN 201910607529 A CN201910607529 A CN 201910607529A CN 110333134 A CN110333134 A CN 110333134A
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stretching device
neutron scattering
lead screw
way
uniaxial
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田楠
鞠见竹
刘栋
王亭亭
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Northwestern Polytechnical University
Northwest University of Technology
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Northwest University of Technology
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
    • G01N23/20008—Constructional details of analysers, e.g. characterised by X-ray source, detector or optical system; Accessories therefor; Preparing specimens therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
    • G01N23/20008—Constructional details of analysers, e.g. characterised by X-ray source, detector or optical system; Accessories therefor; Preparing specimens therefor
    • G01N23/20025—Sample holders or supports therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
    • G01N23/20008—Constructional details of analysers, e.g. characterised by X-ray source, detector or optical system; Accessories therefor; Preparing specimens therefor
    • G01N23/20025—Sample holders or supports therefor
    • G01N23/20033—Sample holders or supports therefor provided with temperature control or heating means
    • 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
    • G01N3/02—Details
    • G01N3/04—Chucks
    • 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
    • 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
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0005—Repeated or cyclic
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0017—Tensile
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0075—Strain-stress relations or elastic constants
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0222—Temperature
    • G01N2203/0226—High temperature; Heating means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0278—Thin specimens
    • G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/10—Different kinds of radiation or particles
    • G01N2223/106—Different kinds of radiation or particles neutrons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/30—Accessories, mechanical or electrical features
    • G01N2223/31—Accessories, mechanical or electrical features temperature control
    • G01N2223/3106—Accessories, mechanical or electrical features temperature control heating, furnaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/60—Specific applications or type of materials
    • G01N2223/61—Specific applications or type of materials thin films, coatings

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Abstract

The present invention proposes uniaxial stretching device and experimental method associated with a kind of and neutron scattering, and solving in the prior art can not be to the control respectively of strain rate, temperature；It is not equipped with independent displacement calibration function；And it can not be aiming at the problem that characteristic of different materials regulates and controls sample mounting means and outfield loading mode.The technical scheme is that uniaxial reciprocal stretching device associated with a kind of and neutron scattering, including servo motor further include compileable motion controller, mechanical reduction gear, two-way transmission mechanism, laser displacement sensor, tension sensor, heating chamber, two-way lead screw, nut, transmission rod and fixture etc..The control respectively of strain rate and temperature may be implemented；It is equipped with independent displacement calibration function, effectively avoids the accumulated error of mechanical movement；It using separate type fixture and bindiny mechanism, is convenient for changing, can be debugged according to different sample characteristics of for example in experimentation；It can also realize the switching of two kinds of different stretch modes.

