All About Parylene Coating Process
The parylene coating process takes place at room temperature so that there is no thermal stress on the product. The same is physically stable and an inert product within the temperature range. It also provides a friction coefficient of 0.25-0.30 along with excellent protection from salt spray, moisture, corrosive elements, etc. existing in the work environment. The polymers are deposited from the vapor phase where all sides of the object are encapsulated to achieve a uniform coated surface. This helps to deliver a truly conformal coating. The Parylene Coating Process Includes Three Stages - Sublimation at vacuum at 120 C. This is done by using the stable crystalline dimer di-p-xylylene that delivers vapors of the material in question. Pyrolysis phase that has vapors at 650 C to form a reactive monomer of p-xylylene. This is succeeded by the deposition and polymerization of p-xylylene to attain Parylene. The process also requires proper cleaning, activation, and masking of