Wear resistance test of PTFE film composite terry cloth fabric

The wear resistance test of PTFE (Polytetrafluoroethylene) film composite terry cloth fabric is an important part of evaluating its durability and service life. Here is a detailed test process and method to help you understand how to conduct scientific and accurate tests.

1. Test purpose

By simulating the actual use environment, evaluate the wear resistance of PTFE film composite terry cloth fabric under repeated friction conditions, and determine whether it can meet the requirements of specific application scenarios.

2. Testing standards

Common wear resistance testing standards include:

1. ASTM D3884: Standard testing method for wear resistance of textiles.
2. ISO 12947: Determination of dynamic wear resistance of textiles.
3. GB/T 21196: Determination of wear resistance of textiles by Martindale method.

Select appropriate testing criteria according to specific needs. The following are the test steps based on the Martindale method.

3. Test equipment

1. Martindale Wear Resistant Meter: Used to simulate the wear of fabrics under different pressures and friction conditions.
2. Standard Abrasives: Wool felt or other designated materials are usually used as the friction medium.
3. Load Weight: Provides constant pressure (usually 12 kPa or adjusted as needed).
4. Counter: Record the number of friction cycles.
5. Light Source and Magnifying Glass: Used to observe surface changes after wear.

IV. Test sample preparation

1. Sample size: Cut the PTFE film composite terry cloth into a circular sample with a diameter of 108 mm.
2. Quantity: Prepare at least 5 samples per group to ensure data reliability.
3. Pretreatment: If the test requires, the sample can be pretreated such as cleaning and drying.

V. Test steps

1. Installation Sample:

   • Fix the sample to the sample clamp of the Martindale wear-resistant instrument to ensure smooth and wrinkle-free.
   • Use standard abrasive as friction medium and place it opposite the sample.

2. Set parameters:

   • Adjust the pressure to 12 kPa (or adjust according to the standard requirements).
   • Set the friction trajectory to Lissajous figure, which is a typical “8” shape motion.

3. Start the test:

   • Start the instrument and record the number of friction cycles.
   • Suspend the test at predetermined intervals (eg every 10,000 cycles) to check the wear condition of the sample.

4. Observation and Record:

   • Use light sources and magnifying glass to check the surface of the sample, including for damage, shedding or significant wear on the PTFE film.
   • Record specific descriptions and photos of the appearance changes of the sample.

5. Termination Conditions:

   • When the sample reaches a predetermined number of cycles or experiences obvious failure (such as membrane rupture, fiber breakage, etc.), stop the test.

VI. Results Assessment

1. Wear Grade:

   • Grades are classified according to the degree of wear on the sample surface, usually divided into slight wear, moderate wear and severe wear.
   • Refer to the wear grade table in the relevant standards.

2. Number of loops:

   • Record the total number of cycles from the start of the test to failure as a quantitative indicator of wear resistance.

3. Comparative Analysis:

   • Process the test results with ordinary terry cloth without composite PTFE filmComparatively, evaluate the improvement effect of PTFE film on wear resistance.

7. Precautions

1. Testing Environment: Ensure that the test is carried out under constant temperature and humidity conditions to avoid interference from external factors.
2. Repeatability: Multiple tests to verify the stability and consistency of the results.
3. Safety: Pay attention to safety when operating the instrument and avoid mechanical damage.

8. Conclusions and Suggestions

Based on the test results, it can be concluded whether the wear resistance of PTFE film composite terry cloth fabric meets expectations, and suggestions for improvement can be made. For example:

• If the wear resistance is insufficient, the thickness of the PTFE film can be optimized or the composite process can be improved.
• If the wear resistance is excellent, its application potential in high wear scenarios can be further explored.

I hope the above content will be helpful to your testing work! If you have any other questions, please feel free to add instructions.

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