Styrenic insulation for pipe

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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Details

F16L 59/14 (2006.01) B32B 1/08 (2006.01) B32B 7/12 (2006.01) B32B 27/36 (2006.01) B32B 33/00 (2006.01) C09D 125/04 (2006.01) E21B 17/01 (2006.01) F16L 58/02 (2006.01) F16L 58/10 (2006.01) F16L 59/10 (2006.01) F16L 59/18 (2006.01)

Patent

CA 2708687

Coatings for protecting and insulating fluid and/or gas transport conduits, such as off-shore oil and gas pipelines operating at temperatures of up to 100°C in water depths above 1,000 metres. The outer surface of the conduit is provided with at least one layer of thermal insulation comprising polystyrene or styrene-based thermoplastic, having low thermal conductivity, high thermal softening point, high compressive strength and high compressive creep resistance.

L'invention porte sur des revêtements pour protéger et isoler des conduites de transport de fluide et/ou de gaz, telles que des canalisations de pétrole et de gaz en mer fonctionnant à des températures allant jusqu'à 100 °C dans des eaux profondes au-delà de 1000 mètres. La surface externe de la conduite comporte au moins une couche d'isolation thermique comprenant une matière thermoplastique à base de polystyrène ou de styrène, ayant une conductivité thermique faible, un point de ramollissement thermique élevé, une résistance à la compression élevée et une résistance au fluage en compression élevée.

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