Overview
A permeation cup is an experimental tool for measuring the permeation performance of materials, consisting of a transparent cup-shaped container and a bottom permeation hole. It is often used to evaluate the permeation ability of liquids, gases or solutes in materials, such as measurement of water permeability of concrete, bricks or soil. When used, the material is placed in the cup, injected with pressure or liquid, and the performance is evaluated by observing the change of permeation rate or liquid level.
Features
1. Suitable for self-supporting coatings and non-self-supporting coatings testing.
2. Support the wet cup method and the cheering method to adapt to different environment needs.
3. The test area is 10cm ², making it convenient for standardized operation.
Principle
Penetration cups observe the permeation of the liquid by placing the material to be tested into the cup and injecting pressure or liquid. Measure the permeation performance of the material by measuring the decrease or increase in the weight of the material in the cup and measuring the pass rate of water vapor or Miscellaneous gaseous substances to the film for a specific time.
Applications
Building materials, agriculture, paints, varnishes, coatings, films, coating systems
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 permeation 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.
5. Calculate permeability according to weight change.
Notice
• Ensure that the test environment meets the standard requirements, such as using the wet cup method in a high-humidity environment.
• For non-self-supporting coatings, a permeable material is used as the baseplate.
• Pay attention to time control during operation to accurately measure permeability.
