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US 2023/0053977 A1Published application
Microwave absorbing materials and molded articles for automotive radar sensor applications
AssigneeShpp Global Technologies B.V.
InventorsNorberto SILVI, Martin SAS, Joel THAMBI, Wei ZHAO, Jianhua XU
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Abstract
Disclosed is a composite from about 50 wt. % to about 90 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polycarbonate polysiloxane copolymer; and from about 10 wt. % to about 50 wt. % of a carbon-based filler. The composite exhibits a dielectric constant ε′ of between 5 and 20 and a dissipation loss ε″ of between 0.1 and 6, measured at frequencies between about 10 and 120 GHz.
Claims15
A composite comprising:
- from about 50 wt. % to about 90 wt. % of a thermoplastic resin, wherein the
- thermoplastic resin comprises a polycarbonate polysiloxane copolymer;
- and from about 10 wt. % to about 50 wt. % of a carbon-based filler,
- wherein the composite exhibits a dielectric constant 6′ of between 5 and 20 and a
- dissipation loss 6″ of between 0.1 and 6, measured at frequencies between about 10 and about 120 GHz and
- wherein the combined weight percent value of all components does not exceed 100 wt.
- %, and all weight percent values are based on the total weight of the composite.
4 more elements
An autoradar sensor for electromagnetic radiation comprising a composite, the composite comprising:
- from about 50 wt. % to about 90 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polycarbonate polysiloxane copolymer;
- and
- from about 10 wt. % to about 50 wt. % of a carbon-based filler,
- wherein the composite exhibits a dielectric constant δ′ of between 5 and 20 and a dissipation loss ε″ of between 0.1 and 6, measured at frequencies between about 10 and 120 GHz and
- wherein the combined weight percent value of all components does not exceed 100 wt. %, and all weight percent values are based on the total weight of the composite.
2 more elements
Dependencies are inferred from the claim text.