Extrudable compositions comprising fillers and devices made from the compositions
AssigneeThe Boeing Company
InventorsEric Alan Bruton, Loyal Bruce Shawgo
Life of this patent
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Abstract
A filter comprises a support substrate. A film is disposed on the support substrate, the film comprising a polymer matrix material and a filler. The filler has a particle size distribution configured to filter a desired range of wavelengths of light, the particle size distribution having been achieved by extrusion. An extrudable composition is also disclosed. The extrudable composition comprises a polymer matrix material and a filler. The filler has an average particle size ranging from about 1 nm to about 700 nm and a concentration ranging from 0.001 weight % to 0.3 weight %, relative to the total weight of the extrudable composition.
Claims20
A filter, comprising:
- a support substrate;
- and
- a film disposed on the support substrate, the film comprising a polymer matrix material and a filler,
- wherein the filler comprises a plurality of particles with a particle size distribution configured to filter a desired range of wavelengths of light, the particle size distribution having been achieved by extrusion, the filler having an average particle size ranging from about 1 nm to about 700 nm,
- wherein 90% to 100% of the plurality of particles have a particle size within 10% of an average target particle size, and
- wherein the polymer matrix material comprises at least one polymer chosen from polycarbonates, Polyethylene terephthalate (“PET”), Polyethylene (“PE”), acrylate polymers, vinyl polymers, polyvinylbutyral (“PVB”) and a PVB copolymer, the PVB copolymer comprising polyvinylbutyral units and one or more of polyvinyl alcohol units and polyvinyl acetate units.
A filter, comprising:
- a support substrate;
- a film disposed on the support substrate, the film comprising a polymer matrix material and a filler;
- and
- a second substrate disposed on the film, the film being disposed between the support substrate and the second substrate,
- wherein the filler comprises a plurality of particles with a particle size distribution configured to filter a desired range of wavelengths of light, the particle size distribution having been achieved by extrusion, and
- wherein the support substrate has a first refractive index, the film has a second refractive index, and the second substrate has a third refractive index, and wherein a ratio of the first refractive index to the second refractive index ranges from 0.9 to 1.1 and a ratio of the third refractive index to the second refractive index ranging from 0.9 to 1.1.
A filter, comprising:
- a support substrate;
- and
- a film disposed on the support substrate, the film comprising a polymer matrix material and a filler,
- wherein the filler comprises a plurality of particles with a particle size distribution configured to filter a desired range of wavelengths of light, the particle size distribution having been achieved by extrusion,
- wherein 90% to 100% of the plurality of particles have a particle size within 10% of an average target particle size,
- wherein the filler is chosen from carbon black, carbon nanotubes, graphene, TiO2, and combinations thereof, and
- wherein the polymer matrix material comprises at least one polymer chosen from polycarbonates, Polyethylene terephthalate (“PET”), Polyethylene (“PE”), acrylate polymers, vinyl polymers, polyvinylbutyral (“PVB”) and a PVB copolymer, the PVB copolymer comprising polyvinylbutyral units and one or more of polyvinyl alcohol units and polyvinyl acetate units.
Dependencies are inferred from the claim text.