phenolic
Học thuậtThân thiện
Definition
Noun: 1. A thermosetting resin: A synthetic polymer that hardens permanently when heated, derived from phenols and aldehydes. It is known for its durability, heat resistance, and electrical insulating properties.
Usage
- As a material or substance: "Phenolic" is used to refer to the resin itself or to products made from it.
- The circuit board is made from a durable phenolic.
- They used a phenolic resin as the adhesive for the brake pads.
Advanced Usage
- As an adjective (Phenolic): While the primary dictionary entry is a noun, "phenolic" is frequently used as an adjective to describe something made of or containing phenolic resin.
- The kitchen countertop had a phenolic laminate surface.
- Phenolic compounds are a class of chemical molecules, but this is a distinct chemical sense from the resin.
Variants and Related Words
- Phenol (noun): A specific aromatic organic compound (C₆H₅OH), which is a key raw material for making phenolic resins.
- Phenolic resin (noun phrase): The full technical name for the material.
- Bakelite (noun, trademark): A well-known early brand name for a phenolic resin, often used generically for old plastic items.
Synonyms
- Thermosetting polymer
- Phenol-formaldehyde resin
Different Meanings
- Chemistry Context: In a broader chemical context, "phenolic" can function as an adjective relating to phenols (a class of organic compounds). For example, "phenolic antioxidants" are found in plants. The dictionary entry provided specifically defines the noun form relating to the synthetic resin.