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.

Creating a composite battery insert-stud solution for EV trucks
Fastening/Finishing

Creating a composite battery insert-stud solution for EV trucks

Bossard worked with an OEM and Tier supplier team to meet tight electrical insulation and packaging tolerances while reducing tooling, molding and assembly costs.

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Latest Resins News And Updates

Epoxies

Super Resin Inc. highlights plant-based epoxy resin, foam core 

Eco-friendly resin system using glycol lignin offers an eco-friendly option for CFRP structures and components, and core materials.

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HyWaSand demonstrates large-series production potential for automotive TP sandwich components

Storage compartment flap for truck interior produced via fully automated continuous fiber thermoplastic sandwich molding technology shows suitability for series manufacture.

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Thermoplastics

Last call for ITHEC conference abstracts

The thermoplastic composites event, taking place Oct. 9-10 in Bremen, Germany, is seeking oral and poster contributions before March 31.

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Trends

ECOHYDRO project to enable recyclable composites for hydrogen storage

With the involvement of two schools from the Institut Mines-Télécom, the 4-year project aims to improve the intrinsic properties of a composite material based on Elium via four concrete demonstrators.

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Bonding/Welding

Hexcel, Arkema present CFRTP aerospace demonstrator in HAICoPAS

Project optimized design and production of UD composite tapes reinforced with a PEKK matrix, using a continuous in-situ welding (ISW) assembly system.

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Thermoplastics

Fraunhofer IWS completes MFFD longitudinal fuselage joint using CONTIjoin technology

Thermoplastic composite upper and lower half shells for the Multifunctional Fuselage Demonstrator were welded using CO2 laser over a total length of 8 meters.

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Aerospace

From the CW Archives: I see thermoplastics in your future

Thermoplastics are evolving quickly into larger structures and clearly will have a significant role to play in the next commercial aircraft program — whenever that’s announced. This edition of “From the CW Archives” looks back on a thermoplastics pioneer.

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Ketones

Eaton developing carbon-reinforced PEKK to replace aluminum in aircraft air ducts

3D printable material will meet ESD, flammability and other requirements to allow for flexible manufacturing of ducts, without tooling needed today.

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Composites 4.0

Plant tour: Sekisui Aerospace, Orange City, Iowa, Renton and Sumner, Wash., U.S.

Veteran composites sites use kaizen and innovation culture to expand thermoplastic serial production, 4.0 digitization and new technology for diversified new markets.

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Thermoplastics

Composites end markets: Electronics (2024)

Increasingly, prototype and production-ready smart devices featuring thermoplastic composite cases and other components provide lightweight, optimized sustainable alternatives to metal.

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Pressure Vessels

Update: THOR project for industrialized, recyclable thermoplastic composite tanks for hydrogen storage

A look into the tape/liner materials, LATW/recycling processes, design software and new equipment toward commercialization of Type 4.5 tanks.

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Epoxies

From the CW Archives: Fast-cure epoxies for automotive fabrication

Sara Black’s 2015 report on the development of snap-cure epoxies for automotive manufacturing still resonates today. 

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FAQ: 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

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