| |
|
|
| |
|
|
|
 |
|
|
|
|
| |
|
|
| |
| Home >>
Advantages of diX
Parylene Coating |
|
diX C
|
Useful
combination of physical, electrical and chemical properties.
MIL-SPEC. I-46058C Approved and UL94 V-0 Approved.
|
|
diX N
|
Non-halogen.
Good for medical applications.
High electrical properties.
|
-
diX C and diX N Parylene
coating materials are very high in purity-above 99%. High
purity eliminates residue and stains in coating machines,
doesn't cause offensive odors due to decomposition of
impurities and has high gas barrier properties. C
-
Coating thickness of the
material ranges from the micron range to millimeters while
maintaining a perfectly uniform, clear thin coating.
-
Applied in a non-liquid
form, which creates a thin uniform coating that is pinhole
free. A non-liquid coating eliminates sagging, bridging
between surfaces, puddling and pinholes.
-
High resistance to
chemical solvents and moisture creating a coating that can
withstand harsh conditions.
-
Covers all surfaces left
exposed allowing coating of hard to reach places that would
otherwise provide enormous obstacles with other coating
materials.
-
Optical Clarity-diX
Parylene coating material is a transparent, colorless film
ideal for optical applications.
|
|
Coating Process
of Parylene Dimer-Gas Phase Deposition
The products to be coated must first be cleaned and masked
and are then placed in the deposition chamber. One important
fact about parylene coating and the reason it is so
advantageous is that the coating applications are done at
room temperature.
Next, dimer is then placed in a glass tube in an aluminum
foil cup called a "boat".
The process then begins when an end cap is placed over
the glass tube. Dimer is then changed from a solid into a
vaporized gas because of reduced pressure at the other end
causing the molecules to move down the tube. In the
pyrolysis zone, the gas is heated to higher temperatures
(680oC) and then cleaved into the reactive
monomer, para-xlylyene, which is critical for the process.
The monomer molecules then enter the deposition chamber and
re-form as a long-chain polymer on all exposed surfaces.
Film growth then continues in the deposition chamber
creating a coating surface that is pinhole free and is able
to reach the deepest crevices and the sharpest edges in
uniform manner.
A cold trap is used between the deposition chamber and
the vacuum pump to prevent parylene molecules that did not
deposit in the chamber from reaching the vacuum pump. It
also prevents "backstreaming" of oil molecules into the
deposition chamber.
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
| |
|
|
|
