Polymer chemical resistance & stress cracking
Define actual chemicals, concentration, temperature, stress, time and pre/post acceptance properties. Immersion, environmental stress cracking, volatile loss and gel fraction answer distinct questions. Chemical resistance does not establish biological safety or migration compliance.
Sample considerations
- ASTM D543: Reagent concentration, duration, temperature, applied stress and pre/post properties
- ASTM D1693: PE grade, bent specimen, reagent and temperature
- ISO 175: Chemical, concentration, time, temperature and pre/post properties