CPC D06N 3/0059 (2013.01) [A41D 31/065 (2019.02); C08J 9/0061 (2013.01); C08J 9/32 (2013.01); D06N 3/0068 (2013.01); D06N 3/0088 (2013.01); D06N 3/042 (2013.01); D06N 3/14 (2013.01); C08J 2203/22 (2013.01); C08J 2205/044 (2013.01); C08J 2205/052 (2013.01); C08J 2375/04 (2013.01); C08J 2475/04 (2013.01); D06N 2209/025 (2013.01); D06N 2209/065 (2013.01); D06N 2211/063 (2013.01); D06N 2211/106 (2013.01); D06N 2211/28 (2013.01); D10B 2321/08 (2013.01); D10B 2331/10 (2013.01); D10B 2401/041 (2013.01); D10B 2501/043 (2013.01)] | 10 Claims |
1. A closed porous composite material, comprising a plurality of closed cavities each enclosed in one of a plurality of polymer walls,
wherein a size range of the plurality of closed cavities is from 20 μm to 800 μm,
and a ratio of a total volume of the plurality of closed cavities to a total volume of the plurality of polymer walls is greater than 16,
and a thickness of the polymer walls is from 0.01 μm to 5 μm,
wherein each polymer wall comprises a thermoplastic or thermosetting polymer on a first side facing an interior of the closed cavity that the polymer wall encloses and a water dispersing resin away from the first side, and
a thermal conductivity of the closed porous composite material is less than 0.030 w/m.k.
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