Static conductive lining for repairing product oil pipeline and manufacturing method thereof

Abstract

The invention discloses a static conductive lining for repairing a product oil pipeline and a manufacturing method thereof, which belong to the field of material science. The static conductive lining comprises a tubular thermoplastic polyurethane elastomer which is matched with the product oil pipeline and to the surface of which polyamide fiber is attached, and static conductive lining slurry which is immersed onto the tubular thermoplastic polyurethane elastomer from an outer surface, wherein the static conductive lining slurry is prepared by fully and uniformly mixing the following components in parts by mass: 70-80 parts of epoxy resin, 10-20 parts of glass fiber, 5-10 parts of a mica-modified carbon nanotube and 20-40 parts of acid anhydride. The static conductive lining has the beneficial effect: the problem of poor static conductivity of the conventional epoxy resin lining material can be effectively solved. The volume resistance and surface resistance are less than 106 Omega.cm. A material provided by the invention can be widely applied to a static conductive lining material in non-excavating repairing engineering of various product oil pipelines.

Description

technical field [0001] The invention belongs to the field of pipeline engineering, in particular to a static-conductive inner lining for repairing a product oil pipeline and a manufacturing method thereof. Mainly used in refined oil pipeline system and chemical pipeline system. Background technique [0002] As an anti-corrosion material, epoxy resin not only has the characteristics of compactness, water resistance, good leakage resistance, and high strength, but also has good manufacturability such as strong adhesion, normal temperature operation, excellent curing and molding performance, and easy construction, and the price is moderate. It is a material widely used in the non-excavation pipeline repair process at present, and can be used in projects such as modern urban water supply and drainage, crude oil pipeline repair and other fields. [0003] However, with the development of pipeline trenchless repair technology, the lining materials used in product oil pipeline repa...

AI Technical Summary

Problems solved by technology

Taking jet fuel as an example, in many cases, it is required that the conductivity of the oil injected into the aircraft through the pipeline is 50-450pS / m, and epoxy resin itself is a good material with high dielectric properties, surface leakage resistance, Excellent arc-resistant insulating material. After repairing the old product oil pipeline, the oil flow rate increases and the internal friction increases. Compared with the original steel pipeline, the existing lining repair layer is easy to cause static electricity. Accumulated and unable to dissipate into the surrounding environment, the electrical conductivity of the oil filled on the aircraft is unqualified, which brings serious hidden dangers to the flight safety of the aircraft

[0004] At present, the general method to improve the electrostatic conductivity of epoxy resin materials is to add conductive substances such as carbon black and iron powder to the material, but this method is greatly limited by the performance of the conductive filler itself, and it will also make the cured The physical and mechanical properties of the material cannot meet the standards, so it is not feasible

At present, there is no electrostatic conductive lining material based on epoxy resin specially used for the repair of refined oil pipelines in the world.

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