Acrylic (AR) and polyurethane (UR) conformal coatings are among the best known and most commonly used conformal coating materials. As liquid coatings, both can be applied to substrates through a variety of methods:Read More
Parylene Coating Blog by Diamond-MT
Electronics manufacturers need devices that withstand heat, cold, rain, snow, vibration, fungus, oxidation, and corrosion through decades of operation.Read More
Overall the generic name parylene describes a distinct collection of polycrystalline and linear organic coating materials with innumerable applications. The essential basis of today's parylene N, p-xylene, was inadvertently synthesized at England's University of Manchester in 1947. The filmy residue resulted after high-temperature heating of compounds of toulene and the xylenes polymerized into para-xylene. The substance immediately demonstrated an exceptional capacity for generating the fine but resilient surface-covering that characterizes today's range of parylene conformal coatings.Read More
Conformal CoatingsRead More
Parylene and acrylic conformal coatings represent two extremes of the types of compounds you can use to coat printed circuit boards, sensors, or other devices. While acrylic is popular and inexpensive, parylene offers some of the best performance of any coating compound.Read More
Conformal Coating Selection: Weighing the Pros and Cons for Your Application
Acrylic and urethane conformal coating are widely used conformal coatings. While they share the same methods of applications and ultimate end item uses, there are some differences that should be addressed prior to deciding what conformal coating is the best for your project.
Parylene and acrylic resins are both conformal coatings. Most of the similarities stop there. Because their properties vary so much, they have their own unique uses and capabilities.
Parylene conformal coating is a very robust coating, but sometimes it is not the right fit for a customer’s application for one reason or another. The entire conformal coating process is based on first identifying the standards to be used and customer’s protection desired. It would therefore only make sense that there are alternatives to parylene for different conformal coating demands.
Acrylic conformal coatings, such as MG Chemicals 419C and Humiseal 1B31 are a very popular conformal coating choice. They are used primarily for moisture protection on printed circuit boards. Often times, they are the cheapest conformal coating to apply because of their easy to use nature. As a result of this, people try to apply acrylic conformal coating as a DIY project. An issue that arises frequently is an improper thickness of coating, resulting in lackluster protection.