Description

Uniaxial stretching device and experimental method associated with a kind of and neutron scattering
Technical field
The present invention relates to developed and the technology of different outer field parameters coupled relations neck with neutron scattering research macromolecular structure Domain particularly relates to uniaxial reciprocal stretching device and its experimental method associated with a kind of and neutron scattering.
Background technique
Study deformation off field and transformation behavior outside high molecular material, it usually needs the temperature of setting, strain rate and Under stretch mode, the microstructure information of online means characterization material internal is utilized.In many cases, the use of macromolecule product Range is very extensive, needs to study its performance under different use conditions.It is as comprehensive as possible that this just needs research means to provide Outer field parameters, comprising: continuously adjustable strain, strain rate, temperature environment etc. on a large scale.
In existing stretching device, single extensional motion mode can only be realized, cannot achieve the big model of strain rate It encloses continuously adjustable.
Summary of the invention
The present invention proposes one kind and uniaxial stretching device and experimental method associated with neutron scattering, solves in the prior art It can not be to the control respectively of strain rate, temperature；It is not equipped with independent displacement calibration function；And it can not be for different materials Characteristic regulates and controls the problem of outfield loading mode.
The technical scheme is that uniaxial reciprocal stretching device associated with a kind of and neutron scattering, including pedestal: bottom It is provided with two-way lead screw 9 on seat, two-way lead screw is connected with mechanical reduction gear 3, and mechanical reduction gear is connected with servo motor 1, Compileable motion controller 2 controls servo motor 1, and the both ends hand of spiral of two-way lead screw 9 on two-way lead screw 9 on the contrary, be provided with Two-way transmission mechanism 4, two-way transmission mechanism 4 include two slide units, and two slide units are set in the both ends of two-way lead screw 9, sliding Threaded hole being threadedly engaged respectively at the two-way lead screw 9 of correspondence on platform is provided with heating chamber 7 between two slide units, heating chamber 7 Both ends have been arranged oppositely fixture, and fixture is connected with tension sensor 6, and tension sensor 6 is connected with slide unit.
Laser displacement sensor 8 is installed on the top sliding rail of two-way transmission mechanism.
The heating chamber 7 is equipped with AI temperature controller.
The fixture uses separate type fixture, including upper grip 12-1 and lower collet 12-2, upper grip 12-1 and lower folder Head 12-2 is connected by bolt, and lower collet 12-2 and transmission rod 11 are threadedly coupled, and is passed through between transmission rod 11 and tension sensor 6 Screw thread is connected, and 1 both ends of transmission rod are equipped with locking nut 10.
A kind of experimental method for the reciprocal stretching device of single shaft being used in conjunction with neutron scattering:
Servo motor 1 is connect by step 1 with compileable motion controller 2, and tension sensor 6 is connect with acquisition system；
Macromolecule membrane sample is fixed on fixture and is passed through nitrogen by step 2；
Step 3 sets elongation strain, strain rate and cycle-index by compileable motion controller 2；
Step 4, setting 7 macromolecule membrane sample of heating chamber, 5 draft temperature；
Step 5, using compileable 2 setting degree servo motor of motion controller, 1 stretch mode, start to stretch；
Structure evolution after recording 5 stress variation of macromolecule membrane sample in step 6, drawing process simultaneously and stretching.
The beneficial effect of the technical program mainly has:
1, for the characteristic of different detection materials, regulate and control sample mounting means and outfield loading mode；
2, the control respectively of strain rate, temperature may be implemented；
3, light portable, installation dimension is small, convenient for being combined with neutron scattering light source；
4, laser displacement sensor is equipped with independent displacement calibration function, effectively avoids the accumulated error of mechanical movement；
5, it using separate type fixture and bindiny mechanism, is convenient for changing, can be carried out according to different sample characteristics of for example in experimentation Debugging；
6, the switching of two kinds of different stretch modes of compileable motion controller realization is combined by servo motor:
1. being uniaxially stretched
2. reciprocal stretch
Detailed description of the invention
Fig. 1 is the structural schematic diagram of uniaxial stretching device of the present invention associated with neutron scattering.
Fig. 2 is separate type fixture and bindiny mechanism's schematic diagram of the present invention.
Wherein: 1 servo motor, 2 be compileable motion controller, and 3 be mechanical reduction gear, and 4 be two-way transmission mechanism, 5 It is tension sensor for macromolecule membrane sample, 6,7 be heating chamber, and 8 be laser displacement sensor, and 9 be two-way lead screw, and 10 be spiral shell Mother, 11 be transmission rod, and 12-1 is upper grip, and 12-2 is lower collet.
Specific embodiment
In order to clearly illustrate the technical characterstic of this programme, this case is illustrated below by specific embodiment.
Embodiment 1
Two-way lead screw 9 is provided on pedestal, two-way lead screw is connected with mechanical reduction gear 3, mechanical reduction gear and servo Motor 1 is connected, and motion controller 2 can be compiled and control servo motor 1, the both ends hand of spiral of two-way lead screw 9 is on the contrary, two-way lead screw Two-way transmission mechanism 4 is provided on 9, two-way transmission mechanism 4 includes two slide units, and two slide units are set in two-way lead screw 9 Both ends, threaded hole being threadedly engaged respectively at the two-way lead screw 9 of correspondence on slide unit be provided with heating chamber 7 between two slide units, The both ends of heating chamber have been arranged oppositely fixture, and fixture is connected with tension sensor 6, and tension sensor 6 is connected with slide unit.
The present invention use process is as follows:
Servo motor 1 is connect by step 1 with compileable motion controller 2, and tension sensor 6 is connect with acquisition system；
Macromolecule membrane sample 5 is fixed on fixture by step 2, is passed through nitrogen；
Step 3, setting elongation strain, strain rate and cycle-index；
Step 4, setting 5 draft temperature of heating chamber macromolecule membrane sample；
Step 5, using compileable 2 setting degree servo motor of motion controller, 1 stretch mode, start to stretch；
Structure evolution after recording 5 stress variation of macromolecule membrane sample in step 6, drawing process simultaneously and stretching, passes through Different stretch rate, draw ratio or stretch mode, system research molecular parameter and outer field parameters are implemented to different macromolecule samples To the influence that mechanical response and structure change, the structure that these data are coupled together to obtain high molecular material under different conditions is turned Become mechanism and service performance.
The switching of two kinds of different stretch modes may be implemented by servo motor 1 and compileable motion controller 2；By more The combination of grade deceleration mechanism and servo motor, realizes strain rate range 0.001-10s-1It is continuous a wide range of adjustable.It can obtain Morphosis information under to high molecular material stretching condition obtains the relationship of different outer field parameters and Evolution Microstructure.
Device is equipped with separate type fixture and bindiny mechanism, can carry out certainly for different sample shapes, preparation process Definition design and adjustment, meet the test request to different performance sample；It is full equipped with the tension sensor 6 of replaceable range The different experiment demand of foot.
The device uses AI temperature controller precise control of temperature, and the temperature information of thermal resistance detection is fed back to AI temperature control Device processed automatically adjusts working condition to achieve the purpose that accurate temperature controlling.
To sum up, the present invention can study different polymer materials at a temperature of different stretch, under different type stretch mode Structure evolution behavior, outer influence of the field parameters to Polymer Materials ' Structure and mechanical behavior of research different type.By neutron scattering The network deformation for the film sample that experiment obtains, chain structure, the degree of orientation are coupled with stretching mechanical data, available external world flow field With the relationship of phase transition process and final products performance.
Embodiment 2
Preferably, laser displacement sensor 8 is installed on the overlying guide rail of two-way transmission mechanism, to provide independent position Information is detected and is corrected to the process of stretching, avoid accumulated error, improves the reliability of equipment.
The other structures and embodiment 1 of the present embodiment are identical.
Embodiment 3
Preferably, 7 there is an AI temperature controller precise control of temperature in heating chamber, the temperature information feedback of thermal resistance detection arrives AI temperature controller automatically adjusts working condition to achieve the purpose that accurate temperature controlling, and is passed through nitrogen to guarantee that macromolecule is thin Membrane sample is heated evenly.
The other structures and embodiment 1 of the present embodiment are identical.
Embodiment 4
Preferably, using separate type fixture and bindiny mechanism, the fixture uses separate type fixture, including upper grip 12-1 and lower collet 12-2, upper grip 12-1 are connected with lower collet 12-2 by bolt, 11 screw thread of lower collet 12-2 and transmission rod Connection is connected between transmission rod 11 and tension sensor 6 by screw thread, and 1 both ends of transmission rod are equipped with locking nut 10, Ke Yishi The fine tuning of existing length, can also replace during the experiment different fixture and to process be adjusted without to device into Row dismounting.
The other structures and embodiment 1 of the present embodiment are identical.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (5)

