SCS Blog
Recent SCS Blogs
Surface Treatments Prior to Parylene Coating
Pre-coating Essentials Poor Parylene adhesion negates many of the coating’s most-valued functional properties, including dielectric strength and resistance to the effects of chemicals, corrosive agents and moisture. Surface treatments that amplify the interface adhesion between the deposited Parylene and the coated substrate are therefore highly desirable before the chemical vapor deposition (CVD) process is enacted.... Read More >>
Nanocoating and Conformal Coating: A Functional Comparison
The engineering of functional systems at the molecular scale, nanotechnology encompasses management of individual atoms, combined into effective working units, often complex as machines. Yielding advantages like enhanced chemical reactivity and strength than larger-scale structures, they offer greater control of the light spectrum and weigh significantly less. Incredibly small, one nanometer is a billionth of... Read More >>
Parylene and Tin Whiskers
Tin whiskers have long been a frustrating occurrence for those manufacturing and using electronic devices. First discovered in the 1940s, the whiskering of metal has been the cause of serious problems, including the damaging of vital and difficult to replace equipment. Finding ways to prevent or slow the growth of whiskers has been a focus... Read More >>
Parylene and Hydrofluoric Acid
Parylene is a chemically inert conformal coating [1]. It has a well-established vapor deposition process and patterning methods. It is a great candidate for use in various application areas (health, aerospace, oil and gas, microelectronics and so on.) due to its mechanical, physical, optical and chemical properties. Parylene is known to withstand highly corrosive environments,... Read More >>
What is the Price of Parylene Conformal Coating?
Parylene stands out as the premium conformal coating choice for safeguarding devices, components and surfaces across electronics, instrumentation, aerospace, medical and engineering sectors. Renowned for its chemical stability, Parylene serves as an exceptional barrier material, displaying resistance to solvents and moisture, remarkable dielectric strength and uniform coverage. Engineers generally have a strong affinity for Parylene... Read More >>
How Long Does the Parylene Coating Process Take?
ParyIene’s distinctive vapor-phase polymerization method sets it apart significantly from the application procedures of other coating materials. This more intricate process involves directly depositing the substance onto the material being coated, enabling deeper penetration into the substrate surface. Executed within a specialized vacuum chamber, Parylene’s application process eliminates the need for the typical intermediate liquid... Read More >>
Protecting LEDs with Parylene
LEDs are gradually replacing all other types of lighting. As they move out of consumer electronics and into general purpose applications, the demands on the technology are shifting. It is relatively easy to keep an LED safe when it is mounted in the front panel of a computer or hidden under a cover on an... Read More >>
What Temperature Will My Parts See During the Parylene Coating Process?
The Parylene coating process involves four steps: drawing vacuum, sublimation, pyrolysis and polymerization. Parts to be coated must be vacuum stable in order to be successfully coated. Sublimation then takes place between 120°C – 175°C wherein the dimerized Parylene precursor is sublimated. Then moving into the pyrolysis section, it undergoes cracking to form the highly... Read More >>
Parylene: Making a Difference Across Many Markets
Parylene conformal coatings are used in many different industries. With their hardness, chemical inertness and ability to perfectly coat any surface, they have expanded well beyond their original military and aerospace applications. Whether it’s a protective coating for an LED or a protective shell around a coronary artery stent, the compound is found in places... Read More >>
Parylene Effectiveness at Different Thicknesses
Each conformal coating material exhibits a range of unique performance properties that determine its product uses. Relevant factors include the required coating thickness necessary to assure reliable performance. Like other coating types, Parylene (XY) layer thickness is largely a function of several factors: substrate material, the kind of assembly being covered and its operational purpose.... Read More >>
