Two-Component Epoxy White Paint Defoamer Test
April 28, 2026
Test Procedures
- Blank Epoxy White Paint Test (100 mL Graduated Cylinder):Initial scale reading,Foam height after shaking (30S),Scale reading after defoaming,Defoaming completion time and Surface tension
- Add 50g of two-component epoxy white paint to graduated cylinders and test with the following defoamers:
- TEGO 810
- TEGO 902
- BYK 028
- BYK 024
- Anjeka 5062A
- Anjeka 5063
- Anjeka 26022801 (new)
- Anjeka 260401 (new)
Dosage: Defoamer added at 0.1%–0.2%
- Drawdown Test for Cratering Evaluation
Mixing ratio: Paint : Curing agent = 3.5 : 1
Two-Component Epoxy White Paint Composition
| Component |
Amount |
Supplier |
| WE3201A Waterborne Epoxy Resin |
66 |
Herze |
| DPNB Solvent Dipropylene glycol n-butyl ether |
5 |
|
| 70% 190 White Paste 996 |
29 |
|
| Total |
100 |
|
Mixing ratio: Paint : Curing agent = 3.5 : 1
Temperature 22°C, Humidity 85
Shaking (30S) in 100 mL Graduated Cylinder
0.1% Defoamer Dosage Test Results
(0.05g defoamer added to 50g white paint)
| Defoamer Added to White Paint |
Manufacturer |
Initial Scale (mL) |
Foam Height (mL) |
Height After Defoaming (mL) |
Approx. Time (s) |
Surface Tension (mN/m) |
Foam Volume (mL) |
| White paint without defoamer |
|
41 |
41.5 |
41 |
1.5 |
Drying too fast |
0.5 |
| TEGO810 |
TEGO |
41 |
42 |
41 |
1.5 |
Surface skinning |
1 |
| TEGO902 |
TEGO |
41 |
42 |
41.5 |
1.5 |
|
0.5 |
| BYK028 |
BYK |
41 |
41.5 |
41.5 |
1.5 |
|
0 |
| BYK024 |
BYK |
41 |
42 |
42 |
1.5 |
|
0 |
| 5062A |
AJK |
41 |
42 |
41.5 |
1.5 |
|
0.5 |
| 5063 |
AJK |
41 |
41.5 |
41 |
1.5 |
|
0.5 |
| 5061 |
AJK |
41 |
42 |
41.5 |
1.5 |
|
0.5 |
| 5064 |
AJK |
41 |
41.5 |
41 |
1.5 |
|
0.5 |
In the two-component epoxy white paint defoamer test, 028 and 024 show the best foam suppression performance, while others are consistent; defoaming time is comparable to the base paint. Due to rapid surface drying of the epoxy resin, surface skinning occurred and surface tension could not be measured.
0.2% Defoamer Dosage Test Results
0.1g defoamer added to 50g white paint
| Defoamer Added to White Paint |
Manufacturer |
Initial Scale (mL) |
Foam Height (mL) |
Height After Defoaming (mL) |
Approx. Time (s) |
Surface Tension (mN/m) |
Foam Volume (mL) |
| White paint without defoamer |
|
42 |
42 |
41.5 |
1.5 |
Drying too fast |
0.5 |
| TEGO810 |
TEGO |
42 |
42 |
41.5 |
1.5 |
Surface skinning |
0.5 |
| TEGO902 |
TEGO |
42 |
41 |
41 |
1.5 |
|
0 |
| BYK028 |
BYK |
42 |
42 |
41.5 |
1.5 |
|
0.5 |
| BYK024 |
BYK |
42 |
42 |
41.5 |
1.5 |
|
0.5 |
| 5062A |
AJK |
42 |
42.5 |
42 |
1.5 |
|
0.5 |
| 5063 |
AJK |
42 |
42 |
41.5 |
1.5 |
|
0.5 |
| 5061 |
AJK |
42 |
42 |
41.5 |
1.5 |
|
0.5 |
| 5064 |
AJK |
42 |
42 |
41.5 |
1.5 |
|
0.5 |
Foam suppression 902 is the best; others are consistent
Defoaming time:consistent with the base paint
Gloss & Cratering Evaluation After Drawdown
| Defoamer Added to White Paint |
Manufacturer |
0.1% Defoamer Dosage |
0.2% Defoamer Dosage |
| Dry film thickness (μm) |
Gloss 60°/20° |
Cratering (Y/N) |
Dry film thickness (μm) |
Gloss 60°/20° |
Cratering (Y/N) |
| White paint without defoamer |
|
14 |
96.5/63.7 |
N |
16 |
102.9/71.9 |
N |
| TEGO810 |
TEGO |
15 |
98.6/35.8 |
Y |
18 |
84.9/43.8 |
Y |
| TEGO902 |
TEGO |
17 |
93.5/29.8 |
Y |
14 |
97/58.1 |
Y |
| BYK028 |
BYK |
14 |
78.5/18.6 |
Y |
24 |
88.5/51.8 |
Y |
| BYK024 |
BYK |
15 |
76.8/16.2 |
Y |
28 |
91/50.9 |
Y |
| 5062A |
AJK |
12 |
75.3/23.2 |
Y |
17 |
82.1/34.9 |
Y |
| 5063 |
AJK |
13 |
93.8/44.6 |
Y |
21 |
94.8/54.4 |
Y |
| 5061 |
AJK |
16 |
92.1/48.1 |
Slight |
18 |
93.4/54.6 |
Y |
| 5064 |
AJK |
17 |
95.5/52.1 |
Slight |
17 |
83.1/35.3 |
Y |
In terms of gloss, 024 and 5062A have greater impact on gloss, while others show higher gloss. Defoaming time of all samples is consistent with the base paint. Regarding cratering, 5061 and 5064 show the least impact.
