An advanced conformal coating formulated to protect electronics is the HumiSeal 1B31LOC. This innovative acrylic coating is solvent based with low VOC. It is a one component, fast drying material that has exceptional environmental and moisture protection for printed circuit assemblies. HumiSeal 1B31 has excellent flexibility, is IPC-CC-830, RoHS Directive 2002/95/EC compliant and MIL-I-46058C qualified. The acrylic material will fluoresce under UV light allowing easy inspection and reparability.
HumiSeal 1B31 has a VOC of 91 grams per liter and the drying to handle is 25 minutes per Fed-Std-141, Meth. 4287. The recommended thickness of coating for the best results is between 25 to 75 microns. HumiSeal 1B31LOC is self-extinguishing per Mil-I-46058C and it passes fungus resistance per ASTM G21. When applying this acrylic conformal coating, it is highly recommended to have a clean substrate. Surfaces are required to be clear from wax, grease, moisture, flux residues or all other contaminates for the best result of the coating. Any contaminate left under the coating can cause issues leading to assembly failures.
HumiSeal 1B31LOC can be applied by brushing, dipping, and spraying methods. When dipping, it may be required to reduce the viscosity depending the complexity, density and configuration of components on the assembly. HumiSeal thinner 710 is highly recommended to obtain a uniform film. Conventional spraying equipment is suitable when using the spray method. When spraying HumiSeal 1B31, it is important to do it in a well-ventilated area ensuring the mist is taken away from the worker. Lastly, the brushing method can be applied using a brush with a small amount of HumiSeal Thinner 701. Uniformity of the film is dependent on the operators’ technique and the density of the component.
When applying any type of coating, adhesive or sealant it is necessary to understand the proper handling and risks that are associated with the material. HumiSeal 1B31LOC needs to be stored in its tightly sealed container away from cold and excessive heat. Shelf life of this material is up to 24 months when stored at room temperature. This product can be stored at 0 to 35 degrees Celsius but prior to use it needs to equilibrate for at least 24 hours. The solvents in HumiSeal 1B31LOC is flammable, caution should be taken to avoid open flames or sparks. It is recommended to consult the HumiSeal 1B31LOC MSDS for more information in regards to this product.
HumiSeal is well-known worldwide for manufacturing advanced conformal coatings for the electronics industry. Research and development by the engineers have allowed HumiSeal to produce innovative products. One of the cutting edge conformal coatings manufactured is the HumiSeal 1B31LOC. This product is a solvent based, low VOC, acrylic conformal coating designed to protect electronic circuit from the environmental weathering and moisture. Attain more information on this material by contacting Krayden, a certified distributor of HumiSeal conformal coatings. Consult the HumiSeal 1B31LOC TDS if more information is needed.