Resilience force test method and resilience force test tool

A test method and technology of resilience, applied in the direction of applying stable bending force to test material strength, test material hardness, measuring device, etc., can solve the problems of roughness and great influence of the bending amount of the sample, and achieve a large test range , Simple and convenient operation

Active Publication Date: 2011-07-20
GUANGDONG SHENGYI SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no standard method for testing the resilience of materials in the industry. Most of the softness of materials is evaluated by judging the magnitude of resilience by hand feel; there are also similar methods for evaluating the softness of materials, such as placing strip samples on a plane, The part of the sample protrudes from the plane, and the softness is compared by the amount of bending of the sample under its own gravity within a certain period of time, but this method is relatively rough, and the sample is affected by air buoyancy and static electricity, and more importantly, for different The thickness of the material, due to the difference in thickness and quality of the material, the amount of bending of the sample has a great influence

Method used

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  • Resilience force test method and resilience force test tool
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  • Resilience force test method and resilience force test tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Take flexible copper-clad laminates A and B with the same specifications and different formulations, and after etching the copper foil, make a strip-shaped sample of 15mm×120mm.

[0045] Set the initial spacing of the compression mechanism to 30mm, the final spacing to 1mm, the compression rate to 50mm / min, and the holding time to 30s.

[0046] Fix the sample in the resilience test tool of the present invention respectively, start the test program, the compression mechanism automatically records the compression test resilience test curve, and analyzes the test curve to obtain the resilience and resilience retention coefficient respectively as shown in Table 1.

[0047] Table 1 Resilience and resilience retention coefficient of flexible copper clad laminates with different formulations

[0048] sample

[0049] Both the resilience and resilience retention coefficient of sample A are slightly smaller than that of sample B, so the softness of sample A is better th...

Embodiment 2

[0051] Take flexible copper-clad laminates C and D of different manufacturers with the same specification, and after etching the copper foil, make a strip-shaped sample of 15mm×120mm.

[0052] Set the initial spacing of the compression mechanism to 30mm, the final spacing to 1mm, the compression rate to 50mm / min, and the holding time to 30s.

[0053] Fix the sample in the resilience test tool of the present invention respectively, start the test program, and the compression mechanism automatically records the compression test resilience test curve, and analyzes the test curve to obtain the resilience and resilience retention coefficient as shown in Table 2.

[0054] Table 2 Resilience and resilience retention coefficient of flexible copper clad laminates from different manufacturers

[0055] sample

[0056] The resilience of samples C and D are the same, but the resilience retention coefficient of sample C is smaller than that of sample D, so the flexibility of sampl...

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Abstract

The invention relates to a resilience force test method and a resilience force test tool. The resilience force test method comprises the following steps: 1) making a material to be tested into a bar-shaped sample; 2) respectively fixing two ends of the sample on upper and lower compressing panels of upper and lower tools, placing the test position of the sample between the upper and lower compressing panels, and keeping the sample in a free bending state; 3) setting a compressing distance, a compressing rate and a lasting time of a compression mechanism, starting the compression mechanism, and utilizing the compression mechanism to automatically record a test curve of the size of the resilience force of the sample; and 4) analyzing the test curve, and acquiring the resilience force and the resilience force retention coefficient of the sample. The resilience force test method provided by the invention can be simply operated. By utilizing the resilience force test tool provided by the invention, the widest test scope is acquired, and the influence on a test result caused by holding the sample is avoided. The flexibility of the material can be evaluated according to the sizes of the resilience force and the resilience force retention coefficient which are acquired by using a compression test.

Description

technical field [0001] The invention relates to the field of flexible printed circuit board testing, in particular to a resilience testing method and the resilience testing tool. Background technique [0002] With the continuous development of electronic technology, flexible printed circuit (FPC) has been used more and more widely. FPC has excellent bending resistance and can be installed three-dimensionally in space. The elastic force and the rebound force have an impact on the installation reliability and operability of the FPC. In the case of other performances, the softer the material, the better. [0003] At present, there is no standard method for testing the resilience of materials in the industry. Most of the softness of materials is evaluated by judging the magnitude of resilience by hand feel; there are also similar methods for evaluating the softness of materials, such as placing strip samples on a plane, The part of the sample protrudes from the plane, and the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/40G01N3/20G01N3/02
Inventor 杨宏伍宏奎茹敬宏王志勇
Owner GUANGDONG SHENGYI SCI TECH
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