From the Sector

STAMFORD – German ultralight aircraft specialist Flight Design has chosen Hexcel as its key supplier adopting low-temperature curing prepreg into its aircraft production. Hexcel’s HexPly® M79 Carbon Fiber prepregs deliver a more consistent final product by ensuring constant material quality and processing parameters and produce a lighter and stronger aircraft at a more competitive overall cost.

Flight Design has always relied heavily on composites for its aircrafts’ ultralight construction and turned to long-term composite materials partner Lange + Ritter, part of Hexcel’s European distribution network, when they began searching for a prepreg material solution. Hexcel and Lange + Ritter created several new product codes specifically for Flight Design and then supplied materials for initial handling trials and prototyping. Hexcel’s HexPly M79 low temperature curing out of autoclave solution was first used in the new F2 prototype. As part of its material supply package, Lange + Ritter also sent a team for on-site training and technical support, allowing the Flight Design production team to get up to speed with prepreg as quickly as possible.

HexPly M79 prepregs can be cured at temperatures as low as 70˚C for eight hours or 80˚C for four hours, reducing tooling costs and increasing build rates. When combined with Hexcel’s innovative air venting Grid Technology, HexPly M79 UD carbon tapes can also be laminated with reduced debulking steps to produce void contents <1% irrespective of laminate thickness. With consistently low void contents and improved mechanical properties, designers and engineers are able to further optimize highly loaded composite aerostructures.

As more and more of its composite aircraft parts are transferred to prepreg technology, Flight Design is seeing the benefits of its switch to HexPly M79. Lay-up is cleaner and more precise, low temperature oven curing is quick and energy efficient, and the manufacturing process consistently outputs exceptionally high-quality laminates and components. The long-term strategy is to integrate HexPly M79 across the range, with Hexcel materials lightening the ultralight aircraft at Flight Design even further.

“The materials and technology package from Hexcel and Lange + Ritter has been a big success for us at Flight Design,” comments Daniel Gunther, Managing Director at Flight Design. “When we took the decision to switch to prepreg, we looked at many options but only Hexcel and Lange + Ritter could offer us low temperature out-of-autoclave (OOA) curing, globally respected material quality and the customer service levels we were searching for.”

Diverging development in the two business units impact fiscal year 2019 of SGL Carbon – Group guidance for 2020 confirmed

• Consolidated sales revenues in fiscal year 2019 up by 4 percent to around 1.1 billion euros
• Consolidated recurring EBIT down by 25 percent to 48 million euros; record results of graphite specialities business did not fully compensate for the weak development in the carbon fiber business
• Composites – Fibers & Materials (CFM): Cyclical und structural weaknesses impact the result of the market segments Wind Energy, Textile Fibers and Industrial Applications, which have limited strategic significance in the medium term
• Graphite Materials & Systems (GMS): Sales and earnings on record level due to strong growth in the market segments Semiconductors and Automotive
• Non-cash impairment charge of around 75 million euros was recorded at CFM in the third quarter of 2019
• Free cash flow significantly improved
• Issue of a new corporate bond and early redemption of the 2015/2020 convertible bond has significantly improved the maturity profile
• SGL Carbon confirms guidance for fiscal year 2020: sales expected slightly below previous year; recurring EBIT approximately 10 to 15 percent below previous year level
• Dr. Michael Majerus, Spokesman of the Board of Management of SGL Carbon: “The financial development of the fiscal year 2019 conceals the fact that our strategic orientation is correct. This is evident from our growth and the increasing number of contracts and projects we acquired in our strategic core markets. Main drivers are the topics of sustainable mobility and energy as well as digitization. Therefore, we expect that we can grow our consolidated revenue by a mid to high single-digit percentage per year on average between 2020 and 2024.“

The fiscal year 2019 developed very differently in the two business units of SGL Carbon. The record results in the graphite specialities business could not fully compensate for the weak development in the market segments Wind Energy, Textile Fibers and Industrial Applications in the carbon fiber business. Group sales grew by 4 percent to 1.1 billion euros. Recurring Group EBIT declined by 25 percent to 48 million euros. Due to the ongoing weakness in the market segments Textile Fibers and Industrial Applications the business unit CFM recorded a non-cash impairment loss of 75 million euros in the third quarter of 2019. With minus 90 (prior year: plus 41) million euros, consolidated Group result declined significantly compared to last year’s good results. The Group confirms its guidance for 2020 published in October 2019.

