EZHOU ANJEKA TECHNOLOGY CO.,Ltd Anjeka@anjeka.net 86-0711-5117111
Anjeka Experiment Report
(No.: 202605019)
Anti-Sagging Performance Test of Wax Paste in Epoxy and Alkyd Systems
Test Item: Anti-sagging performance of wax paste in epoxy and alkyd systems
Test Category: Thixotropic agent evaluation
Technician: Chen Shan, Technical Department
Submission Date: May 19, 2026
Abstract:
Epoxy and alkyd slurries were prepared using Anjeka polyamide wax paste 4312-20X. The anti-sagging performance was evaluated by measuring slurry viscosity and sagging thickness. The results show that Anjeka 4312-20X provides good anti-sagging performance in both epoxy and alkyd resin systems.
Keywords: Wax paste; Viscosity; Sagging
1. Objective
To evaluate the anti-sagging performance of Anjeka polyamide wax paste 4312-20X in epoxy and alkyd systems.
2. Experimental Scheme
Reagents:
Epoxy resin (Sample 601-60) – Mixed solvent (Xylene : n-Butanol = 4 : 1)
Alkyd resin (Sample 3370) – Solvent (Xylene)
Wax pastes: Anjeka 4312-20X, Competitor wax paste (sample from Wolong)
Instruments:
High-speed disperser
Rotational digital viscometer
Sagging tester
Viscosity Measurement:
Viscosity of the premix was tested at 25°C using a rotational viscometer.
3. Formulations and Methods
Table 1: Premix Formulation
| Component | 4312-20X (Epoxy) | 4312-20X (Alkyd) | Competitor (Epoxy) | Competitor (Alkyd) | Blank |
|---|---|---|---|---|---|
| Resin | 100 | 100 | 100 | 100 | 100 |
| Solvent | 20 | 20 | 20 | 20 | 20 |
| Wax paste | 10 | 10 | 10 | 10 | 10 |
Method: The above premix was dispersed at 2000 r/min for 15 minutes.
Table 2: Diluted Sagging Test Formulation
| Component | 4312-20X (Epoxy) | 4312-20X (Alkyd) | Competitor (Epoxy) | Competitor (Alkyd) | Blank |
|---|---|---|---|---|---|
| Resin | 100 | 100 | 75 | 75 | 75 |
| High-speed premix | 25 | 25 | 25 | 25 | 25 |
Method: The high-speed premix was diluted proportionally to prepare the slurry. Sagging thickness was measured using a sagging tester.
Table 3: Anti-Settling Test Formulation
| Component | 4312-20X (Epoxy) | 4312-20X (Alkyd) | Competitor (Epoxy) | Competitor (Alkyd) | Blank |
|---|---|---|---|---|---|
| Premix | 62 | 62 | 62 | 62 | 62 |
| Solvent | 37.5 | 37.5 | 37.5 | 37.5 | 37.5 |
| Pearlescent pigment | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Total | 100 | 100 | 100 | 100 | 100 |
Method: The above slurry was dispersed at 800 r/min for 15 minutes, then placed in a 60°C oven for 7 days to observe sedimentation.
3.1 Results and Discussion
Viscosity Comparison of Premix
Viscosity at 25°C (mPa·s)
| System | 4312-20X | Competitor Wax Paste | Blank |
|---|---|---|---|
| Epoxy | 10,734 | 9,738 | 336 |
| Alkyd | 13,943 | 12,283 | 571 |
As shown in the table above, in both systems, Anjeka 4312-20X exhibits slightly better thickening effect than the competitor wax paste.
Sagging Comparison of Slurries Prepared by Different Methods
In both systems, Anjeka 4312-20X shows slightly better anti-sagging performance than the competitor wax paste.
Sagging thickness (μm)
| System | 4312-20X | Competitor Wax Paste | Blank |
|---|---|---|---|
| Epoxy | 400 | 375 | 225 |
| Alkyd | 400 | 350 | 250 |
Note: Diluted sagging test using high-speed premix
Anti-Settling Comparison
After 7 days of hot storage (60°C)
| System | 4312-20X | Competitor Wax Paste | Blank |
|---|---|---|---|
| Epoxy | No separation | No separation | 99% sedimentation |
| Alkyd | 3% sedimentation | 3% sedimentation | 99% sedimentation |
In both systems, the anti-settling performance of Anjeka 4312-20X is essentially consistent with that of the competitor wax paste.
4. Conclusion
In both resin systems provided by the customer (epoxy and alkyd), Anjeka 4312-20X demonstrates slightly better thickening and anti-sagging performance than the competitor wax paste, while its anti-settling performance is comparable to the competitor.
