Acrylic conformal coatings are perhaps the most popular of all conformal coating materials due to their ease of application, removal and forgiving nature. Acrylics dry rapidly, reaching optimum physical properties in minutes, are fungus resistant and provide long pot life. Additionally, acrylics give off little or no heat during cure, eliminating potential damage to heat-sensitive components. They do not shrink during cure and have good humidity resistance and exhibit low glass transition temperatures.
Acrylic resin coatings are easy to apply and can be easily removed for rework using solvents. Spot removal of the coating to repair a solder joint or replace a component can be easily accomplished by localised solvent application. Although not encouraged, Acrylic coatings can be soldered through if preferred.
Silicone conformal coatings are most widely used in high temperature environments due to their innate ability to withstand prolonged exposure to higher temperatures than most other conformal coating chemistries. This attribute has made them the primary choice for underhood automotive applications. They are also capable of being applied in thicker films making them useful as a vibration dampening / isolation tool if the coated assembly is to be placed in a high vibration environment. Rework of Silicone coated assemblies can sometimes be difficult due to their chemical resistance and the fact that, unlike Acrylics and Polyurethanes, they do not vaporize with the application of heat. These products do not necessarily represent our complete Silicones range.
HumiSeal´s Strippers are specifically formulated to be effective on different coating chemistries. To insure that you are inquiring about the correct Stripper, please view the Technical datasheet for your specific Coating. The appropriate Stripper is identified on the datasheet. Once you have identified the correct Stripper you can return to this page to obtain the technical datasheet (TDS) and material safety datasheet (MSDS) for the Stripper.
These products do not necessarily represent our complete Strippers range.
HumiSeal’s Synthetic Rubber products are unique formulations that may enable the user to achieve specific protection / environmental goals not offered by “traditional” coatings. Synthetic Rubber materials are characterized by extremely low glass transition temperatures, resulting in stable modulus over a wide temperature range and extreme flexibility. These products do not necessarily represent our complete Synthetic Rubber range.
HumiSeal´s Thinners are specifically formulated to be used in conjunction with specific coating products. To insure that you are inquiring about the correct Thinner, please view the technical datasheet for your specific coating. The appropriate Thinner is identified on the datasheet, be aware that there may be two different Thinners referenced on the datasheet. This difference is directly related to your specific application method. Once you have identified the correct Thinner you can return to this page to obtain the technical datasheet (TDS) and material safety datasheet (MSDS) for the correct Thinner. These products do not necessarily represent our complete Thinners range.
Polyurethane coatings are available as either single or two-component formulations. Both formulations provide excellent humidity resistance and far greater chemical resistance than Acrylic coatings. Single component Polyurethanes, while easy to apply, enjoy long pot life but sometimes require very lengthy cure cycles to achieve full or optimum cure. In some instances the cure cycle can be accelerated by the judicious application of heat. Two component formulations can reach optimum cure properties in as little as one to three hours with the assistance of heat. However, when compared to single component formulations, two-component formulas can have a relatively short pot life sometimes making them difficult to work with. Removal of Polyurethane coatings can be difficult due to their very high resistance to solvents. For single-components, the preferred method of removal is via burn through for spot repair, while the use of specially formulated strippers enables the user to completely remove the coating from an entire PCB assembly for more wide-ranging rework concerns. These products do not necessarily represent our complete Urethanes range.
HumiSeal UV40 is now UL recognized and represents an exciting innovation in UV curable chemistry that provides performance superiority, over both traditional UV curable products and solvent-based materials. UV40 not only maintains the rapid cure speed and environment-friendly nature that is popular in today’s electronic fabrication, it also offers advantages not found in existing UV curable products:
- Greater adhesion to a wide range of commonly used solder resists
- Higher IR (insulation resistance) and MIR (moisture insulation resistance)
- Resistance to a wider range of solvents
- Greater flexibility at a wide range of temperatures
- Does not become brittle at low temperatures
- A truly reliable secondary (shadow area) moisture activated cure mechanism.
These products do not necessarily represent our complete UV Curable (Type AR/UR) range.
Water-based conformal coatings, by their very nature are extremely safe, low odour, low VOC products, developed to enable customers to meet the ever stricter emissions targets, not to mention the various health and safety requirements placed on industry. It enables enormous reductions in VOC emissions especially in the automotive sector. Some products from the range, such as 1H20 AR3 can protect electronics assemblies at temperature extremes far beyond the capabilities of existing resin-based alternatives. These products are based upon the standard chemistries of Acrylic, and Polyurethane, offering the closest match in protective performance to the existing solvent-based conformal coating range. If you have a requirement please contact HumiSeal for assistance. These products do not necessarily represent our complete Water Based range.