Polymer-aerogel/fiber and polymer-aerogel/textile composites and related systems and methods
The present disclosure generally relates to polymer-aerogel/fiber composite materials, polymer-aerogel/textile composite materials, and systems and methods for producing them. The gel material can comprise, in some embodiments, a network of polymer. The fiber and/or textile material can comprise at least one of any natural, synthetic, and/or mineral fiber. In some cases, certain combinations of materials, solvents, and/or processing steps may be synergistically employed so as to enable manufacture of materials suitable for use in apparel, soft goods, and other consumer applications which may benefit from the properties of a polymer-aerogel/fiber composite and/or the polymer-aerogel/textile composite.
1 . A composite fiber, comprising:
a fiber; and
a polymer aerogel material conformally coating an external surface of the fiber,
wherein the composite fiber has an average cross-sectional diameter of at least 5 microns and less than or equal to 3 millimeters, and
wherein the composite fiber has an aspect ratio of at least 100 to 1.
2 . The composite fiber of claim 1 , wherein the fiber is a multi-stranded fiber.
3 . The composite fiber of claim 1 , wherein the fiber is a single-stranded fiber.
4 . The composite fiber of claim 1 , wherein the fiber comprises a polyester, a polyamide, and/or cotton.
5 . The composite fiber of claim 1 , wherein the polymer aerogel material comprises polyimide.
6 . The composite fiber of claim 1 , wherein the mass fraction of polymer aerogel in the composite is greater than 1%.
7 . The composite fiber of claim 1 , wherein the composite fiber is incorporated into a textile.
8 . The composite fiber of claim 1 , wherein the composite can be woven and/or knit into a textile.
9 . The composite fiber of claim 1 , wherein the polymer aerogel material is substantially continuous along a length of the composite fiber.
10 . The composite fiber of claim 1 , wherein the composite exhibits a thermal conductivity of less than 80 mW/m-K when the composite is laid up into a mat and measured by a Calibrated Hot Plate (CHP) method.
11 . The composite fiber of claim 1 , wherein the composite exhibits a Brunauer-Emmett-Teller (BET) surface area of greater than 10 m 2 /g.
12 . The composite fiber of claim 1 , wherein the composite may be laundered according to the AATCC LP1 standard for home laundering, and the laundered material exhibits a BET surface area of at least 10 m 2 /g.
13 . The composite fiber of claim 1 , wherein the mass fraction of polymer aerogel in the composite fiber is greater than 10%.
14 . A textile comprising the composite fiber of claim 1 , wherein the textile passes the FAR 25.853 flammability testing.
15 . A textile comprising the composite fiber of claim 1 , wherein the textile passes at least one of the following flammability tests: ASTM D6413, 16 CFR 1615, CPAI-84, ASTM D1230.