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US 8,841,358 B2Granted
Ceramic composite
AssigneeTundra Composites, LLC
InventorsKurt E. Heikkila, Rodney K. Williams, John S. Kroll
Life of this patent
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Abstract
The invention relates to a ceramic particulate and polymer composite having enhanced viscoelastic and rheological properties.
Claims40
A thermoplastic composite with improved viscoelastic properties comprising a shaped structural article comprising a melt blended ceramic particulate in a thermoplastic polymer phase, the thermoplastic composite comprising:
- (a) about 30 to 87 vol. % of a ceramic particulate having a particle size greater than about 5 microns having an exterior coating of about 0.005 to 5 wt-% of an interfacial modifier, the percentage based on the composite;
- and
- (b) a thermoplastic polymer phase;
- wherein the ceramic particulate comprises a particle size PS of about 10 to 500 microns and the composite additionally comprises a second particulate with a second particle size PS1 that differs from PS by at least 5 microns, the thermoplastic is free of a polymer consisting of tetrafluoroethylene and the ceramic particulate comprises a glass microsphere.
1 more element
A thermoplastic composite with improved viscoelastic properties comprising a shaped article comprising a melt blended ceramic particle in a polymer phase, the composite comprising:
- (a) a ceramic particle, having a density greater than 0.10 gm-cm−3 and less than 10 gm-cm−3;
- and
- (b) about 13 to 51 vol. % of a thermoplastic polymer phase;
- wherein the ceramic particulate comprises a particle size PS of about 10 to 500 microns and the composite comprises a second particulate with a second particle size PS1 that differs from PS by at least 5 microns, the particulate has an exterior coating comprising about 0.005 to 3 wt.-% of an interfacial modifier, based on the composite;
- and the composite density is about 0.9 to 10 gm-cm−3;
- wherein the thermoplastic composite is free of a polymer consisting of tetrafluoroethylene, the composite comprises about 87 to 48 volume-% of a ceramic particulate having a circularity greater than 12.5 and an aspect ratio less than 1:9.
3 more elements
Dependencies are inferred from the claim text.