Rubber Compression Test (Method A)

Abstract Summary: This article introduces the use of the Kunpeng BOYI 2025 electronic universal testing machine, combined with a 10kN compression fixture, to conduct rubber compression performance tests according to Method A of "GB/T 7757-2009 Determination of Compression Stress-Strain Properties of Vulcanized Rubber or Thermoplastic Rubber." The test results show that the Kunpeng BOYI 2025 electronic universal testing machine can fully meet the requirements for rubber compression testing.

Keywords: Kunpeng BOYI 2025 Electronic Universal Testing Machine     Vulcanized Rubber   Thermoplastic Rubber   Compression Performance Test

Vulcanized rubber refers to rubber that has undergone vulcanization, characterized by stable viscosity 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 compression fixture equipped on the Kunpeng testing machine features good flatness, easy disassembly and replacement, and ample operating space, meeting the fixture requirements of the standard. Meanwhile, the main unit of the testing machine has a precision far exceeding the standard requirements. With a data acquisition frequency exceeding 1000Hz, it can fully record all characteristic data during the compression process, providing users with accurate and reliable test data. Coupled with intelligent testing software, it can simultaneously provide various test curves such as single sample, multiple samples, 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 2025-010   Electronic Universal Testing Machine

10kN Compression Fixture

Smartest Software

1.2 Analysis Conditions

Test Temperature: Room temperature around 22°C

Load Sensor: 10kN (Class 0.5)  

Loading Test Rate: 10mm/min

1.3 Samples and Treatment

In this test, cylindrical rubber samples with a diameter of 29.5mm and thickness of 12.5mm were selected, with three samples each.

Figure 1 - Test Samples

2. Test Introduction

The test was conducted using the BOYI 2025-010 electronic universal testing machine. The sample was placed at the center of the lower compression plate using auxiliary lines (see Figure 3), compressed at a rate of 10mm/min to 25% of the sample thickness, then returned to zero at the same speed. This constitutes one cycle, with a total of four cycles performed. Force and displacement data during the measurement process were recorded, and compression curves were generated. Figure 2

Test System Diagram (Main Unit, Fixture)   3 Sample Centering

Figure 3. Results and Conclusions

3.1 Test Results

The specific test results are shown in Table 1 below.

Table 1. Test Results

4 - Test Curve 1

Figure 5 - Test Curve 2

Figure 6 - Test Curve 3

Figure 7 - Comprehensive Comparison

Figure 8 - Displacement-Time Curve

Figure 9 - Load-Time Curve

Figure From the above (Table 1) data and test curves, it can be seen that the machine's cycle control is precise. During compression, the load continuously increases. Upon reaching the peak, during the return process, due to the rubber's rebound characteristics, there is hysteresis loss. The software can record the complete test curve throughout the process, providing an intuitive understanding of the force conditions during the test. It also allows acquisition of maximum force, stress, strain, displacement stroke, and other data for analysis. The test results demonstrate that the Kunpeng BOYI 2025-010 electronic universal testing machine's program control can achieve precise and timely switching, while maintaining high accuracy and stability.

4. Conclusion   The above test results indicate that the Kunpeng BOYI 2025-010 electronic universal testing machine with a 10kN compression fixture fully meets the requirements of Method A in "GB/T 7757-2009 Determination of Compression Stress-Strain Properties of Vulcanized Rubber or Thermoplastic Rubber." It efficiently and effectively completes 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 development, quality management, and industry standardization and normalization.

4.结论

上述试验结果表明，鲲鹏BOYI 2025-010 电子万能试验机10kN压缩夹具夹具可以完全满足《GB/T 7757-2009 硫化橡胶或热塑性橡胶压缩应力应变性能的测定》方法A标准要求，高效高质完成试验。通过高精度高采样率的测试系统，可以获得橡胶材料的各项力学数据，且稳定可靠，这对于橡胶材料的技术发展非常重要，能够为企业的产品研发、品质管理，以及该行业的标准化、规范化提供数据支持与技术保障。