Fortron PPS Product Brochure (B240) - Hi Polymers

Fortron ®
Polyphenylene sulphide (PPS)
Change
Fig. 33 · Change in mechanical properties and
dimensions of tensile test bars; testing in the
following conditions: 4 days in an autoclave
in methyl-tert.-butyl ether at 100°C, test
specimens produced from Fortron 1140L4
120
%
100
80
60
40
20
0
0 4 days in autoclave
Tensile
strength
Tensile
modulus
Thickness Length Weight
of the tensile test bar
Change
Fig. 34 · Change in mechanical properties and
dimensions of tensile test bars; testing in the
following conditions: 90 and 180 days in an
anti-freeze (Genantin ® /water mixture in the
ratio 3:1) at 120°C, test specimens produced
from Fortron 1140L4
120
%
100
80
60
40
20
0
0 90 days 180 days
Tensile
strength
Tensile
modulus
Thickness Length Weight
of the tensile test bar
Fig. 35 · Change in mechanical properties and dimensions of tensile test bars; testing in the following
conditions: 4 days in an autoclave in an antifreeze (glycol water mixture in the ratio 1:1) at 150°C,
test specimens produced from Fortron 1140L4 (A) and PA 46 with 30 % glass fibres, heat stabilized (B)
120
%
100
0 4 days in autoclave
120
%
100
0 4 days in autoclave
Change
80
60
40
80
60
40
20
20
0
Tensile
strength
Tensile
modulus
Thickness Length Weight
of the tensile test bar
0
Tensile
strength
Tensile
modulus
Thickness Length Weight
of the tensile test bar
A: Fortron 1140L4 B: PA 46 with 30 % glass fibres, heat-stabilized
The usual chemical resistance test involving immersion
of test bars in glass flasks with reflux condensers
is increasingly being replaced in industry by shortterm
tests. In these short-term tests in an autoclave
testing is carried out at higher temperatures. It is thus
possible to utilize the time-lapse effect of raising the
temperature.
Rule of thumb: A 10°C rise in temperature doubles
the reaction rate of chemical processes. Results of the
short-term tests are given in table 6 and indicated
by*).
A detailed summary of the results of chemical resistance
tests with Fortron grades is provided in the
Fortron Chemical Resistance Guide Version 3.0 [10].
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