EZHOU ANJEKA TECHNOLOGY CO.,Ltd Anjeka@anjeka.net 86-0711-5117111
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professional additive manufacturer
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| Experimental record sheet | |||||||
| Experiment name | Conduct a comparative screening for a universal (water- and solvent-compatible) dispersant against the currently used Dispersant 1252. The key performance criteria are the rub-out color difference test and the thermal storage stability against floating and flooding. | Temperature/humidity | 5-13℃/95 | ||||
| Client | / | Applicant | Mr. Wang | Test date | Jan.22 2026 | ||
| Objective: To evaluate and screen dispersants based on the specific types and ratios provided by the client. | |||||||
| color paste formula | |||||||
| C311 black | Iron Oxide Yellow | 15:4 Phthalocyanine Blue | Titanium Dioxide |
Lanxess 4110 Iron Oxide Red |
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| Pigment content | 35 | 40 | 35 | 60 | 50 | ||
| A171（Ethylene glycol butyl e ther ） |
13 | 13 | 13 | 13 | 13 | ||
| Purified water | 34.5 | 41 | 34.5 | 24 | 32 | ||
| Dispersing agent 1252/6162A/6622/6881/ 6240 | 17.5 | 6 | 17.5 | 3 | 5 | ||
| Paint mixing formula | |||||||
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Grey 1252/6240 |
Blue 1252/6240 |
Yellow 1252/6240 |
Viscosity S | fineness um | color difference △E |
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| 2233 Water based acrylic acid dispersion |
65 | 65 | 65 |
gray 1252 |
6128 | ＜15 | 0.18 |
| White paste | 25 | 20 | 5 |
gray 6240 |
4662 | ＜15 | 0.13 |
| black paste | 1.2 | 0.5 | 2 |
blue 1252 |
2115 | ＜15 | 0.7 |
| blue paste | 0.5 | 3 |
blue 6240 |
2451 | ＜15 | 0.27 | |
| Iron yellow paste | 0.5 | 15 |
yellow 1252 |
504 | ＜15 | 0.12 | |
| Iron red paste | 0.4 |
yellow 6240 |
721 | ＜15 | 0.35 | ||
| AMP-95PH additive | 0.25 | 0.25 | 0.25 | ||||
| Anjeka7412 Wetting agent | 0.3 | 0.3 | 0.3 | ||||
| Anjeka5062A defoamer | 0.1 | 0.1 | 0.1 | ||||
| DPNB solvent | 2 | 2 | 2 | ||||
| DPM solvent | 2 | 2 | 2 | ||||
| DB solvent | 2 | 2 | 2 | ||||
| Deionized water | 0.45 | 4.55 | 6.05 | ||||
| 299 Thickener | 0.3 | 0.3 | 0.3 | ||||
| 100 | 100 | 100 | |||||
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Experimental Procedure: Paste Preparation: Prepare color pastes by grinding with various dispersants according to the specified steps. Select only those pastes that exhibit good flowability and achieve a fineness of <15 µm. Tint Preparation: Formulate gray, blue, and yellow tints using the selected pastes. Primary Evaluation: Measure the rub-out color difference (ΔE) for each tint. Resin Incorporation: Incorporate the prepared tints into the client-specified aqueous acrylic dispersion resin (Shiquanxing). Stability Test: Subject the final coatings to thermal storage and observe them for any signs of floating or flooding. |
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Note: For Anjeka black color pastes, dispersant 6162A shall be used. For all other colors, dispersant 6240 shall be used. Dispersant 6162A demonstrates superior color development compared to 1252. |
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| Comparative Test Results: Dispersant 1252 vs. Anjeka-6240 | |||||||
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Experimental Conclusion: Color Development: The total color difference (ΔE) for the three tested colors is lower with Anjeka-6240 than with Dispersant 1252, indicating better color matching and stability for Anjeka-6240. Thermal Storage (Floating): Dispersant 1252 exhibited white floating. Anjeka-6240 exhibited black floating. Overall, Anjeka-6240 shows slightly better performance in resisting floating during thermal storage, although the performance of both dispersants in this regard is not optimal. Recommendation: Based on its superior color difference results and marginally better anti-floating performance, it is recommended to proceed with Anjeka-6240 for further client testing. |
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