Formation of composite particulate material using high energy rotary impact milling
AssigneeEntoleter, Inc.
InventorWilliam L. Kuechler
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Abstract
The formation of composite materials is disclosed, using high energy rotary impact milling. The illustrations utilize polymer resin particles as the matrix material, and solid particle fillers. Ultra-small particle sizes are used for both the matrix and filler materials. When the resultant materials are processed by usual forming techniques, the resultant composite materials possess strength properties approximately equivalent to those of the unfilled matrix material, even though heavily filled.
Claims13
A method of forming a composite particulate material having a plastic, particulate, integratable ingredient capable of being formed into a continuous phase, coherent body and a particulate additive ingredient of submicro particle size, comprising impact milling of said two ingredients in a rotary mill at a linear speed for the impactors of the mill of at least about 300 feed per second to cause the additive particles to deagglomerate and adhere to the plastic particles as substantially nonagglomerated individual particles until at least about twenty percent of weight of the composite is said additive.
A method of forming a composite material from a first particulate ingredient capable of being formed into a continuous phase coherent plastic body, and a second particulate ingredient of submicro particle size, said submicro particles having a tendency to cohere into agglomerates, comprising impact milling said two ingredients together by suspending them in a rotary impact mill, and driving said mill at an impactor speed that is sufficient to cause a mix of said two particulate ingredients with a dispersion of said second particulate ingredient throughout said mix and to cause said second ingredient particles to deagglomerate and adhere to said first ingredient particles as substantially non-agglomerated individual particles, until at least about twenty percent by weight of the composite is said second ingredient.
Dependencies are inferred from the claim text.