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Pipe Joint Coating Speeds Application

Tuesday, June 21, 2011

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3M’s newest protective coatings technology is Scotchkote PNC 1011, a one-part, heat-curable, thermosetting hybrid coating designed to protect pipeline field joints from corrosion.

Interpenetrating polymer networks of polyolefins and epoxy produce a synergistic effect that yields performance superior to that of the individual components, 3M says.

 3M coating for offshore pipelines
The film is laminated onto the joint, eliminating the need for an adhesive layer, 3M says.

Because of PNC's high reactive chemistry, it can be applied directly to a gelled or cured FBE coating.

Durability, Application

3M says Scotchkote PNC1011 has shown better durability and adhesion in testing than current three-layer systems and is easier to apply. An automatic applicator “laminates” the dual-layer film onto the field joint.

The 16-inch-wide film uses the residual heat from the pre-heat in the FBE application to bond to the FBE primer, eliminating the need for an adhesive. This results in faster, more reliable application and removes the potential for failure at the adhesive layer, due to application conditions, 3M reports.

When applied correctly, 3M Scotchkote PNC1011 has a wide operating window, performing in temperatures of 50–135 degrees Celsius. The product has passed every test outlined for Code 5C according to Clause 14 of the ISO 21809-3 standard. It also met the requirements of the DIN 30678 and NFA 49-711 standards that are applicable to a polypropylene film.

Other Protective Technologies

3M has supplied coating products for the corrosion protection of oil, gas and water pipelines under the Scotchkote brand for more than 50 years. 

Its portfolio includes 3M Scotchkote Liquid Epoxy 323i, a two-part system that can be used as a patch material, field joint coating, or as a standalone internal or external pipeline coating for corrosion protection and polyurethanes such as 3M Scotchkote Urethane Coating 352.

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Tagged categories: 3M; Coatings technology; Corrosion protection; Epoxy; Field joint coatings; Nano and hybrid coatings; Pipelines

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