Description of UltraConductive Coating
UltraConductive™ coating is a two-component epoxy coating designed as a single-layer spray coating for Zone 2A lightning strike protection (LSP) and surfacing of composite parts on aircraft. The coating is designed for direct spray application to the tool surface, precoated with release agent.
Features and benefits:
- Weight Savings: at 140 g/m², coating offers a 35-55 % direct weight savings over most conventional expanded copper foil products.
- Process Compatible: enables process automation – cures during composite cure cycle.
- Convenient: reduces material and labor costs by requiring fewer surface materials – compatible with existing primers and topcoats.
- Improves safety: eliminates unnecessary layers of dielectric materials used above conventional lightning strike protection to correct surface imperfections.
Each component is shipped separately in a moistureproof container.
Shelf life of each component is one year from date of manufacture when stored at 4 to 30 °C (40 to 86 °F) or below in original, unopened container.
Shelf life of combined coating system is 90 days when stored at -12°C (10°F) or below in moisture-proof container.
Before using this or any SOCOMORE product, refer to the Safety Data Sheet (SDS) and label for safe use and handling instructions.
For industrial/commercial use only.
Must be applied by trained personnel only. Not to be used in household applications. Not for consumer use.
Manufactured for SOCOMORE by: LORD Corporation, Saegertown, PA.
Directions for use
Coat tool/mold surfaces with a release agent. If required, mask off desired sections.
• Prior to mixing together, thoroughly agitate each component independently for 10 minutes using a paint shaker or propeller mixer. Ensure components are fully mixed with no sediment at the bottom of containers.
• No thinners are required. If dilution is needed, use of Methyl Ethyl Ketone (MEK) is recommended.
• Combine A component resin with B component curative (mix ratio of 6.3 grams resin to 1.0 gram curative, by weight). Thoroughly mix contents on paint shaker for at least 5 minutes.
• Apply coating using HVLP spray equipment.
• Using a regulator, set the air pressure to 30 psi (2 bar).
• Strain coating system into HVLP spray gun using a 100 mesh filter.
• Spray the coating directly on to the desired surface from 10-12 inches (20-25 cm) away.
• Spray coating in alternating spray patterns with a 50 % overlap.
• Allow coating to flash off for 2 minutes between passes.
• Perform spray application in a painting booth with adequate exhaust capability.
• Desired wet thickness is somewhat dependent on ambient temperature and air humidity.
• Under most conditions, spray to a wet comb thickness of 80-90 microns to achieve a cured areal weight of 0.029 psf (140 g/m²).
• Use of witness panels is recommended until the relationship between wet and dry thickness is determined for the particular conditions.
• UltraConductive coating must be applied with a wet appearance.
• Solvent should be seen flashing off (drying) within moments after spraying.
• If no solvent is seen flashing off, the coating has been sprayed too dry- this will adversely affect the electrical conductivity.
• A dry-sprayed coating will have small spheres of material present on the coating.
• To correct, reduce airflow, increase coating flow, and/or spray closer to the part.
• Pre-bake coated tool to remove all tack and solvents from coating.
• Pre-bake in preheated oven [100 °C (212 °F)] for 30-40 minutes.
• Optimally, tool should reach 95 °C (203 °F) for 15 minutes.
• Pre-bake times may vary depending on tool thickness.
• Allow tool to cool before applying composite prepreg.
• Following pre-bake, coated tools may be processed through standard composite layup procedures, including composite prepreg application, prepreg repositioning, vacuum bagging, autoclave curing, composite part release and trimming.
• Prepreg fabric or tape may be placed directly on to the pre-baked UltraConductive coating.
• If needed, the prepreg can be gently removed and repositioned without damaging the UltraConductive coating.
• Coating cures during composite cure cycle.
• Follow cure schedule for the specific composite material.Light scuff (240 grit) and surface wipe are recommended prior to paint application to remove residual release agent.
• Typical Cured Properties*Sheet Resistance depends on coating thickness.
• At the recommended cured areal weight of 0.029 psf (140 g/m2), sheet resistance is less than or equal to 14 mohms/square.