Coatings Technology Integration Office Overview

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Coatings Technology Integration Office Overview
1 April 2004

• Lt Shawn Fontenot
• AFRL/MLSSO
• Materials and Manufacturing Directorate
• Air Force Research Laboratory

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Overview

• The CTIO
• APC Specification
• Polysulfide Primer
• Rapid Cure Coating System Maintenance Technology
• US Paint vs Wax Weathering Effects
• Nonchrome Pretreatments PreKote
• Complete Nonchrome Systems
• Erosion Resistant Coatings

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The CTIO

• CTIO Mission Statement
• Provide prompt and dependable coating
  technologies and solutions to our ALC, SPO,
  commercial, and academic customers and suppliers.
  We accomplish this by performing comprehensive
  testing, characterization, and evaluation of
  coating systems products, equipment, and
  processes to determine compliance, compatibility,
  and performance properties prior to recommending
  transition to field use.

Research
User's Needs
User's Needs
Integrated
Candidate
Field
Development
Product
Product
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Advanced Performance Coating System Specification

• Primer
• Superior Flexibility
• Corrosion Protection
• Adhesion
• Topcoat
• Weatherability
• Cleanability

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Polysulfide PrimerHigh Flexibility

• Best Primer Ever Used (MIL-P-87112)
• 1998 NESHAP Limited Use (VOC 340 g/L)
• Compliant Version Developed
• Two Issues
• Reduces Weather Resistance
• Barrier Coating Added
• Long Cure Time in Humid Environment
• Tack-Free Accelerator in Test
• Polythioether Formulation Next Generation - NonCr

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Rapid Cure Coating System Maintenance Technology

• Air Mobility Command seeks rapid cure coating
  system for field repairs
• Increases mission readiness
• Goals
• 24 hour Dry-to-Fly topcoat
• Maximum 200 sq. ft. repair area
• Current coating system 72 hour Dry-to-Fly
• Cure Conditions as severe as 50F, 20 RH
• Maintain coating performance

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Rapid Cure Coating System Maintenance Technology

• Options Being Studied
• Third Component Catalysts (70-80 Solution)
• 90 minute pot life for 200 sq. ft. repair
• Self contained repair station
• High reactivity plural component (100 Solution)
• 5 prototypes delivered March 2005
• Thermal acceleration (Requires Additional Equip)
• UV cure (Requires Additional Equip)

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US Paint versus WaxWeather Effects

• Some Coast Guard units have been using wax to
  improve appearance of their aircrafts
• Brings out gloss, but may have dulling effect
• CTIO testing for adverse effects of wax on three
  part polyurethane system from US Paint

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Nonchrome Pretreatments(PreKote)

• Tested in several projects
• Performs well when used in conjunction with
  chrome primer
• Field test performance consistent with laboratory
  data
• Authorized as alternative to chromate conversion
  coats per Tech Order 1-1-8
• Specific application process involved

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Complete Non-Chrome Coating System

• Phase 1 (Completed)
• Screening phase for Chemical Conversion Coats
  (CCC)
• All Non-Chrome Failed MIL-C-81706
• Phase 2 (Completed)
• Four Non-Chrome Systems Recommended for Phase 3
• Not as Good as Chrome Control
• Phase 3 (Completed)
• Mixing of Components for Optimized Non-Chrome
  Coating System Not as good as chrome control
• Working field test of complete nonchrome system
  on AETC aircraft limited lab testing included
• Prekote New Deft Nonchrome Primer Deft APC
• Nonchrome Pigments developed by Univ of Missouri-
  Rolla

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Erosion Resistant CoatingsHontek Qualification

• Boeing and AFRL/MLSSO(CTIO) confirms
• White Anti Static Coating Reverting/Depolymerizing
  
• High Humid High Temperature Environment
• AMS-C-83445 and AMS-C-83231(SAE)
• Caap Co Products only vendor on QPL
• No qualified Vendors as of Fall 03
• Hontek
• Developed Erosion Resistant Coating SBIR

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Erosion Resistant Coatings

• Requirement 100 minutes to erode through .012 to
  .015 thick coating

500 MPH and 1 Simulated Rainfall
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Questions
Lt Shawn Fontenot DSN 986-9566 Comm
937-656-9566 Email shawn.fontenot_at_wpafb.af.mil