Wisconsin Alumni Research Foundation

Mobil Oil Corporation

Don H Rasmussen

Carl R Loper, Jr

John Harry Perepezko

Gregory A Campbell

Jeffery S Smith

Controlled foams of crystalline amorphous polymers include a second phase polymeric material having a transition temperature below that of the matrix polymeric material. The second phase material provides nucleating sites for the growth of gas formed cells which are limited in size by the particle size of the second phase polymeric material.

Controlled microcellular foams of crystalline amorphous polymers

A method of controlling the nucleation of cells in a polymeric foam material includes blending a matrix material with a second phase material which provides sites for bubble nucleation. The selection of the second phase material controls the size and density of the cells.

Controlling heterogeneous nucleation and growth of foams

The preparation of micron sized droplets of high melting point metals by shearing the metal in the molten state into micron sized droplets while in a carrier in the form of a molten inorganic salt, glass or gas, in the presence of an oxidizing agent to form a thin protective coating on the micron sized particles while in their molten state and then allowing the formed micron sized particles to solidify.

Preparation of micron sized metal droplets

Bulk shapes and solid structures of amorphous metals formed of micron sized particles produced by droplet emulsion technique whereby undercooled droplets are solidified in the amorphous state with a stabilizing coating on the surfaces thereof, the shapes and solid structures being formed by dispersing the stabilizing coating and bringing the particles into intimate metal to metal contact for atomic bonding, without raising the temperature to crystallization temperature.

Amorphous metal structures and method

The preparation of micron sized spherical particles of metals comprising emulsification of the metal in the molten state in a carrier fluid, preferably in the form of an inert liquid, and reacting the molten metal while in the emulsified state in the fluid to form an insoluble reaction product on the surface which stabilizes metal droplets in the emulsion.

Growing community of inventors

Canton, NY, United States of America

Don H Rasmussen