Parylene coating is a type of conformal coating used for a diverse range of applications. It is a series of polymers based on the hydrocarbon Parylene. These coatings can be adapted to a range of substrate materials and angles and also come with unmatched reliability and durability.
There are usually three kinds of Parylene coating.
● Parylene N
● Parylene C
● Parylene D
● Parylene HT
Each of these nano ceramic coatings is used in different environments due to their different characteristics. Parylene C and Parylene N are the most commonly used for industrial and other applications. Conventional coating suppliers offer standard coatings; however, modern Parylene coating manufacturers provide tailored coating solutions depending upon the application requirements.
Parylene Application
Parylene coating is applied in a vacuum, which is regarded as a vapor deposition. The polymer begins as a powder and is placed in a vaporiser. It turns the polymer into gas, and the vapour is heated again and sent into a room-temperature chamber to coat the substrate surface or object. It results in a thin and even coating capable of reaching and covering angles and crevices that may not be as strongly protected by liquid options.
Common Parylene Uses
Parylene organic polymers are suitable for a wide range of applications, such as aerospace/defense, automotive, commercial, industrial, and medical applications. These coatings are chemically inert, colorless and optically clear. The coating provides an exception barrier protection, dielectric reliability, and insulation, which makes it suitable for printed circuit boards (PCBs) and similar electronic assemblies whose components
Electronics: Parylene coating is used for safeguarding electronic products against moisture, corrosion and more, without causing any obstruction in the flow of electricity.
Aerospace: It is used in many aerospace mechanisms such as flight deck controls, LED displays, nanotech, and deep space vision systems and so on.
Windows: Parylene protects windows against temperature extremes and high-stress environments, which makes it the perfect coating for glass and windows.
Medical devices: This coating helps in protecting medical devices, such as implantable devices, from the pressures of the human body while safeguarding the body from parts, electronics and other factors.
Benefits of Parylene coating
There are several advantages of using Parylene coating, such as versatility, resistant properties, and chemical inertness.
Non-liquidity
Parylene coating is in a non-liquid form, which makes it safe on even the most sensitive electronic devices. Parylene coating service providers offer extremely thin coating. It can still act as a liquid that can fit into the most sensitive electronics. It is an extremely thin coating, so it can still act as a liquid and fit into small crevices without damaging effects.
Versatility
It is a most versatol coating that can be used on a variety of things, such as:
● Conformal Coating For Circuit Boards & Electronic Assemblies (Meets MIL-I-46058C, Type XY)
● Particle Immobilization (e.g. Disk Drive Metal Components)
● Lubricity (e.g. Catheter Guide Wires)
● Dielectric (e.g. Cores/Bobbins)
● Hydrophobic (e.g. Biomedical Tubing)
● Barrier (e.g. Filters, Membranes, Valves)
Resistant Properties
Such coating has resistant properties, which makes it an effective barrier against thermal damage and chemical attacks.
Conclusion
Parylene is used as a preferable conformal coating for a variety of important projects. The effects of gravity and surface tension are minimal in comparison to the liquid processes. There is no bridging, thin-out, pinholes, puddling, run-off or sagging in the process. It takes place at room temperature, so there is no thermal or mechanical stress on the product. From medical devices and aerospace mechanisms to consumer electronics and windows, this coating uses its unique properties to create unparalleled protection and reliability. It is prudent to determine your application needs and look for reputed Parylene coating manufacturers offering tailored solutions to meet your requirements.