ADVANCED CLEAR HYDROPHOBIC COATING

• Named after a penguin

• Clear

• Durable

• Abrasion/chemical resistant

• Hydrophobic

• Oleophobic

What is Gentoo?

• Performance and characteristics that have not been available

before

• Developed under an Small Business Innovation Research (SBIR)

program

• Developed as a coating for the canopies of F-16 fighter jets

• Anti-corrosion for landing gear and stainless steel cables for the

Navy

What makes it different?

• Easy-clean and self-cleaning properties

• Anti-smudge/fingerprint

• Anti-graffiti and anti-paint/ink markers

• Excellent anti-corrosion properties

• Enhanced ice-removal benefits due to low adhesion

Why is it better?

Value of the Innovation

• Military SBIR work done by Luna Innovations and

Luna is the patent holder. Patents pending.

• Worldwide exclusive license granted to UltraTech

International, Inc.

• Technology is being incubated by UltraTech’s

Advanced Technology Group (ATG) for

commercialization by August 2016.

Technical Information – General

• Hydrophobic

• Excellent adhesion

• Abrasion resistance

• Corrosion resistance

Technical Information – Water/Mud shedding

Technical Information - Durability

Combination of hard component with flexible linkers

produce high toughness for abrasion resistance and

durability

Flexible componentSynthesized, Flexibility, Adhesion

Hydrophobic

additiveBound into coating - Durable

ToughDurability, Abrasion Resistant

Technical Information – Low Sliding Angle

Contact angle Watershedding

(120 µl)

Watershedding

(50µl)

Steel 63° >45° >45°

Aluminum 60° >45° >45°

Polyurethane (MIL PRF 85285) 95° 15° 30°

GentooTM 110-117° 3-5° 7-11°

GentooControl

Technical Information - Flexibility

Coating on Al Panel - bends around

1/8” mandrel without cracking or

delamination

Gentoo Coating

½” mandrel at 52 oC

Technical Information - Durability

Transparency Haze

Bare acrylic 94.0 0.69

Gentoo coating on acrylic 94.0 0.4

Bare glass 94.0 0.9

Gentoo coating on glass 94.1 0.2

Minimal change in transparency or haze on different substrates

Technical Information - Abrasion

Abraded with 150 cycles with 316 steel wool compared with

commercial superhydrophobic

Gentoo is virtually unaltered by abrasion

Bare

Glass

Gentoo

As cast Abraded

Commercial 1

As cast Abraded

Commercial 2

As cast Abraded

Technical Information – Ice Adhesion -15°C

Surface Ice Adhesion (KPa)

MIL PRF 85285 on steel 641

Gentoo coating on MIL PRF 85285 305

Gentoo coating on steel 130

Gentoo coating significantly decreases ice adhesion,

lowering time/cost of de-icing operations

Technical Information – Anti-Graffiti/Paint

Untreated vs. Gentoo

Corrosion – Electrochemical Impedance Spectroscopy

The initial (dry) sample shows that Gentoo is not significantly better then the

current polyurethane coating (likely because it is much thinner it does not impact

electrical penetration). However, after it is wet (immersed or salt fog) the

impedance (related to electrical resistance) is much higher, showing the rate of

corrosion is expected to be better for Gentoo then for regular paints.

PU Topcoat + Gentoo (dry)

PU Topcoat + Gentoo (336 hrs)

PU Topcoat (dry)

PU Top coat (336 hrs)

Corrosion – Electrochemical Impedance Spectroscopy

• EIS – used to evaluate the barrier properties of the coatings

• Substrate - Aluminum alloy 2024-T4 treated with MIL PRF 85285

polyurethane (1 mil)

• Tested initially and after 336 hours immersion in salt fog

PU Topcoat + Gentoo (dry)

PU Topcoat + Gentoo (336 hrs)

PU Topcoat (dry)

PU Top coat (336 hrs)

Corrosion – ASTM G48-11 Crevice Corrosion

• Stainless steel coupons

• Two PTFE crevice washers

• Cut scribes to represent

damage

Corrosion – Galvanic Fastener

Salt fog for 1340 hours

• Applying Gentoo on top of traditional anti-corrosion surfaces further

enhances the corrosion resistance of the material.

Technical Information - Gentoo

Hydrophobicity and

Watershedding

Coating exhibits > 110°contact angle and <5° watershed angle.

Corrosion Protection Dense network provides a high physical barrier to electrolytes

that cause corrosion; insulating for electronic barrier for

galvanic corrosion

Adhesion The coating has robust adhesion to glass, plastic (acrylic,

polycarbonate), paint (polyurethane, latex, acrylic), and metallic

(aluminum, steel, etc.) substrates.

Flexibility, Abrasion

Resistance

The polymer coating exhibits excellent flexibility via a tough,

crosslinked polymer matrix and abrasion/wear resistance.

Thickness/Weight The coating is very thin (4-6 µm) and lightweight

Environmental

Durability

Coating shows excellent resistance to degradation from salt

spray and UV exposure.

Applications

• Anti-Corrosion – cables, equipment, landing

gear, electronics, hardware, fasteners, etc.

• Easy-Clean/Self-Cleaning – Industrial

quality clear coat trucks, equip., solar

panels, trains.

• Low Ice Adhesion - Wind turbine blades,

power lines, satellite dishes, topside of

boats, radar…

Applications - continued

• Lenses and Glass

• Anti-Graffiti

• Anti-Paint

• Anti-Smudge

• Anti-Friction

What’s Available?

PART # DESCRIPTION

4700 Gentoo - Quart Kit (Part A and B)

4702 Gentoo - 5-gallon (Part A)

4703 Gentoo - 5-gallon (Part B)

4705 Gentoo - 50-gallon (Part A)

4706 Gentoo - 50-gallon (Part B)

4105 PPE Kit - Respirator, Gloves, Goggles

4710Gentoo Demo Kit (Two aluminum samples, squirt bottle and

plastic bin)

Thank You!