Multilayer plastic anticorrosive coating having improved properties
A coating and coating technology, applied in the direction of coatings, rigid pipes, devices for coating liquids on surfaces, etc., can solve the problems of complex cost, limited output, high processing steps, etc., to improve elasticity and improve incision impact resistance , Improve the effect of impact resistance
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[0090] Grit blasted steel pipes (48 inches in diameter) were heated to 200°C. Then apply the following layers in sequence on this steel pipe:
[0091] - The first layer is a standard resin layer applied by electrostatic spraying treatment with a thickness of 0.12mm;
[0092] - Apply a standard adhesive layer directly on top of the first layer by coating extrusion with a thickness of 0.25 mm;
[0093] - On top of the standard adhesive layer is a standard HDPE top layer material with a thickness of 3mm;
[0094] - Apply a silane-crosslinkable outer layer with a thickness of 1 mm directly onto the still molten PE top layer with a second nozzle.
[0095] This process ensures that the PEX layer is well attached to the previously applied layer of thermoplastic PE. Since the PEX layer is not yet crosslinked at the time of application, the overlapping areas of the material applied during the coating extrusion step form a good connection. The process parameters and corresponding pr...
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