The principle of impregnating carbon graphite is to press the impregnating agent into the pores of the carbon graphite material under high temperature and high pressure conditions to form a network structure and block the pores, thereby improving various properties of the material. Specifically, the impregnation process includes the following key steps and principles:
Preparation before dipping: including blank processing, rinsing, low-temperature baking, etc. Blank processing is to process graphite rods into tubes, leaving a processing allowance; flushing is to use compressed air or tap water to clean surface dust; low-temperature baking is to remove moisture in the pores.
Impregnation treatment: Put the processed blank into the impregnation kettle, evacuate and then introduce compressed air to allow the impregnation agent to penetrate into the pores. This process is usually carried out under high temperature and pressure to ensure that the impregnating agent fully penetrates and solidifies.
Curing treatment: Put the impregnated products into the curing kettle, pressurize and heat for curing to ensure that the impregnating agent is completely cured and improve the mechanical strength and chemical stability of the material.
Performance improvement: Through impregnation treatment, the mechanical properties, thermal properties, chemical stability and electrical properties of carbon graphite materials can be significantly improved. Impregnating agents can fill pores, reduce porosity, increase volume density and mechanical strength; at the same time, impregnating agents can also improve the electrical conductivity, thermal conductivity and corrosion resistance of the material.
