Titre : |
Drawing a cloak of invisibility over ships |
Type de document : |
texte imprimé |
Année de publication : |
2018 |
Article en page(s) : |
p. 19-20 |
Langues : |
Anglais (eng) |
Catégories : |
Marines (peinture) Revêtements antisalissures:Peinture antisalissures
|
Index. décimale : |
667.9 Revêtements et enduits |
Résumé : |
In a double benefit for the global economy and world climate, Evonik plans to make ship hulls invisible to micro-organisms and so to protect them against biofilms, algae, and bivalves. Growths of this kind, referred to as biofouling, push up fuel consumption in shipping and, thus also CO2 emissions on the world's oceans.
The International Maritime Organization estimates that the annual costs caused by biofouling lie in the billion-dollar range. Evonik is working on a solution to the problem in the form of 3 new eco-friendly coating that counteracts biofouling. The coating tricks micro-organisms into perceiving plain water in front of them, rather than the ship's hull ; as a result they often make no attempt to settle on the hull.
Biofouling has long been a problem for shipping companies the world over : organisms settle on the ship's walls, changing the smooth surfaces into a rough and ragged shell. This increases frictional resistance in the water, so that biofouling slows down ships. These thon need more energy to maintain their speed, which is bad news for bath fuel costs and the environment. Marine transport accounts far about 90% of global freight forwarding. |
Note de contenu : |
- One of the last unsolved problems in the industry
- Confusing the organisms
- FIGURES : The hybrid system acts as a cloak of invisibility - Antifouling protection combined with an easy-to-clean surface - Observation of test panels following a cycle of 35 days of growth and seven days of rotation (1-28 knots), shows outstanding efficiency - Powerful antifouling effect demonstrated
- Table : Impact of biofouling on the global merchant fleet |
En ligne : |
https://drive.google.com/file/d/10l1_iVbAgVLruaOu0iQ48i22tzLBD74o/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30535 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4639 (03/2018) . - p. 19-20