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Engineered Coatings for Composites & Polymers Used in Defence & Aerospace: Now & the Future Hamburg: 10-11 February 2010 Graham Armstrong FIMF Technical Sales Manager Engineered Coatings & Coatings for Engineering Indestructible The Company and Our Products

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Engineered Coatings for Composites & Polymers Used in Defence & Aerospace: Now & the FutureHamburg: 10-11 February 2010Graham Armstrong FIMFTechnical Sales Manager

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Engineered Coatings & Coatings for Engineering

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IndestructibleThe Company and Our Products

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  • Birmingham Based SME; In Existence Since 1978

  • Suppliers of Coatings to Aero Engine, Airframe,

    Aero Ancillaries and Other “High Tech”


  • Approvals to: AS9100; ISO9001; ISO 14001

  • Stocking Facilities in:- UK; US; France; India; Singapore; Saudi-Arabia

  • Representation Additionally in:- Germany; Belgium; Holland; Scandinavia; Switzerland; Romania & Eastern Europe; Italy; Russia; Israel;

  • Export to Over 40 Countries From UK Main Warehouse

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Facilities at UK Base

  • Full Development & Quality Control


  • Innovative Development Team to Design New

    Coatings to Meet Ever Increasing Technical


  • Full Product Manufacturing

  • Total Commercial & Technical Back Up Teams to

    Support Distributors and Clients

  • Full Product Stocking

  • Full Export Packing & Despatch Team

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Rolls Royce





Meggitt ABS

HAL India

Messier Dowty



McDonnell Douglas Boeing

OEM & Overhaul: In House &

Pratt & Whitney (PWA/CPW)

MTU Germany


Allied Signal





Hamilton Sundstrand



their Suppliers/Contractors

Major Customers/Approvals

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Product Types

  • Organic Paints and Coatings Including ;

    Epoxy ; Polyurethane; Acrylic ; Silicon ;

    Silicate ; Polyimides ; blends and others.

  • Inorganic and Sacrificial Coatings ;

    Diffusion and Ceramic Products

  • Dry Film Lubricants

  • Intumescents / ”Thermal Barriers “

  • Primer-filler Coatings for Composites

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Typically, Coatings Must Resist:

  • High Heat: >500-600oC

  • High Chemical Attack: Skydrol ;

    de icers etc

  • Erosion: Rain & Particle

  • Corrosion

  • Heat & Thermal Conductivity

  • Fuel and Lubricants

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Coatings for compositesthe current status

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Initial Work

  • Intumescent System for Helicopter

    Doors & Hatches

  • Coatings for Automotive Use (Motor

    Cycle Fairings; Small Car


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Recent Development Projects

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Composite Airframed VehiclesElastomeric coatingsINTUMESCEnt & thermal barrier coatings

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Composite Airframed Vehicles

HAL DHRUV Advanced Light Helicopter

Low VOC 2K Epoxy


Low VOC 2K Epoxy

Lightweight Spray


2K Epoxy “Putty”

(Localised Use)



  • Fully Composite


  • Composite Rotor


  • Resin Rich/Weak



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Composite Airframed Vehicles

HAL DHRUV Advanced Light Helicopter

MPC 50015-R3 Primer-

Surfacer on Majority

of Airframe

MPC 50019-R3

Lightweight Filler on

Engine Firewall & on

Engine Exhausts

IP6 PU Finish (Matt IRR Camouflage Colours)

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Composite Airframed Vehicles

HAL DHRUV Advanced Light Helicopter

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Elastomeric PU Coatings


  • Erosion Resistance

  • Flexibility

  • Exterior Durability


  • Application

  • System Adhesion

Areas of Use

  • Engine Nose Spinners

  • Propeller Blades

  • Radome Coatings

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Elastomerics-Recent Projects

Engine Nose Spinners

Investigative Work

Clear or Pigmented Base Coat

Supply of “User Friendly” 2 Component System

Integration of UV Absorbers

  • Adhesion Failures in Use

  • Causes felt to be:

    Base Coat


    UV Resistance

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Elastomerics-Recent Projects

Engine Nose Spinners


  • Use of a 2K Epoxy Base Coat Solves Adhesion Issues

  • Clear Base Coat Better than Black/Aluminium

  • Use of UV Absorber Improves Both Adhesion & Clarity

  • System of Clear low VOC 2K Epoxy Basecoat, Plus UV Stabilised 2 Component Elastomeric Now Adopted and Written into Specification

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Elastomerics-Recent Projects

Propeller Coatings

  • Similar Issue: Variable adhesion of System-Epoxy Base Coat + Elastomeric PU Topcoat

    However before our involvement, client was sourcing various components from differing suppliers. All products met individual specs, but combination gave varying results

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Elastomerics-Recent Projects

Propeller Coatings

  • System Developed:

  • Low VOC 2K Epoxy Basecoat

  • Low VOC 2K Elastomeric PU

  • Single Source Supply

  • Products Balanced so 100% Adhesion

  • Additional Benefit:

  • Use of low VOC products gave

    >1/2 tonne reduction in VOC Emissions

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Elastomerics-Recent Projects

Radome coatings

Developed System:

