This standard specifies the T peel test device, sample preparation, test steps and test result processing of adhesive specimens of flexible materials bonded to flexible materials. This standard is applicable to the determination of the T peel resistance of adhesives under specified conditions for adhesive specimens composed of two identical or different flexible materials. GB/T 2791-1995 Adhesive T peel strength test method Flexible material to flexible material GB/T2791-1995 Standard download decompression password: www.bzxz.net

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National Standard of the People's Republic of China
GB/T2791—1995
Adhesives, T peel strength test method for a flexible-to-flexiblic tcst specimen assembly1995-12-20Promulgated
State Bureau of Technical Supervision
1996-08-01Implementation
National Standard of the People's Republic of China
Adhesives, T peel strength test method for a flexible-to-flexiblic tcst specimen assembly！ Contents and scope of application
G0/T2791-1995
Technically specifies the number of test specimens, test specimen preparation, test requirements and test principles for a type of adhesive bonded to a material of a certain grade.
This standard is used to determine the adhesion strength of two or more materials of the same grade under certain conditions.
2 Reference standards
GB298 Test conditions and test specifications 3 Principles
The test quantity of the adhesive bonded to the performance material is listed in the standard, but the test range is not strictly controlled according to the control line and the degree of separation between the test specimens and the cavity is not required. 2.1 Test the device
H live negative micro-solid, the actual head can be divided into certain pharmacological rates and apply a single force to the whole seat of the world! The equipment is powerful and the release system and indication are correct: the error of the indication value is small, the response time of each installation should be from color to color, and the accuracy of other responses should not be exaggerated! When the test group is destroyed, the force to be measured is reached. The test column must be full of 1%~standard load! irl
2 total loss
head can hold the test sample as shown in the figure
National Technical Supervision Bureau 1995-12-20 approved 1996-08-01 store
5 test sample
25±0. 5
GB/T 2791—1995
" refers to the joints of sexual materials and sexual materials
T brush separation test
The original degree of payment shall be based on the principle that the tensile strength shall not be allowed, but the square degree shall not exceed 3m# and shall not produce agricultural cracks including bending angle: the size shall be accurately measured and the test shall be inferred by the person in charge. 5.2 Trial production
According to the product description of the test piece, the length of the test piece shall be 15
1: The paint surface shall be clear and the vibration resistance shall be achieved. The second method is to place a thin strip of material in a short area - a protective strip of material) to prevent the material from being damaged. The test material shall not be used ... P It is best to have a regular reporting schedule. In order to obtain a uniform pressure distribution throughout the entire glue joint, the machine plates should be parallel. When this cannot be achieved, the press machine 11 will produce a favorable situation. The gasket is more likely to be 10m. The degree of the medicine is 4 degrees. At this time, the main force can reach MP:
Min detailed puncture Min 5 A force will be used to connect the net into a small independent pulling material cavity into an expansion specimen, and then the specimen will be evenly divided from the test specimen. The lower leaf star 2 may reduce the influence of heat and machine force on the glue joint. The upper half of the expansion specimen on the long side of the specimen must be removed - and the 12 part of the test station is used to measure the uniformity of the adhesive layer.
53 Number of specimens
E Conditioning and test environment
G/T 27911995
The specimens shall be conditioned and tested in the standard environment specified in GB2918. The time for conditioning shall not be less than 2t.
Test steps
Separate the test pieces and place them in the upper and lower holders as shown in Figure 1 (b). The positions shall not be moved to ensure that the applied tensile force is evenly distributed over the width of the specimen. The testing machine shall be operated so that the upper and lower holders are separated at a rate of 1G0+13 mm/min.
The test stripping length shall be at least 125mm. The recording device shall simultaneously draw the peeling load curve. Note that the adhesive shall not be damaged or the adherend shall be damaged by acid.
8 Test result processingbZxz.net
For each sample, the relationship between the force and the peeling length is determined by the average peeling length, and the unit is . The peeling length to be calculated should be at least 100mm, excluding the initial 25mm. The average peeling force can be calculated by measuring the average peeling force using the integral method with the same height of the strip (see Figure 2). If more accurate results are required, other appropriate methods can be used. Force
H length 1mm:
Figure? Typical separation force curve
Record the maximum and minimum values ​​of the separation within the separation length of 100mm, and calculate the corresponding separation strength value, r
Batch:
High strength typical. kN/m
To high force, V;
Test width mms,
Calculate the average separation strength of all test connections, the minimum and maximum separation strength. Note 2: If necessary, the values ​​of the separation lengths other than the specified separation length can be recorded separately, and they cannot be included in the calculation of the average value in the subsequent test.
3 Test report
The test report includes the following parts:
8. Referenced standard number:
GB/T2791—1995
Complete identification of the test adhesive, including type, source, product number, batch or lot number, deformation, etc.: description of the test material, length, size, type of material and surface treatment method; description of the bonding process, including the test method of the adhesive, drying or curing conditions, temperature and pressure of the bond: thickness of the finished adhesive: complete description of the test piece, including size, structure and number, condition before the test and test environment! Wide head separation speed pad
Determination of the average separation force point method
Each test Zen separation strength record value, lack of minimum value and mean value with their maximum average signal. K/m is used as the position to sort the type of sample damage, that is, adhesion chain block, cohesion or damage by special materials: any situation that may affect the test results and the provisions of the steps of the additional remarks,
This standard is proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Shanghai Mineral Products Research Institute. This standard was drafted by Shanghai Rubber Products Research Institute. The main initiator of this standard is Liu Qianling.
This standard was first issued in 1981 and revised in 1991.
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