Rubber Tear Test (Right-Angle Specimen)

Abstract: This article introduces the use of the Kunpeng BOYI 2025 electronic universal testing machine, combined with a 500N pneumatic double-push tensile fixture, to conduct rubber tear tests according to the "GB/T 529-2008 Determination of Tear Strength of Vulcanized Rubber or Thermoplastic Rubber (Trouser, Right-Angle, and Crescent-Shaped Specimens)". The test results show that the Kunpeng BOYI 2025 electronic universal testing machine can fully meet the requirements for rubber tear testing.

Keywords: Kunpeng BOYI 2025 electronic universal testing machine Vulcanized rubber Thermoplastic rubber Tear strength test

Vulcanized rubber refers to rubber that has undergone vulcanization, characterized by stable adhesion and resistance to breaking. Most rubber products are made from this type of rubber. Due to its excellent elasticity and toughness, rubber products are widely used in machinery, automotive, electronics, medical, construction, aerospace, and other fields, playing a significant role in human production and life.

The pneumatic double-push tensile fixture equipped on the Kunpeng testing machine can continuously provide a constant clamping force during the tearing process. As the specimen stretches and thins during tearing, the pneumatic fixture can firmly hold the sample without slipping or detachment. Additionally, with the foot switch, quick positioning and clamping before testing and return and replacement after testing can be achieved, improving operational convenience and testing efficiency, greatly saving test time. The fixture is also equipped with a throttle valve to adjust the clamping speed, avoiding excessive prestress and ensuring result accuracy. Besides the fixture, the high precision of the testing machine's main unit and a data acquisition frequency exceeding 1000Hz can fully record all characteristic data during the tearing process, providing users with accurate and reliable test data. Coupled with intelligent testing software, it can simultaneously provide various test curves such as single specimen, multiple specimens, and dual coordinates, offering a good interactive experience for different users and safeguarding enterprise R&D, quality, and product control.

      1. Test Section

1.1 Instruments and Fixtures

BOYI 2025-001 Electronic Universal Testing Machine

500N Pneumatic Double-Push Tensile Fixture

Smartest Software

1.2 Analysis Conditions

Test temperature: approximately 22°C at room temperature

Load sensor: 1kN (Class 0.5)

Loading test speed: 500mm/min

1.3 Samples and Treatment

In this test, two types of rubber specimens with a thickness of 2mm were selected. The specimens were cut into right-angle shapes according to the standard, with 5 pieces each.

Figure 1 - Test Sample #1

Figure 2 - Test Sample #2

2. Test Introduction

The test was conducted using the BOYI 2025-001 electronic universal testing machine. The cut samples were clamped in the upper and lower fixtures and tested at a speed of 500mm/min. Force and displacement data were measured during the process to generate tear curves.

Figure 3. Test System Diagram (Main Unit, Fixture)

3. Results and Conclusions

3.1 Test Results

The specific test results are shown in Table 1 below.

Table 1. Test Results

Figure 4 - Test Curve #1

Figure 5 - Test Curve #2

Figure 6 - Post-Test Sample #1

Figure 7 - Post-Test Sample #2

From the above (Table 1) data and test curves, it can be seen that after the test starts, the load continuously rises to the maximum force point. After the sample is torn, the force value decreases. The software can record the complete test curve throughout the process, allowing acquisition of maximum force, stress, displacement stroke, and other data for analysis. The test results reflect the high precision and stability of the Kunpeng BOYI 2025-001 electronic universal testing machine.

4. Conclusion

The above test results indicate that the Kunpeng BOYI 2025-001 electronic universal testing machine and the 500N pneumatic double-push tensile fixture fully meet the requirements of the "GB/T 529-2008 Determination of Tear Strength of Vulcanized Rubber or Thermoplastic Rubber (Trouser, Right-Angle, and Crescent-Shaped Specimens)" standard, efficiently and effectively completing the test. Through a high-precision, high-sampling-rate testing system, various mechanical data of rubber materials can be obtained reliably and stably. This is very important for the technological development of rubber materials and can provide data support and technical assurance for enterprise product R&D, quality management, and the standardization and normalization of the industry.