Technical Data

Production Size

12" x 12" x 1"

Bonding

A number of bonding/brazing techniques can be used to successfully attach POCO HTC to other materials. It is critical that the joining method does not impede or interrupt the thermal transfer between the substrate and the graphite foam. One proven bonding procedure is S-Bond™ by Materials Resources International. Low temperature epoxy can also be used to bond POCO HTC. Soldering with conventional electronic soldering alloys is possible if the POCO HTC is properly coated with electroplated nickel or copper. Details of these techniques are under investigation.

Machining

POCO HTC can be machined using conventional cutting tools or it can be cut on a wire EDM machine.

Phase Change

Liquid nitrogen, Fluoinert™ and methanol can be used to fill the pores to efficiently absorb heat. Tests are currently underway.

Laminates

POCO HTC has been successfully laminated between carbon fiber and other composite fiber face sheets to build a combined structure that has greater structural properties than the material by itself. The key element is the proper use of bonding agents. Aerospace grade epoxy should be applied in thin layers. The thin layer provides the needed adhesion while not interfering with the thermal path from the POCO HTC graphite matrix to the fiber sheet.

Coatings

Testing is underway.

Absorption

While POCO HTC readily absorbs some materials, it is not wetted by water.

Chemical Reactions

Like other highly graphitic materials, POCO HTC is an inert material and is not attacked by most chemicals, except strong oxidizers.