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EZHOU ANJEKA TECHNOLOGY CO.,Ltd Anjeka@anjeka.net 86-0711-5117111

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Company Cases About Selection of UV defoaming agent

Selection of UV defoaming agent

2026-01-23
Latest company cases about Selection of UV defoaming agent
Selection of UV defoaming agent
 

Objective:

The customer's UV coating requires the selection of a defoaming agent, with the goal of not affecting transparency and having strong defoaming ability

 

Procedure:

Take 10g of the customer's sample paint, add a defoaming agent until it is slightly mixed, and then add another 10g of sample paint;
Stir and test for foaming property and compatibility (with a maximum turbidity of 5%)

Defoamer Dosage Hand-whipping foaming ability and compatibility Note
5052 1% Slight turbidity, with particles precipitating  
5053 1% Slight turbidity, with particles precipitating  
5055 1% Slight turbidity, with particles precipitating  
5055A 1% Slight turbidity, with particles precipitating  
5057 1% Slight turbidity, with particles precipitating  
5066N 1% Slightly turbid, with defoaming and foam-suppressing effects  
5088 1% Slightly turbid, with defoaming and foam-suppressing effects  
5141 1% Slightly turbid, with defoaming and foam-suppressing effects  
5300A 1% Slight turbidity, with particles precipitating  
5530 1% Slight turbidity, with particles precipitating  
5680A 1% Slight turbidity, with particles precipitating  
7356 1% Clear, without defoaming or foam suppression effect
 
7358A 1% Clear, without defoaming or foam suppression effect  
7361 1% Clear, without defoaming or foam suppression effect
 
7377 1% Clear, without defoaming or foam suppression effect  
7380 1% Clear, without defoaming or foam suppression effect  
7410 1% Severely turbid, with many bubbles  
7422 1% Clear, without defoaming or foam suppression effect  
Key Experiments                

Procedure:

Select products that showed better compatibility from the previous tests.

Determine their dosage that does not adversely affect the appearance.

For each selected product, prepare two samples at its minimum (0.1%) and maximum (2.0%) effective dosage.

Place each sample in a glass bottle and shake vigorously for 10 minutes.

Immediately after shaking, observe and record the following:

Foam Generation (amount of foam formed)

Defoaming Rate (speed of foam collapse)

Compatibility (transparency, haze, or separation)

Item Dosage 0.1% Dosage 2% Note
  Foam Height Defoaming Time Compatibility Foam Height Defoaming Time Compatibility All ratings are on a scale from 0 to 9, with 0 being the best and 9 the worst.
without defoamer 3mm >2H clear and transparent 3mm >2H clear and transparent
1#5066N 2.5mm >2H clear and transparent 1mm 21min Severely turbid
2#5141 2.5mm >2H clear and transparent 1mm 27min Severely turbid
3#5088 2.5mm >2H clear and transparent 1mm 55min Severely turbid
                 

Quantitative Experiment

0.10% 0.20% 0.30% 0.50% 0.80% 1% 2%  
Defoamer 5066N              
Foam Height       2mm 1.5mm 1.5mm  
Defoaming Time       60min 33min 30min  
Compatibility       almost transparent slightly turbid slightly turbid  
Conclusion
We recommend using 5066N as the UV defoaming agent for this customer, with a recommended dosage of 0.5-1%
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