1. uniaxial reciprocal stretching device associated with a kind of and neutron scattering, including pedestal, it is characterised in that: be provided on pedestal double To lead screw (9), two-way lead screw (9) is connected with mechanical reduction gear (3), and mechanical reduction gear (3) is connected with servo motor (1), Compileable motion controller (2) control servo motor (1), the both ends hand of spiral of two-way lead screw (9) is on the contrary, two-way lead screw (9) On be provided with two-way transmission mechanism (4), two-way transmission mechanism (4) includes two slide units, and two slide units are set in two-way silk The both ends of thick stick (9), threaded hole on slide unit are threadedly engaged with corresponding two-way lead screw (9) respectively, are provided between two slide units Heating chamber (7), the both ends in heating chamber (7) have been arranged oppositely fixture, and fixture is connected with tension sensor (6), tension sensor (6) it is connected with slide unit.
2. uniaxial reciprocal stretching device associated with a kind of and neutron scattering as described in claim 1, it is characterised in that: in two-way biography Laser displacement sensor (8) are installed on the top sliding rail of motivation structure.
3. uniaxial reciprocal stretching device associated with a kind of and neutron scattering as described in claim 1, it is characterised in that: described adds Hot chamber (7) is provided with AI temperature controller.
4. uniaxial reciprocal stretching device associated with a kind of and neutron scattering as described in claim 1, it is characterised in that: the folder Tool uses separate type fixture, including upper grip (12-1) and lower collet (12-2), and upper grip (12-1) and lower collet (12-2) are logical It crosses bolt to be connected, lower collet (12-2) and transmission rod (11) are threadedly coupled, and are passed through between transmission rod (11) and tension sensor (6) Screw thread is connected, and transmission rod (11) both ends are equipped with locking nut (10).
5. a kind of experimental method for the reciprocal stretching device of single shaft being used in conjunction with neutron scattering, it is characterized in that:
Servo motor (1) is connect by step 1 with compileable motion controller (2), and tension sensor (6) is connect with acquisition system；
Macromolecule membrane sample (5) is fixed on fixture and is passed through nitrogen by step 2；
Step 3 utilizes compileable motion controller (2) setting elongation strain, strain rate and cycle-index；
Step 4, setting heating chamber (7) macromolecule membrane sample (5) draft temperature
Step 5 sets servo motor (1) stretch mode using compileable motion controller (2), starts to stretch；
Structure evolution after recording macromolecule membrane sample (5) stress variation in step 6, drawing process simultaneously and stretching.
CN201910607529.2A 2019-07-04 2019-07-04 Uniaxial stretching device and experimental method associated with a kind of and neutron scattering Pending CN110333134A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113406128A (en) * 2021-07-23 2021-09-17 重庆大学 Temperature control accessory for X-ray diffractometer

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