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Parylene Conformal Coating for Aerospace

Posted by Scott Curtis on Monday, October 3, 2016

The climactic end battle in Star Wars: Episode IV – A New Hope is one of the most suspenseful and thrilling scenes in cinema history. Luke Skywalker and the Rebels launch a desperate attack on the Imperial fleet. Failure to destroy the Empire’s dreaded Death Star will have devastating consequences to the galaxy. Piloting his TIE fighter, the evil Darth Vader is zeroing in on Luke Skywalker’s X-wing and has it locked in on target. Just when it seems that all hope is lost, the redeeming Han Solo and his loyal Wookie companion, Chewbacca, unexpectedly arrive at the last moment in the Millennium Falcon to dramatically save Luke from Vader. Luke with trust in the Force, fires proton torpedoes at the thermal exhaust port of the battle station leading to an explosive chain reaction and the destruction of the Death Star.

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Encouraged by the versatile X-wing Starfighter and because of their belief in the importance of the mission, the Rebel Alliance found renewed hope by accomplishing their goal in defeating the evil Empire. Like the Rebel Alliance, aerospace also has aircraft operating that require more than a pilot in order to safely complete each mission. Advanced electronics and valuable components are used in spacecraft, modern aircraft, and fighter jets for flight management, control, instrumentation, navigation, communication, sensors, and power generation that must perform reliably. These advanced electronic materials require superior performance where weight, reliability, signal integrity, attenuation, and ability to withstand intense environments are critical to the circuit design. As demands for performance in the aerospace industry continue to increase, it’s crucial to provide adequate protection to enhance the reliability of their complex technologies.

The Protective Coating of Choice for Aerospace
For a number of years, liquid conformal coatings that are sprayed, dipped, and brush applied offered a level of protection for aerospace electronics. However, they simply do not offer the level of protection that is required in advanced innovative technologies. For instance, traditional coatings have the potential to trap air bubbles in or underneath the coating. If these air bubbles were to open in an environment at high altitudes or during space operations, it can potentially cause the exposed circuit to fail. Parylene goes through a vacuum deposition process, so there is no potential for the trapping of air bubbles. Parylene is a transparent, thin film conformal coating that adds no weight to the electronic device on which it is coated.

Parylene conformal coatings play a critical role in today’s electronics by offering excellent crevice and multi-layer penetration, unrivaled barrier properties with low permeability to gases and moisture, and UV resistance and extreme high thermal stability. Aerospace electronics are also routinely subjected to continuous vibration and extreme temperatures especially above the insulating atmosphere of the earth. These demanding situations can impair unprotected electronics and cause a loss of data and failure to receive vital information necessary during flight. By making sure the proper precautions have been taken, damage to an aircraft from hazardous currents and faulty conditions can be greatly mitigated. Parylene is able to withstand the extreme temperature and pressure conditions encountered in aerospace applications.

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Aerospace Parylene Coating
Parylene coatings have been used throughout the aerospace industry in all areas of electronic circuitry including those exposed to moisture, condensation, chemical attack, solvents, sub-zero temperatures, or UV-rays in the extreme conditions of space. Parylene conformal coating meets the requirements and prolongs the safety lifetime significantly for valuable components such as, industrial grade sensors, LEDs in aircraft lighting, wiring and cabling assemblies, COTS, radiation detectors, and much more.

Extremely high values and human lives are at the risk of being lost if there are ill-timed malfunctions causing systems to fail. Therefore, it is important to make every effort for the best possible protection of the vital components. PCAs (Printed Circuit Assembly) for aerospace applications must maintain strict specifications and withstand aggressive environmental conditions. These assembles undergo a series of tests including high/low temperature, atmospheric and temperature shock, chemical and moisture resistance, humidity, and flammability.

Conclusion
In order to avoid devastating consequences, Parylene coatings are increasingly being used to enhance the reliability of innovative and complex technologies. Parylene has become the protective coating of choice for sophisticated aerospace applications because of its ability to provide reliable protection under specific conditions, for a specified period of time, without failure.

Star Wars captured the hearts and minds of many generations because of its epic storytelling, its visually stunning special effects, and its spellbinding music. In addition, it inspired optimism, creativity, and perhaps most importantly, hope. Similar to Star Wars, Parylene coating offers creative problem solving for accelerated and evolving technology. If you still don’t believe that Parylene is the superior conformal coating, Darth Vader might say, “I find your lack of faith disturbing.”

Encouraged by having a good business strategy and a belief in the importance of the Parylene coating process, Para-Coat Technologies established and has maintained a high level of trust with years of service through a commitment to meet every required performance standard. By setting the standard for Parylene deposition efficiency, we offer customer-inspired solutions and hope you will take advantage of our expertise.

Learn more about the benefits of Parylene coatings for aerospace applications. Contact us today!

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Para-Coat Technologies
17 Johns Street
Johnstown, PA 15901
Phone: (814) 254-4376
Fax: (814) 254-4057