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GB/T 2791-1995 PDF English

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GB/T 2791-1995: Adhesives, T peel strength test method for a flexible-to-flexible test specimen assembly
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GB/T 2791: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB/T 2791-1995English70 Add to Cart 0-9 seconds. Auto-delivery Adhesives, T peel strength test method for a flexible-to-flexible test specimen assembly  
GB 2791-1981English199 Add to Cart 2 days Adhesives--The method for determination of T-peel strength (metal to metal) Obsolete

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GB/T 2794   GB/T 2792   GB/T 2790   GB/T 6328   

GB/T 2791-1995: Adhesives, T peel strength test method for a flexible-to-flexible test specimen assembly


---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT2791-1995
GB ICS 83.180 G 38 NATIONAL STANDARD Replacing GB 2791-81 Adhesives, T Peel Strength Test Method for a Flexible-to-flexible Test Specimen Assembly Issued on. DECEMBER 20, 1995 Implemented on. AUGUST 1, 1996 Issued by. State Bureau of Technical Supervision

Table of Contents

1 Subject Content and Application Scope... 3 2 Normative References... 3 3 Principle... 3 4 Device... 3 5 Specimen... 4 6 State Adjustment and Test Environment... 5 7 Test Procedures... 5 8 Treatment of Test Results... 5 9 Test Report... 6 Additional Information... 7 Adhesives, T Peel Strength Test Method for a Flexible-to-flexible Test Specimen Assembly 1 Subject Content and Application Scope This standard specifies the device, specimen preparation, procedures and results treatment for T peel test on bonding specimens of flexible-to-flexible materials. This standard is applicable to the determination of the anti-T peeling performance of adhesives for bonding specimens that are composed of 2 kinds of same or different flexible materials, under specified conditions. 2 Normative References GB 2918 Plastics - Standard Atmospheres for Conditioning and Testing 3 Principle For T peeling test on bonding of flexible-to-flexible materials, apply the peeling force at the non-bonding ends of the specimens, so as to peel them along the bonding line. 4 Device 4.1 Device for tensile test The device has appropriate loading range. Its chuck is able to separate and apply tensile force, at a constant rate. This device shall be equipped with force measuring system and indication recording system. 4.2 Chuck The chuck is able to firmly clamp the specimen (see Figure 1b). 5 Specimen 5.1 Materials to be bonded The thickness of a flexible material shall be able to withstand the predicted tensile force. The thickness is uniform and does not exceed 3mm. 5.2 Specimen preparation Carry out the surface treatment over the specimen and use adhesives in accordance with the product instructions of the adhesive. Apply adhesive on each piece of test block to be bonded, along the whole-width. The adhering length is 150mm. 5.3 Quantity of specimen The specimen quantity of each batch number shall not be less than five. 6 State Adjustment and Test Environment Specimens shall be performed for state adjustment and test in standard environment, according to the provisions specified in GB 2918. 7 Test Procedures Separate the non-bonded end of the flexible test block. Symmetrically clamp them into the high and low holders according to Figure 1(b). The position being clamped is unable to slip, so as to guarantee that the tension being applied can be uniformly distributed on the specimen in width. Start the testing machine to separate high and low holders with a speed of 100 ± 10 mm/min. 8 Treatment of Test Results For each specimen, determine the average peeling force from the relation curve of peeling force AND peeling length, in unit of N. The peeling length used to calculate the peeling force shall be at least 100 mm, but excluding the initial 25mm. 9 Test Report The test report shall cover the following items. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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