Parylene, discovered in the 1940’s, is a polymer created from a chemical compound known as dimer. After undergoing polymerization, it becomes a film that can be applied to virtually any surface, via a chemical vapor deposition (CVD) process. It uniformly penetrates and coats all surfaces, including edges, corners, sharp points, cavities and tiny pores. It’s also pinhole free and provides excellent barrier protection
When sensitive components are exposed to harsh environments, it’s necessary to use heat resistant parylene. Many companies only produce a single (and expensive) dimer, but it’s worth searching out a company that produces multiple dimers at affordable rates. The best kind is stable at a constant temperature of 350 degrees Celsius, and at an intermittent temperature of 450 degrees Celsius. The diX variants HR, SR, CF and SF all have extremely high thermal stability, as well as other important properties.
Heat resistant parylene is incredibly valuable in situations where complex components are exposed to harsh environments, such as the automotive industry. Examples include battery/cell power systems, polymers (gaskets and seals), LED, circuit board electronics (PCBs), monitoring and control systems, flow sensors and pressure sensors. In this industry, it’s also used for its excellent solvent/chemical resistance, controlled deposition thickness and outstanding crevice penetration.
The aviation industry, which operates in the most extreme of environments, also relies heavily on heat resistant parylene. It’s used in navigation, avionics/flight control systems, circuit boards, cockpit instrumentation, communications equipment and displays/imaging equipment. In an industry where it’s not uncommon to venture into the emptiness of space or thin, freezing air at 30,000′ altitudes, choosing reliable dimers, such as diX variants, could be a matter of life or death.
Perfect for harsh environments, heat resistant parylene is also necessary in the defense industry. It’s used in circuit boards, satellite electronics, radar/detection equipment, computers, weaponry and communications devices, among other things. The diX brand is approved by aerospace, aviation and defense industries. Plus, it conforms to appropriate standards including ISO, Mil-Spec, IPC and ITAR.
Heat resistant parylene is very valuable in industries where sensitive components are subjected to harsh environments, such as the automotive, aviation and defense industries. This informative article focuses on the properties of parylene and how it is frequently used in these industries.