TECHNICAL DATA & INFORMATION – Click to view complete technical data
UV Curing, Low Modulus, Low Outgassing, Urethane Conformal Encapsulant/Coating
UVIKOTE 7504LM-PMF is 100% solids, medium viscosity, one component, premixed frozen liquid, electrically insulating, transparent, urethane coating designed for the encapsulation and protection of electrical/electronic components mounted on printed circuit boards. This system provides an excellent combination of flexibility and low modulus for demanding applications where the management of thermomechanical stresses is required.
UVIKOTE 7504LM-PMF coating will become tack free when exposed to the proper UV light radiation. The coating will fully post cure in both the exposed and shaded areas in 14 days at 25°C and 50% relative humidity. As an alternative, the post cure for the coating in both exposed and shaded areas may be accelerated with low to moderate heat.
KEY FEATURES AND BENEFITS
• Qualified to
• Multicure mechanism for complete cure in shaded areas underneath components
• Excellent flexibility and low modulus for reduced stress in the encapsulation of sensitive components (e.g. glass-bodied diodes)
• Meets NASA condensable volatile requirements for high vacuum environments
• Highly reversion resistant for good physical stability under high heat and humidity environments
• Low Tg (-65°C) for excellent low temperature cycling, storage and performance
• Excellent adhesion to plastic/metal components and substrates. Adheres well to itself for multicoat and repair applications
• Available in pre-mixed frozen syringes for convenient dispensing. Plungers available for hand operation or pneumatic-type syringes for automated dispensing.
• Ready-to-pour viscosity and long pot life for encapsulation, potting, and thick coating applications
• No TDI, no toxic solvents, no free acrylic acid for safety
• Complete companion UV product line available:
• UVIKOTE 7503LM-PMF – low viscosity, sprayable version for circuit board coatings of ≤3 mils
• UVISTAKE 7205LM-PMF – thixotropic, non-flow adhesive for wire tacking and component staking
• UVIKOTE 7503LM Thinner – non-photosensitive, non-aromatic
• UVIKOTE 7503LM Stripper – low viscosity removal of cured coating/adhesive for repair operations
• UVIKOTE 7503LM Stripper Gel – thixotropic version for localized removal of cured coating/adhesive