Heat-transfer fluid containing nano-particles and carboxylates

Details Heat-transfer fluid containing nano-particles and carboxylates Heat-transfer fluid containing nano-particles and carboxylates

C - Chemistry, Metallurgy

09

K

C09K 5/08 (2006.01) C09K 5/20 (2006.01) C10M 171/06 (2006.01)

Patent

CA 2413463

The use of sub-micron particles (nano-particles) and carboxylates for improving the heat-exchange characteristics of heat-transfer fluids or antifreeze coolants. The carboxylates form a stable physisorbed- or chemisorbed carboxylate protective layer on metallic nano-particles that does not hinder heat-transfer. The combination of carboxylates and metallic nano- particles provide excellent corrosion protection, improved heat-transfer and enhances the stability of the sub-micron particles (nano-particles) in suspension. Sub-micron particles (nano-particles) treated with carboxylates to form a chemisorbed carboxylate protective layer are used in a heat transfer fluid or a lubricant or hydraulic fluid or soap.

Cette invention concerne l'utilisation de particules submicroniques (nanoparticules) et de carboxylates afin d'améliorer les caractéristiques d'échange thermique de fluides caloporteurs et des liquides de refroidissement antigel. Les carboxylates forment une couche protectrice de carboxylate physisorbée ou chimisorbée sur les nanoparticules métalliques qui n'entrave pas le transfert de chaleur. La combinaison des carboxylates et des nanoparticules métalliques offre une excellente protection contre la corrosion, ainsi qu'un transfert de chaleur amélioré et accroît la stabilité des particules submicroniques (nanoparticules) en suspension. Les particules submicroniques (nanoparticules) traitées avec des carboxylates dans le but de former un couche protectrice de carboxylate chimisorbée peuvent être employées dans un fluide caloporteur, un lubrifiant ou un fluide ou un savon hydrauliques.

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