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May 2003

May 2003 . Overview of 3M Aerospace product line Presentation of new material development programs 3M 9323 B/A Cocure of fluoropolymer film. Surfacing Products Update Cleaning methods. 3M Aerospace Materials. Structural Non Structural. Adhesives Structural Film adhesives Primers

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May 2003

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  1. May 2003 Overview of 3M Aerospace product line Presentation of new material development programs 3M 9323 B/A Cocure of fluoropolymer film. Surfacing Products Update Cleaning methods

  2. 3M Aerospace Materials Structural Non Structural Adhesives Structural Film adhesives Primers Core splice films Low Density Void fillers (Potting Compounds) Coatings PPT Paint Replacement film Chromated Primers Adhesion Promoters Aerospace Materials

  3. 3M Aerospace Materials 3M Structural Bonding films Positioning of existing Bonding films Curing/In-service temperature 120/120 175/135 175/175 175/230 Today : AF163-2 AF3109-2 AF191 AF30 AF126-2 AF3113-5 AF147 AF10 Applications Metal/metal bonding Composite surfacing Composite bonding Composite cocure Metal/composite bonding Metal/Metal bonding Composite/composite Metal / Metal bonding

  4. 3M Aerospace Materials Only Silan primer Epoxy Silan primer Silan based Adhesion Promotors Phenolic based 3M Primers Epoxy based Epoxy / Phenolic based With Corrosion inhibitor Solvant diluated adhesive Solvent based Low VOC

  5. 3M Aerospace Materials 3M Low Density Void Filler Applications Coresplicing Abradable layer for jet engines Low Density Void Fillers Core edge sealing Insert Bonding Core reinforcement Fuel tank inside coating

  6. 5 families of Low Density Void Fillers Cold curing H.T. curing High temp. resistance products 3500 B/A 3500-2 B/A 3439 HT 3439 HT AF High Strength products 3439 HS AF Fire, smoke, toxicity products 3524 B/A FST 3439 HS FST 3439-2 HS FST Low density products 3524 B/A 3524 B/A AF 3534 B/A Lowest density products 3584 B/A

  7. 3MAerospace Materials • Edge finishing • Honeycomb assemblage Principe : 1K epoxy film containing foaming agents and glass bubbles for assembling of light weight structures. 3M Core splice films Film Expansion range (%) AF 3002 125 - 160 AF 3024 170 - 350 AF 3030 FST 170 - 250 Expansion = Final Thickness / Initial Thickness

  8. 3MAerospace Materials 3M Polyurethane Protective Tape & Boots • Highly Durable, Long Service Life • Very High Elongation & Toughness • Puncture Resistant • Conformable to Curvatures • Solvent Free Technology • Transparent or Limited Color Matching • Easy and Fast Application • Specialized Capabilities Extremely tough puncture resistant thermoplastic elastomer coated with an acrylic adhesive

  9. 3MAerospace Materials 3M Paint Replacement Tape (Applique) • Low Surface Energy • Low WVTR • Chemical / Fluid Resistance • UV / Color Stability • Conformability • Flame Retardant • Solvent Free Coating • Simple Installation • Wide Application Environment • Coating Consistency • Enhanced Performance

  10. 3M Aerospace Materials Existing structural 3M 2K epoxy systems Mono component Bi - component Heat cure RT cure Mild heat cure Bulk • EC 2214 • EC 9360 Bulk • SW 9323 B/A • SW 9323-2 B/A • EC 2216 B/A • SW 7240 B/A FR • SW 7260 B/A (FC) • SW 7236 B/A • SW 7838 B/A EPX • DP 1xx series • DP 4xx series • DP 7xx series

  11. AF-163-2 repl. R.T. stable Films and Primer Technology Migration 120°C Curing Films AF 500 120/175°C Curing Very High Peel AF 600 175°C Curing Films Composite Bonding Non-chromated 120°C/175°C EW-5000 LowVOC Primers EW-6000

  12. Development effort : Composite bonding film adhesive Surfacing capabilities General purpose metal bonding Excellent out time (minimum 30 days) with good tack and handling characteristics New manufacturing process and system AF-500 - New 120°C curing film development Overall purpose film

  13. 30 days out time shows no change in viscosity and is expected to be adequate. Composite bonding,metal bonding, and potentially surfacing may be possible. Excellent control of cure rheology, need to optimize to composite and metal bonding performance Optimization of film adhesive in process. Status

