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Uniaxial stretching device used with neutron scattering and experimental method

A neutron scattering and stretching device technology, which is applied in measuring devices, using wave/particle radiation for material analysis, and applying stable tension/pressure to test the strength of materials, etc. The material regulates the loading mode of the external field, cannot control the strain rate, and the temperature separately, etc., to achieve the effect of small installation size, convenient replacement, and avoiding the accumulation of errors

Inactive Publication Date: 2019-10-15
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a uniaxial stretching device and experimental method combined with neutron scattering, which solves the problem that the prior art cannot control the strain rate and temperature separately; it is not equipped with an independent displacement correction function; and it cannot be used for different materials. The problem of the characteristic control field loading mode

Method used

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  • Uniaxial stretching device used with neutron scattering and experimental method
  • Uniaxial stretching device used with neutron scattering and experimental method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The base is provided with a two-way lead screw 9, the two-way lead screw is connected with the mechanical deceleration mechanism 3, the mechanical deceleration mechanism is connected with the servo motor 1, and the motion controller 2 can be compiled to control the servo motor 1, and the two ends of the two-way lead screw 9 have opposite thread directions. The two-way screw 9 is provided with a two-way transmission mechanism 4, the two-way transmission mechanism 4 includes two sliding tables, and the two slides are respectively set on the two ends of the two-way screw 9, and the threaded holes on the slide table are respectively corresponding to the two-way screw 9. A heating chamber 7 is provided between the two sliding tables, and clamps are arranged at opposite ends of the heating chamber, the clamps are connected to the tension sensor 6, and the tension sensor 6 is connected to the sliding table.

[0031] The present invention uses process as follows:

[0032] Step ...

Embodiment 2

[0043] Preferably, a laser displacement sensor 8 is installed on the upper guide rail of the two-way transmission mechanism to provide independent position information, detect and correct the stretching process, avoid accumulating errors, and improve the reliability of the equipment.

[0044] Other structures of this embodiment are the same as Embodiment 1.

Embodiment 3

[0046] Preferably, there is an AI temperature controller in the heating chamber 7 to accurately control the temperature, and the temperature information detected by the thermal resistance is fed back to the AI ​​temperature controller to automatically adjust the working state to achieve the purpose of precise temperature control, and nitrogen gas is introduced to ensure that the polymer film The sample is heated evenly.

[0047] Other structures of this embodiment are the same as Embodiment 1.

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Abstract

The invention provides a uniaxial stretching device used with neutron scattering and an experimental method, which solve the problems in the prior art that strain rate and temperature cannot be controlled respectively, an independent displacement correction function is not provided, and sample installation and external field loading modes cannot be controlled for the characteristics of different materials. According to the technical solution, the uniaxial reciprocating stretching device used with neutron scattering comprises a servo motor, and further comprises a compilable motion controller,a mechanical deceleration mechanism, a bidirectional transmission mechanism, a laser displacement sensor, a tension sensor, a heating cavity, a bidirectional screw, a nut, a dowel bar, a fixture and the like. Strain rate and temperature cannot be controlled respectively; an independent displacement correction function is provided to effectively avoid the accumulative error of mechanical motion; the separated fixture and connecting mechanism are easy to replace during experiment, and can be debugged according to different sample characteristics; and two different stretching modes can also be switched.

Description

technical field [0001] The invention relates to the technical field of using neutron scattering to study the coupling relationship between macromolecule structure evolution and different external field parameters, in particular to a uniaxial reciprocating stretching device used in conjunction with neutron scattering and an experimental method thereof. Background technique [0002] To study the deformation and phase transition behavior of polymer materials under an external field, it is usually necessary to use online means to characterize the microstructure information inside the material under the set temperature, strain rate and stretching mode. In many cases, polymer products are used in a wide range of applications, and their performance under different conditions of use needs to be studied. This requires research methods to provide as comprehensive external field parameters as possible, including: large-scale continuously adjustable strain, strain rate, temperature envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/32G01N3/04G01N23/20025G01N23/20033G01N23/20008
CPCG01N3/04G01N3/08G01N3/32G01N23/20008G01N23/20025G01N23/20033G01N2203/0005G01N2203/0017G01N2203/0075G01N2203/0226G01N2203/0282G01N2203/0676G01N2223/106G01N2223/3106G01N2223/61
Inventor 田楠鞠见竹刘栋王亭亭
Owner NORTHWESTERN POLYTECHNICAL UNIV
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