METAL POLYMER COMPOSITE WITH ENHANCED VISCOELASTIC AND THERMAL PROPERTIES
First Claim
Patent Images
1. A metal and polymer viscoelastic composite comprising:
- (a) a metal particulate, the particle size such that less than 5 wt % of the particulate is less than about 10 microns, the particulate in an amount of about 45 to about 95 vol % of the composite; and
(b) a polymer phase comprising about 5 to about 55 vol % of the composite,wherein the viscoelastic composite, when subject to a deforming force, exhibits a characteristic stress and strain curve with a yield stress maximum A at an ε
A, a lower yield stress minimum B at an ε
B, a second yield stress maximum and an initiation of failure C at ε
C and a 0 strain failure D at ε
D, the ε
D of the composite greater than 10% and each ε
represents an increase in % strain.
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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 viscoelastic character, color, magnetism, thermal conductivity, electrical conductivity, density, improved malleability and ductility and thermoplastic or injection molding properties.
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Citations
39 Claims
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1. A metal and polymer viscoelastic composite comprising:
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(a) a metal particulate, the particle size such that less than 5 wt % of the particulate is less than about 10 microns, the particulate in an amount of about 45 to about 95 vol % of the composite; and (b) a polymer phase comprising about 5 to about 55 vol % of the composite, wherein the viscoelastic composite, when subject to a deforming force, exhibits a characteristic stress and strain curve with a yield stress maximum A at an ε
A, a lower yield stress minimum B at an ε
B, a second yield stress maximum and an initiation of failure C at ε
C and a 0 strain failure D at ε
D, the ε
D of the composite greater than 10% and each ε
represents an increase in % strain.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A heat transfer structure comprising:
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(a) a heat source; (b) a heat transfer layer; and (c) a heated structure; wherein the heat transfer layer comprises a metal and polymer viscoelastic composite comprising a metal particulate having a particle size such that less than 5% of the particulate is less than about 10 microns, the particulate in an amount of about 45 to about 95 vol % of the composite;
a polymer phase comprising about 5 to about 55 vol % of the composite; and
an interfacial modifier comprising about 0.005 to about 2 wt % of the composite; and
the transfer layer has a thermal conductivity of greater than about than about 1 W-M−
1K−
1.- View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification