GeoFlex™ geomembranes combine flexibility, elongation, and cold temperature resistance.
Layfield's GeoFlex™ uses next-generation catalyst technology that has been optimized to deliver flexibility with UV and chlorine resistance. GeoFlex™ geomembrane is a highly flexible lining material making detail work such as building tanks, attaching to structures, or creating corners an easy task. In addition to flexibility, GeoFlex™ has excellent resistance to both Slow Crack Growth (SCG) and Environmental Stress Cracking (ESCR) and is suitable for water and water-based effluent storage. GeoFlex™ exhibits high impact strength and puncture resistance and has outstanding resistance to low temperatures. Layfield's registered quality management system ensures superior consistency of product quality and reproducible performance. GeoFlex™ meets GRI GM-17 requirements and is suitable for a variety of primary and secondary containment applications.
What is Unique Cold Temperature Performance?
The new generation GeoFlex™ geomembrane exhibits a much higher Tensile Yield Elongation compared to standard LLDPE geomembranes. This translates into GeoFlex's ability to be far more tolerant and forgiving of "stressed" regions such as folds and bends and creases in real-life applications. GeoFlex™ offers far more "flexible character" under actual field conditions.
The permanent, irreversible deformation on yielding, which ultimately leads to localized thinning and cracking under stress, does not occur with GeoFlex™ until much higher elongation (strain). The higher slope of the stress-strain curve at the higher elongation is an indicator of a much higher “Strain Hardening Modulus.” In recent years, it has been established conclusively that the magnitude of the SHM correlates very well with Slow Crack Growth/ESCR resistance. In geomembrane applications, exposure to various agents can pose as “environmental accelerants” to these failure mechanisms.
Cold Temperature Performance
Due to the highly flexible nature of GeoFlex™, a new laboratory test, called Low-Temperature Compression Fatigue Test (LTCFT), was developed to ascertain and differentiate the flexibility performance. In this test, a typical “dog-bone” specimen is subjected to repeated compressive-fatigue (bending) for tens to hundreds of thousands of cycles until failure. The test is performed at -60 °C. Another top grade LLPDE, which was also tested, failed at 30,000 cycles due to localized thinning or yielding. Please contact Layfield for more information on this test.
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