EZHOU ANJEKA TECHNOLOGY CO.,Ltd Anjeka@anjeka.net 86-0711-5117111
| Selection of UV defoaming agent | ||||||||
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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 |
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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; |
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| 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 |
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| 7358A | 1% | Clear, without defoaming or foam suppression effect | ||||||
| 7361 | 1% | Clear, without defoaming or foam suppression effect |
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| 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 | ||||||||
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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) |
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| 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 | ||
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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% | ||||||||