From the Sector

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.

Monforts Textilmaschinen GmbH & Co. KG will be providing information on its extensive range of coating and finishing technologies for the production of nonwovens and technical textiles at the forthcoming Techtextil India exhibition.

“India is already a very important market for Monforts and there are exciting prospects ahead for Indian manufacturers of technical textiles, who are well positioned to capitalise on growth opportunities,” says Monforts Head of Denim Hans Wroblowski, who will be at the Monforts stand in Hall 4, booth C52 at the show. “India has one of the largest working-age populations in the world and a complete textile value chain for both natural and synthetic fibres.”

In addition, he adds, India’s government, through its Ministry of Textiles, has been actively promoting the growth of technical textiles through various programmes based on investment promotion, subsidies, the creation of infrastructure and the stimulation of consumption.

As a result, India’s Ministry of Textiles is forecasting that the growth of technical textiles in the country will be over 18% annually in the next few years, from a value of US$16.6 billion in 2018 to US$28.7 billion in 2021.

Value addition

High value-added technical products such as wide-width digital printing substrates, carbon fabrics for high-performance composites, filter media, flame retardant barrier fabrics and heavy-duty membranes are now being coated on Monforts texCoat ranges and finished with the company’s industry-leading Montex stenters.

“Since we acquired the technology that our coating units are based on in 2015, we have made a lot of refinements,” says Hans. “All of these developments are reflected in higher coating accuracy and the resulting quality of the treated fabrics. At the same time, our latest multi-functional coating heads offer an unprecedented range of options, with a wide range of modules available.”

The texCoat user interface is now equipped with the unique Monforts visualisation system and the magnetic doctor blade has greater power reserves. Options include a carbon fibre-reinforced composite coating drum with a more scratch-resistant surface and maximum rigidity and remote control which simplifies exact adjustment for the operator.

Montex stenters in special executions are meanwhile ideal for the drying and finishing of both technical woven fabrics and nonwovens and characterised by high stretching devices in both length and width.

“The European-built Montex range of stenters has earned its leading position in the technical textiles market due to the overall robustness, reliability and economy of these machines,” Hans concludes. “Whatever the intended end-product – and we continue to discover potentially new areas in which technical textiles can be utilised all the time – we have the machine specification and know-how to turn ideas into reality. In India we also benefit from the strong sales and service support of A.T.E. Enterprises.”

Texchtextil India takes place alongside World of Composites at the Bombay Exhibition Centre in Mumbai from November 20-22.

Market and technology analysis confirms big potential for tape inserts in the injection molding process. Following the finalization of a major consortial project led by the Aachen Center for Integrative Lightweight Production (AZL) and the Institute for Plastics Processing at RWTH Aachen University (IKV), the result is clear: tape inserts offer enormous potential for injection molding parts. For suitable components, product costs and component properties can be positively influenced.

In cooperation with 20 industrial partners, the two renowned Aachen research institutes AZL and IKV carried out a detailed analysis of tape inserts in injection molded components over a period of eight months. The tapes, which are a few tenths of a millimeter thick, are continuous fibers, typically made of glass or carbon, completely impregnated and embedded in a thermoplastic matrix. The tapes can be precisely aligned to the loads in a component and are used primarily in high-performance applications with the aim of weight reduction. The aim of the conducted analysis was the identification of potential applications and the estimation of a wider range of applications.

The project was divided into several phases: Phase I was used to identify the current status. In 20 interviews with representative companies of the injection molding industry, the researchers gathered why tape inserts have rarely been taken into account so far, when defining the material concepts to be analyzed. The lack of information about the material class, the procedure and tools for the development process and the necessary production technologies were cited as major challenges. This is where the consortium will take action and provide comprehensive information during the “Technology Information Day” on the extensively prepared state of the art and the high degree of maturity of the supply chain. Based on the status quo, they developed a methodology for analyzing the technological and economic potential of tape inserts in injection molding applications.

Both the previous results and the planned follow-up projects are the subject of the “Technology Information Day" at K 2019, to which the companies involved in the study, the AZL and IKV, invite all companies along the value chain, from raw material manufacturers to injection molders to OEMs. (Date: 18th October 2019, 10:00 am to 1:30 pm, Trade Fair Düsseldorf CCD South, Room 002).

