What is ISO 2440 - Accelerated ageing test about?
ISO 2440 specifies, for flexible and rigid cellular polymeric materials, laboratory procedures that are intended to imitate the effects of naturally occurring reactions such as oxidation or hydrolysis by humidity. The physical properties of interest are measured before and after the application of the specified treatments.
Test conditions are only given for open cellular latex, both open- and closed-cell polyurethane foams, and closed-cell polyolefin foams. Conditions for other materials will be added as required.
The effect of the ageing procedures on any of the physical properties of the material can be examined, but those normally tested are either the elongation and tensile properties, or the compression or indentation hardness properties.
ISO 2440’s tests do not necessarily correlate either with service behaviour or with ageing by exposure to light.
If desired, the ageing conditions contained in this document can be applied to composite structures containing any of the above types of cellular material. This can be helpful in the investigation of possible interactions between cellular materials and other substrates. Composite constructions can be in the form of complete finished products or representative small specimens cut there-from
Who is ISO 2440 - Accelerated ageing test for?
ISO 2440 on polymeric materials is relevant to:
- Manufacturers of rubbers
- Health and safety bodies
- Service providers
- Any entity responsible for quality and testing of polymeric materials
- Chemical engineers
Why should you use ISO 2440 - Accelerated ageing test?
Polymers are materials made from long, repeating chains of molecules. Their properties are dependent on the kind of molecules and the way the molecules are bonded.
ISO 2440 specifies procedures, methods, requirements, and methods for testing cellular polymeric materials for rigidity and flexibility using accelerated ageing, which determines the duration of ageing at a specific temperature.
Overall, ISO 2440 is a comprehensive guide to provide methods for determining the ageing and flexibility of polymeric materials, so users will gain a comprehensive understanding of the process and the end product will be flexible, more durable and will be of superior quality.
