Investigating the role of anionic surfactant and polymer morphology on the environmental stress cracking
(ESC) of high-density polyethylene.
In order to investigate the susceptibility of different materials or a number of chemical environments to environmental stress cracking
or premature ruptures, it is possible to use monotonic creep tests (ref.
Optimization of Petaloid Base Dimensions and Process Operating Conditions to Minimize Environmental Stress Cracking
in Injection Stretch Blow Moulded PET Bottles," PhD Thesis, RM1T University, Australia (2008).
Test Subject of lest method method ASTM D Environmental stress cracking
of ethylene plastics: 1693 bent strip ESCR (see Fig.
High levels of stress also lower a product's impact strength and can contribute to environmental stress cracking
and diminished performance at high or cycling temperatures.
Polyether polyurethanes, while hydrolytically stable, are subject to oxidative degradation in several forms, including environmental stress cracking
and metal ion oxidation.
The absorption of chemicals into stressed pipes and fittings leads to failure due to what is termed environmental stress cracking
This phenomenon is known as environmental stress cracking
The new UHP grades, PFA-Flex X8502 for extrusion and 8515 for injection molding, are also said to be more resistant to environmental stress cracking
(ESCR) than conventional PFAs.
Arkema says, "Compared to many of the commercial polymers now used for these applications, the new polymers offer exceptional resistance to environmental stress cracking
(ESC), excellent optics, excellent Gamma sterilization resistance, and good melt processability .
In the case of environmental stress cracking
, a certain amount of ductile deformation occurs which is governed by the nature of the test media.
HDPE resin grades with long-chain branching are known to offer improved resistance to long-term creep, stress rupture, environmental stress cracking
(ESC), and fatigue.