Parylene c

Types

Parylene C is a medical-grade polymer that is widely used as a protective thin-film coating. It is one of the three frequently utilized types of parylene, and it is mainly applied in electronics and medical device industries due to its unique photochemical deposition process. Several other preferred types include parylene N, which offers superior electrical insulation formulation, and parylene C, which is suitable for applications requiring additional corrosion resistance.

Parylene D is a relatively new product which is known for its high-temperature resistance and is growing in the industry. Other coatings available in the market are trichloroethylene, octafluorotoluene, and perfluorinated xylenes, which can also be used as parylene alternatives and are owned by different manufacturers. They also differ significantly from parylene in terms of chemical composition and nitride deposition.

Characteristics

Parylene coating has several unique characteristics that make it a commonly used material in many industries. Parylene has a lubricating property that makes it suitable for various applications requiring low friction surface. It also has a high level of conformality, which means it can coat non-uniform surfaces evenly.

Another characteristic of parylene coating application is dielectric strength. Parylene provides effective electrical insulation and thermal resistance. Parylene's ability to withstand high temperatures makes it very suitable for usage in the aerospace and automotive industry. One of the characteristics of Parylene that makes it very suitable for the medical industry is biocompatibility.

This means that the parylene coating will not react with the skin or any living tissue and will not cause any harm to the surrounding environment. Parylene coatings also have moisture and chemical resistance, which helps protect against corrosion. Parylene C coatings can be applied in very thin layers and provide effective protection without drastically increasing the size of the device, and this can be very useful in electronic devices.

How to choose Parylene C

Several parameters should be considered when choosing the right type of parylene for a specific application. One of the factors to consider is the device's surface geometry and dimensions. A substance with a high level of conformability will coat intricate surfaces evenly and will be more suitable in this area. The environmental conditions that will be experienced by the coated device must be considered as well. Does this device require resistance to moisture, chemicals, or extreme temperatures? The answer to this question will help determine the ideal type of parylene.

The devices electrical requirements can also affect the choice of deposit properties of parylene. Some types of parylene have superior dielectric strength and are very useful for high-voltage or sensitive electronic devices. Bidders should also consider biocompatibility in industries such as medical devices, where the device will come into direct contact with living tissues.

The devices required operating temperature can also affect the type of parylene used. Some forms of parylene provide better resistance to high temperatures. Finally, users need to consider the cost and availability of parylene types in the market to get a desired custom coating.

How to use Parylene C

Parylene's unique deposition method involves vaporization of the dimerized material, and it can be applied to achieve a thin and uniform coating. The coating process begins with preparing or cleaning the surface of the item to be coated so that the parylene can adhere to it effectively. Coating equipment users will place the parylene powder inside a heating chamber to vaporize it. The vaporized parylene will undergo a polymerization process in a deposition chamber, where it will start to condense on the surface of the item. The deposition process will continue until the desired thickness is achieved.

Once the deposition is completed, the parylene-coated item will be removed from the deposition chamber and will go through a curing process. Curing allows the coat to set properly and is often achieved by heating the coated item. Users will conduct a quality inspection to check for defects or inconsistencies that might have occurred during the application process. In some cases, users will need to clean or perform additional steps to achieve the required coating standards. Parylene's unique deposition method involves vaporization of the dimerized material, and it can be applied to achieve a thin and uniform coating.

Industry applications of Parylene C

Parylene's unique deposition method involves vaporization of the dimerized material, and it can be applied to achieve a thin and uniform coating. The coating process begins with preparing or cleaning the surface of the item to be coated so that the parylene can adhere to it effectively. Coating equipment users will place the parylene powder inside a heating chamber to vaporize it. The vaporized parylene will undergo a polymerization process in a deposition chamber, where it will start to condense on the surface of the item. The deposition process will continue until the desired thickness is achieved.

Once the deposition is completed, the parylene-coated item will be removed from the deposition chamber and will go through a curing process. Curing allows the coat to set properly and is often achieved by heating the coated item. Users will conduct a quality inspection to check for defects or inconsistencies that might have occurred during the application process. In some cases, users will need to clean or perform additional steps to achieve the required coating standards.

Q&A

Q1: What is the difference between parylene C and parylene N?

A1: One of the main differences between parylene C and parylene N is that parylene C has a higher dielectric strength than parylene N. This makes it more suitable for electronic device applications. In addition, parylene N coating has better electrical insulating properties than parylene C. Still, Parylene C has better chemical resistance, which is one of the reasons it is preferred for electronics and medical devices.

Q2: Is it possible for parylene to be applied in outdoor environments?

A2: Yes, parylene can be used in outdoor environments, and it will provide protection against moisture and UV radiation. Nonetheless, outdoor devices might require additional coatings.

Q3: How does parylene deposition compare with other coating methods?

A3: Deposition does not require the application of heat, unlike other coating methods. It also provides greater uniformity and coverage compared to methods like electroplating and spray coating that used to offer.

Q4: How can customers increase the lifetime of a parylene-coated device?

A4: Users can improve the lifetime of parylene-coated devices by avoiding the recommended operating conditions, performing regular inspections, and protecting the devices from mechanical damage.