Composite film
The present disclosure relates to a multilayer composite that may include a first porous layer, and a first barrier layer overlying the first porous layer. The first barrier layer may include a polyaramid material, a polyimide material, or any combination thereof. The multilayer composite may have a flame resistance rating of at least about 180° C. and a 50% strain compression rating of not greater than about 600 kPa.
1. A multilayer composite comprising:
a first porous layer comprising a silicone material, and
a first barrier layer overlying the first porous layer, wherein the first barrier layer comprises a polyaramid material, a polyimide material, or a combination of a polyaramid material and a polyimide material,
wherein the first porous layer has a thickness of at least about 1 mm an not greater than about 13 mm,
wherein the multilayer composite comprises a flame resistance rating of not greater than about 180° C., and
wherein the multilayer composite comprises a 50% strain compression rating of not greater than about 600 kPa.
2. The multilayer composite of claim 1 , wherein the multilayer composite comprises a flame resistance rating of not greater than about 150° C.
3. The multilayer composite of claim 1 , wherein the composite comprises a 50% strain compression rating of not greater than about 400 kPa.
4. The multilayer composite of claim 1 , wherein the multilayer composite comprises a density of not greater than about 560 kg/m 3 .
5. The multilayer composite of claim 4 , wherein the multilayer composite comprises a density of at least about 140 kg/m 3 .
6. The multilayer composite of claim 1 , wherein the first porous layer comprises a silicone material.
7. The multilayer composite of claim 6 , wherein the first porous layer comprises a silicon material content of at least about 30 wt. % and not greater than about 99 wt. % for a total weight of the first porous layer.
8. The multilayer composite of claim 1 , wherein the first porous layer comprises a filler material.
9. The multilayer composite of claim 8 , wherein the first porous layer comprises a filler material content of at least about 10 wt. % and not greater than about 90 wt. % for a total weight of the first porous layer.
10. The multilayer composite of claim 8 , wherein the filler material comprises mica kaolin.
11. The multilayer composite of claim 8 , wherein the filler material comprises alumina trihydrate (ATH, hydrated alumina), alumina monohydrate (boehmite), magnesium hydroxide (MDH) and other metal hydroxides.
12. A thermal barrier composite comprising:
a first porous layer, and
a first barrier layer overlying the first porous layer, wherein the first barrier layer comprises a polyaramid material, a polyimide material, or a combination of a polyaramid material and a polyimide material,
wherein the first porous layer has a thickness of at least about 1 mm an not greater than about 13 mm,
wherein the thermal barrier composite comprises a flame resistance rating of at least about 200° C., and
wherein the thermal barrier composite comprises a compression rating of not greater than about 350 kPa at 50% strain.
13. The thermal barrier composite of claim 12 , wherein the multilayer composite comprises a flame resistance rating of not greater than about 150° C.
14. The thermal barrier composite of claim 12 , wherein the composite comprises a 50% strain compression rating of not greater than about 400 kPa.
15. The thermal barrier composite of claim 12 , wherein the multilayer composite comprises a density of not greater than about 560 kg/m 3 .
16. The thermal barrier composite of claim 15 , wherein the multilayer composite comprises a density of at least about 140 kg/m 3 .
17. The thermal barrier composite of claim 12 , wherein the first porous layer comprises a silicon material content of at least about 30 wt. % and not greater than about 99 wt. % for a total weight of the first porous layer.
18. The thermal barrier composite of claim 12 , wherein the first porous layer comprises a filler material.
19. The thermal barrier composite of claim 12 , wherein the composite comprises a thickness ratio PL1/BL1 of at least about 2.0, where PL1 is equal to the thickness of the first porous layer and BL1 is equal to the thickness of the first barrier layer.