Brief analysis of three anti - paint operation process
Three anti - paint from the chemical components can be divided into acrylate, silicone, polyurethane three anti - paint;From the curing system, solvent - based curing, room temperature curing, thermal curing and uv curing.Their process selection is generally determined by the viscosity of the products (different concentrations of different solids).Analysis of the three anti-paint operation process of the three anti-paint factory has its own diluent to dilute the equipment set up different concentration of the product, so as to determine the appropriate spray, brush, dip and other different process requirements.
1, containing solvent acrylic resin paint (the most widely used in the market at present, the public product) characteristics: dry surface, curing faster, better anti, cheap price, suzhou rub silk board color bright, texture flexible, easy to repair the characteristics.Used to protect circuit boards and their associated devices from environmental corrosion, thus improving and delaying their service life, ensuring the tranquility and reliability of use.Under the actual conditions, such as chemical conditions (fuel, coolant, etc.), shock, high dust, salt spray, humidity and high temperature, etc., the circuit board can be corroded, hardened, deformed, mildewed and other problems, resulting in circuit board problems.Tri-resistant paint is applied to the surface of the circuit board to form a light and flexible film with a thickness of about 25-50 microns.It can protect the circuit from the harm mentioned above.
2, solvent free acrylic resin three anti - paint characteristics: UV curing, Beijing rub wire board can be in a few seconds to a dozen stopwatch dry, bright color, texture is hard, anti - chemical erosion and wear resistance is also very good.Uv to the initial curing of the three anti - paint, no solvent.They do not extinguish, do not contain volatile organic compounds, and are consistent with current and proposed environmental regulations.They can provide good chemical resistance and heat resistance, good flexibility, general shine, adhesion, good cage cover.Curing time, is a fraction of other products (in seconds.), through the progress of production rate and greatly reduced the cost of the product.For thermoplastic materials point coating and bonding, such as PMMA (acrylic, plexiglass), PC, ABS, PS, PVC, PCB and other departments of engineering plastics, and can be used for plastic and glass, plastic and metal and other organic materials bonding, the model is used for circuit board plastic parts firmly, mobile phone button point coating and other industries.
3, polyurethane three anti - paint characteristics: texture is more crisp, has a good solvent resistance function.In addition to superior moistureproof function, and in high temperature conditions function unchanged.As a media reporting heat, it has good electrical insulation and thermal conductivity, resistance to concave and convex temperature, and can last for a long time within the temperature scale of -60° ~ 250° without any signs of wind liver softening or melting.
4, silicone three anti - paint soft elastic coating material, can release pressure, high temperature resistance of 200 degrees, easy to repair.Silicone three - anti - paint has solvent - resistant and solvent root - breaking two products.They are used at high temperature and have good resistance to chemical erosion and salt spray.Although solvent-resistant products can stop the operation of welding, it is difficult to be broken by organic solvents.Their biggest characteristic is that the bonds get stronger and stronger as time goes on.To achieve the best function, if necessary to stop the thermal curing.Silicone products have obvious electrical insulation characteristics, making it an ideal product for high power and high integrated circuit boards.With excellent waterproof, moisture-proof, dustproof, anti-erosion, anti-aging and other characteristics, widely used in circuit board, electronic components insulation protection.