C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 31/04 (2006.01) C04B 35/52 (2006.01) C04B 35/626 (2006.01) C08K 3/04 (2006.01) C09C 1/46 (2006.01) C09C 3/04 (2006.01) C09D 7/12 (2006.01) C22C 1/05 (2006.01) H01B 1/24 (2006.01) H01M 4/02 (2006.01) H01M 8/02 (2006.01) H01M 4/58 (2006.01)
Patent
CA 2391884
The invention relates to a method for increasing the Scott density of synthetic and/or natural graphite powders of any particle size distribution, preferably of highly-pure graphite, by subjecting the graphite powder to an autogenous surface treatment. The inventive powder is used, in particular, for producing dispersions, coatings with an increased graphite/binder ratio and increased electric and thermal conductivity, gas and liquid-tight coatings on metal substrates, thermoplastic or duroplastic graphite-polymer composites, or for producing metallic, non-ferrous sintering materials.
La présente invention concerne un procédé permettant d'augmenter la densité Scott de poudres de graphite synthétiques et/ou naturelles, qui présentent une répartition de dimension des particules quelconque, de préférence de graphite très pur. Ce procédé consiste à soumettre ladite poudre de graphite à un traitement de surface autogène. La présente invention concerne également l'utilisation de ladite poudre, notamment dans la production de dispersions, de revêtements à rapport graphite/liant augmenté et à conductivité thermique et électrique augmentée, de revêtements étanches aux gaz et aux fluides, sur des substrats métalliques, de composites graphite-polymère thermoplastiques ou thermodurcissables ou de matériaux frittés, métalliques, non ferreux.
Cattaneo Davide
Spahr Michael
Streb Klaus
G. Ronald Bell & Associates
Timcal Ag
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