Thermoset vs
Thermoplastic.
Cross-linked vs linear.
Thermoset polymers cross-link permanently when cured. Thermoplastics melt and reflow. Different behavior drives different applications and processing.
Key principles.
Permanent network
Once cured, cannot remelt. Decomposes if overheated. Examples: epoxy, phenolic, polyester.
Reversible
Melts and resolidifies repeatedly. Recyclable. Examples: ABS, PE, PP, nylon.
Compression, RTM
Compression molding, resin transfer molding, hand lay-up. Curing time-dependent.
Injection, extrusion
Injection molding, extrusion. Faster cycles, repeatable.
Higher temperature
Generally higher temperature limit. Better stiffness at temperature.
Easier processing
Faster cycles, easier post-processing, recyclable.
FAQ
When choose thermoset?
High-temperature service, structural composites, electrical insulation requiring permanent stability.
When choose thermoplastic?
High-volume production, recyclability, complex geometry, fast cycles. Most engineering plastics.
Composites?
Carbon fiber composites typically thermoset epoxy matrix. Thermoplastic composites emerging (PEEK CF) for recyclability.
Examples?
Thermoset: epoxy adhesives, phenolic circuit boards, SMC body panels. Thermoplastic: bottles, electronics, toys.
Service temperature?
Thermoset can exceed thermoplastic. Phenolic 200°C. Epoxy 150°C. PEEK (thermoplastic) 250°C exception.
Recyclability?
Thermoset minimal recycling (grind, fill in new resin). Thermoplastic readily recycled.
Get an instant quote
Send your CAD — we reply with detailed pricing, lead time, and DFM feedback within 4 working hours.
Start quoteTalk to an engineer
WhatsApp our team directly. Most messages answered within 12 minutes during work hours.
Open WhatsAppExplore all services
CNC, 3D printing, injection molding, sheet metal, casting, finishing — one quality system, one partner.
See all services