Method for detecting flowing property of hot melt adhesive for flexible flat cable

A flexible, flat and flowable technology, applied in the direction of flow characteristics, measuring devices, instruments, etc., can solve the problem of inability to measure the fluidity of hot melt adhesives for flexible flat cables, affect the quality of flexible flat cables, and fail to correctly screen hot melt adhesives Glue and other problems, to achieve the effect of low test cost, perfect performance evaluation, high accuracy

Active Publication Date: 2019-03-15
广东莱尔新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is currently no standardized detection method for this, and it is impossible to measure whether the flowability of the hot melt adhesive for flexible flat cables is qualified, and it is impossible to correctly screen the hot melt adhesive for flexible flat cables, which directly affects the flexible flat cable products. the quality of

Method used

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  • Method for detecting flowing property of hot melt adhesive for flexible flat cable
  • Method for detecting flowing property of hot melt adhesive for flexible flat cable
  • Method for detecting flowing property of hot melt adhesive for flexible flat cable

Examples

Experimental program
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Embodiment

[0060] Embodiment (measuring fluidity of hot melt adhesive product for flexible flat cable)

[0061] Follow the steps below:

[0062] (a) spray hot melt adhesive films on the surface of multiple quartz plates 3, the thickness is 60um, and make multiple hot melt adhesive films 2 to be tested;

[0063] (b) place the quartz plate 3 and the hot melt adhesive film 2 to be tested at a temperature of 25° C. and a humidity of 50%, and balance for 24 hours;

[0064] (c) Place the quartz plate 3 of step (b) together with the hot melt adhesive film 2 to be tested on the sample stage 4 of the thermomechanical analyzer. The thermomechanical analyzer is provided with a probe 1 facing the sample stage. 4. The hot-melt adhesive film 2 to be tested faces the probe 1, and the thermomechanical analyzer is in the range of 25°C to 250°C, at a heating rate of 10°C / min, through the quartz plate 3 to test the hot-melt adhesive film 2 to be tested. Heating, controlling the force system through the t...

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Abstract

The invention provides a method for detecting the flowing property of a hot melt adhesive for a flexible flat cable. The method comprises the following steps: (a), preparing a to-be-detected hot meltadhesive film; (b), standing and balancing; (c), heating the to-be-detected hot melt adhesive film through a thermal mechanical analyzer, controlling the constant output pressure of a probe to be onevalue between 400 mN and 600 mN to the to-be-detected hot melt adhesive film, choosing a test result; (d), repeating the step (c), setting the constant output pressure to be one value between 600 mN and 800 mN; (e), repeating the step (c), setting the constant output pressure to be one value between 800 mN and 1000 mN; (f), testing the existing qualified hot melt adhesive to acquire an eligibilitycriteria for evaluating the flowing property of the hot melt adhesive; (g), comparing the test result with the eligibility criteria, and judging whether the to-be-detected hot melt adhesive film is qualified. The method has the characteristics that the flowing property of a hot melt adhesive product is conveniently monitored randomly and stably, the performance evaluation of the hot melt adhesiveis improved, and then the hot melt adhesive for the flexible flat cable is further screened.

Description

technical field [0001] The invention relates to a method for detecting flow performance of a hot melt adhesive for flexible flat cables, and belongs to the technical field of material analysis. Background technique [0002] Existing flexible flat cables are coated with hot-melt adhesive to improve the fireproof insulation effect of the cables and protect the metal wires. However, the production quality of hot-melt adhesives for flexible flat cables is uneven. Some hot-melt adhesives with excessive fluidity will appear in the process of making flexible flat cables. For a period of time, there will be a phenomenon of signal transmission drop, metal conductor detachment, and glue overflow, which will have a great impact on the quality of flexible flat cable products, and even lead to batches of flexible flat cables being unqualified. These phenomena will become more obvious under the condition of higher pressure. However, there is currently no standardized detection method fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00
CPCG01N11/00
Inventor 李政郭锟怡彭彩霞
Owner 广东莱尔新材料科技股份有限公司
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