HumiSeal® UV40 is a single component, high solids, UV curable, acrylated polyurethane conformal coating that possesses excellent chemical resistance, surface hardness, flexibility and moisture resistance. The material is tack-free after exposure to UV light. A secondary moisture cure mechanism will cure unexposed areas of the coating within 2-3 days at ambient conditions. The coating fluorescence under UV light to allow for coating inspection and can be applied by selective coating equipment. UV-40 curable conformal coating is a single layer coating that is specifically designed for maximum level of protection of PCB’s. It is a thin film that is ensured on the topology of the circuit board and protects it from harsh chemical and mechanical environments.
UV curing is a process in which UV light is used to start a photochemical reaction that generates a microscopic cross linked network of acrylated polyurethane. UV Curable Conformal coatings can be successfully applied to substrates that have been cleaned prior to coating and also to substrates assembled with low residue, “no clean” assembly materials. Users should perform adequate testing to confirm compatibility between the conformal coating and their particular assembly materials, process conditions and cleanliness level.
UV curable conformal coating is done by spaying the UV resin on the PCB using traditional spraying equipment. This provides extremely fast curing for a period of time with maximum production speed. This resin gets completely solidified within seconds of application on any surface. This causes a minimal effect on the environment. It comes with a super adhesive solid material that is non reactive to solder.
It provides resistance to a wide range of chemical solvents, moisture, and inductance which are major potential contaminants of a PCB. UV curing of a circuit board makes it flexible to a wide range of temperature. The cured film has a high degree of environmental and chemical resistance and will be more difficult to remove than traditional conformal coatings.
HumiSeal® UV40 conformal coating is:
HumiSeal® UV40 conformal coating has:
Application of HumiSeal® UV40 Conformal Coating
Conformal coatings can be successfully applied to substrates that have been cleaned prior to coating and also to substrates assembled with low residue, “no clean” assembly materials. Users should perform adequate testing to confirm compatibility between the conformal coating and their particular assembly materials, process conditions and cleanliness level.
1.10 ± 0.05 g/cm3
Minimum Solids Content
Viscosity, per Fed-Std-141, Meth. 4287
650 ± 150 centipoise
Recommended Coating Thickness
25 – 125 microns
Recommended UV Cure*
SeeTDS for Details
Shelf Life at Room Temperature, DOM
HumiSeal® Stripper 1100
Thermal Shock, 50 cycles per MIL-I-46058C
-65°C to 125°C
Glass Transition Temperature – DSC
Coefficient of Thermal Expansion – TMA
85 ppm/°C Below Tg
197 ppm/°C Above Tg
Modulus – DMA
10360 MPa @ -40ºC
4280 MPa @ 25ºC
66 MPa @ 80ºC
Flammability, per UL-94
Dielectric Withstand Voltage, per MIL-I-46058C
Dielectric Constant, at 1MHz and 25°C per ASTM D150-98
Dielectric Constant, at 10MHz and 22°C per ASTM D2520
Dissipation Factor, at 1MHz and 25°C per ASTM D150-98
Insulation Resistance, per MIL-I-46058C
8.0 x 1014 ohms (800TΩ)
Moisture Insulation Resistance, per MIL-I-46058C
4.7 x 1010 ohms (47GΩ)
Fungus Resistance, per ASTM G21
Resistance to Chemicals
*Microwave UV cure ovens equipped with “H” style bulbs recommended.
**Stripper 1100 is not available in the EU.
Other Products in this Category
UV curable UV 40 Gel
UV curable UV 40 Solar
UV curable UV 40-250
Key Tag : UV Curable Conformal Coating | HumiSeal UV40 | Dealer in India
UV Curable Conformal Coating | HumiSeal UV40 | Dealer in India