Saturday, January 22, 2011

Parylene China: Conformal Coating and Conservation

By Marley Hughes


Discovered over 60 years ago, parylene is now commonly used in a wide range of industries, including the LED, automotive, medical, defense, electronics and aerospace and aviation industries. It is produced around the globe, including parylene China facilities, as well as others in Japan, Taiwan, USA and Brazil, just to name a few. However, it isn't only used for mass-produced items. Conservation specialists at both small and large scale museums have discovered its excellent preservation properties. With an unusually small amount of coating, it strengthens fragile materials and saves items that would otherwise be lost.

Parylene coating isn't a perfect technique, but many conservationists have found success with it. Most museums rely on multiple specimens, so damaging an irreplaceable specimen isn't the biggest concern. Its fault lies in its irreversibility, meaning it can't be used in every situation. To eliminate ethical concerns, the best approach is to use a wide variety of preservation techniques, including conformal coating.

The preservation of natural history specimens is another area that benefits from this product. It's important to preserve their gross morphology, meaning every wing, leg, antennae needs to survive in its natural, attached form. It's also helpful in diorama displays where delicate items such as flowers and leaves need to be protected. In addition, this coating allows them to be easily washed with dry-cleaning agents or hot soapy water, and to be transported more easily.

Parylene is also used on items that are in dire conditions, such as archeological textiles, charred fiber samples and deteriorating 20th century materials, including the foam rubber found in radios and puppets. This coating is also handy for coating the inside of old ledger bindings, which usually don't survive the re-binding process.

There are many parylene companies, including parylene China manufacturers, that are conveniently located for better, faster service. Whether you're protecting automotive sensors or the delicate wings of a dragonfly, conformal coating might be the solution you've been looking for.




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