Ceramic composite
First Claim
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1. 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.
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Abstract
The invention relates to a ceramic particulate and polymer composite having enhanced viscoelastic and rheological properties.
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Citations
40 Claims
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1. 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:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A thermoplastic composite with improved viscoelastic properties comprising a shaped article comprising a melt blended ceramic particle in a polymer phase, the composite comprising:
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(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. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40)
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Specification