With the decline of energy and resource reserves, the pipeline fleet transports more and more gas, asphalt and other low-quality petroleum products, and the construction of marine pipelines is also developing continuously. Development has been uninterrupted. The following is an introduction to some technologies.
High temperature resistant 3pe anticorrosion
Surface treatment External shot blasting level 2.5, tattoo 60 microns. After shot blasting and rust removal, the surface of the steel pipe is cleaned with phosphoric acid and chromate to remove the dust attached to the surface of the steel pipe.
The first layer uses FBE anti-corrosion epoxy powder to replace ordinary 3pe anti-corrosion powder, which improves the surface chemical activity and enhances the adhesion with FBE. The glass transition temperature of FBE is between 100-150 ° C, and the Vicat softening of the adhesive The softening point of HDPE is 124°C because of its narrow molecular weight distribution, tougher properties and strong resistance to mechanical damage.
The second layer is the most important. The high temperature performance of 3pe depends on the properties of the raw materials. At present, the high-performance raw materials independently developed by Xinlong Anticorrosion are based on the conclusions drawn from industrial application practice. The softening point temperature of the adhesive is reduced by 20 °C, the maximum operating temperature of the modified 3pe anti-corrosion layer is obtained.
Post time: Oct-11-2022