Iranian Experts Produce Protective Coatings for Oil Pipes
Protective coatings based on polymers are used to maintain and protect metal structures against corrosion in corrosive environments. These composite coatings consist of pigments, fillers, organic and inorganic polymer resins, organic solvents, and also special additives.
Depending on the use and application of each type of these coatings, their ingredients and percentage composition will be different. Also, the goals required for each organic coating are different.
The specific use of types of pigments and fillers in organic coatings is very important with respect to Pigment Volume Concentration, and their preparation with respect to the lower or higher amount of PVC can affect the permeability, physical, mechanical properties, and chemical resistance. These coatings can consist of several layers and the use of inorganic or organic polymer resins has significant effects on the quality of the organic coating.
The type of organic resin and its amount affect the adhesive or cohesive properties, rheological properties, uniformity, gloss, and electrochemical properties of the formed film. Also, the formation of the film as a thermoset or thermoplastic changes the performance of the organic coating on the quality and performance.
The presence of suitable and effective additives produced by the Iranian company that can affect the appearance properties of the film and the reactivity in the crosslinking of the polymer structure, as well as improving the application methods, is of particular importance; therefore, the research and study of any of these coatings, considering the wide variables available to researchers, provides a relatively wide field for research so that researchers can achieve their effective and required achievements in practice by using the most effective ingredients based on theory and experience.
In a relevant development in December, Iranian researchers at a knowledge-based company had also succeeded in production of polyethylene gas pipes with a yellow color to make finding the underground pipes easier for engineers.
“Today, we have over 13 production lines and more than 25,000 tons of production capacity per year,” said Abolqassem Madanlou, the managing director of Caspian Louleh Tabarestan company.
Noting that the repair department of Iran’s National Gas Company always faces problems by excavation of the ground and inability to trace the pipes buried in the soil, he said, “Therefore, we obtained this know-how in the research and development (R&D) unit of our company.”
“As a result, the pipes that are used now will be replaced by metal ones. We also have a plan to distinguish gas pipes from other pipes buried under the ground, and that is a special yellow color. Now, fortunately, we have achieved the know-how for production of this yellow color. Gas pipes are also yellow in the European states,” Madanlou said.
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