thermosetting

Thân thiện

Phenol resin becomes a rigid thermosetting plastic after being heated.

Definition

Adjective: 1. Having the property of becoming permanently hard and rigid when heated or cured: Describes a material, typically a polymer or resin, that undergoes an irreversible chemical change when heated. Once set, it cannot be remelted or reshaped by reheating.

Usage

The term "thermosetting" is used almost exclusively as a technical adjective to classify and describe materials, particularly in chemistry, materials science, engineering, and manufacturing. It contrasts with "thermoplastic."

Examples

• Adjective:
  • Bakelite is a classic example of a thermosetting plastic.
  • The epoxy adhesive is a thermosetting resin; it cures when the two parts are mixed.
  • These components are made from a thermosetting polymer for high heat resistance.

Advanced Usage

• "Thermosetting polymer/resin/plastic": The most common collocations, specifying the type of material.
  • The circuit board is encapsulated in a thermosetting resin for protection.

Variants and Related Words

• Thermoset (noun): A material that has the property of being thermosetting.
  • The part is molded from a thermoset.
• Thermoplastic (adjective/noun): The direct antonym; describes a material that becomes soft and moldable when heated and hardens upon cooling, a process that is reversible.
  • Unlike thermosetting plastics, thermoplastics can be recycled by remelting.

Synonyms

• Heat-set: (Technical) Hardened by heat.
• Thermohardening: (Technical) An alternative term with the same meaning.

Antonyms

• Thermoplastic: (Adjective/Noun) A material that softens when heated and hardens when cooled, capable of being reshaped repeatedly.

Học thuật

Adjective

1. having the property of becoming permanently hard and rigid when heated or cured
   • the phenol resins and plastics were the original synthetic thermosetting materials

Từ đồng nghĩa

• thermoset