Parylene is a coating material that’s been tried and tested time and time again. Due to its superior design, this coating has been used for years to protect and lubricate metals, plastics, electronics, and elastomers.
This material creates an ultra-thin coating, which offers a pin-hole-free barrier that’s able to conform to any shape or surface, filling in all recesses and crevices to an equal thickness. All this happens without the edge issues that arise with more conventional coatings.
Some of the specific benefits offered by Parylene coatings are found here. Keep reading to learn more.
Provides a Solution for Dry Friction
Parylene is a dry film coating that’s highly lubricious. It has a low coefficient of friction of just 0.25 static, along with a dynamic that’s between 2.5 um and 6 um.
Parylene is used for elastomeric applications to remove the tackiness from the substrate with a coating thickness that’s as low as 1500A.
Many consider Parylene to be the best thin film conformal coating when it comes to environmental protection. This is especially the case for high-reliability applications.
This is the coating of choice for effectively ruggedizing subassemblies, devices, and critical electronics in various industries, such as medical, defense, or aerospace.
This material offers protection from corrosive bodily fluids, moisture, temperature, gases, fungus, chemicals, and corrosive bodily fluids that far surpass the protective properties of the majority of other conformal coatings.
The thickness tolerances are usually held from over/under 20 percent from nominal. In some cases, tolerances that are as tight as over/under five percent may be possible. This is true for even the most complex and intricate shapes.
A Low-Stress Process
When applied at room temperature, the application of Parylene is a low-stress process. Any object that’s able to be exposed to a medium vacuum is able to be coated with this material.
A Parylene coating is an insoluble and inert material in the majority of solvent systems within the temperature range. This material is thermally stable between -200 degrees Celsius and 125 degrees Celsius, and even higher with an inert environment.
There are other benefits provided by this coating, too. For example, another reason that Parylene is so popular to use with medical devices is because the physical properties are not impacted by sterilization methods.
It is also extremely elastic. This means that to break this material due to elongation, a person must stretch it more than 200 percent. It is also a material that’s optically clear.
Is Parylene Coating the Right Option?
When considering various coatings for materials, it’s important to consider all the options. As anyone can see from the information here, Parylene offers a wide array of benefits. However, it is important to consider the material’s makeup carefully when trying to determine if it is the right option for a particular application.
In the long run, making sure the right material is found is going to significantly impact the overall success of the product, regardless of what it is, or what industry it is used in. The right coating material can ensure a high level of success for virtually any project.