Super-Hydrophobic

Sprays

Benjamin Tate and Dillon Stanhope

●definition - fear of water

●Often appears in people infected with

rabies

●Water repellent surfaces

Hydrophobia

●Can be found in nature○The lotus plant has formed hydrophobic

properties on its leaves

●Created using nanostructures

Hydrophobic Surfaces

● Hydrophilic surfaces - contact angle less than 90

degrees

● Hydrophobic surfaces - contact angle greater than 90

degrees

○ Superhydrophobic surfaces - Contact angle of 150

degrees

Hydrophobic Surfaces

●Wenzel○hydrophobic

●Cassie-Baxter○super-hydrophobic

Hydrophobic States

●Waterproof

●Anti-corrosive

●Anti-icing

●Self- cleaning

Applications

Active(MnO2/PS) nano-composite

(ZnO/PS) nano-composite

Precipitated calcium carbonate

Carbon nano-tube structures

Silica nano-coating

What’s in the Spray?

InactiveLiquified Petroleum Gas

Ethyl Acetate

Methyl Acetate

n-Butyl Acetate

●Consumer/Industrial

●2-3 Step System

●Not Permanent

NeverWet

●Single Step Application

●Paint on Coating

●Pre-Coated Products

Hydrobead

●Single Step Application

●Prioritizes Safety

LiquidOff

Coatings

Required

Drying

Time

Life-Time Price

NeverWet 2 12.5 hours Unknown $16.87

Hydrobead 1 20 minutes 1-3 years $19.50

LiquidOff 1 6-8 hours 1-3 years $39.99

http://www.asknature.org/strategy/714e970954253ace485abf1cee376ad8

http://www.neverwet.com/applications.php

http://www.rustoleum.com/en/product-catalog/consumer-brands/neverwet/neverwet-kit

http://www.hydrobead.com/#!howtohydrobead/c1a6d

http://www.livescience.com/42461-how-neverwet-coating-works.html

http://www.biolinscientific.com/attension/applications/?card=AA7

http://www.homedepot.com/catalog/pdfImages/9d/9d28a478-3317-4f42-8418-9e000bdbdfe6.pdf

Works Cited