Group sales are expected to decline slightly compared to the prior-year level, whereas Group recurring EBIT is expected to reach a result around 10 to 15 percent below the prior-year level. Consolidated net result of the Group in 2020 should strongly improve compared to prior-year level to a low double-digit loss.

Sicomin continues to assert itself as the leading formulator and supplier of high-performance, bio-based epoxy resin systems with the launch of new bioresins at JEC World 2020, Hall 6, Booth 43. The group will unveil a variety of products that are each available in industrial quantities for series production within Automotive, Wind Energy and Civil Engineering.

Bio Fire Retardant Epoxy Gelcoat for Wind Energy and Infrastructure
Sicomin will showcase SGi 128, an innovative intumescent epoxy gelcoat developed specifically for fire retardant coating applications for critical components found in the Wind Energy and Civil Engineering markets.
SGi 128 Gelcoat is produced with 38% of its carbon content derived from non-oil sources and is a halogen free gelcoat that provides outstanding fire protection for epoxy laminates and extremely low smoke toxicity. Available with both fast and slow hardeners, this easy to apply epoxy system forms a much tougher and waterproof part surface than traditional intumescent coatings. Sicomin’s SGi 128 is available in industrial volumes with short lead times and has been successfully tested to EN 13501 (EUROCLASS B-S1-d0) and ASTM E84 (Class A).

NEW Bio Resin for HP-RTM processing for Automotive
Sicomin’s new bio-resin specifically formulated for HP-RTM processing, SR GreenPoxy® 28, is the sixth product in Sicomin’s renowned GreenPoxy® range. SR GreenPoxy® 28 is a fast cycle, low toxicity, third generation bio-based formulation aimed specifically at the HP-RTM moulding processes used for both high performance Automotive structural parts and aesthetic carbon fibre components. The new formulation has been optimized for fast production cycle times and superior mechanical performance and is a more sustainable alternative to traditional resins providing exceptional performance and quality for high volume programmes.

GreenPoxy® InfuGreen 810 on display with the GREENBOATS Flax 27 Daysailer on the JEC Planets
With very low viscosity at room temperature, InfuGreen 810 has been formulated to support manufacturers seeking bio-based alternatives for producing parts using injection or infusion techniques. Produced with 38% plant-based carbon content, InfuGreen 810 holds the DNV GL certification, providing extra assurance of the product’s quality, efficiency and safety standards. This high-performance epoxy infusion system is demonstrated at JEC World through the display of the GREENBOATS Flax 27 daysailer on the JEC Planets.

Hexcel is collaborating with NaCa Systems, a Tier 1 supplier of natural fiber composite automotive interior parts, on the development of a lightweight carbon fiber prepreg and wood fiber composite sportscar seat back using a rapid press molding process. This innovation validates a short cycle time production process for CFRP and wood fiber composite parts and offers a host of benefits to automotive manufacturers.

Hexcel supplies NaCa Systems with an optimized version of its HexPly® M77CS epoxy prepreg material. HexPly® M77CS is a fast curing hotmelt, thermosetting epoxy matrix, specifically designed for prepreg applications for which short cure cycles and clear surfaces with perfect aesthetics are required.

The lightweight seat back demonstrates a 40% weight saving compared to a typical injection molded plastic component whilst also featuring a significantly improved CO2 footprint vs a full carbon part. The prepreg and wood fiber structure doesn’t produce sharp edged pieces when damaged. In addition, wood fiber composites also increase sound absorption, contributing to improved NVH damping within the vehicle interior.

The NaCa Systems seat back will be on display on the Hexcel stand at JEC World 2020.

SGL Carbon and Solvay collaborate to develop highly-competitive advanced carbon fiber composites for aerospace primary structures

SGL Carbon and Solvay have entered into a joint development agreement (JDA) to bring to market the first composite materials based on large-tow intermediate modulus (IM) carbon fiber. These materials, which address the need to reduce costs and CO2 emissions, and improve the production process and fuel efficiency of next-generation commercial aircraft, will be based on SGL Carbon’s large-tow IM carbon fiber and Solvay’s primary structure resin systems.

The agreement encompasses both thermoset and thermoplastic composite technologies. It builds on Solvay’s leadership in supplying advanced materials to the aerospace industry and SGL Carbon’s expertise in high-volume carbon fiber manufacturing.