Low VOC 2K Epoxy Seal Coat (Green Tinted)

Specially Pigmented 2K Elastomeric PU

Meets Erosion

Resistance to SAE-AMS

C-83231 & Client Electrical


  • Specific Requirements:

    Erosion Resistance

    (Rain & Particle)

    Electrical Transparency

  • Client Issues

    Current Product Exhibits “Reversion”

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Intumescent Coatings

  • Increasing Use of Composites Present

    New Challenges for Fire Protection

  • Requirements for Both “External” &

    “Cabin Interior” Systems

  • Each Require Differing Approaches

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Intumescent Coatings

Cabin Interior Systems

Both Decorative & Functional Requirements

Main Requirements:

Technical:Non Burn Coatings

Low/No Smoke Release

(FAR 25853 Specification)


Decorative:Colour & Finish Continuity

Textured Finish

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Intumescent Coatings

Cabin Interior Systems

Developed System:

Low VOC 2K Epoxy Primer-Filler (Low Weight; Thermal Barrier Effect)

Low VOC 2K PU; Non-Burn, low Smoke Emission

Nano Modified for Surface Hardness

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Intumescent Coatings

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Traditionally Metal Construction

Moving to Carbon Fibre Epoxy Composite

(Weight etc)

Within Airframe But Usually Outside Passenger


Requirement to Protect From Fire for Minimum 5


Requirement to Keep Interior Components Below

350oC (662oF)

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Intumescent Coatings

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Project with Prime Airframe Manufacturer

Three Alternative Systems Evaluated:

Substrate: Cycom 5215 T650 6K-135 5HS Prepreg

Seal Coat: Low VOC 2K Epoxy Sealer (Green Tinted)

Intumescent: 1.) IP 1265 Thermal Intumescent

2.) Combination IP1265/IP9189

3.) IP 9189 Full Intumescent

Top Coat: Low VOC 2K Epoxy Low Flame Spread Finish

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Intumescent Coatings

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Coating Systems

Clean Composite with Isopropanol

Apply Green Tinted Seal Coat to Nominal 20 microns

Apply Multi Coat Intumescent to Nominal 350 microns

Apply Finish Coat to Nominal 30 microns

All Coats Cured at 80oC (176oF)

All Panels Allowed 7 days Stabilisation Before Burn Test

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Intumescent Coatings

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Test Procedure

(to follow set up in BSX 37)

Heat Source: Rothenburger Superfire 2 Torch

Flame Temperature:1060oC (1940oF)

Flame Applied Directly to Coated Side of Test Panel for 2/5 Minutes

Thermocouples Mounted at Flame/Panel Interface and on Reverse of Panel behind Burner

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Intumescent Coatings


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Intumescent Coatings

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Intumescence Values

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Intumescent Coatings

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All Three Systems Met Original


IP 1265 Thermal Intumescent Gave Off

Slightly More Smoke

IP 9189 Selected For Use

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In mould primer application

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In Mould Primers

  • Originally Researched in

    Conjunction with Major Automotive


  • Being Investigated With Primes in


  • Has been found to be Successful

    with both Injection Systems and

    Pre-Preg Layup.

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In Mould Primers

  • Product:

    Fast Set Up Low VOC 2K Epoxy Surfacer

  • Process

    Apply Epoxy Compatible Mould Release

    Spray Apply Primer to Mould Surface

    Cure Primer; Either Force Cure or Air Dry

    Lay Up Pre-Preg or Fibre Blankets/Inject

    Cure as per Normal Process (Autoclave)

    Break Mould

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In Mould Primers

  • Benefits

    Very Even Pre-Primed Surface (Primer

    Surface Mirrors the Surface of the Mould)

    No Resin Weak Surface Areas

    No/Minimal Additional Hand Filling

    Faster/Simpler Finishing Process

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Exciting new developments

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Electrical Conductive Coatings

  • UK KTN (Institute

    of Materials)

  • Possible FP 7


  • Use of Piezo

    Electric Cells for

    Aircraft De-Icing

  • Possible Use of

    Nano Materials

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Bruisable Coatings

  • Damage to

    Composite not

    always visible

    (different to metal)

  • Danger of


    weakening not

    being apparent

  • Investigation into



  • Possible Use of

    Nano to Act as


  • Very Early Stage of

    Development -

    Watch this space!

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Increased Hardness & Resistance Properties

  • Requirement for

    Improvements in:

    Surface Hardness/

    Erosion Resistance

    Heat Resistance/

    Intumescence/Thermal Barrier

    Chemical Resistance

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Increased Hardness & Resistance Properties

  • Alternative Solutions:

    Alternative Cure

    Methods on Heat

    Sensitive Substrates

    Formulation of Cold/

    Low Temp Cure

    Products With

    Increased Performance

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Environmental/Legislative Issues



    Ongoing Restrictions

  • Solvents Directive

  • HAPS

  • CLP

  • GHS

  • CrVI Elimination

  • CRIII Elimination

  • VOC Reduction/


  • Example: Propeller Manufacturer Discussed Earlier:

    VOC Reduction of

    >1/2 Tonne

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For more information please contact our technical department

+44 (0)121 702 2485

Outside UK office hours please use the form at: -

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