Installation Instructions

SABIC Innovative Plastics 21
Temperature Resistance
The heat build-up of glazing materials can be seen as a
function of the solar energy absorption of the glazing
material and the solar intensity.
In areas with intense sun radiation, and when high
energy absorbing tinted glazing is installed, heat build-
up of the glazing can be considerable. Calculations and
actual measurements on installed Lexan Thermoclear
sheet in several projects throughout Europe have shown
that sheet surface temperatures of 100°C can exist.
Dimensional Stability
Lexan Thermoclear sheet is characterised by its excellent
retention of impact strength and stiffness at elevated
temperatures, even over an extended period. Lexan
Thermoclear sheet retains 85% of its room temperature
exural modulus at 80°C.
Continuous use Temperature
UL Ratings
The U.S.A. Underwriters Laboratories continuous-
use temperature rating can be considered as a
reliable indicator of a thermoplastic’s long-term high
temperature performance. The most important
properties of the thermoplastic are tested at various
temperatures. Test results are extrapolated over a
period of 10 years and no property may lose more
than 50% of its original value. Table 7 outlines the UL-
continuous use temperatures of typical thermoplastic
glazing materials.
Various Properties
8. Dimensional stability.
Flexural modulus in
N/mm
2
x100
Table 7: UL Temperature Ratings UL746B
Underwriters Laboratories
Continuous-use
Temperature
Rating
Softening
Temperature
Lexan
polycarbonate
212°F 293°F
Acrylic 122°F 212°F
PVC 122°F 158°F
Table 8: Weight
Lexan Thermoclear
sheet
Thickness
inch
Weight
lbs/ft2
0,16 0,164
0,18 0,205
0,24 0,266
0,31 0,307
0,39 0,348 - 0,410
0,63 0,553 - 0,597
0,79 0,614 - 0,676
0,98 0,696 - 0,717
1,26 0,778
1,38 0,819
1,57 0,881
1,77 0,922
1,97 0,983
Lexan Thermoclick sheet
1,57 0,819
Lexan Thermopanel sheet
1,18 0,737
Lexan Thermoclear sheet has a continues-use
temperature of 100°C. At the other end of the scale
the minimum continues-use temperature has been set
at -40°C. However, using Lexan Thermoclear sheet at
lower temperatures is possible since the embrittlement
temperature is as low as -110°C.
Fire Performance
Lexan Thermoclear sheet has good re behaviour
characteristics, and receives high ratings in several major
European re performance tests including EN13501.
More detailed information is available from your local
SABIC Innovative Plastics Service Centre or authorised
dealer.
Weight Factors
Lexan Thermoclear sheet is an ideal replacement
for the more traditional glazing materials. It is safe
and easy to handle, cut and install and is virtually
unbreakable. Its light weight offers signicant savings
in terms of transportation, handling and installation.
When compared with 6 mm wired glass, 10 mm Lexan
Thermoclear sheet offers weight savings of more than
85%.
Lexan Thermoclear sheet has shown in many
applications that its lightness and ease of handling have
contributed to signicant savings in overall installation
costs.
Sound Insulation
The sound insulation characteristics of a material are
largely pre-determined by its stiffness, mass and physical
construction. In accordance with DIN 52210-75, the
maximum obtainable sound transmission class for a
particular thickness of Lexan Thermoclear sheet is listed
below.
30
25
20
15
10
5
0
Temperature C
o
-25 0 25 50 75 100
Lexan
PVC PMMA
Flexural modulus in N/mm x 100
2
8