EZHOU ANJEKA TECHNOLOGY CO.,Ltd Anjeka@anjeka.net 86-0711-5117111
| EZHOU ANJEKA TECHNOLOGY CO.,Ltd Professional Additive supplier |
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| Test Record Sheet | |||||||
| Test Name | Defoamer Testing for Epoxy Systems | Temperature/humidity | |||||
| Customer | Conducted by | Mr. Wang | Date | July 27,2025 | |||
| Objective | |||||||
| Formulation | |||||||
| Formulation | |||||||
| Resin | 150 | Sanmu 828 | |||||
| Reactive diluent | 21 | AGE | |||||
| Defoamer | 1.05 | ||||||
| Procedure | |||||||
| 1.After weighing, disperse the mixture using a high‑speed disperser: first at 1000 rpm for 1 minute, then increase to 3000 rpm for 9 minutes. 2.Pour the selected material (containing foam) into a 100‑ml graduated cylinder up to the 100‑ml mark, then weigh it. 3.Allow the sample to stand. Record the following at 2 hours and 24 hours: The meniscus reading (ml) in the graduated cylinder. The height of the clear supernatant (mm or %). The clarity of the liquid phase (e.g., clear, hazy, turbid). 4.Calculation Initial Density = Mass of Material / Initial Volume of Material Foam Fraction (%) = [(Initial Meniscus Reading – Meniscus Reading after Standing) / Initial Meniscus Reading] × 100% Defoaming Efficiency (%) = [(Initial Meniscus Reading – Meniscus Reading after Standing) / (Initial Meniscus Reading – Meniscus Reading after Complete Defoaming)] × 100% |
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| Result | |||||||
| Defoamer | Material Weight (Tare Deducted) | Initial Meniscus Reading | 2H | 24H | Clarity of Supernatant | ||
| Material Meniscus (ml) | Supernatant Meniscus (ml) | Material Meniscus (ml) | Supernatant Meniscus (ml) | ||||
| AJK 5680A | 110.24 | 100 | 99 | 2 | 98.5 | 98.5 | Severely turbid, completely opaque. |
| AJK 5053 | 109.49 | 100 | 99 | 1 | 98 | 98 | Severely turbid, completely opaque. |
| AJK 5088 | 108.24 | 100 | 98.5 | 1.2 | 97.5 | 97.5 | Slightly hazy, semi‑transparent. |
| AJK 5066N | 110.03 | 100 | 99 | 2 | 98.5 | 98.5 | Slightly hazy, semi‑transparent. |
| AJK 5530 | 104.64 | 100 | 96 | 0.5 | 94 | 94 | Slightly hazy, semi‑transparent. |
| Sample 530 | 105.64 | 100 | 97 | 1 | 95 | 95 | Slightly hazy, semi‑transparent. |
| AJK 5680A | AJK 5088 | AJK 5530 | Sample 530 | AJK 5053 | AJK 5066N | ||
| initial density | 1.1024 | 1.0824 | 1.0464 | 1.0564 | 1.0949 | 1.1003 | |
| 2H Foam Fraction% | 1 | 1.5 | 4 | 3 | 1 | 1 | |
| 24H Foam Fraction% | 1.5 | 2.5 | 6 | 5 | 2 | 1.5 | |
| Defoaming Efficiency% | 66.7 | 60 | 66.7 | 60 | 50 | 66.7 | |
| Conclusion | |||||||
| In this epoxy system： Anjeka 5680A delivers the best defoaming and foam inhibition performance, but exhibits relatively poor compatibility. Anjeka 5066N offers good defoaming, foam inhibition, and excellent compatibility. |
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