Specialty Fabrics Review December 2021 - 46

at outside temperatures ranging
from 115 to minus 40 degrees.
Eureka! says its thermal liner
system, released six years ago, is
considered superior to every other
system in the industry in terms of
logistics and cost. " There's no mumbo
jumbo, " says Nelson. " Just good design
and quality testing. "
Eureka!'s thermal liner system
There's no
mumbo jumbo.
Just good
design and
quality testing.
Trent Nelson
Eureka! Military, Johnson
Outdoors Gear Inc.
is available for the company's RDS
(rapid deployable system) and MGPTS
(modular general purpose tent system)
tents, and can be customized for other
configurations. According to Nelson,
while there is some demand for
thermal management systems on the
commercial side, the average camper's
usage may not justify the cost.
FOCUSING ON THE
HUMAN BODY
A number of textile technologies
have attempted to harness the infrared
radiation emitted by the human
body to manage thermal comfort
in apparel, bedding and soft home
textiles. A concept called MetaCool,
first reported in Science magazine in
2019 by scientists at the University of
Maryland, utilizes a shape-shifting
textile to gate this radiation, cooling
or warming the wearer.
The textile technology, created by
professor of chemistry and biochemistry
YuHuang Wang and physics professor
Min Ouyang, combines a yarn
made from cellulose triacetate with
a carbon nanotube coating.
While the triacetate in the fiber
is hydrophobic, the cellulose is
hydrophilic. This opposition causes
the fibers to tighten and twist when
exposed to moisture (sweat), opening
pores in the textile that release heat.
When the textile dries and cools,
the fibers relax and the pores close,
conserving heat.
46 SPECIALTY FABRICS REVIEW / December 2021
The carbon nanotube coating,
which possesses excellent optical
properties, modulates the amount
of infrared radiation via resonant
electromagnetic coupling, amplifying
the thermoregulating effect to create
a true bidirectional thermal textile.
With a U.S. patent and pending
international patent applications in
place, the project is now established as
Coolwave Dynamics LLC. According
to Wang, " We are just at the beginning.
But we are seeing a lot of interest, from
professional athletes to housewives and
high-school student entrepreneurs. "
The Coolwave technology can be
utilized in woven as well as in knitted
structures; current opportunities
include socks and footwear, as well as
textiles for athletes, infants and others
who require autonomous temperature
regulation. " The human body is our
major concern, " says Wang. " Our
mechanism is a different approach
to thermal regulation not found in
textile materials.
" The beauty of our technology
is that it will be very scalable, and
ultimately very affordable, hopefully, "
Wang concludes. The minute amount
of carbon nanotubes added during the
manufacturing process " are not a big
deal in terms of cost. "
Wang points out that enabling
inhabitants to maintain a comfortable
personal climate through their apparel
creates the opportunity to save energy
by reducing the heating or cooling
levels of an entire building.
Debra Cobb is a freelance writer with extensive
experience writing about the textile industry.
She is based in North Carolina.
Want more? We have it!
Search " thermal management " at
www.SpecialtyFabricsReview.com
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Specialty Fabrics Review December 2021

Table of Contents for the Digital Edition of Specialty Fabrics Review December 2021

Specialty Fabrics Review December 2021 - Cover1
Specialty Fabrics Review December 2021 - Cover2
Specialty Fabrics Review December 2021 - 1
Specialty Fabrics Review December 2021 - 2
Specialty Fabrics Review December 2021 - 3
Specialty Fabrics Review December 2021 - 4
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