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Vyncolit Introduces Next Generation Mouldable Carbon Fibre Composites

11 June 2004

Vyncolit are developing Vyntec, a phenolic-based carbon fibre reinforced composite that aims to sets new industry standards for material performance in metal replacement applications.

Vyncolit assert that Vyntec will represent the next step in composite advancement, breaking old boundaries and establishing a new generation of materials that can outperform metals and specialty engineering thermoplastics. It is being developed mainly to provide an “easily mouldable, cost efficient, lightweight material for demanding applications in aggressive environments”.

Through the use of lightweight carbon fibres, Vyntec exhibits low density, between 1.35-1.55 g/cm3, giving it a high stiffness/density ratio. Moreover, optimum impregnation of carbon fibres endows the material with high thermo-mechanical properties and chemical resistance, even at elevated temperatures, according to Vyncolit.

Underpinning its performance profile are Vyntec’s tribological properties, which provide a high level of resistance to wear, together with a low coefficient of friction at high temperatures. Vyncolit said that this gives the material an excellent fit in applications where one or more interconnected parts are in motion, and particular value in applications where the lubrication of moving parts is either precluded or undesirable. This characteristic opens the way for Vyntec to fulfil the operating criteria of applications such as rotors and propellers in vacuum and fluid pumps, various types of bearings, as well as seals in brake and engine systems.

According to Mr. Wim Lossy, Vyncoloit’s European Marketing Manager: “Vyntec is an exciting and important composite development that brings improved cost control to applications previously dominated by more expensive materials. Key is that unlike some alternative materials (such as PEI and PEEK) Vyntec can deliver cost savings without any reduction in performance. In fact, tests show that Vyntec performance can not only match that of high cost materials but in many instances is superior to them.”

To ascertain performance benchmarks for Vyntec composite, a complete array of tests were carried out. To obtain comparative data, these tests were simultaneously conducted on carbon fibre reinforced grades of polyetheretherketone (PEEK), generally considered one of the highest performing engineering thermoplastic polymers. In each of the tests, which included exposure to high temperatures and aging in automotive fuel and oil and Block on Ring (BOR) tribological testing, mechanical and wear performances were measured and results showed Vyntec performance paralleled or significantly exceed that of PEEK thermoplastic.

“At a time when the physical demands on materials and cost pressures are increasing in tandem, we believe that Vyntec can enable manufacturers to balance these often contradictory demands in a positive way and without any compromises,” says Wim Lossy. “Importantly, although Vyntec is ideally positioned as a replacement material, its performance profile also puts it in the front rank of choice for future applications, which will probably be more demanding in all respects.”

Vyntec carbon fibre composite is currently being trialled in a number of applications and will be launched commercially at the K 2004 event in Dusseldorf (20-27 October).





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