Mankind has
discovered window glass at least twice. There is evidence that this material,
although of much lower quality, was used by the ancient Romans, but after the
fall of Rome, the technology was lost. Therefore, for a long time, people did
with alternative solutions, including closing windows with wooden shutters, and
also inserted oiled paper, pieces of fabric and even bull bubbles into the
windows.
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| Window Glass |
At first the
window panes were small. Small squares were inserted into the binding, and so
glazed windows were obtained. Only in the 18th century did people learn how to
make large-sized flat glass. Over the following centuries, technology was
seriously improved. And scientific and technological progress finally resolved
the issue of glazing. As a result, window glass retained only one property from
its former elitism - fragility. However, this drawback is completely eliminated
in modern multilayer products that do not break and do not shatter into
fragments. At the same time, the cost of such window panes is relatively high,
which is quite justified.
Modern window
panes are affordable, although they have decent consumer properties.
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| Triplex Window Glass |
The main
characteristics of window glass:
1) a density of
the order of 2.5 kg/m²; strength - 1000 N/mm² (high resistance to pressure);
2) a relatively
small break-up strength (40 MPa, or up to 200 MPa for tempered glass);
3) elasticity,
not susceptibility to deformation up to failure; low thermal conductivity, the
ability to withstand thermal shock.
There are also
special energy-saving products with a low emission surface. Among other options
are hardened, armored, reflex, film (decorative) modifications.
