Hot air aging (DIN 53508)

Rubber ages when exposed to external influences. The factors that change the material are sunlight, heat, oxygen, ozone or moisture. When a rubber compound ages, this manifests itself in cracking or embrittlement, among other things. When such material damage occurs, it can no longer be repaired.

In order to obtain information on temperature resistance, the test object is stored in heating cabinets . This increases the aging process . A comparison of the material properties (e.g. hardness , tensile strength , elongation at break, etc.) with the properties before artificial aging provides information on heat resistance.

Synonyms: Storage under elevated temperature