phenol-formaldehyde resin

Phenol-formaldehyde resin is a synthetic thermoset polymer created through condensation polymerization of phenol and formaldehyde, representing one of the earliest commercially successful plastics developed in the early 20th century. It is widely used in electrical insulation, adhesives for plywood and particle board, brake friction materials, and molded components requiring rigidity and heat resistance. Engineers select phenol-formaldehyde resin for applications demanding dimensional stability at elevated temperatures, excellent electrical insulating properties, and cost-effectiveness, though it has been partially displaced in some applications by epoxies and other advanced thermosets offering greater flexibility and lower volatility during processing.