Composite materials
AssigneeMoldite, Inc.
InventorLawrence W. Kimberly
Life of this patent
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Abstract
New composite materials having a high density of small particles, such as hollow microspheres, in a matrix material are disclosed. The microspheres are densely packed in the matrix material such that adjacent microspheres are positioned in contact with each other or very close together. Fiber flanking may be provided on the opposite sides of a layer of a core of composite material having the small particles and matrix material. Also disclosed are methods of making and using the composite materials.
Claims44
A composite material comprising:
- a cross-linked polymeric material which is generally indispersible in water, and
- a plurality of microsphere particles in the polymeric material, the microsphere particles ranging from about 69% by volume to about 85% by volume of the composite material and consisting essentially of diameters ranging from about 1 micron to about 350 microns;
- wherein the composite material is substantially free of voids in the polymeric material between the microsphere particles.
A composite material comprising:
- a non-water-dispersible cross-linked polymeric material from about 15% by volume to about 31% by volume;
- and
- microspheres from about 69% by volume to about 85% by volume, substantially all of the microspheres having diameters ranging from about 1 micron to about 350 microns;
- wherein the composite material is substantially free of gas space in the polymeric material between the microspheres.
A composite material comprising a water non-dispersible cross-linked resin matrix binder material and microspheres, the microspheres having a volume of about 75% to about 85% of a volume of the matrix binder material combined with the microspheres and consisting essentially of diameters ranging from about 1 micron to about 350 microns;
- wherein the matrix binder material is substantially free of voids between the microspheres.
A composite material comprising:
- a core having a cross-linked polymeric material from about 15% to about 25% by volume of the core and which is generally indispersible in water, and microspheres from about 75% to about 85% by volume of the core, substantially all of the microspheres having diameters ranging from about 1 micron to about 350 microns;
- and
- a flanking layer bonded to the core;
- wherein the polymeric material is substantially free of voids between the microspheres.
A composite material comprising a water non-dispersible cross-linked resin matrix binder material and microspheres, the microspheres having a volume of about 69% to about 85% of a volume of the matrix binder material combined with the microspheres and consisting essentially of diameters ranging from about 1 micron to about 350 microns;
- wherein the matrix binder material is substantially free of voids between the microspheres.
A composite material comprising:
- a core having a cross-linked polymeric material from about 15% to about 31% by volume of the core and which is generally indispersible in water, and microspheres from about 69% to about 85% by volume of the core, substantially all of the microspheres having diameters ranging from about 1 micron to about 350 microns;
- and
- a flanking layer bonded to the core;
- wherein the polymeric material is substantially free of voids between the microspheres.
Dependencies are inferred from the claim text.