“For Solvay, this is an opportunity to lead the aerospace adoption of a composite material based on 50K IM carbon fiber. This is a highly competitive value proposition that brings more affordable high-performance solutions to our customers. We see this as the first step in a long-term partnership,” said Augusto Di Donfrancesco, member of Solvay’s executive committee.

“By combining SGL’s carbon fiber expertise in our newly developed, unique 50K IM fiber with Solvay’s resin formulation and aerospace market expertise, both partners are aiming to develop an advanced aerospace material system. This alliance supports our strategic direction and accelerates our growth in the attractive aerospace market,” said Dr. Michael Majerus, spokesman of the management board of SGL Carbon.

Composite materials for aerospace applications represent a multi-billion-dollar market that is expected to grow strongly in the coming decade. Solvay and SGL Carbon are uniquely positioned to develop solutions to address the needs of this market.

STAMFORD, Conn. – At this year’s CAMX conference, taking place on September 24-26 in Anaheim, CA (Booth L42), Hexcel will promote its broad portfolio of composite innovations for aerospace and industrial applications.

On display at the Hexcel booth, visitors will see an integrated wing panel demonstrator made with HiMax™ non-crimp reinforcements that were specially developed to complement a new generation of infusion resin systems. Visitors will also see a wing box demonstrator made from HiTape® dry carbon reinforcements. Both parts were injected with Hexcel’s RTM6 infusion resin and incorporate a toughening veil to enhance mechanical properties to meet the structural requirements for aerospace parts.

With 50 years of experience and the most qualified carbon fiber positions on aerospace programs in the industry with its comprehensive range of high-strength, high-strain PAN-based carbon fibers, Hexcel continues to innovate and is introducing a new fiber to its portfolio. HexTow® HM54 combines high modulus and high tensile strength, which allows structural designers to achieve higher safety margins for both stiffness and strength-critical applications. HexTow® carbon fibers are excellent not only for aerospace applications but also industrial and recreational applications. HexTow® carbon fibers are excellent not only for aerospace applications but also industrial and recreational applications, examples of golfing applications will be on display.

Additive manufacturing is on the forefront of innovation for composite technologies, and Hexcel is leading the way with its HexAM® additive manufacturing process. HexAM® additive manufacturing combines high performance PEKK thermoplastics with carbon fiber to produce flight-ready 3D printed HexPEKK® parts. HexPEKK® structures offer significant weight, cost and time-to-market reductions, replacing traditional cast or machined metallic parts in highly demanding aerospace, satellite and defense applications.

HexPly® M77 snap-cure prepregs are yet another example of Hexcel technology leading the way. HexPly® M77HF, the latest member of this quick-curing prepreg family, is revolutionizing the world of composites for high-performance sporting goods with its faster production times and excellent surface quality. It will be featured in the Hexcel booth in two products – a carbon fiber Goode water ski which is setting records in the competitive world with its precision and durability, and in a HED cycling wheel noted for its aerodynamics and light weight.

Among Hexcel’s latest technologies are the RF Interference Control materials made by ARC Technologies, a Hexcel company. A selection of these industry-leading custom RF / EMI and microwave absorbing composite materials for military, aerospace and industrial applications will be on display at the Hexcel booth.

HexForce® bias weave woven reinforcements are a patented solution to optimize material usage. These bias weave reinforcements are continuous rolls of carbon fiber fabric in which the warp and weft yarns are oriented on the bias at +/- 45° which can reduce prepreg waste up to 60%. Visitors at CAMX will be able to see this new woven reinforcement and learn more.

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.

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.

• Hexcel’s Composite Innovations For Aerospace, Automotive, Energy And Marine Applications At JEC World 2019 Hall 5 - Stand J41

STAMFORD, Conn. – At this year’s JEC World taking place in Paris on March 12-14, Hexcel will promote a wide range of composite innovations for customer applications in aerospace, automotive, energy and marine markets.

Aerospace Innovations

Hexcel’s HiTape® and HiMax™ dry carbon reinforcements were developed to complement a new generation of HiFlow™ resin systems, producing high quality aerospace structures using the resin infusion process. HiTape® was developed for the automated lay-up of preforms and HiMax™ is a range of optimized non-crimp fabrics (NCF). Both products incorporate a toughening veil to enhance mechanical properties, meeting the structural requirements for aerospace parts.

Visitors to JEC will see an Integrated Wing Panel demonstrator and an I-beam, both made with HiTape® reinforcements, and an Opticoms rib made with HiMax™ NCF. The Opticoms rib and I Beam were both manufactured using C-RTM (Compression Resin Transfer Molding). They were injected with Hexcel’s RTM6 resin in a process taking less than 5 minutes. The total manufacturing cycle for both parts was just 4.5 hours.