  14. Development Effort: Targeting Broad Performance capability with high shear/service temperature applications to excellent toughness requirements with a single film adhesive Shop friendly handling Excellent Durability Significant property and handling increase of current 175°C systems AF-600 - New 175oC curing film development

  15. Property AF-600 Tack (0-10) 4 Conforming (0-10) 8 Out time at ambient 30 days Flow Controlled Reticulation Capable yes Ease of Use and Shop Handling

  16. New film adhesive will provide significant advancement in service temperature with toughness over current epoxy film systems Shop handling characteristics and out time significantly improved over current 175°C adhesives 90% of performance targets have been achieved Pilot Plant stage: evaluations and feedback to be commenced Status

  17. Primer development programs EW-5000 - 120°C In service Primer EW-5000NC - 120°C In service Primer EW-6000 - 175°C In service Primer

  18. Highlights : Primer development programs EW-5000 EW-5000NC EW-6000 Solvent Low VOC water-borne primer Chemistry Epoxy Epoxy Epoxy/Phenolic Inhibitor Chromate Non-Chromate Chromate Remarks Excellent corrosion and mechanical perf. User-friendly in shop handling Targeted for high productivity

  19. Key Properties: Primer development programs EW-5000 EW-5000NC EW-6000 Application Spray gun application Handling MEK & Skydrol resistance VOC content 247 g/dm3 166 g/dm3 233 g/dm3 Thickess range 2,5 - 9,0 µm (cured) Remarks 1 box coat to obtain 5 µm Quick flash dry Visible thickness difference prior to cure

  20. About Corrosion resistance : Primer development programs EW-5000 EW-5000NC After 100 days in 5% salt spray

  21. 3M Aerospace Materials Existing structural 3M 2K epoxy systems Bi - component RT cure Mild heat cure Bulk • SW 9323 B/A • SW 9323-2 B/A • EC 2216 B/A • SW 7240 B/A FR • SW 7260 B/A (FC) • SW 7236 B/A • SW 7838 B/A EPX • DP 1xx series • DP 4xx series • DP 7xx series

  22. 3MStructural 2K Paste Adhesives 2K Paste adhesives in Bulk SW 9323 B/A • Very high performance (Probably best RT performance of all 3M 2K paste adhesives) • Very tough adhesive • Salmon pink colour (colour changes during storage) • Temperature range from -55°C to 80°C • Best mechanical performance with 100µm bondline thickness • Optimal cure 2h at 65°C and 1kg/cm2 • Qualified and used all over Europe by Aerospace manufacturers (Eurocopter, Agusta- Westland, Eurofighter, Fairchild Dornier, Ministry of Defence UK, SAAB Military….) • Worklife of 90 min. minimum for 20g of mix

  23. 3M Structural 2K Paste Adhesives SCOTCH-WELD : PRODUCT POSITIONNING Overlap Shear Strength (MPa) Test conditions DP 760 SW 9323 B/A DP190 DP490 - 55 ±3°C 17,4 (C) 29,0 (C) 10,3 (C) 27,5 (C) +23 ±2°C 29,1 (C) 41,0 (C) 17,2 (C) 28,5 (C) +80 ± 2°C 24,2 (C) 23,5 (C) 2,8 (C) 11,9 (C) +120 ± 2°C 16,1 (C) 3,5 (C) 2,0 (C) 3,2 (C) +150 ± 2°C 11,9 (C) 2,5 (C) 1,4 (C) 1,7 (C) +175 ± 3°C 7,3 (C) 1,2 (C) 1,4 (C) +205 ± 3°C 5,2 (C) +230 ± 3°C 3,0 (C) Tg midpoint (2nd DSC Scan) Fully cured product 145-150°C 80-90°C 13-25°C 60-65°C

