This best metal Silane agent is widely used, ranging from automobile bodies and ship hulls to screws and nuts. Without phosphating treatment, the service life of steel parts will be greatly reduced. The metal silylation process is an alternative process to phosphating that emerged as the times require. It utilizes the amphiphilic properties of silane (i.e., organic and inorganic) to functionally replace the corrosion resistance of phosphating and improve coating adhesion. Ability. Silanization technology does not contain phosphorus and has excellent environmental performance. It has always been a research hotspot in metal treatment. Silanization technology has gradually matured, and because its cost is equivalent to that of phosphating, it is regarded as the future of metal treatment processes. Silane contains two different chemical functional groups, one end of which can interact with inorganic materials (such as glass fiber, silicon The hydroxyl group on the surface reacts to form a covalent bond; the other end can form a covalent bond with the resin, thereby combining two materials with very different properties to improve the performance of the composite material. Silanization treatment can be described as a four-step reaction model. (1) The three Si-OR groups connected to silicon are hydrolyzed into Si-OH; (2) Si-OH is dehydrated and condensed into oligomeric silicone containing Si-OH. alkane; (3) Si-OH in the oligomer forms hydrogen bonds with OH on the surface of the substrate; (4) During the heating and curing process, it is accompanied by a dehydration reaction and forms a covalent bond with the substrate, but the silane on the interface There is only one bond between silanol and the surface of the substrate, and the remaining two Si-OH are either condensed with Si-OH in other silanes, or in a free state
Compared with traditional phosphating, this best metal Silane agent has the following advantages: no harmful heavy metal ions, no phosphorus, and no need for heating. The silane treatment process does not produce sediment, the treatment time is short, and the control is simple. There are few processing steps, the surface adjustment process can be omitted, and the bath liquid can be reused. Effectively improve the adhesion of paint to the substrate. It can process a variety of substrates such as iron plates, galvanized plates, aluminum plates, etc. in line.
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