materials feature | Oil & gas Pipe made
from Arkema’s castor oil-
derived Rilsan PA11 has been used to connect landfill gas to a local gas
distribution system
from their cable jacketing materials. The new Irogran materials contain a UV package that
is not listed as a substance of very high concern (SVHC) under Europe’s Reach regulations. The additive helps wire and cable manufacturers improve performance and comply with stringent environmental standards. Ahead of the launch, Huntsman tested the perfor-
mance of the materials. Both grades surpassed industry standard UV tests, it said. The two grades are Irogran A 85 P 4394 UV DP, which has a hardness of 85 Shore A, and Irogran A 92 P 4637 UV DP, which has a hardness of 92 Shore A. Solvay has added three new grades of Cogegum
silane-grafted, halogen-free flame retardant – including one for oil and gas applications. “These new products meet a growing demand for higher performing, safer and more sustainable cable sheathing and wire insulation materials in demanding industrial market segments such as oil and gas,” said Luigi Dalpasso, senior vice president of cross-linkable compounds for Solvay Specialty Polymers. Cogegum GFR 903 is a sheathing grade targeted at
stacked vertically at defined angles and fused together, it produces a very stable composite, says AOG. For Evonik, the oil & gas industry is an attractive
growth market and an important innovation field – to which it supplies its Vestamid polyamide 12 as a pipe material. “AOG is an excellent strategic match for Evonik,” said
Bernhard Mohr, head of venture capital at Evonik. “Its unique pipe technology and Evonik’s high performance polymer portfolio enable us to develop new solutions for the industry.”
Cable protection Huntsman has developed two UV protected grades of thermoplastic polyurethanes (TPUs) for use in offshore, oil and gas, and mining wire and cable applications. The polyether-based TPU materials – part of Huntsman’s Irogran product range – are designed for jacketing the cables of heavy duty pieces of equipment, which have to function in harsh, abrasive and outdoor environments, and are exposed to the elements. Over time, exposure to ultraviolet light can cause
cabling materials to degrade, losing performance in tensile strength, abrasion and elongation. On oil rigs, offshore wind farms and in underground applications, any form of deterioration in cable quality could have costly consequences. Huntsman’s innovations were developed in response
to requests from customers in the Americas, who were asking for increasingly demanding performance levels
38 PIPE & PROFILE EXTRUSION | July/August 2016
special cables in oil and gas and the chemical industry that must meet NEK TS 606 and IEC 60092-360 require- ments, such as in offshore installations. The compound provides high flame retardancy, a low calorific potential and intumescent char forming. It is particularly resistant to hydrocarbon-based drilling muds as well as water- and oil-based fluids. In addition, its high flexibility facilitates the handling and routing of the cables. The new grades can be extruded at high speed on
conventional equipment used for thermoplastic cable and wire insulation. In combination with different catalyst masterbatch grades, supplied by Solvay, they are curable at ambient temperature. The high performance of the compounds can be custom-matched to specific thermal, weathering and long-term ageing requirements.
Capturing landfill gas Nylon 11 pipe has been used to connect landfill gas to the local gas distribution system. Pipes and fittings producer Georg Fischer Central
Plastics in the US has used castor oil-derived Rilsan PA11 from Arkema to make the piping, which was used in a project in Nebraska, USA to collect the gas by BioResource Development (BRD). BRD produces biofuels from renewable resources, including landfill gas. In this instance, it needed a three mile pipe that could operate at up to 200psi, to trans- port the methane from the landfill. The pressure requirements exceeded the tolerances of HDPE, leading BRD to use PA11 – as it was more economical than the alternative of steel.
www.pipeandprofile.com
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