Definition

Noun: A synthetic thermosetting resin produced by the condensation of a phenol with an aldehyde, especially formaldehyde. Phenolic resins are known for their hardness, heat resistance, and electrical insulating properties. They are commonly used in molded products, adhesives, coatings, and as a binder for materials like wood fiber and abrasive wheels.

Usage Examples

• The old radio's casing was made from a durable phenolic resin.
• Phenolic resin is a key component in the brake pads of many vehicles.
• This adhesive is formulated with a phenolic resin for superior water resistance.

Advanced Usage

• Phenolic resin is often referred to by the trade name "Bakelite," one of the first plastics made from synthetic components.
• In composite materials, phenolic resin can be used as a matrix to bind carbon or glass fibers, creating parts with high fire resistance.

Variants and Related Words

• Phenol-formaldehyde resin: A more specific chemical name for the most common type of phenolic resin.
• Phenolic (noun/adjective): Often used as a shorter form to refer to the resin or materials made from it (e.g., a phenolic handle, phenolic compounds).
• Thermoset / Thermosetting polymer: The broader category of plastics that, like phenolic resin, undergo an irreversible chemical change when heated and cannot be remelted.

Synonyms

• Phenol-formaldehyde resin
• Phenoplast (technical term)

Related Phrases

• Phenolic resin binder: Specifically highlights its use as an adhesive or binding agent in industrial materials.
• Cured phenolic resin: Refers to the resin in its final, hardened state after the thermosetting process is complete.

Noun

1. a thermosetting resin