TECHNICAL DATA
SentryGlas Intrusion Resistant Composite is comprised of 15-30 mil polyvinyl butyral (PVB) sheeting and 7-10 mil polyester (PET) film, both of which are proprietary to DuPont and custom manufactured specifically for this application. The PET film is coated with a proprietary polysiloxane hard coating which provides superior abrasion resistance.
Properties of SentryGlas®
Polyester Film Thickness, mils 7

Optical Quality, As Laminated Haze, %0.3

Abrasion Resistance,(1) Taber Haze Increase, %1.7

Adhesion of Abrasion Resistant Coating,
Coating Removed by 3M #670 Tape, %

- As Laminated0

- After Boiling 6 Hours0

- After 250 MJ/m(1)
Xenon Arc Exposure(2)0

Weathering Performance, After 250 MJ/ml
Xenon Arc Exposure

- Film Haze Level, %0.5
- Abrasion Resistance,(1)
Taber Haze Incr., %2.0

Impact Resistance,(3)
50% Mean Penetration
Energy, ft.-lb.
- Glass Side Impact341 (4)
680(5)
- Plastic Side Impact350(4)
860(5)

Solvent Resistance(6)

MethanolNo Effect
TolueneNo Effect
AcetoneNo Effect
MEKNo Effect
Meth. Chl.No Effect
GasolineNo Effect

NOTES:

(1)Taber Abrasion Test, ASTM D-1044 - 85;ANSI Z-26.1 - 1983 Test 34. (2)GIass side toward the arc. (3)22-lb, 8" diameter headform was dropped on 2'x 3' flat glazing from various heights. Energy level where the probability of penetration was 50% was computed by the "staircase" method. (4)SentryGlas® Type 157. (5)SentryGlas® Type 307. (6)All samples were abraded with the Taber Abraser (ANSI Z-26, 1-83 Test 34) and stressed to simulate actual end use conditions. The abraded area was then exposed to solvents, wiped clean, and graded.

 

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