2011

The Marshall Convergent Coating-1 (MCC-1) formulation was produced in the 1990s, and uses a standard bisphenol A epoxy resin system with a triamine accelerator. With the increasing heat rates forecast for the next generation of

vehicles, higher-temperature sprayable coatings are needed.

This work substitutes the low-temperature epoxy resins used in the MCC-1 coating with epoxy phenolic, epoxy novalac, or resorcinolinic resins (higher carbon content), which will produce a higher char yield upon exposure to high heat and increased glass transition temperature.

High-temperature filler materials, such as granular cork and glass ecospheres, are also incorporated as part of the convergent spray process, but other sacrificial (ablative) materials are possible. In addition, the use of polyhedral oligomeric silsesquioxanes (POSS) nanoparticle hybrids will increase both reinforcement aspects and contribute to creating a tougher silacious char, which will reduce recession at higher heat rates. Use of expanding epoxy resin (lightweight MCC) systems are also useful in that they reduce system weight, have greater insulative properties, and a decrease in application times can be realized.

This work was done by Jack Scarpa and Chat Patterson of United Space Alliance for Johnson Space Center. For further information, contact the JSC Innovation Partnerships Office at (281) 483-3809. MSC-24644-1

White Papers

Avoid the Dark Side of Quality Failure
Sponsored by Arena Solutions
Reliable VFD Cables Boost Productivity, Minimize Downtime
Sponsored by Lapp Group
The Ultimate Shaft-To-Hub Connection
Sponsored by Stoffel Polygon
From The Design Lab: An Insider’s Guide To Laser Sintering
Sponsored by Stratasys Direct Manufacturing
Optimize Production for Agile Manufacturing
Sponsored by Stratasys
Achieving Reliable Inline Measurements in Production Environments
Sponsored by Creaform

White Papers Sponsored By:

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.