polümeerkeraamilised

Polümeerkeraamilised, often referred to as polymer-derived ceramics (PDCs), are a unique class of advanced materials that bridge the gap between polymers and ceramics. They are synthesized through the pyrolysis of preceramic polymers, which are typically organic polymers containing elements like silicon, carbon, nitrogen, and oxygen. These polymers are processed into desired shapes, such as fibers, coatings, or bulk components, using conventional polymer processing techniques like molding, extrusion, or spinning. Subsequently, they undergo a high-temperature treatment in an inert or reactive atmosphere, causing them to transform into dense, amorphous, or polycrystalline ceramic materials.

The resulting PDCs inherit desirable properties from both their polymeric precursors and their ceramic constituents. They can exhibit excellent mechanical strength, high hardness, good thermal stability, and resistance to chemical attack, characteristic of ceramics. Simultaneously, their ability to be fabricated into complex geometries via polymer processing offers significant advantages over traditional ceramic manufacturing methods, which are often more energy-intensive and limited in shape complexity. The composition and microstructure of PDCs can be tailored by selecting specific preceramic polymers and controlling the pyrolysis conditions, allowing for a wide range of tunable properties. Applications for polümeerkeraamilised are found in areas such as aerospace, electronics, biomedical implants, and protective coatings due to their combined performance and processing benefits.