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US 12,173,127 B2Granted
Composite materials and filaments composed of the same for printing three dimensional articles
AssigneeUniversity of South Florida
InventorsJing Wang, Vishvajitsinh Kosamiya
Life of this patent
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Abstract
Described herein are composite materials composed of ceramic particles coated with a surfactant incorporated within a polymer matrix, methods of making same, filaments composed of the same, and articles printed using the filaments. The composite materials and articles described herein have desirable electronic and thermal properties for use in radio frequency (RF) and millimeter wave devices and demonstrate reliable performance at elevated humidity levels.
Claims18
A composite material comprising:
- a polymer matrix composed of a material selected from the group consisting of a cycloolefin polymer (COP), polystyrene, polypropylene, acrylonitrile butadiene styrene (ABS), polyester, acetal copolymer polyoxymethylene, acetal homopolymer polyoxymethylene, polyacetal, polyacrylonitrile, polyamide-imide, polyaryletherketone, polybutadiene, polybutylene, polydicyclopentadiene, polyketone, polyetheretherketone, polyetherimide, polyethersulfone, polyphenylene oxide, polyphenylene sulfide, polyphthalamide, polysulfone, polyvinylidene chloride, and combinations thereof;
- and
- calcined ceramic particles dispersed throughout the polymer matrix, wherein the calcined ceramic particles comprise a surfactant coating and the calcined ceramic particles are composed of a material selected from the group consisting of TiO2, Al3Mg3B56, (AlN)x·(Al2O3)1-x, BaTiO3, BeO, Bi2Sr2Can-1CunO2n+4+x, Bi12TiO20, Bi4Ti3O12, Bi2Ti2O7, 3CaO·Al2O3, 12CaO·7Al2O3, CaO·Al2O3, CaO·2Al2O3, CaO·6Al2O3, CeB6, Dy2Ti2O7, GeO2, HfB2, Ga5La3O14Si, LaB6, La1-xSrxMnO3, LaYbO3, Pb(ScxTa1-x)O3, Pb(ZrxTi1-x)O3, MgB2, MgO, MoSi2, NbB2, SiB3, SiB4, SiB6, SiC, SiO2, Si3N4, Si2N2O, Na0.5Bi0.5TiO3, SrTiO3, WSi2, W2N, WN, WN2, YBa2Cu3O7, ZnO, ZrO2, Ba0.55Sr0.45TiO3, MgCaTiO2, Ba0.64Sr0.36TiO3, CaTiO3 and combinations thereof,
- wherein the calcined ceramic particles are present in an amount of from about 15 vol % to about 80 vol % of the composite material.
1 more element
A composite material comprising:
- a polymer matrix composed of a material selected from the group consisting of a cycloolefin polymer (COP), polypropylene, acrylonitrile butadiene styrene (ABS), and combinations thereof;
- calcined ceramic particles dispersed throughout the polymer matrix, wherein the calcined ceramic particles comprise a surfactant coating and the calcined ceramic particles are composed of a material selected from the group consisting of TiO2, Ba0.55Sr0.45 TiO3, MgCaTiO2, Ba0.64Sr0.36 TiO3, or CaTiO3;
- and
- a maleic anhydride grafted polypropylene wax,
- wherein the calcined ceramic particles are calcined at a temperature of at least 1100° C. prior to dispersal in the polymer matrix,
- wherein the calcined ceramic particles are present in an amount of from about 15 vol % to about 80 vol % of the composite material,
- wherein the surfactant is γ-aminopropyltriethoxysilane,
- wherein the surfactant is present in an amount of from about 0.1 ml to about 1 mL per 10 g of calcined ceramic particles, and
- wherein the composite material has a loss tangent of from about 0.0015 to about 0.0035 when an electromagnetic signal comprising a frequency of from about 4 GHz to about 26.5 GHz is applied to the composite material.
6 more elements
A composite material comprising:
- a polymer matrix composed of a cycloolefin polymer (COP);
- calcined ceramic particles dispersed throughout the polymer matrix, wherein the calcined ceramic particles comprise a surfactant coating and the calcined ceramic particles are composed of TiO2;
- and
- a maleic anhydride grafted polypropylene wax,
- wherein the calcined ceramic particles are calcined at a temperature of at least 1100° C. prior to dispersal in the polymer matrix,
- wherein the calcined ceramic particles are present in an amount of from about 20 vol % to about 60 vol % of the composite material,
- wherein the surfactant is γ-aminopropyltriethoxysilane,
- wherein the surfactant is present in an amount of from about 0.1 ml to about 1 ml per 10 g of calcined ceramic particles.
5 more elements
Dependencies are inferred from the claim text.