Peculiarity of the ceramic polymer coatings: ProGuard row offers a dense network of polymer chains even at high substrate temperatures (TG > 120 C). One of the world’s largest oil refineries is located in Abadan in the Persian Gulf. A 90 km-long pipeline, which was installed about 7 years ago, leads to the port city of Bandar Mahshahr. In Abadan, the oil has a temperature of 90 C and cools over the long transport route to approx. 60 C. This increased operating temperature represents a special challenge for the appropriate coating.
Conventional epoxy coatings applied on hot substrates, harden too quickly due to the low TG point, without achieving a high-quality polymer network. The layer remains permeable so after curing and not reliably protects against corrosion. The “ProGuard series” of ceramic polymer GmbH has a glass transition temperature of > 120 c and therefore longer fluidity of a denser network, thus the polymer chains. Usually offers a PP coating over many years reliable corrosion protection for buried pipelines. In this case the polypropylene strips due to the high temperature of the medium have shrunk but significantly, so that numerous metal surfaces were uncovered. The corrosion of unprotected pipe is rapidly accelerated by high standing, saline groundwater. Countless leaks can leak oil. In the course of extensive renovation, the pipeline section by section is completely uncovered.
The PP coating is removed and repaired damage to the metal. The substrate is properly illuminated and then into the airless process with our premium product ProGuard CN 100 iso”coated. Repair and recoating of the pipeline is in operation. 90 C hot oil flows continuously through the line. ProGuard CN 100 iso”is applied directly on the hot steel! The 2-components-epoxy coatings of our solvent-free ProGuard series”(VOC mg = 0) are based on ultra-modern, plasticizer-free special resins. The TG (glass transition temperature) point is these systems > 120 C. A dense network of polymer chains is achieved also at high substrate temperatures.