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Parylene Coating Material in Medical Devices

Jun. 26, 2019

Parylene is a protective polymer material that is formed into a protective film using a vacuum vapor deposition process. The film has the characteristics of uniform thickness, compact pinhole-free, transparent and stress-free, and has excellent electrical insulation and protection. Parylene Material is a molecular grade coating material developed by American Union Carbide Corporation in the mid-1960s. It is the common name of the unique poly-P-xylylene polymer series and is also a military standard. The only solid coating.

Parylene currently used mainly includes Parylene N, Parylene C and Parylene D. The commonality is high inertness and high purity, and each model has its own characteristics: Parylene N has a high breakdown strength and a low dielectric constant independent of frequency; Parylene C provides excellent electrical properties. The combination of properties and physical properties, including hot air and low permeability in corrosive gases; Parylene D improves thermal stability through excellent physical and electrical properties at elevated temperatures. Parylene HT is a combination of materials with the advantages of the above three materials.

Parylene Coating Material

Parylene Coating Material

The medical application is mainly after the application of Parylene, the film formed on the surface of the product has the characteristics of biocompatibility and isolation lubricity. This has important and profound significance for the production of catheters, needles, skeletal prostheses, pacemakers, and peep optics. Parylene Coating Material has no effect on human blood and is bio-corrosive. It has been approved by the US Food and Drug Administration (FDA) for long-term implantation in humans.

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