Parylene Coating Services
Parylene Coating Process
Parylene Technology - The Coating Process
Plasma Ruggedized Solutions offers a variety of Parylene coating services. This vacuum deposition process, also known as polyparaxylylene coating, involves heating the solid parylene dimer to a vaporous state, then re-condensing it on the target assemblies to be coated. Parylene coating offers many advantages over wet-process or dip-process conformal coating:
- Ideal for applications in medical, military, electronics, aerospace, and automotive industries
- Delivers thinner film than other coating processes, allowing assemblies to be coated thoroughly without an increase in their size
- Offers extremely high chemical resistance and superior electrical properties, making it adaptable for nearly any project
- Vapor deposition process allows parylene coatings to be uniform in thickness and completely pinhole free
- Parylene coating ensures complete conformity, coating the entire assembly and leaving no areas open to exposure
Parylene C, Parylene D & Parylene N in Medical Coating Applications
For medical applications, Parylene is the preferred conformal coating material as it is biocompatible, with a long-tested history and little risk of complications. Parylene is one of few materials approved for FDA Class 6 specifications.
Plasma Ruggedized Solutions offers three different types of Parylene materials; C, D and N. Dimer N is the most commonly used of the three in medical applications.
For applications where visual inspection is critical such as connectors or second assembly soldering locations, a UV tracer can be added to the dimer which will allow the coating to be inspected under a standard UV light source to assure that the Parylene coverage and masking meet the most stringent drawing requirements. The addition of the UV tracer to the coating during application does not reduce the effectiveness of the Parylene Coating and does not require any additional processing during the application procedure. This material also complies with N.A.S.A’s low outgassing requirements of less than 1.0% Total Mass Loss and 0.1 CVCM (Collected Volatile Condensable Materials) or less outgassing in a vacuum environment. As a result of Plasma Ruggedized Solutions high-efficiency parylene coating system, the fluorescence of the finished coating is uniform and completely homogenous making a visual inspection of the coated surfaces possible without the aid of additional magnification.
Parylene Physical and Mechanical Properties
|TYPICAL PHYSICAL AND MECHANICAL PROPERTIES|
|Parylene (N)||Parylene (C)||Parylene (D)|
|Tensile Strength, psi||6,500||10,000||11,000|
|Tensile Strength, MPa||45||69||76|
|Yield Strength, psi||6,300||8,000||9,000|
|Yield Strength, MPa||2,400||3,200||2,800|
|Elongation at Break, %||40||200||10|
|Coefficient of Friction:|
|Water Absorption, % (24 hr)||0.01 (0.019")||0.06 (0.029")||<0.1|
|Index of Refraction, nD23||1.661||1.639||1.669|
Parylene Coating Services at Plasma Ruggedized Solutions
Plasma Ruggedized Solutions utilizes proprietary masking processes that ensure greater safety for the product being coated, and result in superior and consistent product quality. Our proprietarily-controlled parylene coating services feature multistage operator and inspection points to assure high first time yields.
Following any necessary cleaning and masking, the assemblies to be coated are positioned in the deposition chamber. The product remains at room temperature during the coating process. Coating thickness is controlled by the amount of dimer loaded into the system. The parylene dimer is then heated until it changes from its solid powder form to a vapor. The high temperatures used to cleave the dimer into two monomers. These monomer molecules enter the deposition chamber and form the polyparaxylylene polymer. This process ensures that the coating forms consistently over all available surfaces. The result is a thin, uniform coating with high chemical resistance and superior dielectric properties, ideal for numerous applications.
Parylene is the Cadillac of conformal coatings
Its physical characteristics make it highly resistant to various hostile environments, because of its precision application and enduring features it is the preferred conformal coating material for military and medical customers.
Learn more about Parylene by reading Whitepapers from Plasma Ruggedized Solutions
Interested in learning more about how Parylene can apply to your industry? Plasma Ruggedized Solutions is an industry leader, with several whitepapers that you can read to learn more about Parylene, its applications, and more. Please peruse our whitepapers today.
Contact Plasma Ruggedized Solutions Today for Parylene Coating Services
Contact Plasma Ruggedized Solutions today to learn more about our parylene conformal coating services and how they can benefit your company’s products. Learn more about our parylene tumble coating services here.