Two-Component Epoxy White Paint — Gloss & Cratering Evaluation After Wetting Agent Addition
Defoamer dosage: 0.1%,Wetting agent dosage: 0.3%
| Defoamer Added to White Paint |
Dry film thickness (μm) |
Manufacturer |
Wetting agent dosage/model no. |
Gloss 60°/20° |
Appearance defects (Y/N) |
| White paint without defoamer |
|
|
None |
|
|
| TEGO810 |
14 |
TEGO |
0.3%4100 |
98.1/66.3 |
N |
| TEGO902 |
15 |
TEGO |
0.3%4100 |
53.1/9.1 |
N |
| BYK028 |
13 |
BYK |
0.3%349 |
100.5/59.4 |
N |
| BYK024 |
14 |
BYK |
0.3%349 |
102.6/65.1 |
N |
| 5062A |
15 |
AJK |
0.3%7422 |
100.7/70.7 |
N |
| 5062A |
13 |
AJK |
0.1%7334 |
99.2/67.8 |
N |
| 5062A |
16 |
AJK |
0.3%7334 |
95.1/53.5 |
N |
| 5063 |
15 |
AJK |
0.3%7422 |
99.5/56.9 |
N |
| 5063 |
14 |
AJK |
0.1%7334 |
99.5/66.1 |
N |
| 5063 |
17 |
AJK |
0.3%7334 |
96.4/53.1 |
N |
| 5061 |
14 |
AJK |
0.3%7422 |
101.7/66.3 |
N |
| 5064 |
13 |
AJK |
0.3%7422 |
96.1/51.1 |
N |
In terms of gloss, all samples showed significant improvement after wetting agent addition; the appearance is smooth and flat with no defects.
Defoamer dosage: 0.2%
| Defoamer Added to White Paint |
Dry film thickness (μm) |
Manufacturer |
Wetting agent dosage/model no. |
Gloss 60°/20° |
Appearance defects (Y/N) |
| White paint without defoamer |
|
|
无 |
|
|
| TEGO810 |
15 |
TEGO |
0.3%4100 |
85.6/32.7 |
N |
| TEGO902 |
13 |
TEGO |
0.3%4100 |
75.1/25.8 |
N |
| BYK028 |
18 |
BYK |
0.3%349 |
99.1/55.2 |
N |
| BYK024 |
23 |
BYK |
0.3%349 |
98.3/50.8 |
N |
| 5062A |
13 |
AJK |
0.3%7422 |
98.1/55.7 |
N |
| 5062A |
17 |
AJK |
0.1%7334 |
98.4/62.1 |
N |
| 5062A |
18 |
AJK |
0.3%7334 |
97.9/73.4 |
N |
| 5063 |
14 |
AJK |
0.3%7422 |
98.7/71.6 |
N |
| 5063 |
15 |
AJK |
0.1%7334 |
98.4/97.1 |
N |
| 5063 |
13 |
AJK |
0.3%7334 |
97.1/67 |
N |
| 5661 |
20 |
AJK |
0.3%7422 |
102.7/67.5 |
N |
| 5064 |
22 |
AJK |
0.3%7422 |
99.1/61.2 |
N |
Epoxy system defoamer test summary (statistics dated May 11): Gloss significantly increased after wetting agent addition; surface appearance is smooth and flat with no defects. Based on comprehensive evaluation, 5062A and 5063 are recommended for use in epoxy systems.
Your message must be between 20-3,000 characters!
