In-Plane Porometer
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Description
The sample chamber of the In-Plane Porometer is such that gas is allowed to displace liquid in pores to move radially from the center to the periphery of a sheet shaped sample. Suitable sample configurations give in-plane pore structures of multi-layered materials.
Principles of Operation
A wetting liquid is allowed to spontaneously fill the pores in the sample and a non-reacting gas is allowed to displace liquid from the pores in the radial direction. The gas pressure and flow rates through wet and dry samples are accurately measured. The gas pressure required to remove liquid from pores and cause gas flow is given by:
γ = surface tension of liquid θ = contact angle of the liquid ρ = differential gas pressure D = pore diameter
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Applications
Pore structure of a sheet like material in its plane (x-y plane) determines the radial flow of fluids in the material and the barrier properties of such pores. The relative permeation rates in the x-y plane and in the thickness direction (z-direction) determine suitability of the material for many applications. Materials tested include textiles, diapers, biotech products, pharmaceutical products, household products, and paper for control of ink flow for high quality prints.
Applicable industries are:
For more information about the applications please see our paper on in-plane analysis and our other technical papers.
Features
- Allows testing of samples under compressive stress and elevated temperatures
- Determines gas permeability in x-y plane
- Nondestructive testing
- Wide range of acceptable sample sizes and types
Specifications
For more information see our In-Plane Porometer Brochure, Porometers Brochure, or Characterization of Pore Structure Brochure.