HumiSeal® 1B31
- Chemical Family
- Acrylics & Acrylates
HumiSeal® 1B31 is a fast drying, single component, acrylic conformal coating that provides excellent moisture and environmental protection for printed circuit assemblies. HumiSeal® 1B31 demonstrates excellent flexibility, fluoresces under UV light for ease of inspection and is easily repaired. HumiSeal® 1B31 coating is MIL-I-46058C qualified, IPC-CC-830 and RoHS Directive 2002/95/EC compliant.
Product families
Applications
- Electronics Coatings
Product Families
- Protective Coatings
Other characteristics
- Brand
- HumiSeal
- Features
Conformable, Easy To Modify, Excellent Flexibility, Excellent Moisture Resistance, Fast Drying, Low Viscosity
- Product Type
- 1K (1 component) Coating, Conformal Coating
- 1K (1 component) Coating
- Conformal Coating
- Application Area
- Printed Electronics
- Application Method
- Brush, Dip Coating, Spray
- Caution
Application of HumiSeal® Conformal Coatings should be carried out in accordance with local and National Health and Safety regulations.. The solvents in HumiSeal® Conformal Coatings are flammable. Material should not be used in presence of open flame or sparks. Use only in well-ventilated areas to avoid inhalation of vapors or spray. Avoid contact with skin and eyes.
- Markets
- Electrical & Electronics
- Storage
HumiSeal® 1B31 should be stored away from excessive heat or cold, in tightly closed containers. HumiSeal® products may be stored at temperatures of 0 to 35°C. Prior to use, allow the product to equilibrate for 24 hours at a room temperature of 18 to 32°C.
- Application
Cleanliness of the substrate is of extreme importance for the successful application of a conformal coating. Surfaces must be free of moisture, dirt, wax, grease, flux residues and all other contaminants. Contamination under the coating could cause problems that may lead to assembly failures.; Dipping - Depending on the complexity, density and configuration of components on the assembly, it may be necessary to reduce the viscosity of HumiSeal® 1B31 with HumiSeal® Thinner 503 in order to obtain a uniform film. Once optimum viscosity is determined, a controlled rate of immersion and withdrawal (5-15 cm/min) will further ensure even deposition of the coating and ultimately a uniform film. During the application, evaporation of solvent causes an increase in viscosity that should be adjusted by adding small amounts of HumiSeal® Thinner 503. Viscosity in the dip tank should be checked regularly using a simple measuring device such as a Zahn or Ford viscosity cup.; Spraying - HumiSeal® 1B31 can be sprayed using conventional spraying equipment. Spraying should be done in an environment with adequate ventilation so that the vapor and mist are carried away from the operator. The addition of HumiSeal® Thinner 521 or 521EU is necessary to ensure a uniform spray pattern resulting in pinhole-free film. The amount of thinner and spray pressure will depend on the specific type of spray equipment used and operator technique. The recommended ratio of HumiSeal® 1B31 to HumiSeal® Thinner 521 or 521EU is 1:1 by volume; however the ratio may need to be adjusted to obtain a uniform coating.; Brushing - HumiSeal® 1B31 may be brushed with a small addition of HumiSeal® Thinner 503. Uniformity of the film depends on component density and operator's technique.
- Coating Type
- Conformal Coating
- Technology
- Ready-to-Use Products
- Application Methods
- Brush
- Dip Coating
- Spray
- Certifications and Compliance
- REACH (Europe)
- RoHS Compliant
- Ready to Use Product Features
- Conformable
- Easy To Modify
- Excellent Flexibility
- Excellent Moisture Resistance
- Fast Drying
- Low Viscosity
- Shelf Life at Room Temperature, DOM
- 24 months
Technical data
Table 1 of 1
25 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Density | 0.91 ± 0.02 | g/cm³ | ASTM D1475 |
| Solids Content ( % by weight per Fed-Std-141, Meth. 4044) | 35 ± 3 | % | — |
| Viscosity (per Fed-Std-141, Meth 4287) | 200 ± 15 | centipoise | — |
| VOC | 592.0 | grams/litre | — |
| Drying Time to Handle (per Fed-Std-141, Meth. 4061) | 10.0 | minutes | — |
| Recommended Coating Thickness | 25 - 75 | microns | — |
| Recommended Curing Conditions | 24 hrs @ RT or 30 min @ 76°C | — | — |
| Time Required to Reach Optimum Properties | 7.0 | days | — |
| Recommended Thinner (dipping & brushing) | HumiSeal® Thinner 503 | — | — |
| Recommended Thinner (spraying) | HumiSeal® Thinner 521, 521EU | — | — |
| Recommended Stripper | HumiSeal® Stripper 1080, 1080EU | — | — |
| Thermal Shock ( 50 cycles per MIL-I-46058C) | -65 - 125 | °C | — |
