1. Liquid coating deposition process
Common liquid coating materials are polyurethane, epoxy resin, UV glue, silicone, and acrylic. These liquid coatings form a protective layer on the surface of the workpiece by spraying or manual brushing. In the process, it is easy to block small pores, generate air bubbles, thicker thickness, and uneven thickness. Good to achieve the effect of three defenses.
2. Parylene chemical vapor deposition process (CVD)
Parylene coating belongs to the deposition method of CVD. In the vacuum state, active small molecules "grow" a conformal polymer film coating on the surface of the substrate, which can be applied to surfaces of various shapes, including sharp The edges, slits, and deep cracks and inner surfaces known as "pervasive". The coating thickness is uniform, the same shape, dense without pinholes, transparent and stress-free, no additives, no damage to the workpiece, excellent electrical insulation and protection, so that the coated products are more effective against moisture and mildew ( Zero grade), anti-corrosion, anti-salt spray.
3. Differences in film thickness uniformity between Parylene coating and ordinary coatings
Ordinary coating: (1) The film thickness is uneven, the shape changes (2)The edge part, the coverage of the foot is not enough (3) The shrinkage pressure of thermal hardening cannot be tolerated
Parylene coating: (1)The film thickness is uniform and the shape is the same (2) The surrounding coverage is good (3)The room temperature is constant, without any shrinkage pressure
4. Introduction to the application of Parylene coating products
(1) Ferrite core: insulation, winding protection
(2) Rare earth magnets: anti-rust, insulation
(3) Formal installation of the motherboard (PCB motherboard): insulation, anti-lake
(4) Rubber molding products: improved surface properties and improved lubricity
(5) Probe: moisture-proof, anti-corrosion
(6) Catheter guide lock: anti-corrosion, improve lubricity
(7) Medical implant materials: anti-rust, anti-allergic
(8) Other electronic components (aviation, space, defense, automobile) and medical equipment with high characteristic requirements.
Maggie Nano Technology Co., Ltd. is a high-tech enterprise specializing in the research, development, sales and production of Parylene vacuum coating equipment and its services. If you want to know more about parylene coating, welcome to consult!