The consortium, amongst others consisting of Asahi Kasei Europe GmbH, BASF SE, Borealis AG, BÜFA Thermoplastic Composites GmbH & Co. KG, ENGEL AUSTRIA GmbH, Huesker Synthetic GmbH, LG Hausys R&D Center, Mitsui Chemicals, Nippon Electric Glass, Polyscope Polymers BV, POLYTEC GROUP, Simcon kunststofftechnische Software GmbH, SABIC and Toray International Europe GmbH, is inviting to the “Technology Information Day” at K 2019. The goal is to inform about the technology and to identify topics for future collaboration.

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.

On April 11^th, 2019, the 9 Partner Institutes of the AZL opened the doors of their machinery halls and research labs to provide an extensive and on-site insight into the research and development capaci-ties in the field of lightweight production and composites at the RWTH Aachen Campus. As a special highlight of this year, the AZL presented the "iComposite 4.0" self-optimizing process chain: fiber-spraying - dry fiber placement - adaptive RTM as well as AZL´s new prototype machine development "Ultra-Fast Consolidator Machine" for highly productive and flexible processing of thermoplastic tapes with in-situ consolidation (winner of the JEC World Innovation Award 2019).

More than 100 Participants from external companies as well as from the AZL Network had the possibility to experience updates on the latest lightweight production technologies and equipment, get to know the bene-fital infrastructure on the Campus and network with internationally represented companies of the entire light-weight value chain researches by taking part in five guided tours to the lightweight institutes.

The AZL brought together content in the field of textiles (ITA), plastics and composite materials (IKV), pro-duction technology (WZL, IPT, ILT, and ISF), quality assurance and production-integrated measurement technology (WZL), lightweight design (SLA), automotive production (IKA) as well as multi-material systems and process integration (AZL).

Once a year at the Open Day, the AZL offers an exclusive and widespread unique insight into the R&D capacities of the institutes in the field of lightweight and composite technologies on the campus of RWTH Aachen University. Within walking distance, researchers and students from 9 institutes are working on the latest technologies for the cost-efficient development and production of lightweight components within one of the largest research landscapes in Europe. The research, closely involving industrial companies, covers the entire value chain from fiber production, materials and processing technology to quality assurance and com-ponent testing.

Composite reinforcement specialist Chomarat will exhibit its latest woven and multiaxial carbon fibre reinforcements at JEC World 2019. "Prepregs are used in the most demanding markets, such as aerospace or the automotive industry. Due to their high performance, Chomarat’s carbon fabrics are highly considered by prepreggers. Compared to standard solutions, the multiaxial reinforcements developed by the group offer Chomarat’s converter customers significant productivity gains. With its production sites in France, Asia and the United States, Chomarat is able to supply its customers and guarantee the same high level of quality in all countries," explains Group Managing Director Michel Cognet.

C-WEAVE™ - THE QUALITY AND RELIABILITY BENCHMARK
In just a few years, prepreggers have come to consider Chomarat's C-WEAVE™ carbon-fibre fabrics as a benchmark for surface-finish quality and processability.
The reinforcement contributes to productivity and reliability during the prepregging process. Helen Doughty, Director at SHD Composites, testifies: “The consistent high quality of C-WEAVE™ has been a key part of SHD Composite Materials continued success and growth.”
"Prepreg users often manufacture Class A surface parts for demanding applications, and they need excellence and reproducibility," explains Chomarat’s Prepreg Market Manager Ulrike Salmon.

C-PLY™: GOING FURTHER WITH CARBON MULTIAXIALS
The advantages of multi-axial reinforcements are now well established - oriented axes, absence of resin-rich areas allowing a high fibre content, and improved mechanical tensile and/or bending performance thanks to the non-crimp fibres.
By developing its C-PLY™ range, Chomarat further demonstrates that multiaxials are a real asset in terms of performance and appearance. "Chomarat strives to minimize marking on parts and to optimize surface quality through fibre spreading and the use of suitable stitches. C-PLY™ can also integrate aesthetic functions by using the assembly seam as a graphic design", continues Ulrike Salmon.
These new advantages are important for the automotive, sports-equipment and consumer-electronics markets, which seek to combine premium quality and productivity.

