Parte del contenido de esta aplicación no está disponible en este momento.
Si esta situación persiste, contáctenos aComentarios y contacto
1. (WO2018146651) THERMAL MULTI-LAYER INSULATION AND RADIO-FREQUENCY ABSORBER BLANKET
Nota: Texto obtenido mediante procedimiento automático de reconocimiento óptico de caracteres.
Solo tiene valor jurídico la versión en formato PDF

C L A I M S

1. Thermal multi-layer insulation (MLI) and radio-frequency (RF) absorber blanket having a top layer for blocking infrared and visible radiation, comprising:

an upper layer comprising a patterned frequency-selective structure (FSS) coating whose capacitance is tuned in function of the RF frequency band to be absorbed; one or more intermediate resistive layers for RF absorption;

a lower RF ground layer.

2. Thermal MLI and RF absorber blanket according to claim 1, wherein the upper layer comprises a polymeric film and a patterned metallic coating, said patterned metallic coating being the frequency-selective structure and being the top layer for blocking infrared and visible radiation.

3. Thermal MLI and RF absorber blanket according to claim 2, wherein the polymeric film is polyimide film or polyester film, in particular a poly (4,4'-oxydiphenylene- pyromellitimide) or a poly (5,5'-Bi-2-benzofuran-l,l',3,3'-tetrone), or in particular a Kapton(tm) and Upilex(tm), or Mylar (tm) commercial film, respectively.

4. Thermal MLI and RF absorber blanket according to any of the claims 2-3, wherein the metallic coating is vacuum deposited aluminium (VDA), in particular the upper layer is polyimide with VDA.

5. Thermal MLI and RF absorber blanket according to claim 1, wherein the upper layer comprises a patterned polyimide film loaded with inorganic carbon, which is said patterned frequency-selective structure.

6. Thermal MLI and RF absorber blanket according to the previous claim, wherein the upper layer comprises a polymeric film and a patterned Black Kapton(tm) film, said patterned Black Kapton(tm) film being the frequency-selective structure.

7. Thermal MLI and RF absorber blanket according to any of the previous claims, wherein said patterned frequency-selective structure is obtainable by etching said pattern, in particular by laser etching.

8. Thermal MLI and RF absorber blanket according any of the claims 1-6, wherein said patterned frequency-selective structure is obtainable by cutting said pattern, in particular by laser cutting.

9. Thermal MLI and RF absorber blanket according to any of the previous claims, wherein the patterned FSS sheet has a pattern of square, rectangular, hexagonal, or circular patches arranged in a grid, in particular in a pattern of groups of unconnected patches arranged in a grid.

10. Thermal MLI and RF absorber blanket according to any of the previous claims, wherein the one or more intermediate resistive layers for RF attenuation are 1 to 5.

11. Thermal MLI and RF absorber blanket according to any of the previous claims, wherein an intermediate resistive layer comprises a polyimide film loaded with inorganic carbon, in particular Black Kapton(tm), in particular wherein an intermediate resistive layer further comprises a spacer layer, in particular a spacer layer being a polymeric layer, in particular a Upilex(tm) foam layer, a polyester mesh layer, Beta Cloth scrim layer, glass fabric scrim layer, ceramic fabric scrim layer or a Nomex(tm) scrim layer.

12. Thermal MLI and RF absorber blanket according to any of the previous claims comprising one or more adhesive layers between any said contiguous layers and/or sheets, in particular an adhesive layer comprises transfer tape, in particular transfer tape 3M(tm) 9460 or 3M(tm) 966.

13. Thermal MLI and RF absorber blanket according to any of the previous claims wherein said ground layer is a MLI or the first layer of a MLI comprising a deposited metallic coating, in particular a vacuum deposited aluminium (VDA) coating.

14. Thermal MLI and RF absorber blanket according to any of the previous claims, further comprising a topmost RF-transparent IR-filter comprising:

a first patterned FSS sheet;

an intermediate polymeric film which is substantially transparent to IR;

a second patterned FSS sheet;

wherein the first and second patterned FSS sheets have complementary patterns.

15. Thermal MLI and RF absorber blanket according to the previous claim, wherein the first and second patterned FSS sheets have complementary checkerboard patterns of unconnected square patches, complementary to the extent that vertices of adjacent squares are separated by a gap,

further in particular wherein said intermediate polymeric film is a polyimide film or polyester film, or in particular a polyimide, Mylar (tm) or Upilex (tm) film; and said first and second patterned FSS sheets are patterned deposited metallic coatings, further in particular being patterned vacuum deposited aluminium (VDA) coatings, further in particular obtainable by laser etching.