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Venting Membrane Performance Test Report
1. Air Permeability Test
Test Procedure
- Clamp sample in gas permeability tester
- Apply controlled air pressure on one side
- Measure airflow rate through the membrane over time
Critical for applications requiring pressure equalization (electronics, packaging)
2. Water Resistance Evaluation
Test Methods
- Water column test: Seal membrane over tube, fill with water, record leakage time
- Spray test: Standardized nozzle simulates rain, check moisture penetration
3. Temperature Tolerance
Test Protocol
- Expose samples to extreme temperatures (-40°C to 120°C)
- Duration: 24-72 hours in thermal chamber
- Post-test evaluation of air permeability and water resistance
Check for cracks/warping that may compromise performance
4. Chemical Resistance
Test Procedure
- Immerse in common substances (oils, solvents, cleaning agents)
- Specified exposure period
- Rinse, dry, compare performance to untreated samples
Ensures suitability for harsh environments (automotive, medical)
5. Mechanical Durability
Test Methods
- Tensile test: Pull samples until tear to measure strength/elongation
- Abrasion test: Sandpaper/rubbing machine simulates wear