• 8^th edition to be held as the “Fair & Convention for Hightech Textiles” at the Carlowitz Congresscenter Chemnitz for the first time on 9 – 10 June 2020 – Textile themes from the LiMA exhibition for lightweight design are being integrated in the new format

 
The “mtex+” is raising its profile and is moving to an attractive setting. The 8^th edition of the international exhibition entitled “Fair & Convention for Hightech Textiles” will be held in the new Carlowitz Congresscenter at the heart of Chemnitz for the first time on 9 and 10 June 2020.
 
“The “mtex+” is a trade event that experts from various sectors greatly appreciate on account of its emphasis on dialogue and in-depth contacts – and because everything is on the spot. The modern, exciting ambiance at the new venue facilitates our desire to create the best possible atmosphere for cooperation in a trusting environment,” Dr Ralf Schulze, Managing Director of C3 GmbH, the organising company, explains. “In its future form, the “mtex+” will act as a source of ideas and inspiration for developers and manufacturers as well as for users of all kinds of high-tech textiles, specifically including composites, to a greater degree than in the past. Textile composite materials are becoming increasingly important for many processors. That’s the reason why we’re transferring the textile themes of the LiMA lightweight design exhibition, which has been held alongside the “mtex+” in the past, into our new trade fair format. Lightweight textile design in all its facets will be one of the major emphases at the “mtex+”.”    
 
The major topics covered by the 8th “mtex+” will include process development, textile engineering, digitalised value-added chains, services with potential for use across different sectors as well as recycling. The highlights of the programme will include workshops on effective and sustainable production, smart textiles, acoustic textiles, a special exhibition on health and protective textiles as well as an entertaining network evening entitled “Excellent connections”.

The North-Eastern German Textile and Clothing Industry Association (vti) believes that this concept exactly matches the needs of its target audience. “Chemnitz is located at the heart of the Central German industrial and research region, which is developing with great dynamism,” says vti Managing Director, Dr.-Ing. Jenz Otto. “Any firm that presents its products and services here will find itself in a very interesting market. Located not far from the border with the Czech Republic and Poland, the “mtex+” will also act as a dialogue forum for potential cooperation partners across sector and international boundaries, both for these and other Eastern European countries.”
 
The “mtex+” will continue to be held in Central Germany’s industrial city of Chemnitz every two years in future too. 159 exhibitors from seven different countries (in conjunction with the LiMA lightweight design exhibition) attended the 7th edition in the spring of 2018. 22 percent of the approx. 1,000 trade visitors came from abroad.

CHOMARAT, the expert in composites reinforcements, is the partner of BABOLAT with its multiaxial carbon, C-PLY™ Hexagonal. Indeed, the specialist racket sports goods manufacturer is launching the new version of the BABOLAT’s Pure Aero. A combination of ultra-modern design and high performance, this tennis racket for champions has made an appearance on the courts of the Rolex Paris Masters. “We are very proud to be chosen by BABOLAT. Our new carbon reinforcement, added to the heart of the racket, enables better control and makes each shot more precise and stable,” says Pascal JOUBERT DES OUCHES, Sports Equipment Market Director at CHOMARAT.

C-PLYTM HEXAGONAL, THE PERFECT ALLIANCE OF PERFORMANCE & DESIGN
The addition of C-PLY™, CHOMARAT’s multiaxial carbon reinforcement, to the core of the BABOLAT’s Pure Aero has increased the racket’s stability while enhancing its performance. The specificity of the reinforcement lies in its stitching thread. “This unique thread brings out the color of the resin pigments because it has been designed to remain visible after its impregnation. It also contributes to extra reinforcement and an exceptional design!” concludes Pascal JOUBERT DES OUCHES.

