From the Sector

Hexcel, Arkema and their partners are pleased to announce that their joint collaborative project “HAICoPAS” has received approval from Bpifrance and the support (grant of 6 million euros) of France’s Investissements d’Avenir program.

HAICoPAS project is a collaborative project with a total amount of 13.5 million euros lead by Hexcel and Arkema and their industrial partners (Ingecal, Coriolis Composites, Pinette Emidecau Industries (PEI) et l'Institut de Soudure), and academia lead by CNRS (PIMM (CNRS - Arts et Métiers ParisTech - le Cnam), LTEN (CNRS - Université de Nantes). This project follows last year’s announcement of the strategic partnership between Hexcel and Arkema to develop high performance PEKK/carbon fiber UD tapes targeting composite parts for primary aerospace structures.

STAMFORD, Conn. – At this year's Paris Airshow [Le Bourget, June 17-23] Hexcel will promote a range of carbon fibers and composite materials used to manufacture high-performance weight-saving structures in civil aircraft, engines, helicopters, and space applications.

Visitors to the Hexcel stand will see an Integrated Wing Panel demonstrator and an I-beam, both made with HiTape® carbon fiber reinforcements. HiTape® dry carbon reinforcements were developed for the automated lay-up of preforms and to complement a new generation of HiFlow™ resin systems, producing high-quality aerospace structures using the resin infusion process. The reinforcements incorporate a toughening veil to enhance mechanical properties and meet the structural requirements for aerospace parts. The I-Beam was manufactured using C-RTM (Compression Resin Transfer Molding) and was injected with Hexcel’s RTM6 resin in a process taking less than five minutes.

Hexcel honeycomb saves weight and enhances stiffness in composite structures, and the company provides a range of engineered core solutions that enable highly contoured parts with precision profiling to be produced to exact customer specifications. A sample part made from aluminum FlexCore® that is CNC machined on both sides and formed and stabilized with both peel ply and flyaway layers of stabilization will be on display.

Another honeycomb innovation is Hexcel’s Acousti-Cap® broadband noise-reducing honeycomb that significantly improves acoustic absorption in aircraft engine nacelles. The acoustic treatment may be positioned at a consistent depth and resistance within the core or can be placed in a pattern of varying depths and/or resistances (Multi-Degrees of Freedom and 3 Degrees Of Freedom), offering an acoustic liner that is precisely tuned to the engine operating conditions. These technologies have been tested at NASA on a full engine test rig and meet all 16 design conditions without trade-offs.
Another Hexcel technology to benefit aircraft engines is HexShield™ honeycomb which provides high-temperature resistance in nacelles. By inserting a thermally resistant material into honeycomb cells, Hexcel provides a core product with unique heat-shielding capabilities that allows for the potential reuse of material after a fire.

With 50 years of experience behind its comprehensive range of high-strength, high-strain PAN-based carbon fibers, Hexcel continues to innovate and is introducing two new fibers to its portfolio. HexTow® HM50 combines high modulus and high tensile strength, making it ideal for commercial and defense aircraft and engines. HexTow® 85 was developed specifically to replace rayon-based carbon fiber for ablative applications.

Another area of expertise that uses HexTow® carbon fiber is additive manufacturing, where Hexcel uses PEKK ultrahigh performance polymers and HexAM™ technology to manufacture carbon reinforced 3D printed parts. This innovative process provides a weight-saving solution for intricate parts in highly demanding aerospace, satellite and defense applications. HexPEKK™ structures offer significant weight, cost and time-to-market reductions, replacing traditional cast or machined metallic parts with a new technology.

Later this year Hexcel will open a joint research and development laboratory in Les Avenières (Isère), France with Arkema to develop carbon fiber-reinforced thermoplastic prepreg tapes for aerospace, space and defense applications. A spool of thermoplastic prepreg tape will be on display on Hexcel’s stand to showcase this cost-effective technology that enables lightweight parts to be produced in faster production cycles for future generations of aircraft.

Hexcel’s stand is located next to Hexcel’s official distributor for aerospace products, Groupe Gazechim Composites. In 2018, Hexcel and Gazechim formed a joint venture, HexCut Services, to provide aerospace and defense customers with customized kitting services that include Hexcel’s innovative carbon fiber prepreg, fabrics and adhesives. Pre-cut kits save customers time and investment, reduce inventory and minimize material losses through scrap reduction.

Hexcel and Arkema have announced that they will open a joint research and development laboratory in Les Avenières (Isère), France in April.

This follows the companies’ previous announcement in March 2018 that they were forming a strategic alliance to develop thermoplastic composite solutions for the aerospace sector, combining the expertise of Hexcel in carbon fiber and Arkema in PEKK.

The companies’ objective at this new lab is to develop carbon fiber-reinforced thermoplastic prepreg tapes to enable lightweight parts to be produced for future generations of aircraft. These solutions will provide lightweight and cost effective technologies including faster production cycles for customers in the aerospace and the space and defense sectors.

Thanks to Hexcel and Arkema’s close collaboration, an initial industrial pilot line will be installed in the new lab in the coming weeks. The companies expect to start supplying carbon/thermoplastic UD tapes from this pilot line to customers for evaluation beginning in Q3 2019.

CHOMARAT, the composite reinforcement specialist, has developed a new unidirectional woven tape for its C-TAPETM line of products. Designed to meet the standards of industrial production, the new C-TAPE™ is reinforcing the foils of the “Figaro Beneteau 3”. These appendages improve the monohull’s stability and performance.

“For the series production of the foils, the Beneteau Group chose MULTIPLAST, the well-known builder of racing boats, which engaged the CHOMARAT Group to provide project support and achieve the best cost/performance balance,” explains Vincent CHOLVY, CHOMARAT’s Manager for the boating market.

C-TAPE™, a high-performance carbon reinforcement with great design flexibility
C-TAPETM offers a lot of flexibility in terms of weight, width and construction. It has been optimized to facilitate series production, yet provide the foils with maximum performance.
The weft yarn developed by CHOMARAT makes the tape easy to handle and to work with. It is produced in 50-cm widths in order to adapt better to the mould, thus reducing both scrap and production cost.

“The project was an ambitious one,” says MULTIPLAST General Manager Yann PENFORNIS. “We had to reach a lower target cost, achieve a perfect foil shape, guarantee identical weight for all parts, and produce a set of foils per week over a period of one year.”

A reinforcement that facilitates flow in multi-ply carbon structures
Fifty plies of tape are used to make the foil so that it can resist high levels of stress and achieve optimal performance.
The specific structure of C-TAPETM facilitates resin flow throughout the thickness. The reinforcement provides the desired mechanical performance and also cuts down on production time.
The result is an ultra-innovative foil, both for its geometry and for the fabrication process (infu-jection) used.

“This new C-TAPE™ is the fruit of close co-operation between the MULTIPLAST and CHOMARAT development teams, and it rounds out our broad range of tapes. We are working on different fibres and adapting the widths to our customers’ processes in order to reduce costs,” concludes Vincent CHOLVY.

By the end of summer 2018, some one hundred foils will have been produced for assembly on the first 50 “Figaro Beneteau 3” monohulls.