Application Of Silicon Alkylation Treatment Technology On Metal Surface In The Industry

Conventional metal surface protection treatment technology such as Phosphate conversion/Chromate is not green. With the growing emphasis on environmental protection. The new green surface treatment process is need to study. Metal surface treatment technology by silane is the ideal technology because of the unique structure and excellent performance. Now,the Silane treatment technology has been applied to a variety of metals and metal alloys m corrosion.In this paper,the development status, growth prospects and existing technology, equipment technology, engineering and the application in the practical of Silane on the metal surface treatment technology were researched and analyzed. Compared With the conventional metal surface protection treatment technology, the advantages and disadvantages were summarized, the existing problems and deficiencies of the technology were find out,the improve and research direction in the future were identified.The study shows that, after the silane treatment,-Me-O-Si-covalent bond was formed between the metal substrate and the silicone combination, passivation of the surface of the substrate by hydrolysis, polycondensation, and the dehydration condensation chemical reactions, modification treatment on the metal surface was completed. Compared with other organic coating surface treatment technology, it has unique remarkable advantages, such as with non-polluting, processing pieces of good corrosion resistance, coating is firmly bonded, non-process residue, feasible at room temperature, compatibility with original coating process,etc. that is environmental protection, energy saving, low-emission, low use cost, has higher value in use. The silane film is very thin (200nm to300run). Which limits the ability to provide corrosion protection for a long time, and have not self-healing ability, the Therefore the metal surface silanization treatment technology which is low-cost, environmentally-friendly, and has self-repair capacity and higher corrosion resistance is need to research and development.meanwhile the hydrolytic stability of silane solution and the methods to prevent the failure of silane has yet to be in-depth studied.Silane as a new environmentally friendly pre-treatment technology, in the beginning of this century, it has been used widely in the international arena, some of our research institutions also begun to research in this area, its mechanism of action, influencing factors, the preparation method has been studied extensively, and have achieved some results of research. The research in this area is mainly applied to metals such as aluminum, zinc, magnesium or their alloys fields, such as auto parts and home appliances industries. In engineering materials such as carbon steel, also need further research and development.