Resin Impregnated Carbon Graphite
Resin Impregnated
Carbon Graphite
Resin-Impregnated Carbon is impregnated in the pores in carbon to improve strength, impermeability and slide properties. This material is recommended for machine parts that must run submerged in water, water-based chemicals, or organic chemicals with low friction and long wear life.
When the powders and the binders are mixed, they will then be moved into the next phase of carbon graphite production which is pressing. When successful molding has taken place, the carbon graphite parts will then be baked. Baking is a vital part of the process because up until this point, the binder is simply holding the powders together, but not providing the strength carbon graphite parts are known for. After the kilning process, carbon graphite materials become porous. To close the porosity is important to let the material harden, to improve wear resistance, to have better heat and chemical resistance and to make the material water proof.
Given the specialized nature of these materials, they are generally used for low temperature applications, they provide for good sliding properties. These characteristics makes them ideal for seals, bearing and rotor vanes, and they can be used in both wet and dry running applications.
Usually Phenolic Resin, Furan Resin and sometimes Epoxy Resin, these 3 kinds of resin are applied as the impregnation agent in order to improve the seal ability and decrease the porosity of Carbon Graphite.
Technical properties of Resin Carbon
Properties | Unit of Measurement | Values |
Bulk Density | g/cm3 | 1.75 |
porosity | % | <4 |
Flexure strength | MPa | 60 |
Compressive strength | MPa | 210 |
Young’s modulus | GPa | 18 |
Coefficient of thermal expansion | 10-6/ok | 4.6 |
Thermal conductivity | W/mk | 11 |
Temp limit (oxidizing atmos.) | °C/°F | 200/390 |
Temp limit (inert atmos) | °C/°F | 200/390 |