HUMISEAL 1B51NS-60
Harmonization Code : 3403.19 | Lubricating Preparations (With 70% or More Petroleum Oils) For Automotive and Other Uses
Main features
- Low Moisture-Vapor Transmission
- Rapid Synthetic-Rubber Handling
- Flexible Low-Stress Protection
Product Description
HumiSeal 1B51NS-60 Synthetic Rubber Conformal Coating is a fast-drying single-component synthetic rubber conformal coating for printed circuit assemblies. The liquid has a density of 0.81 +/- 0.02 g/cm^3, 22 +/- 1.5% solids, and a viscosity of 185 +/- 30 cP. It dries to handle in 10 minutes and is applied at a recommended thickness of 25 to 75 um. The cured film is flexible, low stress, repairable, and has very low moisture-vapor permeability. Cure is completed in 24 hours at room temperature or 30 minutes at 76 deg C.
Key features
- Low moisture-vapor permeability: The synthetic rubber film has documented moisture-vapor transmission below 1 g/(m^2 day mil).
- Ten-minute dry-to-handle time: The coating reaches the documented handling stage in 10 minutes.
- Flexible low-stress film: The cured coating is flexible, low stress, and repairable.
Applications
- Conformal coating of printed circuit assemblies
- Moisture and environmental protection of electronic assemblies
TDS, SDS & Technical Documents
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 | 0.81 +/- 0.02 | g/cm^3 | ASTM D1475 |
| Solids content | 22 +/- 1.5 | % by weight | Fed-Std-141 method 4044 |
| Viscosity | 185 +/- 30 | cP | Fed-Std-141 method 4287 |
| VOC | 632 | g/L | As supplied |
| Drying time to handle | 10 | min | Fed-Std-141 method 4061 |
| Shelf life at room temperature | 18 | months | From date of manufacture |
After-processing / final-state properties
Typical cured-film, environmental, and electrical 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 | -65 to 125 | deg C | 50 cycles per MIL-I-46058C |
| Glass transition temperature | 14 | deg C | DSC |
| Coefficient of thermal expansion | 55 | ppm/deg C | TMA |
| Moisture-vapor transmission | < 1 | g/(m^2 day mil) | ASTM E398-03 |
| Dielectric withstand voltage | > 1500 | V | MIL-I-46058C |
| Dielectric breakdown voltage | 4900 | V | ASTM D149 |
| Insulation resistance | 2.0 x 10^14 | ohm | MIL-I-46058C |
| Fungus resistance | Passes | - | ASTM G21 |
