DuPont SGP Interlayer

sentryglas interlayer

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Definition

DuPont SGP Interlayer, SentryGlas Interlayer, or SentryGlas Plus Interlayer is a kind of ionoplast interlayer initially designed for hurricane glazing applications in Florida, the United States by DuPont. Now owned by Kuraray.

Characteristics

 

Top-quality material:

It is made of high-performance ionomer resin, without any plasticizers.

High Strength:

100 times stiffer and 5 times stronger than PVB interlayers.

 

Lighter Weight:

SentryGlas interlayer bears a higher load than PVB laminate, achieving the same loads by the thinner glass.

Durability:

Exceptional stability, and has no edge defects on 20 years applications.

High Clarity:

DuPont SGP has only a 1.5 yellowness index, while ordinary PVB with 6 to 12 which is 4 to 8 times than SGP.

 

Compatibility:

Superior compatibility with approved sealants, ceramic frit coatings, glass coatings, metal, fabric, wire, mesh, etc.

Higher Performance:

Excellent salt-spray performance, and zero defects even after 3000 hours test.

Safety:

safe breakage and fragment retention after glass broken

Security:

enhanced impact performance in hurricane environment, and security from a variety of threats.

uv light

 

UV Control:

DuPont SGP interlayer can block over 99% UV radiation.

SGP Interlayer Datasheet

PDF DOWNLOAD

SGP Interlayer Technical Manual for Structural Engineers

 

SentryGlas Interlayer Tests

 

Florida 20-year Test:

SentryGlas samples are fully exposed to the Florida climate for 20 years, without any signs of weathering, visible moisture intrusion, or delamination effects.

florida test

 

Weathering Test:

specimens exposed outside for 3000 hours in South Florida, no visible bubbles and delamination.

 

Edge Stability Test:

SGP glass samples go through the salt spray fog test continuously for 3000 hours, the glasses remain unchanged in terms of transparency, edge cloudiness, or delamination.

 

Sealant Compatibility Test:

SGP specimens were tested under accelerated QUV, UV radiation, high-temperature, and high humidity circumstances without visible delamination or other defects.

 

High-Temperature Bake Test:

SentryGlas samples withstand an environment of 100 degrees at least for 16 hours. No air bubbles formation appears inside the 12mm from the glass edge.

 

Compatibility with Ceramic Frit Coatings:

76 Bake Test, SentryGlas shows no visual defects found, such as coating, bubble, delamination, or any other defects.

ceramic frit coatings test

 

Compatibility with Solar Shading or Glass Coatings:

by placing SentryGlas interlayer directly in contact with AGC, Cardinal, Guardian, PPG double and triple silver Low-e glass. There is no moisture or salts spread to Low-e coatings.

 

Impact Test:

Pendulum impact by using shot bags to evaluate breakage characteristics.

Ball-drop test by using a steel ball drops from a specific height onto the glass to determine the impact resistance.

Missile impacts are conducted using timber missiles to impact the glass at different speeds. Anti-intrusion tests, bomb-blast and BRG tests, etc.

 

Post-glass Breakage Test:

by define, the fragments state, scale, and glass pattern of broken glass. It is less quantitative than pre-glass breakage methods, the tests still provide valuable information about the post-breakage strength and stiffness of the SentryGlas interlayer.

 

Glass Retention or Adhesion Test:

SGP glass samples performed well at low temperature -12 degrees. When subjected to 5 load cycles of 4.4 kN and little glass loss was found. Even after broken, there are no widespread adhesion problems appear.

 

Toughness Tests:

SentryGlas interlayer glass shows excellent performance over a broad temperature range than PVB interlayer.

 

Ballistics-resistant Test:

According to Indoor UL752, NIJ 0108.01, and EN1063 relative security standards, samples achieve the desired level of ballistics resistance.

 

Blast Performance: Shock Tube Test & Area Testing

 

Fire performance Test:

the SentryGlas samples comply with CPSC 16 CFR 1201 and show superior performance in terms of flame spread and flammability in the fire test.

 

Applications

 

Security required places:

hurricane, typhoon, or storm glazing

 

Safety required places:

transportation, architectural and structural glazing

glass canopy

 

Exterior glazing:

enclosures, podiums, canopies

stair tread

 

Point-support system:

facades, curtain walls, skylights

sentryglas high strength

 

Exposed edge glass:

balcony, balustrade, handrail system

glass balcony
 

 

Load bearing system:

stair tread, stairs, floor, walkways, sightseeing bridge

glass bridge

 

Forced entry places:

governmental buildings, bank, prison, museums, relic showcase

Conclusion

As the only structural interlayer that can be combined with the laminated glass, DuPont SGP interlayer provides a new solution for the architects and designers.

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