Ready-to-Sinter Nanopowders for the Ceramic Industry

Nanopowders and safety

True to our values, it is the policy of Nanoe to ensure a continuous improvement of the safety and health of our team members, our customers, and the environment. While legislation relevant for health, safety and environment aspects of nanomaterials does not currently exist, Nanoe already makes a commitment for a careful and responsible use of nanopowders. Insofar as there is a lack of reliable toxicological data, it is important to prevent any potential risks by avoiding as much as possible exposure to these materials.

Possible risks for health:

Problems related to the inhalation: according to the 2006 study about nanomaterials led by Vicki L. Colvin (director of the Environmental and Biological Nanotechnology Center of Rice University), in certain cases, nanoparticles under 50 nm can cross blood vessel (by going through the hematic-meningeal barrier), and eventually end in the intercellular fluids.

Experimental studies led in 2004 by Professor Günter Oberdörster’s group (Rochester University, New-York state) also bring to light a systemic distribution of nanoparticles in every organ by the blood circulation.

Besides, according to those studies, the nanoparticle capacity to cross the cutaneous barrier remains controversial.

NB : It is important to mention that in the case of agglomerated nanopowders, sintered nanopowders, nanopowders in colloidal suspension or mixed with additives, the material loses from its volatility and therefore is no longer as dangerous as nanoparticles.

While waiting for more advanced and accurate studies, Nanoe recommends to apply the precautionary principle and to look for the lower exposure level to nanopowders in their particle state, by following the next protective measures:

Masks : The INRS (the French National Institute of Research and Security) recommends to wear a mask or a semi-mask using fiber filters of class P3 or FFP3 (lien internet), indeed, according to the filtration theory, filters have better performances with nanoparticles than with bigger particles. The study led by the INRS concludes to the capacity of those masks to filter particles over 4 nm.

Protection clothes : The CEA-Liten (the French Atomic Energy Commission) advises airproof disposable dresses, and also the use of gloves and glasses. At the very least, Nanoe recommends using gloves, glasses and specific overalls.

Collective protection : limitation and evacuation of dangerous gases, vapors and dusts.

Workroom : careful cleaning, with wet linen, of the ground and the area of work (the use of air jet or broom is banned).

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