Phenolic - General term used to describe a group of thermosetting resins created by reacting a phenol with an aldehyde, followed by curing and crosslinking. The most common is phenol-formaldehyde. Usually, phenolic is extended by combining it with a filler. Phenolics are usually compression molded and they have good strength and toughness, good arc resistance and other electrical properties, good resistance to solvents and high temperatures, and are bargain-priced.
Phenolic, discovered in 1907 by George Baekeland, is one of the oldest types of thermosetting resins. Phenolics are now considered the workhorse of the plastics industry.
Good Dimensional Stability (131), High Heat Resistance (115), Good Electrical Properties (68), Fast Cure (53), High Strength (51), Good Strength (51), General Purpose (49), Good Moldability (38), Flame Retardant (36), Halogen Free (35), 79 More...
Electrical Parts (83), Automotive Applications (71), Electrical/Electronic Applications (70), General Purpose (41), Coating Applications (33), Appliances (32), Housings (27), High Temperature Applications (26), Insulation (21), Bonding (18), 63 More...
- Requires fillers for moldings
- Poor resistance to bases and oxidizers
- Volatiles released during cure (a condensation polymer)
- Limited to dark colors due to oxidation discoloration
Typical Properties and Processing Information
View material property information for Phenolic plastics.