Copper Clad Laminate 90 ° Peel Test

Copper Clad Laminate (Copper Clad Laminate, referred to as "CCL") is a plate-shaped material made by impregnating electronic glass fiber cloth or other reinforcing materials with resin, covering one or both sides with copper foil and hot pressing. CCL is an important basic material for PCB.With the development of electronic information industry, copper clad laminate technologyPCB technology development and widely used. One of the important technical indicators of copper clad laminate is the adhesion strength of the copper clad layer. The higher the adhesion strength of the copper clad layer, the more stable the connection between the copper clad layer and the substrate, and the less likely it is to peel or fall off. The adhesion strength is characterized by peel strength. This application introduces90° Peel strength test.

The pneumatic double-push stretching fixture equipped with the Kunpeng test machine and90The peeling fixture can realize the rapid positioning and clamping of the sample before the test and the replacement after the test, which improves the convenience of operation, improves the test efficiency and greatly saves the test time. In addition, during the peeling test, it benefits from the special 90The high-precision slide rail of the peeling fixture and the synchronization device make the plate and the test machine axial always maintain 90The angle remains unchanged to ensure that the test process meets the standard requirements; in addition to the fixture, the high precision of the testing machine host and more than 1000HZThe acquisition frequency can completely record all the characteristic data in the stripping process, provide users with accurate and reliable test data, and cooperate with intelligent test software to provide various test curves such as single sample, multiple samples, double coordinates, etc. at the same time, so that different users can have good interactive experience and escort the research and development, quality and product control of enterprises..

Experimental part

1.1Instruments and Fixtures

BOYI 2025-001 electronic universal testing machine

500NPneumatic double push stretching fixture

90° Stripping Fixture

Smartest software

1.2analysis condition

Test temperature: room temperature25℃ or so

Load cell:1000N (0.5level) 

Loading test rate:50.8mm/min

1.3Sample and processing

In this test, the fixed bonding width is selected3.18mm sample, and the surface of the copper foil is reinforced with special tape. Peel the sample for a certain distance in advance. The peeling end shall ensure that the copper foil and the adhesive tape are well adhered to avoid division or edge damage. It shall ensure that no fracture occurs during the peeling process. At the same time, it shall ensure that the peeling end is sufficient and can be fully clamped by the upper clamp. The peeling test requires that the clamping end of the tester clamp is always in contact with the substrate.90±5Stripping within an angle of °.

2Test Introduction

UseBOYI 2025-001 electronic universal testing machineproceedTest, the sample is mounted on90° On the peeling fixture, the copper foil is clamped in the upper fixture, and the substrate is clamped in the lower fixture, the two are 90° Peel state, as shown below (Figure 1). to50.8mm/minrate of the test.Measure the force and displacement data during the peeling process, take the average peeling force during the peeling state of low peeling force, and obtain the peeling force and peeling strength data (Table1), and generate a peeling curve (Figure 2~3).

Figure1 TestSystem diagram (host, fixture)

3.Results and Conclusions

3.1Test results

 After the test, the sample90The load-displacement curve for the peel test is shown in (Figure 2.~3), during the peeling process, the slight force value fluctuation signal is captured by the host to form a stable peeling curve. Using the test software, data such as load and displacement can be obtained on the curve, and the average peeling strength can be obtained. Specific test results are as follows(Table 1).

Transverse	Vertical

Fig. 2 90 ° peeling curve (multiple samples)

Single sample	local amplification

Figure3 90°Peel Curve(single specimen)

Figure4 Sample peeling state

Table1.Test Results

From above(Table 1)The data and the state of the sample after stripping can be seen that during the whole test process, the sample stripping state is stable, the fluctuation is very small, and there is no abnormal stripping phenomenon.The average value of the results of the 5 samples is very close, and the difference between the maximum value and the minimum value is 0.1N/Within mm. From the results of this test can be reflectedKunpengBOYI 2025-001 electronic universal testing machinehigh precision and high stability.

4.Conclusion

 To sum up, Kun PengBOYI 2025-001 electronic universal testing machine,500NPneumatic double push stretching fixture and90° stripping fixture, can fully meet 《IPC-TM-650Test Methods Manual, Section2.4.8Section-The standard requirements for the peel strength of the metal clad plate, and the test is completed with high efficiency and high quality. Through the test system of high precision and high sampling rate, the mechanical data of copper clad laminate can be obtained, and it is stable and reliable, which is for copper clad laminate and PCBThe technological development of the industry is very important, which can provide data support and technical support for the product research and development, quality management, and the standardization and standardization of the industry.