Also among the Aerospace exhibits, Hexcel will display a composite petal for a satellite antenna, manufactured by Thales Alenia Space Italia. The petal is part of a set of 24 deployable structural elements that form the large area reflector assembly used on board Low Earth Orbit (LEO) observation satellites. Thales Alenia Space Italia selected Hexcel’s HexPly® M18 prepreg for this application, acknowledging the superior mechanical and outgassing properties provided.

Another Hexcel prepreg application on show is a “zero” frame, manufactured by Aerofonctions for the engine area of Daher’s TBM 910/930 single-engine turboprop aircraft. Hexcel’s HexPly® M56 prepreg was selected by Daher for the “zero” frame – a product developed for Out of Autoclave applications that provides the same high quality and performance as autoclave-cured prepregs, from a simple vacuum bag cure in an oven.

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.

HexTow® carbon fiber holds the most qualified carbon fiber positions on aerospace programs in the industry and is the best unsized fiber available on the market. It provides excellent bonding interfacial properties with thermoplastic matrices and is the best-performing fiber for 3D printing applications.

Additive manufacturing is another area of expertise for Hexcel, using PEKK ultra-high 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.

Hexcel is well known for its range of weight-saving, stiffness-enhancing honeycombs and the company adds value by providing a range of engineered core solutions to customers from facilities in the USA, Belgium and the newly opened Casablanca plant in Morocco. Hexcel’s engineered core capabilities enable highly contoured parts with precision profiling to be produced to exacting customer specifications. An example of such a part will be on display at JEC. Made from Aluminum FlexCore®, the part is CNC machined on both sides, and formed and stabilized with both peel ply and flyaway layers of stabilization. Aircraft engines benefit from a number of Hexcel core technologies including HexShield™ honeycomb that provides high temperature resistance in aircraft engine 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 re-use of material after a fire event.

Hexcel’s Acousti-Cap® broadband noise-reducing honeycomb 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.

HexBond™ – the new name in Adhesives

Hexcel’s range of high performance adhesives has expanded considerably following the company’s acquisition of Structil. The company has now decided to unite the range by marketing all of its adhesive products using HexBond™ branding. The comprehensive range of HexBond™ structural film adhesives, foaming adhesive films, paste adhesives, liquid shims, epoxy fillets and Chromium free liquid primers is suitable for a wide range of applications in combination with Hexcel’s prepreg and honeycomb products.

Automotive Innovations

Hexcel’s carbon prepreg patch technology provides an innovative way of locally stiffening and reinforcing metal parts, providing noise and vibration management functionality. HexPly® prepreg patches consist of unidirectional carbon fiber impregnated with a fast curing epoxy matrix that has self-adhesive properties, enabling it to bond to metal in a highly efficient one-step process. These key technology properties are demonstrated in an 18.5kg aluminum subframe (that is 50% lighter than steel equivalents), which was reinforced with 500 grams of HexPly® prepreg and tested by Saint Jean Industries. The part demonstrates a significant reduction in noise, vibration and harshness (NVH). Other benefits include lower production costs, energy savings, increased driver comfort, production flexibility and part count reduction. With this technology Hexcel is a finalist in the JEC Innovation Awards 2019 in the Automotive Applications category.

HexPly® prepreg patch technology was also applied to a hybrid side sill demonstrator developed with Volkswagen and Dresden University to address future crash test requirements, specifically for electric cars. Combining fiber-reinforced plastic (FRP) with metal, the hybrid construction allows for optimum performance including weight savings, enhanced safety, increased energy absorption, battery protection in a crash situation and production flexibility.

Hexcel will also display a lightweight CFRP transmission crossmember produced from Hexcel’s high performance HexMC®-i 2000 molding compound. The transmission crossmember was developed in partnership with the Institute of Polymer Product Engineering (at Linz University), Engel and Alpex. As the part connects the chassis together and supports transmission it has to be stiff and strong, resisting fatigue and corrosion. Hexcel’s HexMC®-i 2000 was selected as the best-performing molding compound on the market, curing in as little as two minutes to produce lightweight, strong and stiff parts.
To produce the transmission crossmember HexMC®-i 2000 preforms are laid up in Alpex molds and compression-molded in a v-duo press that was tailored for the application by Engel. Ribs, aluminum inserts and other functions can be molded into the part using the single-stage process, reducing component-count. Any offcuts from the preforms can be interleaved between the plies of material to provide additional reinforcement in key areas - meaning that the process generates no waste.

