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US Offices Tel : +1 781 261 9778 Fax : +1 781 261 9769 info@us-nanocyl

US Offices Tel : +1 781 261 9778 Fax : +1 781 261 9769 info@us-nanocyl.com. Nanocyl Headquaters Belgium Tel : +32 71 750 380 Fax : +32 71 750 390 info@nanocyl.com.

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US Offices Tel : +1 781 261 9778 Fax : +1 781 261 9769 info@us-nanocyl

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  1. US Offices Tel : +1 781 261 9778 Fax : +1 781 261 9769 info@us-nanocyl.com Nanocyl Headquaters Belgium Tel : +32 71 750 380 Fax : +32 71 750 390 info@nanocyl.com CEFIC stakeholder dialogue on NanomaterialsThe use of carbon nanotubes (CNTs) can improve the eco-efficiency of materialsNanocyl , BelgiumJune 24, 2008

  2. Short presentation of Nanocyl • Medium size Belgian company, spin-off of two universities: Namur and Liège • One of the leading producer of carbon nanotubes and of master batches in Europe • Production and research facilities in Sambreville (Belgium) • Cooperation with various research centres in Europe • Proactive participation in toxicological studies

  3. Interest of CNTs as filler in plastic materials • Carbon nanotubes: a family of nanomaterials made up entirely of carbon. • Structurally, multi-walled carbon nanotubes (MWCNTs) consist of multiple layers of graphite superimposed and rolled in on themselves to form a tubular shape. • MWCNTs are characterised by • very high mechanical strength: 5 times lighter than steel and 20 to 100 times stronger depending on the occurrence of defects in the structure, • very good electrical conductivity, as conductive as copper • very good thermal conductivity: same as that of diamond and more than twice that of copper. • They can be easily dispersed in plastic materials

  4. Conductive compounds CNT technology allow to prepare conductive compounds with a loading less than 2-3 % resulting in a weight reduction of 5-15 % compared to other conductive fillers for comparable performance Examples of improved properties (1)

  5. Examples of improved properties (2) • Mechanical CNT allow the production of thinner parts with the same mechanical/conductivity balance than other fillers. This results in a weight reduction of ca. 10-20 %

  6. Application in the automotive industry CNT technology, through displacement of existing technology due to better mechanical properties, can result in a reduction of 10-30 kg per car. As a reduction of weight of 100kg results in a reduction of fuel consumption of 0.5L/100km. (Resource National Canada and Gent Univ.), a world wide application of CNT technology could lead to a global reduction of about 1MT of fuel consumption. Application in aircraft industry CNT technology can allow 10-15 wt% weight reduction at equal mechanical performances This would lead to a kerosene saving of 0.7-1.5 m³/plane/flight Examples of application: weight reduction

  7. CNT can be used as non halogenated flame retardant Improvement of thermal stability: about 100°C for polyethylene in a classical test With a lower filler content: from 40-60 % to 20-30 % With a weight reduction of : 5-25 % With less thread to the environment CNT can improve thermal protection coating Protection of metal and other substrate by a thin layer of plastic material containing less than 1wt% of additive, instead of commercial solutions containing 40 % of additive This leads to weight reduction in insulation. In aircraft tankers for example: reduction of 2-5 kg per tanker with the consecutive reduction of kerosene consumption. Examples of application: fire protection

  8. Examples of application: anti-foulingAnti fouling is saving 120 million tons of fuel per yearTo avoid adverse effects in the environment, new non-biocidal antifouling technologies are needed Biological evaluation of CNT based resin Adhesion strength of young adult barnacles Much lower adhesion strength No more trace of basal plate remaining attached to the surface « theoretical lower adhesion limit » T2 unfilled resin CNT based resin

  9. In all these examples the use of CNT provides the following benefits: less resources needed due to better efficiency, weight reduction and waste reduction less energy consumption leading to less CO2 emission better eco-efficiency: in fire protection and anti-fouling longer life cycle by improvement of ageing resistance Benefits: summary

  10. Toxicology studies carried out by Nanocyl according to OECD protocols: No acute dermal toxicity: no local irritation, no sensitization (Namur university, Straticell, JRC-Ispra) No in vitro mutagenicity (Ames test) No in vitro cytotoxicity (JRC –Ispra) In vivo inhalation studies going on (OECD 413 (90 days) :GLP study at BASF) Hazard assessment of CNTs

  11. Nanocyl is involved in several EU projects dealing with HSE issues Nanocyl is member of the PACTE sector group within CEFIC, in which the European carbon nanotubes producers are sharing HSE information, developing research projects and reviewing the safest ways of handling CNTS at production site and along the user chain (code of conduct) Nanocyl: a SME well active in risk research European cooperation in HSE

  12. Only a small fraction of CNTs is inhalable Exposure assessment of CNTs (1)

  13. Exposure assessment of CNTs (2) Difficulties in measuring particle size distribution in the nano range: cooperation with Naneum to develop detection devices. Example of particle size distribution of an artificially produced aerosol

  14. Minimising workers exposure Production in closed process Protective equipment and ventilation to reduce possible exposure MSDS and Code of conduct provided to customers No direct environmental exposure Closed process Nanotubes embedded in polymer matrices Exposure assessment of CNTs (3)

  15. Use of the results of EU research projects on toxicity of nanomaterials Definition of an OEL for workers? Measure of concentration and particle size distribution in air and comparison to background in production, research and development. Registration under REACH Willingness to be transparent: LCA and risk benefits analysis Prospective

  16. Thank you for your attention Question time

  17. Carbon nanotubes Nanoscale and low rigidity Spaghetti like agglomerates Asbestos Micro scale and high rigidity Bundle like agglomerates Differences: CNT vs. asbestos

  18. According to Donaldson “Short or curly carbon nanotubes did not behave like asbestos, and by knowing the possible dangers of long, thin carbon nanotubes, we can work to control them. It’s a good news story, not a bad one. It shows that carbon nanotubes and their products could be made to be safe.” Differences: CNT vs. asbestos

  19. Examples of improved properties (3) • Longer life product improved life cycle Ageing Photo-oxidation

  20. Examples of application: fire protection (2) Thermal barrier coating ThermoCyl ISO 2685/ 1100°C / 116±10 kW/m2 This document is the property of NANOCYL SA

  21. Interest of CNT in plastic processing • Through their action on the viscosity, CNT can improve by a factor of 5 the productivity in extrusion of thermoplastic polyurethane • In injection moulding, the use of CNT can reduce the distortion of injected parts and then reduce industrial waste during the processing and in particular during the development phase.

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