ARTICLES HAVING ENHANCED REVERSIBLE THERMAL PROPERTIES AND ENHANCED MOISTURE WICKING PROPERTIES TO CONTROL HOT FLASHES
A coated article for providing a phased response to rapid temperature changes, comprises a substrate and a coating disposed on a portion of the substrate. The coating comprises a polymeric material, a first temperature regulating material having a transition temperature between 22° C. and 50° C. and disposed within a first plurality of microcapsules, and a second temperature regulating material having a transition temperature between 25° C. and 45° C. and disposed within a second plurality of microcapsules. The first temperature regulating material and the second temperature regulating material are dispersed in the polymeric material. The coating includes a plurality of regions of discontinuity formed by the coating that create exposed portions of the substrate to provide improved flexibility and air permeability to the coated article and wherein the coating provides a buffered response to rapid temperature changes.
1 . A coated article for providing a phased response to rapid temperature changes, comprising:
a substrate;
a coating disposed on a portion of the substrate, the coating comprising:
a polymeric material;
a first temperature regulating material having a transition temperature between 22° C. and 50° C. and disposed within a first plurality of microcapsules; and
a second temperature regulating material having a transition temperature between 25° C. and 45° C. and disposed within a second plurality of microcapsules;
wherein the first temperature regulating material and the second temperature regulating material are dispersed in the polymeric material; and
a plurality of regions of discontinuity formed by the coating, the plurality of regions of discontinuity creating exposed portions of the substrate to provide improved flexibility and air permeability to the coated article;
wherein the coating provides a buffered response to rapid temperature changes.
2 . The coated article of claim 1 , further comprising a third temperature regulating material having a transition temperature between 30° C. and 45° C. and disposed within a third plurality of microcapsules.
3 . The coated article of claim 1 , wherein the coating comprises between 15% and 25% of the first temperature regulating material.
4 . The coated article of claim 1 , wherein the coating comprises between 15% and 50% of the first temperature regulating material.
5 . The coated article of claim 1 , wherein the regions of discontinuity are distributed substantially uniformly across the surface of the substrate.
6 . The coated article of claim 1 , wherein the coating covers up to 99 percent of the surface of the substrate.
7 . The coated article of claim 1 , wherein the coating covers between 50 and 90 percent of the surface of the substrate.
8 . The coated article of claim 1 , wherein the coating is formed in a pattern selected from the group consisting of a crisscross pattern, a grid pattern, a honeycomb pattern, or a randomly generated pattern.
9 . The coated article of claim 1 wherein at least one region of discontinuity has a first shape and at least one region of discontinuity has a second shape.
10 . The coated article of claim 1 , wherein the plurality of regions of discontinuity have shapes that are selected from the group consisting of circular, half-circular, diamond-shaped, hexagonal, multi-lobal, octagonal, oval, pentagonal, rectangular, square-shaped, star-shaped, trapezoidal, triangular, and wedge-shaped.
11 . The coated article of claim 1 , wherein the plurality of regions of discontinuity have sizes ranging from 1 mm 2 to 10 mm 2 .
12 . The coated article of claim 1 , wherein the plurality of regions of discontinuity have sizes ranging from 1 mm 2 to 4 mm 2 .
13 . The coated article of claim 1 , wherein the substrate is selected from the group consisting of a fabric, film, foam, or leather.
14 . The coated article of claim 1 , wherein the temperature regulating material comprises an absorbent material impregnated with a phase change material.
15 . The coated article of claim 1 , wherein the temperature regulating material comprises a solid/solid phase change material.
16 . The coated article of claim 1 , wherein the temperature regulating material comprises a polymeric phase change material.
17 . A fabric providing a phased response to rapid temperature changes, comprising:
a first surface;
a coating disposed on a portion of the first surface, the coating comprising:
a first temperature regulating material having a transition temperature between 22° C. and 50° C. and disposed within a first region of the coating, and
a second temperature regulating material having a transition temperature between 25° C. and 45° C. and disposed within a second region of the coating,
wherein the first temperature regulating material and the second temperature regulating material are dispersed in a polymeric material;
a plurality of regions of discontinuity formed by the coating, the plurality of regions of discontinuity creating exposed portions of the first surface to provide improved flexibility and air permeability to the coated article;
wherein the coating provides a buffered response to rapid temperature changes.
18 . The fabric of claim 17 , wherein the first region of the coating and the second region of the coating are contiguous.
19 . The fabric of claim 17 , wherein the first region of the coating and the second region of the coating are adjacent to each other on the first surface of the fabric.
20 . The fabric of claim 17 , wherein the first region of the coating is layered with the second region of the coating.
21 . The fabric of claim 17 , wherein the first region of the coating is layered on top of the second region of the coating.
22 . The fabric of claim 17 , further comprising a third temperature regulating material having a transition temperature between 30° C. and 45° C. and disposed within a third region of the coating.
23 . A coated article for providing a phased response to rapid temperature changes, comprising:
a substrate;
a coating disposed on a portion of the substrate, the coating comprising:
a polymeric material,
a temperature regulating material having a transition temperature between 22° C. and 50° C. and disposed within a plurality of microcapsules;
wherein the temperature regulating material is dispersed in the polymeric material; and
a plurality of regions of discontinuity formed by the coating, the plurality of regions of discontinuity creating exposed portions of the substrate to provide improved flexibility and air permeability to the coated article;
wherein the coating provides a buffered response to rapid temperature changes.
24 . A method of manufacturing a fabric, comprising:
coating the fabric with a first temperature regulating material having a transition temperature between 22° C. and 50° C., wherein the first temperature regulating material forms a first pattern on the fabric;
coating the fabric with a second temperature regulating material having a transition temperature between 25° C. and 45° C., wherein the second temperature regulating material forms a second pattern on the fabric;
wherein the first pattern and the second pattern form regions of discontinuity that create exposed portions of the fabric to provide improved flexibility and air permeability to the coated article; and
wherein the first and second temperature regulating materials provide a buffered response to rapid temperature changes.
25 . The method of claim 24 , further comprising coating the fabric with a third temperature regulating material having a transition temperature between 30° C. and 45° C., wherein the third temperature regulating material forms a third pattern on the fabric.