HUMISEAL 1B31-S
Harmonization Code : 3403.19 | Lubricating Preparations (With 70% or More Petroleum Oils) For Automotive and Other Uses
Main features
- Rapid Acrylic Film Handling
- UV-Assisted Coating Inspection
- Ambient or Accelerated Cure
Product Description
HumiSeal 1B31S Acrylic Conformal Coating is a fast-drying single-component acrylic conformal coating for moisture and environmental protection of printed circuit assemblies. The liquid has a density of 0.91 +/- 0.02 g/cm^3, 35 +/- 3% solids, and a viscosity of 200 +/- 15 cP. It dries to handle in 10 minutes and is applied at a recommended thickness of 25 to 75 um. The coating cures in 24 hours at room temperature or 30 minutes at 76 deg C, fluoresces under UV for inspection, remains flexible, and can be repaired.
Key features
- Ten-minute dry-to-handle time: The coating reaches the documented handling stage in 10 minutes.
- Flexible UV-inspectable film: The cured acrylic film is flexible and fluoresces under UV for inspection.
- Room-temperature or accelerated cure: The coating cures in 24 hours at room temperature or 30 minutes at 76 deg C.
Applications
- Conformal coating of printed circuit assemblies
- Moisture and environmental protection of electronic assemblies
Technical Specifications
General Properties
Physical Properties
Electrical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical liquid, handling, and shelf-life data before application.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Density | 0.91 +/- 0.02 | g/cm^3 | Typical liquid value |
| Solids content | 35 +/- 3 | % by weight | As supplied |
| Viscosity | 200 +/- 15 | cP | Typical liquid value |
| VOC | 592 | g/L | As supplied |
| Drying time to handle | 10 | min | Fed-Std-141 method 4061 |
| Shelf life at room temperature | 24 | months | From date of manufacture |
After-processing / final-state properties
Typical applied-film and cured-coating properties after the stated cure.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Recommended coating thickness | 25 to 75 | um | Applied conformal coating |
| Recommended cure | 24 h at room temperature or 30 min at 76 deg C | - | Cure schedule |
| Time to optimum properties | 7 | days | After application |
| Thermal-shock range | -65 to 125 | deg C | Thermal-shock exposure |
| Glass transition temperature | 14 | deg C | Typical cured coating |
| Inspection aid | UV fluorescence | - | Cured film |
| Flexibility | Flexible | - | Cured film |
| Repairability | Repairable | - | Cured film |
