EMS-GRILTECH at the JEC Europe in Paris March 10-12, 2015 – pavilion 7.3, booth A20

EMS-GRILTECH presents the latest developments and products for composite applications at the JEC in Paris.

18.11.2014

Improved handling of thermosets with Griltex CE

When injection-moulding components reach their limits, thermosetting composites are the materials of choice. One well-known problematic in the manufacture of thermosetting composite components is the shifting of fibres inside the component mould or during manufacture of the preform. If the fibres do not lie at exactly the intended position, an immediate loss of stability is caused. Binding agents are used to prevent this. Under the trade Griltex CE, EMS-GRILTECH supplies specifically developed polymers which make handling much easier. Developed for an epoxy matrix, this product can also be used with other thermoset materials such as two-component polyurethane, phenol or cyanic ester resins. Griltex CE stabilises fibre structures or tapes and prevents shifting of the fibres in resin transfer moulding (RTM) processes. The product does not need a curing time and it is possible that several fibre layers can be bonded onto each other and processed in only one step.

Griltex CE - Two in one

But Griltex CE is more than just a binding agent; at the same time it is a toughening agent which strikingly improves mechanical properties of the composite component. Griltex CE exhibits maximum compatibility with epoxy resins, thus creating a strong bond. The residual fracture strength values in compression after impact tests (CAI) increase by up to 65% and the fracture surface is significantly smaller. Shear strength measured in interlaminate shear strength tests also increases by 33%.This means that Griltex CE offers a double advantage: It makes manufacture of thermoset composite components more simple and, at the same time, significantly increases their mechanical properties.

Attractive alternative – Griltex CT

EMS-GRILTECH even goes a step further. With Griltex CT, it offers high-performance thermoplastic materials which can replace the cost and time intensive thermoset systems. Composite fibre-reinforced sheets can be pre-manufactured using Griltex CT and fibre material. During a further processing step, these sheets are heated for a short time and can then be shaped into any required form. As composite parts made using this process require no curing, and thus allow very short cycle times for manufacture of composite components, they are extremely interesting for bulk serial production.

Grilon fibers and yarns for composites

Thermoplastic Grilon fibers and yarns are used in composites as matrix, toughening and binding elements. For the solidification of woven, uni- or multidirectional and knitted fabrics for the RTM process EMS-GRILTECH has developed specialty Grilon yarns and fibers. Our products simplify the handling of the uncoated substrates and no auxiliaries are necessary to manufacture preforms. Grilon fibers and yarns are not only a bonding but also a toughening material for epoxy-resin composites. Test results for energy release rate and compression strength after impact show the improvement compared to epoxy-binder systems and the inter-laminar shear strength remains on a high level even at elevated temperatures.

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Visit us in pavilion 7.3 at our booth A20.

JEC Europe Composites Show & ConferenceParis Expo, Place de la Porte de Versailles, 75015 Paris