Halloysite is an aluminosilicate clay exhibiting a rare, naturally occurring hollow tubular structure. Halloysite tubes have a length in the range of 0.5 - 3.0 microns, an exterior diameter in the range of 50 - 70 nanometers and an internal diameter (lumen) in the range of 15 - 30 nanometers.
Halloysite is non-toxic and natural - demonstrating high biocompatibility without posing any risk to the environment. It is chemically identical to commonly used kaolin clay (Al2Si2O5(OH)4 x nH2O) with one layer of water molecules existing between layers of alumina and silica. Formation occurs when kaolin sheets roll into tubes due to the strain caused by a lattice mismatch between the adjacent silicon dioxide and aluminum oxide layers. This is a process that occurs over millions of years under extremely rare conditions.
Applied Minerals markets its line of Halloysite products under the DRAGONITE™ brand name. The Company produces different product grades tailored to enhance the property performance of each target application.
Advanced reinforcing filler used at loadings of 20-50 weight % offering improved modulus, yield strength and HDT. This product grade offers unique advantages compared to other reinforcing fillers such as glass fiber, mica, wollastonite or talc. These include excellent rentention of impact resistance, elongation to break, control over CTE and warpage, and lack of abrasiveness. Flame retardance up to V0 level is also possible when used alone or as a synergist.
High performance additive for engineering thermoplastics used at loadings of just 1-3% offering the ultimate in mechanical performance and cycle time reduction. This product grade offers a drop-in solution for customers needing superior properties without the density penalty associated with traditional fillers. By using Dragonite-HP, customers can reduce their overall manufacturing and materials costs through cycle time improvements and thin-walling.
Highest purity Dragonite™ product - meeting the strict specifications of the cosmetic industry.
AMIRON™ advanced natural iron oxides for a range of pigmentary and technical applications.