Composites Resins
Resins play a pivotal role as the matrix material in composite structures, bonding and encapsulating reinforcements like fibers within the composite. These materials, commonly in liquid form before curing, undergo a transformation into a solid, durable substance. Resins vary widely in type, such as epoxy, polyester, vinyl ester, and more, each offering distinct properties like adhesion, flexibility, and temperature resistance. The selection of resin significantly influences the composite's final characteristics, including strength, durability, and chemical resistance.

Latest Resins News And Updates
The new Slate truck costs less than $20,000, uses PP composite body panels
Stylish vehicle EV pickup model is supported by a simplified manufacturing process. It is also capable of customization from two seats to five seats.
WatchTAVieDA project team cuts aircraft door production time using thermoplastic composites, welding
Fraunhofer groups, Trelleborg and Airbus develop modular, fully automated assembly system concept to replace metals and time-consuming assembly that shows potential for scalability.
Read MoreGenerative Orthoses project to reshape orthopedic care
CRP Technology, MHOX and Istituto Ortopedico Rizzoli, one of the winners of the WORTH Partnership Project II, have developed bespoke orthoses using generative design, Windform GT fiberglass materials and PBF.
Read MoreRWC delivers composite frac plugs for downhole environments
Filament-wound fiberglass/epoxy frac plug billets, developed as part of a contract with an oilfield service company, address the very demanding performance needs of oil and gas.
Read MoreAimen contributes to OVERLEAF 3D printed cryogenic tank
Dual thermoplastic composite system, developed to withstand temperatures below -250°C, demonstrates aviation decarbonization strategies.
Read MoreCall for abstracts: CW Tech Days to explore high-temperature composite solutions
The fall 2025 installment of CW’s Tech Days online event series will cover high-temperature composite solutions for defense and space applications.
Read MoreFeatured Posts
Thermoplastic composite pipes provide 59% reduction in H2 distribution CO2 emissions
Hive Composites’ multilayer thermoplastic composite pipe (TPC) design meets hydrogen permeation requirements while ensuring substantial CO2 reductions compared to conventional steel pipe systems.
Read MoreRecycled carbon fiber composite panels power 40% lighter, durable semi-rigid solar panels
Designed for auxiliary power use while traveling via boat or RV, Italian startup Levante’s custom flexible or standardized semi-rigid solar panels combine the benefits of ReCarbon’s rCF and thermoplastics.
WatchThe AAMMC Tech Hub: Ramping U.S. production of large thermoplastic composite aerostructures
CW talks with Syensqo, Spirit AeroSystems and other consortia members about current funding, specification of the next world’s largest press, organizational structure and projects to support U.S. companies in the race to deliver >40,000 sustainable and efficient aircraft over the next 20 years.
Read MoreJEC World 2025 highlights: New thermoplastics, PI fiber, solutions for FR, machining, digitized processes and more
CW senior technical editor Ginger Gardiner discusses latest developments in composites from this year’s show.
WatchPlant tour: Collins Aerospace, Riverside, Calif., U.S. and Almere, Netherlands
Composite Tier 1’s long history, acquisition of stamped parts pioneer Dutch Thermoplastic Components, advances roadmap for growth in thermoplastic composite parts.
Read MoreVIDEO: Installing the world’s largest thermoplastic composites press at Airbus Bremen
At JEC World 2025, Pinette PEI detailed its latest turnkey system for future aircraft serial parts production.
WatchFAQ: Resins
What is a resin?
A solid or pseudo-solid organic material, generally of a high molecular weight. In fiber reinforced plastics, it is the resin that binds the fibers.
Source: Essentials of Advanced Composite Fabrication & Repair - Second Edition
What are the major groups of resins?
Thermoplastic and Thermoset resins.
What is a thermoplastic resin?
Polymers or copolymers that essentiall have no cross-links and can be melted or reshaped when heated to melt point or above the Tg.
Source: Essentials of Advanced Composite Fabrication & Repair - Second Edition
What is a thermoset resin?
A plastic that cures by the application of heat or by chemical reaction resulting in a cross-linked insoluble molecule; considered an irreversible process.
Source: Essentials of Advanced Composite Fabrication & Repair - Second Edition