NetComposites
Advanced Engineering 2018

Clariant’s Exolit Ensures Protection for Renewable Polymers in Oyster Shell-Reinforced Polypropylene

28 January 2014

Clariantis is providing fire protection in the development of commercially viable, flame retarded thermoplastic composites based on renewable oyster shell fillers.

Research led by the Unité Matériaux et Transformations (UMET) at the University of Lille in France has shown that it is possible to achieve effective flame retardancy for oyster-shell-reinforced polypropylene (PP) composites using Clariant’s Exolit AP non-halogenated flame retardants. Results indicated a significant increase in the thermal stability of the PP compound with phosphate-based Exolit AP760 added to the high performance compound.

Eurostar Engineering Plastics, developer of the ‘green’ PP compound, is at the forefront of the development and commercialisation of halogen-free flame retardant compounds. The company has chosen oyster shells as a unique source of mineral filler that avoids the environmental disadvantages and high energy consumption of standard mining processes, and contributes to landfill reduction through recycling. The company says Exolit AP adds to the improved environmental profile of the composite; it does not show toxic effects, and does not accumulate in the environment, since it is  degradable by breaking down to naturally occurring phosphate. The flame retardant can also be added at low dosage with a low impact on mechanical properties.

“The project results herald a breakthrough in the feasibility of using bio-based materials in high-end application areas, such as the automotive and building and construction industries, where effective flame retardancy is required,” comments Professor Sophie Duquesne, who is leading the research group from Unité Matériaux et Transformations (UMET). “In addition to oyster shells we are also actively researching the viability of achieving flame retardancy when vegetal fillers such as flax are used, to further extend possibilities for more environmentally-friendly materials in demanding environments.”






Related / You might like...

Cobra Publishes Surfboard Case Study from 40 Years Book

Cobra International is celebrating its 40th year and has commissioned a book that will look at 40 key projects and 40 key people that were integral to the company’s growth. ‘Klaus Simmer and The King Cobra: A breakthrough in surfboard design and production technology’ is an extract article from this book and a breakthrough composites product for Cobra, establishing its presence as a manufacturer of high performance windsurf boards and creating global visibility for the Cobra brand.

ZSK's Technology Showcase Demonstrates TFP Applications

ZSK will hold its bi-annual technology showcase on 21-22 September 2018 at its Krefeld, Germany, headquarters. The Embroidery Technology Show assembles more than 25 exhibitors from around the world to discuss emerging trends in the embroidery manufacturing industry and demonstrate the latest products produced using techniques such as tailored fibre placement (TFP) or smart textiles.

SGL Carbon Celebrates Opening of Fibre Placement Centre

SGL Carbon and Fraunhofer IGCV have officially opened the Fibre Placement Centre (FPC) at SGL's site in Meitingen, Germany. Compositence, BA Composites and the Chair for Carbon Composites at the Technical University of Munich have also joined the alliance, and Coriolis Group and Cevotec are planning to come on board as partners.