The basic idea of creating the technology for production of nanodiamonds was based on fundamental research in military science and resulted from experiments with explosive substances, solid rocket fuels for example. Based on these experiments military science learned to make ultra dispersed diamonds. The size of such nanodiamond crystals is orders of magnitude smaller than other synthetic diamonds. This is fundamentally a new class of materials with unique and commercially valuable characteristics.
Our production technology employs "detonation synthesis" to create diamond particles with average sizes of 4-6 nm (nanometers) each (smaller and larger sized particles are also produced). The detonation synthesis technology employs charges of explosive substances which are detonated in high strength, hermetically sealed chambers. Diamond particles are formed from the free carbon of the molecules of the explosives at temperatures of approximately 3,500 degrees Celsius and at pressures of approximately 200,000 atmospheres.
A proprietary refinement process further modifies the results of the detonation synthesis stage to extract various grades of these "nanodiamonds" (also referred to as "ultra dispersed diamonds" or "UDD") that meet technical requirements for various applications including control of agglomeration and high suspension stability.
The initial detonation process creates a diamond blend ("DB") that contains, on average, 40 – 50% diamonds which are then subjected to a proprietary purification process. This unique refinement process distinguishes our products from known competitors by providing a variety of optimal "grades" and achieving the highest purity within the constraints of a scalable production process.
Detonation synthesis nanodiamonds delivered in our applications are customized to range from 3-50 nm in size, dependent upon application, and are the optimal engineering material (i.e., building blocks). DSND delivers material enhancements at the nano-molecular level that are far beyond the capabilities of mechanically created (i.e., ground down) nano-diamonds in every materials application. Characteristics include lubricity (continuous, smooth surface, lodges-in/fills gaps in metallic matrix), mechanical strength (hardest material known), potential enhancement of thermal conductivity, and smooth-round surface. Just as important, "one size does not fit all" And size and shape matter. NMPI produces different detonation nano-diamond products that are customized to their applications.
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Experimental Studies of Strength Properties of Polymer Composite Materials with Nanodiamonds
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