Das Institut für Textiltechnik der RWTH Aachen University, kurz ITA, zeigt auf der Composites Europe in Stuttgart vom 06.-08. November Produkte, Bauteile und Maschinen entlang der Faserverbundprozesskette. Das ITA präsentiert sich auf dem Stand des Aachener Zentrums für integrativen Leichtbau (AZL) in Halle 9, Stand E70. Anhand verschiedener Demonstratoren werden ausgewählte innovative Prozesse und Produkte über die einzelnen Schritte hin dargestellt. Die Exponate stammen aus unterschiedlichen Anwendungsfeldern: Von Mobilitätsanwendungen bis hin zur Baubranche. Anbei ein Beispiel aus dem Baubereich:

Durch den Barhocker aus Beton mit hybrider Carbon-Textilbewehrung beweist das ITA, dass Textilbetonelemente eine enorme geometrische Gestaltungsfreiheit ermöglichen und gleichzeitig einfach herstellbar sind. Bislang war die manuelle Positionierung der Textilbewehrung zeitaufwändig und komplex, da zulässige Toleranzen im Millimeterbereich liegen. So trug die Fertigung hauptsächlich zu den hohen Kosten von Textilbeton bei.

Am ITA wurde gemeinsam mit den beiden Industriepartnern Albani Group GmbH & Co. KG und DuraPact 2.0 Kompetenzzentrum Faserbeton GmbH eine neue Hybridbewehrung mit integriertem Ab-standshalter entwickelt. Diese Hybridbewehrung senkt die erforderliche Zeit zur Positionierung der Bewehrung um bis zu 60 Prozent und macht den Werkstoff damit deutlich wettbewerbsfähiger.

Die kostengünstige, hybride Bewehrung enthält einen integrierten Abstandshalter und ermöglicht damit die einfache Positionierung von trockenen und beschichteten Bewehrungen. Durch den integrierten Abstandhalter lassen sich schnell mehrere Bewehrungslagen stapeln, wodurch der gewünschte Bewehrungsgrad einstellbar ist. Die Hybridbewehrung besteht aus einem Carbon- oder Glasfasergitter, das mit einer durchlässigen Matte aus Polyamid gefügt ist und in naher Zukunft bei den Industriepartnern als Rollenware erhältlich ist.

Twelve companies from eight different countries will receive a JEC Innovation Award at JEC Asia 2018. Asia-Pacific is an innovative region that sets the tone for all other regions of the globe. Once again, the JEC Innovation Awards highlight how composites bring solutions considering the new challenges in terms of efficiency, sustainability and life-cycle analysis.

This year, JEC Group awards innovations in the following categories: aerospace (structural and tooling), automotive, commercial vehicles, e-mobility, marine, railway, sports & leisure, infrastructure & civil engineering, industrial equipment, sustainability and additive manufacturing.

The ceremony will take place on Thursday November 15, 2018 at the COEX Center of Seoul (South Korea). Ida DAUSSY (Seo Hye-na), will host the ceremony in front of officials, manufacturers, scientists and composites professionals.

Category: AEROSPACE – STRUCTURAL
Winner: CSIR National Aerospace Laboratories (India)

Most of the composite structures for aircraft are made of carbon-epoxy composites, which can withstand a maximum service temperature of 130°C. As a consequence, carbon-epoxy materials cannot be used in hot zones like engine vicinity areas. The Aeronautical Development Agency (ADA) and CSIR-NAL took up the challenge of developing high temperature resistant composites for use in hot zones of light combat aircraft, which would result in significant weight and cost savings, as well as a considerable reduction in the meantime between failures (MTBF) due to thermal ageing.

The first task was to choose a material system with a service temperature of about ~ 200°C. During the material selection process, it was found that BMI resins are a relatively young class of thermosetting polymers. Hence, a carbon-BMI prepreg was selected due to a number of unique features including excellent physical property retention at elevated temperatures and in wet environments.

It was realized that weight savings and performance can be maximized using co-curing technology. This results in a large reduction of fabrication cycle times, costs and weight. Co-cured structures have fewer fasteners, which results in shorter assembly cycle times and also reduces sealing issues.

A prototype engine bay door assembly was built and tested at 180°C for flight certification. The engine bay door consists of an inner skin and co-cured outer skin assembly with eight transverse stiffeners. The stiffeners were designed with ‘J’ sections. The door size was 1.5 m length, 1 m width and 0.4 m overall depth. The co-cured door was developed using autoclave moulding. Two doors were installed in prototype aircraft and successfully flown.