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      LOCATION: HomeProduct CenterSeries special coating and protective materialExtinction coatings
Name:Extinction coating
Technical parameters:
  It is a single liquid and oil based black coating. 
It is featured for good flowing property, thin coating, 
good extinction effect, strong adhesion and easy 
application. It is suitable for application on the 
ground edge of optics to eliminate glare. 
Details:
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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Address:beijing  E-mail:
Phone:0871-68593568  Fax:0871-68590607  Technical Support:NEWFULCRUM 
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