Silicone defoamers (Solvent type)
Silicone defoamer (Solvent type)
KEPERPOL®-768
Can effectively inhibit and break the bubbles generated during construction of the high solid content and solvent-free coating system. Especially recommended for PCB inks and epoxy floor coatings.
Product overview
KEPERPOL®-768 is a 100% silicone defoamer containing bubble breaking particles , especially recommended for PCB inks and epoxy floor coatings.
Physical data
1. Effective ingredient: Modified polysiloxane containing bubble breaking particles
2. Content: 100%
3. Solvent: No
Product features
1.Can effectively inhibit and break the bubbles generated during construction of the high solid content and solvent-free coating system.
2.The bubble breaking speed is fast,It has good self-leveling effect in epoxy floor coating.
3.Has excellent deaeration and broken bubble effect in the printing inks.
4.Need to test its compatibility in transparent systems.
Application test
We tested and compared the comprehensive performance of KEPERPOL®-768 in PCB ink and epoxy floor coating.
Compare items and methods
1.Compatibility: The defoamer is added to the varnish of each system at a ratio of 0.2%, and tested the transparency of the paint.
2. Shrinkage tendency/self-levelling effect: Added 0.5% defoamer in paint,spraying after dilution.Observe the shrinkage phenomenon of wet film and the leveling effect of dry film.
3.Defoaming ability :Add 0.2% defoaming agent to the paints, and observe the number of foam and the breaking speed after shaking five minutes.
Test result
|
Test item |
KEPERPOL®-768 |
Comp1 |
|
Bubble breaking ability |
◎ |
◎ |
|
Cleanliness |
△ |
△ |
|
Self-levelling effect |
○ |
○ |
|
Centrifugal separation (4000×15min) |
Small precipitation |
Small precipitation |
◎ : Excellent, ○ : good, △ : average ╳:poor
The test results show that KEPERPOL®-768 has good defoaming ability in PCB ink. Please contact us for more information.
Additive amount (Supply form)
For the total amount of formula: 0.2-1%
The best dosage needs to be obtained through testing
Application field
Suitable for solvent-based coatings and inks,suitable for defoaming in high solid content and solvent-free coating systems.PCB inks,epoxy floor coating.
Shelf life and packaging
1. The shelf life is two years, starting from the date of production.When stored, the container should be sealed well, and the temperature should be between 0-40℃
2. Packaging: 25KG/200 KG ,iron bucket