Stainless steel pipes have excellent corrosion resistance, wear resistance and ease of processing, and are widely used in the petrochemical industry with harsh environments. The hydrophilic property of stainless steel tube surface is an important factor affecting the mass transfer and separation process on its surface. Therefore, it is of great practical significance to study how to improve the surface hydrophilic property of stainless steel tube. Stainless steel pipes have good flexibility, corrosion resistance, high temperature resistance, wear resistance, tensile strength, water resistance and provide excellent electromagnetic shielding performance. The stainless steel tube can be freely bent into various angles and curvature radii, and the stainless steel capillary tube has the same flexibility and durability in all directions; the stainless steel tube pitch is flexible, has good flexibility, no blocking and stiffness phenomenon.
The stainless steel pipe has a certain tensile strength to prevent the damage of the hose from causing the lines laid inside the hose to be exposed, and the axial tensile force can experience more than 6 times the nominal inside diameter.
In recent years, the research on this aspect has received extensive attention, but the proposed surface treatment methods for stainless steel pipes are relatively complex and difficult to industrialize. Studies have shown that chemical oxidation method can effectively improve the corrosion resistance of stainless steel pipes.
The chemical oxidation treatment can improve the hydrophilicity of the surface of the stainless steel tube, and its hydrophilicity increases with the increase of the oxidation temperature and the prolongation of the oxidation time.
Chemical oxidation treatment can greatly increase the content of oxygen-containing polar groups on the surface of the stainless steel tube and within a certain thickness range, so that the surface free energy and polar components of the stainless steel tube can be enhanced, thereby effectively improving the hydrophilicity of the surface of the stainless steel tube.
Post time: Nov-04-2022