[PSUBS-MAILIST] Polyurea Coatings for Submarines

[Brent Hartwig <brenthartwig@hotmail.com>]

I have two local friends, that spray polyurea coatings commercially.  One sprays in on there steel dock weldments and other items. The brand they use is TurboLiner.  At the moment I plan to have them spray the interior of my sub after all the syntactic foam is cured.
 
http://www.turboliner.com/turbo_liner_vs_others.html
 
 
 
"Polyurea is a type elastomer that is derived from the reaction product of an isocyanate component and a synthetic resin blend component through step-growth polymerization.
 
Practical uses
 

Truck bed liners

Polyurea truck bed liners form a durable, water and air-tight, permanent liner for the exterior of pick up trucks, dump trucks and steel containers. These durable, easy to clean and abrasion resistant liners protect utility trucks from their harsh duty environments. They also protect against rust and corrosion from damaging trucks and containers. Polyurea liners can also be applied in varied thickness to meet any specific application demand. Sprayed on truck bed liners are available in many colors and can be wrapped over the top edge of the truck bed to provide added protection from impact and abrasion.
 

Pipe and pipeline coatings and linings

Polyurea coatings and linings are increasingly being used to protect steel pipes from corrosion. Polyurea has demonstrated its ability to last longer than paint and maintenance services and costs are reduced. Polyurea is a great protective coating system for pipes that are insulated with polyurethane foam. Polyureas are also being used to line the inside of water and sewer pipes for infrastructure rehabilitation work.
 

Bridge coating

Polyurea's ability to outlast paint and fight off corrosion is a major reason these systems are being specified for bridge deck and structure coating by State DOT's around the nation. The most common applications of polyurea coatings on bridges are over steel and concrete.
 

Joint fill / caulk

Polyurea is being successfully used as a multi-purpose joint fill, caulking and sealant material. It can provide a flexible, durable, weather-tight and traffic resistant seal for all types of building joints, such as expansion joints and control joints in masonry floors, perimeter joints, panels and doors, water reservoirs, etc. It has excellent crack-bridging properties with high elongation and tensile strength. The fast cure time and insensitivity to moisture allows for a quicker installation with a wider application window. Proper surface preparation and substrate condition is always necessary.
 

Holding tanks

Tank coatings

Polyurea coatings protect steel tanks from corrosion, chemicals, and other natural weather and jobsite elements. With proper surface preparation, substrate condition, formulation choice, primers, and installation procedures, polyurea goes on fast and stays on long. Polyureas are great for extending the life of older tanks and can offer limited structural characteristics as well. These systems can be applied during primary construction or in a retrofit environment. With their fast cure times they are ideal for retrofit since down time is significantly minimized compared to some competing materials.
 

Tank linings

Polyurea linings are resistant to many chemicals and industrial liquids. With their fast application advantages and ability to adhere to properly prepared substrates, polyureas are ideal for new storage tank primary lining and rehabilitation projects.
 

Waste water treatment linings

Fast cure, chemical and abrasion resistant, concrete primary and secondary containment linings.
 

Aquarium lining

Aquariums have also found benefits with polyurea. The ability to form to properly prepared custom shaped walls and themed ornaments make this system desirable. A spray applied, water resistant liner, available in a variety of colors with rapid return to service installation is why facility owners are turning to polyurea.
 

Landscape & water containment

Landscape designers and contractors have found similar benefits with polyurea. Polyurea is often used to contain water for ponds and pool decorations to form a primary containment liner. Use of geotextile material is common when applying polyurea over dirt. Proper surface condition is vital when applying over concrete and most other substrates.
 

Marine

Above the water line and below, polyurea can be very effective in protecting steel, aluminum, and fiberglass in a variety of water sport and commercial marine applications. From sound attenuation for fishing canoes, to fish hold liners, to hull protection and bilge liners, polyureas are used in many abrasion, chemical and corrosion resistant marine applications. "
 
 
http://en.wikipedia.org/wiki/Polyurea
 
 
Sounds like a good product for coating concrete submarines as well.
 
 
Another brand of polyurea coatings is http://www.xtremeliners.com/
 
 
There is also some interesting polyurea data here in this PDF.
 
http://www.kta.com/knowledge/PACE2005/Polyurea%20Coatings%20CLO.pdf
 
 

Regards,
Szybowski