ENHANCED PROPERTY METAL POLYMER COMPOSITE
First Claim
Patent Images
1. A metal and polymer viscoelastic composite comprising:
- (a) a metal particulate, the particulate having a particle size greater than about 10 microns, a particle size distribution such that there is an effective amount of particulate in the range of 10 to 70 microns and greater than 70 microns to form the composite and a circularity of greater than 13; and
(b) a polymer phase;
wherein the viscoelastic composite has a tensile elongation of about at least 5%.
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Abstract
The invention relates to a metal polymer composite having properties that are enhanced or increased in the composite. Such properties include color, magnetism, thermal conductivity, electrical conductivity, density, improved malleability and ductility and thermoplastic or injection molding properties.
145 Citations
99 Claims
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1. A metal and polymer viscoelastic composite comprising:
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(a) a metal particulate, the particulate having a particle size greater than about 10 microns, a particle size distribution such that there is an effective amount of particulate in the range of 10 to 70 microns and greater than 70 microns to form the composite and a circularity of greater than 13; and (b) a polymer phase; wherein the viscoelastic composite has a tensile elongation of about at least 5%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 70, 72, 73, 78, 79, 80, 87, 89, 90, 91, 92, 93, 95, 96, 97, 98, 99)
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18. A metal fluoropolymer viscoelastic composite comprising:
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(a) a metal particulate, the particulate having a particle size greater than about 10 microns, a particle size distribution such that there is an effective amount of particulate in the range of 10 to 70 microns and greater than 70 microns to form the composite and a circularity of greater than 13; and (b) a fluoropolymer phase; wherein the composite is free of an interfacial modifier and the viscoelastic composite has a tensile elongation of about at least 5%. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 76, 77)
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35. A metal polymer composite comprising:
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(a) a metal particulate, the metal having a density greater than about 13 gm-cm−
3 and a particle size greater than about 10 microns; and(b) a polymer phase; wherein the metal comprises a particle having a distribution of particle size, the polymer in sufficient amounts to occupy substantially the excluded volume of the particulate and the composite density is greater than about 11 gm-cm−
3.- View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 71, 74, 75, 81, 82, 83, 84, 85, 86, 88)
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45. A metal polymer composite comprising a metal particulate in a polymer phase, the composite comprising:
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(a) about 90 to 50 volume-% of a metal particulate, having a density greater than 13 gm-cm−
3 and less than 23 gm-cm−
3, a particle size greater than 10 microns, at least 5 wt.-% of particulate having a particle size distribution of 10 to 70 microns a circularity greater than 13 and an aspect ratio less than 3;(b) about 10 to 50 volume-% of a polymer phase; and (c) about 0.005 to 2 wt.-% of an interfacial modifier material; wherein the composite density is greater than about 11 gm-cm−
3.- View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53)
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54. A metal polymer composite comprising a metal particulate in a polymer phase, the composite comprising:
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(a) about 50 to 90 volume-% of a metal particulate having a density greater than 13 gm-cm−
3, the particulate comprising at least about 5 wt.-% having a particle size about 10 to 70 microns, at least about 5 wt.-% having a particle size about 70 to 250 microns and a circularity about 13 to 20;(b) about 50 to 10 volume-% of a polymer phase; and (c) about 0.005 to 2 volume-% of an interfacial modifier; wherein the composite density is greater than about 11 gm-cm−
3.- View Dependent Claims (55, 56, 57, 58, 59, 60, 61)
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62. A metal polymer composite comprising a metal particulate in a polymer phase, the composite comprising:
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(a) about 50 to 90 volume-% of a metal particulate having a density greater than 11 gm-cm−
3, the particulate comprising at least about 5 wt.-% having a particle size about 10 to 70 microns, at least about 5 wt.-% having a particle size about 70 to 250 microns and a circularity about 14 to 20;(b) a fluoropolymer elastomer phase; wherein the composite density is greater than about 11 gm-cm−
3.- View Dependent Claims (63, 64, 65, 66, 67, 68, 69)
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94. A metal particle-polymer composite comprising a metal particulate having a range of particle sizes such that about at least 5 wt.-% of particulate in the range of about 10 to 70 microns and about at least 5 wt.-% of particulate in the range of about 70 to 250 microns, and a polymer, the composite having a van der Waals'"'"' dispersion bond strength between molecules in adjacent particles of less than about 4 kJ-mol−
- 1 and a bond dimension of 1.4 to 1.9 Å
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- 1 and a bond dimension of 1.4 to 1.9 Å
Specification