TEST METHOD FOR ENVIRONMENTAL STRESS CRACK RESISTANCE (ESCR) OF PLASTICS TIGHTHEAD DRUMS NOT EXCEEDING 60 GAL (227 L) IN RATED CAPACITY
This Malaysian Standard provides an indication of the environmental stress crack resistance of plastic tighthead drums as a summation of the effects of container design, resin, manufacturing conditions, field performance, and other factors.
This test method may be used to evaluate a plastic drum's resistance to failure by cracking when in the presence of chemical and physical stresses.
Two procedures are provided as follows:
Procedure A—Internal pressure stress crack resistance method to nonyl phenoxypoly (ethyleneoxy) ethanol solution, a stress cracking reagent. The internal pressure is controlled at a constant elevated pressure and temperature.
Procedure B—Top-load stress crack resistance method to nonyl phenoxypoly ethanol, a stress cracking reagent. The compressive top load is controlled at a constant weight while maintaining an elevated temperature.
