The composite lubricating materials research group of the Advanced Lubricating and Protective Materials Research and Development Center, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences successfully prepared a super-hydrophobic-superhydrophilic conversion coating by a simple method. Authorized (a superhydrophobic-superhydrophilic conversion coating, patent number ZL.X).
The researchers prepared a PTFE / fluorinated carbon nanotube composite coating, which can adjust the surface chemical composition and microstructure of the coating through different heating temperatures, thereby achieving a superhydrophobic-superhydrophilic transition on the coating surface. The coating has good stability and good wettability conversion effect, and is suitable for a variety of solid surfaces, petroleum, chemical and other fields that have different requirements on wettability. This simple method provides a new idea for the preparation of composite coatings with special wettability under different heating conditions, and has certain reference significance for the research on the control of the surface wettability of polymer composites.
The preparation of superhydrophobic-superhydrophilic material surface is the key to the real application of surface functional materials in practical industrial and agricultural production and daily life. At present, foreign superhydrophobic-superhydrophilic surface preparation technology is in a leading position. The domestic research and development of superhydrophobic-superhydrophilic conversion surfaces is relatively short, especially for superhydrophobic-superhydrophilic conversion coatings. Although the preparation method of the disclosed polymer material with changeable surface wettability is simple, the solid polymer used is limited according to the requirements on the surface chemical composition. Therefore, it is very necessary to invent a paint with simple preparation method and strong applicability and to prepare the surface with variable wettability by a simple technique.
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