Parylene Coating Blog by Diamond-MT

Where to Buy Parylene

Posted by Sean Horn on Fri, Jul 28, 2017 @ 07:38 AM

Materially, parylene is the most distinctive of the major conformal coatings.  But just how does it differ from liquid coatings -- acrylic, epoxy, silicone and urethane??  

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Tags: parylene, parylene deposition, parylene dimer

Batch Size Considerations for Parylene Production

Posted by Sean Horn on Fri, Apr 14, 2017 @ 07:35 AM

The parylenes consist of a range of para-xylylene polymers whose desirable physical and electrical properties support expansive utilization as conformal coatings for electronic and medical devices  Parylene films are applied to substrates via a chemical vapor deposition (CVD) process, which deposits monomeric parylene vapor homogeneously and deeply into the surface of printed circuit boards (PCBs) and related assemblies/components. 

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Tags: parylene, parylene process, parylene deposition, parylene disadvantages

Is Parylene Safe?

Posted by Sean Horn on Fri, Aug 12, 2016 @ 07:30 AM

Application of parylene’s xylylene monomer employs a chemical vapor deposition (CVD) process implemented under a vacuum.  Unlike wet coating application methods – brushing, dipping, spraying, etc. – parylene CVD is not line-of-sight.  Because the vaporous monomer envelopes all sides of the assembly being coated, appropriate process control allows vacuum deposition of an entirely conformal coating, one that penetrates deep into any crevices, rivulets, or sharp edges and points that exist on the assembly’s surface.  The resultant parylene film is insulating, ultra-thin, and pinhole-free, exhibiting superior protective barrier qualities and very low moisture permeability.

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Tags: parylene, parylene deposition, parylene uniformity, medical parylene, medical device coating, parylene safety

Mastering the Parylene Coating Process

Posted by Sean Horn on Fri, Sep 04, 2015 @ 08:00 AM

Parylene Deposition  

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Tags: parylene, parylene process, parylene deposition

How Parylene is Applied Compared to Other Conformal Coatings

Posted by Sean Horn on Fri, Aug 21, 2015 @ 01:45 PM

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 1947The 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.  

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Tags: acrylic conformal coating, parylene, parylene deposition

Silicone Conformal Coating vs Parylene

Posted by Sean Horn on Fri, Aug 07, 2015 @ 09:46 AM

Silicone and Parylene conformal coatings are a lot like humans and dogs. At first glance, we are very different from our canine friends. However, we have a lot in common -- noses, two eyes, hearts, dreams. In fact, we share 84 percent of our DNA with Rover (or Spot). So too with the two coatings. While both have some functional differences -- which we'll explore here -- they also have an important similarity. Parylene and Silicone are both some of the best choices for conformal coatings of your company's products.

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Tags: parylene, parylene deposition, silicone conformal coating

Understanding Parylene Deposition

Posted by Sean Horn on Fri, Jul 31, 2015 @ 08:10 AM

Parylene's deposition process is unique among conformal coatings. Unlike others that start as a liquid, get deposited and dry, it starts as a solid. Parylene coating equipment turns it into a vapor, where it then deposits onto the substrate. This unique four-step method poses some challenges but also brings real advantages.

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Tags: parylene, parylene deposition, parylene disadvantages

Masking for Parylene Deposition

Posted by Sean Horn on Fri, Jul 17, 2015 @ 07:15 AM

Masking and Parylene Deposition

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Tags: parylene, parylene deposition, parylene masking

Parylene Masking Revealed

Posted by Sean Horn on Wed, Aug 14, 2013 @ 09:07 AM

Whether the application is a medical device, a printed circuit board (PCB), or a light-emitting diode (LED), a parylene conformal coating is typically applied to protect the product. Sometimes, however, the product actually has to be protected from the parylene conformal coating—or at least parts of it do. 

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Tags: parylene, parylene conformal coating, parylene process, parylene deposition, parylene masking

What is the maximum object size for parylene coating?

Posted by Sean Horn on Mon, Feb 11, 2013 @ 11:00 AM

People often wonder if their project can be parylene coated.  While there are huge list of items that can be coated with parylene, there are some limitations.  One of these limitations is size.

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Tags: parylene, parylene conformal coating, parylene coating process, parylene deposition