Overview
A permeation cup is an experimental tool used to measure the permeation performance of materials. It consists of a transparent cup-shaped container and a permeation hole at the bottom. It is often used to measure the permeation ability of liquids, gases or Miscellaneous solutes in materials, and to evaluate the permeability, breathability or filtrating performance of materials.
Features
1. Suitable for self-supporting coatings and non-self-supporting coatings.
2. Support the wet cup method and the dry cup method test.
3. The test area is 25cm ².
Principle
The material to be tested is placed in a cup, injected with pressure or immersed in a liquid, and the permeability performance of the material is evaluated by observing the penetration of the liquid, measuring the penetration rate or liquid level change. Measure the water vapor-to-film pass rate by reducing or increasing the weight of the material contained in the cup over a specific period of time.
Applications
Building materials, agriculture
Standards
GB/T 17146、JG/T 309、JG/T 485、ISO 7783、ASTM D 1653
Steps
1. Put the material to be tested into the cup.
2. Inject a certain pressure or soak the liquid.
3. Observe the permeability of the liquid.
4. Measurement of liquid penetration rate or liquid level change.
Notice
• Self-supporting coatings can be tested directly, and non-self-supporting layers need to be tested with the help of permeability materials.
• When focusing on moisture permeability in a high humidity environment, the wet cup method is the main method.
• Cheers can be used in different programs or environments.
