aerogel

AEROGEL INSULATION
PRESENTED BY :
SALMANE ZAGHOUD
HAMZA OUZAANI
PROF : AMMAR EL MORABET
Summary
I.
InTRODUCTION
II.
AEROGEL’s definition
III. How it’s made
IV. Chemical and Physical Properties of
Aerogel
V. Applications of Aerogel
VI. CONCLUSION.
1-INTRODUCTION
Nowadays everyone is looking for
comfort in housing by providing houses
that are able to adapt to all seasons
and conditions, and among the
solutions brought by researchers in the
field of construction we find Aerogel,
which saved the construction
companies from the problem of
thermic transfer.
2-AEROGEL’s définitiOn
Aerogel are the world's lightest solid
materials, composed of up to 99.98% air by
volume. Aerogels are a diverse class of
amazing materials with properties unlike
anything else. Transparent super insulating
silica aerogels exhibit the lowest thermal
conductivity of any solid known.
3-The making of
Aerogel
In general terms, aerogel is created by drying
a gel, in a high temperature environment.
First the gel is created in a solution, and then
the liquid component is removed via
supercritical drying, which removes liquid
slowly in order to maintain the structural
shape. This liquid component is then replaced
by air. Aerogel was first created in 1931 by
Samuel Stephens Kistler, with carbon aerogels
first introduced in the 1980’s.
4-Chemical and
Physical Properties of
Aerogel
Low mean free path of diffusion
High specific surface area (for a nonpowder material)
Low thermal conductivity
Low sound speed
Low refractive index
Low dielectric constant
5-Applications of
Aerogel
*Wetsuits
*Firefighter suits
*Skylights
*Windows
*rockets
*Paints
*Cosmetics
*Nuclear weapons
6-CONCLUSION
In the end, we cannot afford the
forces that the Aerogel
innovation has made great
strides in the field of
construction and we hope that
other innovations such as aerogel
to advance this field.