As the demand for living environment , environmental awareness and gradually strengthen further . Today's society is an urgent need to lower pollution or pollution of surface coatings , while people with low surface treatment for corrosion protection coatings put forward higher requirements . Said here, everyone will understand , I am talking about is environmentally friendly, corrosion resistance PCB circuit board surface treatment coating . Under this premise . At home and abroad to strengthen the in-depth study of Mastic selling low corrosion surface treatment coating with an aqueous low surface coatings.
Internationally low penetration of epoxy surface treatment of aluminum paint , rust mechanism from the point of view belongs to infiltration , permeability good use of the modified epoxy coating to infiltration , infiltration, porous layer of rust full replacement moisture rust layer formed continuous film , the stainless steel bread layer and seal it up , so isolated from the outside layer of rust corrosion medium for violations, organized development of corrosion . In addition, it uses a flake aluminum powder as a filler , filler to form the kind of interwoven tile-like structure in the coating , excellent shielding , can penetrate the barrier outside of corrosive media . While at the same UV-reflecting the improved weathering performance epoxy coatings .
Most water-based surface coatings using low- styrene-acrylic composite emulsion , acrylic emulsion and some water-based emulsion or resin-based material , aluminum tripolyphosphate , zinc , zinc oxide and other active anti-rust paint made from paint , such coatings also use paint penetrate into the rust layer, and rust dividing it while the active pigment P3O105- PO3- addition and synthesis of stable cross-linked film-forming material compound and the polar groups (-OH,-COOH) network , the better and Fe, Fe chelate generated , indicating the formation of a stable metal protective film is formed and layered inhibiting corrosion , rust and thus play a role .
To sum up , PCB circuit board processing of the early development of low surface coatings are mostly single mechanism of action of coatings, low- life of the anti-corrosion paints and coatings , while not environmentally friendly. With the technological development and social progress , the development direction of the coating surface treatment for low low surface coatings with high practical value , will have broad market prospects. With the need for scientific and technological development and production of life , such coatings will be widely used in various fields.
