Phenolharz
Phenolharz, or phenolic resin, is a thermosetting polymer produced by the condensation of phenol (or substituted phenols) with formaldehyde. When cured, these resins form crosslinked networks that are heat resistant, dimensionally stable, and chemically durable. Phenolformaldehyde resins were among the first synthetic polymers and are still widely used in electrical, automotive, and construction applications due to their combination of heat resistance and electrical insulation.
There are two main families of phenol-formaldehyde resins: novolac and resol. Novolac resins are prepared with
Key properties include high thermal stability, good chemical resistance, and strong mechanical rigidity, but they tend
Historically, phenolharz contributed to the development of Bakelite, one of the first synthetic plastics. Today they