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MIL-HDBK-1013/12
<1> Exposed to High Humidity, High
Traffic, or Salt Air? If a
Start
polycarbonate cross-section is
exposed to conditions of high
humidity, high traffic, or salt air,
proceed to <2>. Otherwise,
proceed to <3>.
<2> Consider Hard Coating. Hard
<1> Exposed
to High Humidity, High
No
coating the surface of
polycarbonate can protect it from
Traffic, or Salt Air?
abrasion and contaminant
penetration. Proceed to <3>.
<3> Exposed to Extreme
Yes
Temperatures? If a polycarbonate
cross-section is exposed to
<2> Consider
temperature differentials in excess
Hard Coating
of 70F then proceed to <4>.
Otherwise, return to Figure 30.
<4> Is Thickness Greater Than 5/8"?
For thicknesses of polycarbonate
greater than 5/8 inch exposed to
<3> Exposed
No
extreme temperatures, proceed to
to Extreme
<5>. Otherwise, return to Figure
Temperatures?
30.
<5> Consider Air-Gap System.
Yes
Extreme temperature differentials
and large thicknesses can produce
bending stresses in polycarbonate
<4>
that will lead to delamination. An
Is Thickness
No
air-gap will reduce the temperature
Greater Than
differential through the
5/8"?
polycarbonate material. Return to
Figure 30.
Yes
<5> Consider
Air-Gap System
Stop
Figure 32
Process Chart and Description:
Polycarbonate Environmental Analysis Procedure
8.4
Laminated Glass Environmental Analysis Procedure.  This
procedure provides guidance for cold temperature applications of
laminated glass.  Figure 33 presents the process chart and
description for the laminated glass environmental analysis
procedure.
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