5 Compatibility and resistance

The compatibility and resistance of materials to chemicals, preparations of media, simulants and microorganisms as well as dynamic mechanical loads are determined in various tests. According to the product and application requirements, the materials are brought into direct contact with water and aqueous solutions (e. g. artificial sweat, saliva and salt solutions), disinfectants, cleaning and care products (e. g. creams and cosmetics), organic solvents, oils and fats and operating media (e. g. fuels) in accelerated processes or are exposed in various artificially generated atmospheres (e. g. exposure to amines, nitrogen oxides (NOx)). The accompanying changes in the physical material properties compared to the initial state are determined. In addition, absorption, migration and penetration effects of various media (e. g. static and dynamic water absorption, water penetration, water resistance) as well as degradation, decomposition, delamination processes and other failure phenomena and damage characteristics (e. g. crack formation, whitening) are considered.



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