Specification
|
S.N. |
Item |
XG01 extinction coating |
XG01 extinction coating |
|
1 |
Appearance |
Black sticky liquid without layers |
|
2 |
Coating state |
Pure black, leveling and bright |
Pure black, leveling and dim |
|
3 |
High temp. 100℃, 2h |
Coating does not soften |
|
4 |
High temp. - 40℃, 2h |
Coating does not crack |
|
5 |
Coverage g/m2 |
20 |
|
6 |
Pencil hardness |
2H |
|
7 |
Adhesion |
Grade 1 – 2 |
|
8 |
Water resistance (dip in the tap water for 24h at room temperature |
Coating remains unchanged |
|
9 |
Ether and ethanol resistance |
Coating remains unchanged when contacting mixed liquid |
|
10 |
Mixture of ether and ethanol 24h |
Wavelength 290.0nm, no absorption and emission |
Usage
1、 Dip the coating material with degreased cotton and apply the coating on the ground
edge evenly. Application can also be done by spraying. It’s better to let the optics
rotate uniformly during application.
2、On condition that the edge becomes black, the coating should not be too thick.
3、If thin and uniform coating is required, it is recommended to apply the coating by
spraying.
4、To ensure the firmness of the coating, clean and degrease the surface to be applied
with mixture of ether and ethanol before application.
5、If the coating is too sticky, it can be thinned to required adhesiveness with X-1
nitrodope thinner.
6、Put the applied parts in the oven and bake the parts at 80℃ for 2 hours for hardening.
7、The black coating, formed after volatilization of coating thinner, can be removed at the
very beginning with solvent, such as banana oil, acetone, mixture of ether and ethanol.
With the time goes on, the adhesion of the coating becomes strong, it is very difficult
to remove it. Therefore, if the non- coated surface is contaminated by mistake, remove
it within 8 hours.
8、The coating should be airtight and stored in a well-ventilated and dry place. The period
of validity is 6 months. It the coating is not used for a long time, mix it evenly before
application. If it is possible, filter the coating with copper wire cloth in order to remove
deposit.
Normal phenomenon, main cause and solution
|
S.N. |
Phenomenon |
Main cause |
Solution |
|
1 |
Coating is not uniform |
Application is not uniform, rotation is not proper |
Applying by praying and adjusting rotation |
|
2 |
Coating is too thick |
Coating is too thick |
Thin the coating with X-1 nitrodope thinner. |
|
Application time is too long |
Shorten application time and increase application times |
|
3 |
Coating is too thin |
Coating is too thin |
Coating container is open and solvent volatilized. |
|
Application time is too short |
Extend application time and decrease application times. |
|
Rotation is too fast |
Lower down rotation |
|
4 |
Coating is not sticky |
The edge of optics is not clean |
Clean the edge of optics |
|
Coating is not completely hardened. |
Increase baking temperature and extend baking time. |
|
Coating is not well stored and become useless |
Replace the coating with good one |
|
5 |
There are small particles in the coating |
There are small particles in the coating |
Filter coating with copper wire cloth |
|
The edge of optics is not clean |
Clean the edge of optics |
|
6 |
Hardening is too slow |
Baking temperature is too low |
Increase baking temperature |
|
7 |
Coating can not be dry |
Baking time is too low |
Increase baking temperature |
|
Baking time is too short |
Extend baking time |
|
Coating is not well stored and become useless |
Replace the coating with good one |
|
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