  24. 3M Structural 2K Paste Adhesives SCOTCH-WELD : PRODUCT POSITIONNING

  25. High Performance Surface Coating & Protection Technology Fluoropolymer Paint Replacement (Applique) Tapes & Film Currently Available ProductDescription Thickness Application 3951 Film (no adhesive) 0.1 mm (4mil) Co-cure In Process, Bonding w/Alt Adhesives 4804 Paint Replacement Tape 0.15 mm (6mil) Smooth Surfaces <100µinch Roughness For Smooth Surfaces (Not Suitable For Aircraft Exterior) 4805 Paint Replacement Tape 0.23 mm (9mil) Rough Surfaces > 100µinch Roughness For Rough Surfaces (Not Suitable For Aircraft Exterior) 5004 Paint Replacement Tape 0.14 mm (5.5mil) Aircraft Top-Coat Paint Replacement For Aircraft Exterior Paint Replacement (Applique) Technology Support Products Product Description Application 4881 Adhesion Test Strip For 5004 Indicates Adhesion Above and Below 40oz/in width per ASTM D3330 4882 Sealing Film Used with DP190 or DP460 Provides Color Matched Edge Seal 4883 Support Kit Tools to Support Installation/Repair of Paint Replacement Tapes

  26. High Performance Surface Coating & Protection Benefits of Fluoropolymer Film Coating Technology: “Paint By The Roll” Features Attributes Benefits • Low Surface Energy • Low WVTR • Chemical/Fluid Resistance • UV / Color Stability • Conformability • Flame Retardant • Reduced Dirt Collection • Reduced Corrosion • Expanded Durability • Expanded Longevity • Expanded Coverage Areas • Non-Flammable, low Smoke • Reduced Cleaning Requirement • Reduced Repairs, Extended Service Life • Extended Service Life • Extended Service Life • Enhanced Substrate Protection • Improved Safety

  27. SURFACE PROTECTION FILM OR PAINT REPLACEMENT TAPE CAN BE APPLIED TO EITHER OR BOTH SURFACES VACUUM BAG BREATHER COMPOSITE PLIES AND/OR CORE TOOL BAG SEAL AROUND PERIMETER VACUUM PORT High Performance Surface Coating & Protection Surface Protection Film Co-cured With Composite Parts • Incorporate Surface Protection Film into the Parts During Cure Colored, Cleanable, Moisture Barrier, Chemical/Fluid Resistant, UV Stable • Eliminates Finishing, Priming, Coating • Curing temperatures to 360°F (182°C) at 100 psi (Possibly Higher)

  28. 3M Low Density Surfacing Film AF 325 • New Carrier • Excellent surfacing with minimal pinholes • Low flow and customized tack • Co-curing with most prepregs • 120° / 180°C curing • Little or no resin intermingling • Readily sanded and painted

  29. Lightning Strike/EMI Protection - Surface Films AF 163-2 LS • Excellent wet-out • Flexible cures from 105° to 180°C • Minimal Preparation for paint • Excellent surface and fill .45wt: .30wt film/.15 wt grid .60 wt: .30wt film/.29 wt grid

  30. Cleaning methods The following cleaning methods are suggested for common surfacess • Aluminium • Vapor Degrease – Percholorethylene condensing vapors for 5-10 minutes.* • Alkaline Degrease – Oakite 164 solution (9-11 oz./gallon water) at 190F+/- 10F (88C +/- 5C) for 10-20 minutes. Rinse immediately in large quantities of cold running water. • Acid etch – Place pannels in the following solution for 10 minutes at 150F+/- 5F (66C +/- 2C).* • Sodium Dichromate 4.1-4.9 oz./gallon • Sulfuric Acid, 66 38.5-41.5 oz./gallon • 2024-T3 aluminum (dissolved) 0.2 oz./gallon minimum • Tap water Balance of volume • Rinse – Rinse panels in clear running tap water. • Dry – Air dry 15 minutes; force dry 10 minutes at 150F +/- 10F (66C +/- 5C) • If primer is to be used, it should be applied within 4 hours after surface preparation

  31. Cleaning methods Steel Wipe free of dust with oil-free solvent such as Methyl Ethyl Ketone (MEK)* Sandblast or abrade using clean fine grit abrasives Wipe again with solvents to remove loose particles Plastics Solvent wipe with Isopropyl Alcohol * Abrade using clean fine grit abrasives Solvent wipe again with Isopropyl Alcohol * Rubbers Solvent wipe with Methyl Ethyl Ketone (MEK)* Abrade using clean fine grit abrasives Wipe again with MEK *

  32. Cleaning methods Glass Solvent wipe with Acetone or Methyl Ethyl Ketone (MEK)* For glass applications which will be subjected to high moisture/humidity conditions, a primer should be used to prime the glass * Note: When using solvents or chemicals, be shure to extinguish all ignition sources and follow the manufacturer’s precautions and directions for use when handling such materials

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