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Measurement of Gas and Vapor Permeability in Flat Polymer Structures
1 /3Pages

Measurement of Gas and Vapor Permeability in Flat Polymer Structures

Measurement of Gas and Vapor Permeability in Flat Polymer Structures
1 /3Pages

Catalog excerpts

Measurement of Gas and Vapor Permeability in Flat Polymer Structures-1

Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Measurement of Gas and Vapor Permeability in Flat Polymer Structures Permeability is a crucial property for various polymer film applications, including packaging, medical devices, and protective coatings. It signifies the ability of a material to allow gases, vapors, or liquids to pass through its structure. This report explores two standard methods for measuring the permeability of oxygen, carbon dioxide, water vapor, and organic vapors through flat polymer structures: the continuous-flow method and the lag-time method. The American Society for Testing and Materials (ASTM) International provides standardized procedures for permeability measurements. ASTM D 3985-81 outlines the method for measuring oxygen and carbon dioxide gas permeability, while ASTM E 96-80 details the measurement of water vapor permeability. Permeability of organic vapors is often determined using similar principles, with commercially available equipment from companies like MAS Technologies Inc. and Modern Controls Inc. C403H Oxygen /Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor and infrared water vapor sensor. It is designed and manufactured according to ASTM D3985、ASTM F1249,ISO 15106-2

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Measurement of Gas and Vapor Permeability in Flat Polymer Structures-2

Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 C360H Water Vapor Transmission Rate Test System, is designed and manufactured based on the gravimetric determination method and conforms to the requirements of ASTM E96. Continuous-Flow Method This technique involves exposing one side of a polymer film sample to a constant flow of the permeant gas or vapor. The permeant diffuses through the film, and the permeation rate is measured on the opposite side. Fick's second law of diffusion governs this process, and its solution allows for the calculation of the diffusion coefficient...

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Measurement of Gas and Vapor Permeability in Flat Polymer Structures-3

Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Both methods involve analyzing the obtained data (flow rate vs. time for continuous-flow and permeant concentration vs. time for lag-time) to calculate the relevant parameters. The continuous-flow method often utilizes linear regression techniques to determine the slope for calculating D. The lag-time method relies on identifying the intercept of the steady-state line with the time axis to obtain the lag time (θ). The continuous-flow and lag-time methods offer valuable tools for characterizing the permeability of gases and vapors...

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All Labthink Instruments Co., Ltd. catalogs and technical brochures

  1. C610M

    3  Pages

  2. C690H

    4  Pages

  3. C130H

    4  Pages

  4. COF-P01

    2  Pages

  5. VAC-V2

    3  Pages

  6. C230H (2025)

    4  Pages

  7. C610H

    3  Pages

  8. C206H

    4  Pages

  9. C406H

    5  Pages

  10. C403H

    5  Pages

  11. C 681M

    1  Page

  12. C660B (2025)

    3  Pages

  13. C632M

    3  Pages

  14. C630H

    3  Pages

  15. C620H

    3  Pages

  16. C 640

    4  Pages

  17. C 660M

    3  Pages

  18. C306H (2025)

    4  Pages

  19. C203H

    4  Pages

  20. BTY-B3P

    2  Pages

  21. C360M

    4  Pages

  22. C632B

    3  Pages

  23. C190H

    3  Pages

  24. C390H

    4  Pages

  25. C360H

    4  Pages

  26. C660M

    3  Pages

  27. C303H

    4  Pages

  28. C106H

    5  Pages

  29. C640

    4  Pages

  30. MXD-02

    2  Pages

  31. CHY-C2A

    2  Pages

  32. C611B

    2  Pages

  33. CH130

    4  Pages

  34. C 631 H

    2  Pages

  35. C660 B

    3  Pages

  36. VAC-VBS

    3  Pages

  37. XYD-15K

    2  Pages

  38. C360

    4  Pages

  39. C631 H

    2  Pages

  40. FST-02

    2  Pages

  41. C681 M

    2  Pages

  42. C230

    4  Pages

  43. C631H

    2  Pages

  44. C612M

    3  Pages

  45. SLY-SI

    2  Pages

  46. C360 M

    4  Pages

  47. C611M

    2  Pages

  48. C330H

    4  Pages

  49. Leak Tester

    3  Pages

  50. Tensile Testers

    19  Pages

  51. FDI-01

    5  Pages

  52. DIN 75201

    2  Pages

  53. Abrasion Test

    2  Pages

  54. Torque Meter

    2  Pages

  55. Leak Detector

    2  Pages

  56. Torque tester

    2  Pages

  57. Impact tester

    2  Pages

  58. Gas Analyzer

    2  Pages

  59. TOQUE TESTER

    1  Page

Archived catalogs

  1. C611M

    2  Pages

  2. C306H

    3  Pages

  3. C230H

    4  Pages

  4. Leak Tester

    2  Pages

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.