What are the aging test methods for ePTFE membrane?

1. Thermal aging test
Test equipment: Use a constant temperature oven or thermal aging test chamber.
Test process: Place the ePTFE membrane sample in an oven or test chamber with a set temperature for a certain period of time. The temperature is usually determined according to the expected use temperature range of the membrane and relevant standards.
Test indicators: Take out samples regularly to detect changes in their physical properties such as tensile strength, elongation at break, hardness, etc.; observe changes in color and appearance; evaluate the attenuation of waterproof and breathable performance.
2. Ultraviolet aging test
Test equipment: Ultraviolet aging test machine, which can simulate ultraviolet radiation of different intensities.
Test process: Fix the membrane sample in the test machine and accept ultraviolet radiation of set intensity and time.
Test indicators: Similar to the thermal aging test, detect changes in physical properties, appearance, waterproof and breathable performance, etc.
3. Chemical aging test
Test equipment: Chemical reagent container or immersion tank.
Test process: Soak the membrane sample in a specific chemical reagent, such as acid, alkali solution, etc., for a specified time and temperature. Test indicators: observe the changes in the appearance of the film, detect changes in its weight and size, and evaluate the effects of chemical reagents on its physical properties and waterproof and breathable properties.
4. Humidity aging test
Test equipment: humidity test chamber, which can control humidity and temperature.
Test process: place the film sample in a test chamber with set humidity and temperature for a certain period of time.
Test indicators: focus on detecting changes in the physical properties and waterproof and breathable properties of the film, and observe whether there are mold, corrosion and other phenomena.
5. Comprehensive aging test
Test equipment: multi-functional aging test machine, which can simulate multiple aging factors at the same time.
Test process: place the film sample in the test machine, and apply multiple aging factors such as heat, ultraviolet rays, humidity, etc. at the same time.
Test indicators: comprehensively detect the changes in various performance indicators of the film under the combined action of multiple factors.