Diamond micropowder powder and capture method thereof, and the diamond slurries that disperseed this diamond micropowder powder

Diamond micropowder powder and capture method thereof, and the diamond slurries that disperseed this diamond micropowder powder

  • CN 101,641,286 A
  • Filed: 02/08/2008
  • Published: 02/03/2010
  • Est. Priority Date: 02/09/2007
  • Status: Active Application
First Claim
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1. the capture method of a diamond micropowder powder is characterized in that, comprises following operation:

  • (1) for containing the diamond micropowder powder that primary particle size is the diamond particles below the 50nm, diamond particle surface in conjunction with or adhere to the hydrophilic functional group, give the operation of surface hydrophilicity;

    (2) diamond with surface hydrophilicity is dispersed in the water, carries out slurried operation;

    (3) 4 * 10 3Long-pending (hereinafter referred to as " centrifugal loading is long-pending ") 200 * 10 of the acceleration that G is above and acceleration and centrifugal force loading time 3G divides under the condition of above (wherein G is a universal gravity constant), and slurries are supplied with the ultracentrifugation lock out operation, makes bigger particle precipitation of particle diameter ratio and isolating operation;

    And (4) by in slurries, adding positively charged ion, be captured in the operation of the minuteness particle that suspends in the slurries,In the size-grade distribution histogram that detects based on size classification, intermediate value D 50Below 20nm, and D 10And D 90With respect to D 50Ratio be in certain limit.

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