Abstract: An acrylic sealant is configured to seal a graphite disk that comprises: (a) one or more of a di- or tri-functional acrylate monomers, a mono-functional [meth]acrylate monomer, and an oligomeric monomer including a plurality of [meth] acrylate functional groups; and (b) a radical initiator. A method for making an impregnated, cured disk includes the steps of (a) positioning a raw graphite disk into a vacuum/pressure chamber; (b) applying a vacuum in the chamber after the raw graphite disk is positioned there; (c) immersing the raw graphite disk in a liquid acrylic sealant in the chamber after the vacuum is applied; (d) removing the vacuum in the chamber and applying a pressure to sufficiently impregnate the raw graphite disk with the liquid acrylic sealant and create an impregnated graphite disk; (e) placing the impregnated graphite disk into a curing chamber; and (f) in the curing chamber, heating the impregnated graphite disk in order to cure the liquid acrylic sealant inside of the graphite disk.

Abstract: A method and system are disclosed for impregnating a porosity of a part with sealant without immersing the part in sealant or using a known batch process. At least one fill source and at least one drain source are connected to the part, wherein the fill source and drain source are each in communication with a porosity of the part. In one aspect a vacuum is applied through the fill source and through the porosity, and sealant is then released into the porosity. Pressure can be applied to the porosity after the sealant is released into the porosity to assist in pushing the sealant into the porosity. Excess uncured sealant can be removed by injecting water into the porosity and then drawing out the water with the excess sealant. Heated water may be introduced into the porosity to cure the sealant if the sealant requires heat to cure.

Abstract: A sealant configured to saturate and seal a graphite plate, such as a type of graphite plate that may be used in a hydrogen (H2) fuel cell, wherein the sealant may be one or more, or a mixture, of ethoxylated monomers. In some embodiments herein the sealant does not have an acid or a surfactant. Also disclosed is a graphite sheet impregnated with a sealant.

Abstract: A device and method for curing solvent-impregnated (or saturated) graphite parts includes a cure module, wherein graphite parts saturated with a sealant are positioned in the cure module. Water is then placed in the cure module until the graphite parts are immersed in the water. The cure module is then pressurized to between 1 bar-20 Bar or more and the temperature of the water is maintained at any temperature from 90° C.-225° C. or more.