Other Automotive promotions on Hexcel’s stand at JEC World include a composite leaf spring manufactured by ZF using HexPly® M901 prepreg. In contrast to steel leaf springs, composite versions offer many advantages including weight savings of up to 70%, high corrosion resistance, optimized system integration and superior performance. HexPly® M901 prepreg reduces the cure cycle to below 15 minutes and provides 15% higher mechanical performance, with enhanced fatigue properties. It also operates at high temperatures, providing a Tg of up to 200°C following a post cure.

Marine Innovations

Hexcel has a comprehensive range of products aimed at racing yacht and luxury boat builders that include America’s Cup, IMOCA class and DNV GL-approved prepregs, woven reinforcements and multiaxial fabrics for hull and deck structures, masts and appendages.

At JEC World Hexcel will display an IMOCA yacht mast manufactured by Lorima using HexPly® high modulus and high strength carbon fiber prepreg from Hexcel Vert-Le-Petit. Lorima is the exclusive official supplier of masts for IMOCA 60 class racing boats.

Hexcel’s HexTow® IM8 carbon fiber has been selected as the highest performing industrial carbon fiber on the market and will be used by spar and rigging manufacturer Future Fibres to manufacture their AEROrazr solid carbon rigging for all the teams in the 36th America’s Cup.

Hexcel’s HiMax™ DPA (Dot Pattern Adhesive) reinforcements are non-crimp fabrics supplied pre-tacked, allowing multiple fabrics to be laid-up more easily in preparation for resin infusion. Providing an optimal, consistent level of adhesion, they allow a faster and more consistent resin flow, as well as eliminating the use of spray adhesive for a healthier working environment and lower risk of contamination. Simply unrolled and applied to the mold or core layer before the introduction of resin, HiMax™ DPA fabrics are widely used in boat building, where lay-up times can be reduced by up to 50%.

Wind Energy Innovations

Hexcel has developed a range of HexPly® surface finishing prepregs and semi-pregs for wind turbine blades and marine applications. Providing a tough, durable and ready-to-paint surface without using in-mold coats, these products shorten the manufacturing cycle and reduce material costs. HexPly® XF2(P) prepreg is optimized for wind blades and has a ready-to-paint surface, straight from the mold, saving at least 2 hours of takt time.

Polyspeed® pultruded carbon laminates were developed for load-carrying elements in a blade structure and are manufactured with a polyurethane matrix that provides outstanding mechanical performance in terms of stiffness and durability. The blade manufacturing process is optimized, with increased throughput. The pultruded laminates are supplied in coils as continuous cross section profiles.
HiMax™ non-crimp fabrics using E-glass, high modulus glass and carbon fibers are also available in a wide range of unidirectional, biaxial and triaxial constructions. HiMax™ fabrics have applications throughout the turbine, from the stitched carbon fiber UDs used in the main structural elements, to glass fabrics and hybrids for blade shells and nacelles. There are also specialist applications such as lightweight fabrics for heated leading edge de-icing zones.

Michelman, a global developer and manufacturer of environmentally friendly advanced materials, including sizing for glass and carbon fiber, has invested in the FIMATEST adhesion measurement system to ensure their sizing solutions continue to contribute to enhanced performance of composite parts.

“As we continue our vision to be the interface expert, it is critical to have analytical equipment that can efficiently fine-tune our sizing to optimize adhesion properties. This is one of the key performance attributes we provide our customers, and the fact that the Textechno FIMATEST system works according to the fiber pull-out principle makes it extremely valuable”, explains Steve Bassetti, Michelman’s Global Marketing Director for Industrial Manufacturing. “We have utilized this equipment in our development lab for almost two years, and it is suited for any fiber-matrix combination we have developed. It has been helpful that Textechno developed these instruments because they are, and will continue to be, a great benefit to the entire Composites industry. We look forward to supporting Textechno in establishing more standardization for the Industry regarding fiber-matrix-adhesion and processing properties.“

Dr. Ulrich Mörschel, CEO of Textechno, added: “We are proud that Michelman, the industry’s leading interface expert, invested in our testing system.” Bassetti further elaborated on the system’s benefits: “For Michelman’s customers, this equipment has allowed for great collaboration, increased screening of sizing concepts, and a more robust and efficient product development process.”