Plastics—Film and sheeting—Determination of gas-transmission rate—Part 2:Equal-pressure methods (English Version)
The new standard is based on the 2003 version of ISO 15105-2 and has been revised locally, with significant improvements in three major areas that are suitable for my country's industrial needs:
Transformation direction | Missing items in international standards | my country's transformation plan |
---|---|---|
Measurement compatibility | Composite material testing requirements are not considered | New co-extruded material and plastic coating material test specifications |
Instrument adaptability | Adopt ISO4593 thickness specification | Optimized to GB/T6672, which is more suitable for film testing |
Safety Implementation Standards | Includes detailed warning clauses | Delete safety warning information that does not affect data fidelity |
Selection principles for heavy equipment dedicated to moisture permeability testing:
Application case: The average oxygen permeability of PET/AL composite film is 13cm³/(m2·d), and the deviation of each point is less than 7%, which meets the TS16949 automotive standard.
Abnormal type | Occurrence scenario | Response method |
---|---|---|
Background interference | Volatile components of sealing grease are detected | 60℃ vacuum degassing treatment is required before using non-migrating silicone sealing ring |
Thermodynamic fluctuations | Synchronous calibration error of multi-channel equipment | Configure cross-measurement of standard reference films from the same batch |
Project implementation suggestions: Complete the raster scanning of the sampling area thickness in advance according to GB/T6672 to ensure that the thickness ratio of the sample does not exceed 1:1.2
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