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Preparation method of sealant 180-degree peel strength sample

A technology of sample preparation and peel strength, which is applied in the preparation of test samples, measuring devices, instruments, etc., can solve the problems of prolonging the test cycle, canvas breakage, waste samples, etc., and achieve the goal of ensuring the test cycle and reducing the ratio of waste samples Effect

Inactive Publication Date: 2017-09-01
SHAANXI AIRCRAFT CORPORATION
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

In the actual test operation, after the samples prepared by this method are subjected to high-temperature aging, the exposed canvas becomes brittle after a long time of heating and aging in hot air. When the peel strength test is performed, the canvas often breaks ahead of time, resulting in waste samples , and it is possible to retest due to the failure of the test caused by too many waste samples, thereby prolonging the test period

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment approach

[0010] The method of the present invention will be further described below in conjunction with specific examples. In the test of the heat-air aging resistance of XM28-I sealant by 180°peel strength method, it is necessary to prepare the 180°peel strength sample of XM28-I sealant. Its implementation method is as follows:

[0011] A kind of sealant 180 ° peel strength sample preparation method,

[0012] Step 1, clean and dry the test piece; Step 2, clean the canvas and cut it flat to an appropriate size; Step 3, put the test piece into the groove of the lower template; Step 4, scrape the sealant on the test piece, along the groove Scrape the upper edge; step 5, apply the sealant on one end of the canvas, and the coating length is not less than 100mm; step 6, attach one end of the canvas to the rubberized surface of the test piece, and remove air bubbles; step 7 , assemble the template, and tighten the bolts of the upper and lower templates; Step 8, scrape the sealant on the ca...

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Abstract

The invention relates to a simple method for preparation of a 180-degree peel strength sample during sealant 180-degree peel strength testing after air aging. By using a diluted sealant as a protective coating, the sealant 180-degree peel strength sample prepared according to HB5249-1993 'Room temperature vulcanization sealant 180-degree peel strength test method' will not be aged or brittle after air aging, and the rate of waste samples is reduced.

Description

technical field [0001] The invention relates to a method for preparing a sealant performance test sample, in particular to a method for preparing a vulcanized sealant 180° peel strength sample. Background technique [0002] In order to investigate the 180° peel strength performance of the sealant, it is necessary to prepare the 180° peel strength sample of the sealant according to HB 5249-1993 "Test Method for 180° Peel Strength of Room Temperature Vulcanized Sealant". [0003] HB 5249-1993 "Test Method for 180° Peel Strength of Room Temperature Vulcanized Sealants" provides a set of molds for sample preparation, which consists of three parts: lower template, upper template, and fasteners. The sample making process consists of ten steps: the first step, cleaning and drying the test piece; the second step, preparing and processing the canvas; the third step, putting the test piece into the groove of the lower template; the fourth step, Scrape the newly mixed sealant on the t...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N19/04
Inventor 杨根军邢建伟李慧王宇魁张敬彤陈俊文轩晓楠吴君君张辉张海清许慧静
Owner SHAANXI AIRCRAFT CORPORATION
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