HumiSeal®️ 1B31 is a fast-drying, single-component acrylic conformal coating that provides excellent protection for PCBs against moisture and environmental factors. Once fully cured, the properties of HumiSeal®️ 1B31 are similar to those of its ready-to-use versions.
HumiSeal®️ 1B31 coating offers the following advantages:
• Exhibits excellent flexibility
• Provides protection against moisture and contaminants
• Fluoresces under UV light for easy inspection and is easily repairable
• Meets MIL-I-46058C requirements
• Meets IPC-CC-830 requirements
• Meets IEC61086 requirements
• Compliant with REACH and RoHS Directive EU 2015/863
• Available in various ready-to-use formulations for different application methods.
| Product | Viscosity
(cPs) | Solids
(%) | Density
(g/cm3) | VOC
(g/L) | Shelf Life
(DOM, Aylar) |
|---|
| 1B31 |
200 ± 15 |
35 ± 3 |
0.91 ± 0.02 |
592.0 |
24 |
| 1B31 PB 18 CPS |
18 ± 5 |
15 ± 1.5 |
0.89 ± 0.02 |
756.5 |
12 |
| 1B31 PB 23 CPS |
23 ± 5 |
16 ± 1.5 |
0.89 ± 0.02 |
747.6 |
12 |
| 1B31 PB 65 CPS |
65 ± 5 |
24 ± 1 |
0.90 ± 0.02 |
685.8 |
24 |
| 1B31/505 PB 49 CPS |
49 ± 5 |
24.5 ± 1 |
0.88 ± 0.02 |
664.4 |
12 |
| 1B31-245 |
40 ± 5 |
22 ± 2 |
0.86 ± 0.02 |
670.8 |
12 |
| 1B31/503 PB 110 CPS |
110 ± 5 |
29 ± 2 |
0.90 ± 0.01 |
639.0 |
12 |
| 1B31/521 PB23 |
23 ± 5 |
16 ± 2 |
0.89 ± 0.02 |
745.0 |
24 |
| 1B31/521 PB25 |
25 ± 3 |
16 ± 2 |
0.89 ± 0.02 |
745.0 |
24 |
| 1B31/521 PB60 |
60 ± 5 |
26 ± 2 |
0.91 ± 0.02 |
592.0 |
24 |
| 1B31/521 PB65 |
65 ± 5 |
26 ± 2 |
0.91 ± 0.02 |
667.0 |
24 |
Tack-free time: 10 minutes
Typical Properties of HumiSeal®️ 1B31 and Ready-to-Use Products in Cured State
Recommended coating thickness: 25–75 microns
Recommended curing conditions: 24 hours at room temperature or 30 minutes at 76°C
Time required to achieve optimal properties: 7 days
Recommended remover: HumiSeal®️ Stripper 1080
Thermal shock (50 cycles according to MIL-I-46058C): -65°C to 125°C
Substrate cleanliness is extremely important for the successful application of conformal coatings. Surfaces must be free from moisture, dirt, oils, flux residues, and all other contaminants. Contaminants beneath the coating may lead to issues that can cause assembly failures.
Store in tightly sealed containers, away from excessive heat or cold. HumiSeal®️ products can be stored at temperatures between 0°C and 35°C. Before use, allow the product to reach ambient temperature (18°C to 32°C) for 24 hours.
