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Device and method for measuring change law of flexible material performance along with bending radius

A technology of flexible materials and changing laws, applied in measurement devices, analytical materials, instruments, etc., can solve problems such as the actual application environment gap, and achieve the effect of a wide range of applications

Inactive Publication Date: 2016-07-20
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, nowadays, the performance tests of the developed flexible materials are often carried out under the condition that the materials do not deform, and there is a certain gap between them and the actual application environment.

Method used

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  • Device and method for measuring change law of flexible material performance along with bending radius
  • Device and method for measuring change law of flexible material performance along with bending radius
  • Device and method for measuring change law of flexible material performance along with bending radius

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 Cellulose paper / Bi 2 Te 3 Variation of electrical properties of thermoelectric thin film composites with increasing or decreasing bending radius.

[0047] Test method: The composite cellulose paper sample is placed on an elastic polybenzamide substrate, the fiber is fixed with thermal and conductive silver glue and four-terminal test leads are drawn out to monitor temperature and voltage during measurement. The contact area between the silver glue lead wire and the surface of the cellulose paper should be as small as possible, so as not to introduce unnecessary measurement errors. Then place the polybenamide sheet with the sample on glass tubes with different curvature radii, use the curvature radius of the glass tube to characterize the bending radius of the composite fiber, and record the corresponding resistance value change.

[0048] Such as Figure 1-Figure 3 As shown, the structure of the experimental device used for the test is as follows:

[004...

Embodiment 2

[0052] Embodiment 2 glass fiber / Bi 2 Te 3 Variation law of electrical properties of thin film composites with increase or decrease of bending radius.

[0053] In the same test method as in Example 1, the composite fiber sample was placed on an elastic polyamide substrate, the fiber was fixed with thermally and electrically conductive silver glue, and four-terminal test leads were drawn out to monitor temperature and voltage during measurement. The contact area between the silver glue lead wire and the surface of the cellulose paper should be as small as possible, so as not to introduce unnecessary measurement errors. Place the polybenamide sheet with the sample on glass tubes with different radii of curvature, use the radius of curvature of the glass tube to characterize the bending radius of the composite fiber, and record the corresponding change in resistance value.

[0054] Test results: The axial conductivity of the composite fiber material without bending is 1500-2500 ...

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Abstract

The invention relates to the field of flexible material performance testing, in particular, relates to a device and method for measuring a change law of flexible material performance along with the bending radius, and can be used for measuring various flexible materials. The device comprises a plurality of tubular or cylindrical materials with different radii, and can provide a group of bending curvature radii changed in gradient for the flexible materials. With use of the measuring device, the change law of the flexible material performance along with increase or decrease of the curvature radius can be measured under different bending deformation. The device and method can aim at various flexible materials and a same sample, can relatively fast nondestructively measure the change law of various performance of the same sample in different bending deformation degrees under a condition of no damage to the sample, are not limited by material shapes and types, and have the advantages of good measurement repeatability and high precision.

Description

technical field [0001] The invention relates to the field of performance testing of flexible materials, in particular to a device and method for measuring the variation law of the performance of flexible materials with the increase or decrease of the bending radius under bending deformation, which can be used for measurement of various flexible materials. Background technique [0002] Flexible materials are widely used in contemporary people's life, industry and engineering. Flexible materials can also be called flexible composite materials. Flexible composite materials are composed of fiber reinforced materials and tough polymer matrix. Compared with thermosetting or thermoplastic polymer matrix composite materials, they have a larger deformation range, higher load capacity and good fatigue properties. This material is in The material exhibits low stiffness properties under low stress, but has relatively high strength and stiffness under high stress. At the same time, thro...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/00
Inventor 邰凯平雷浩赵洋靳群乔吉祥史文博姜辛
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI