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PC glazing offers blast protection in construction

Newly launched polycarbonate-based laminate composites provide blast resistance that exceeds current anti-terrorism force-protection standards, including those with the highest defined levels of pressure loads and shock waves.

Newly launched polycarbonate-based laminate composites provide blast resistance that exceeds current anti-terrorism force-protection standards, including those with the highest defined levels of pressure loads and shock waves. The Makrolon Hygard EX blast-resistant products are supplied by Bayer MaterialScience LLC business Sheffield Plastics, and will debut at the AIA Expo (June 10-12, Miami). The company says that compared to laminated glass, these PC-based laminate compositions can withstand exterior blasts without splintering on the interior face of the material, which eliminates risks associated with glass fragments being projected into a room in blast conditions. In addition, they do not spall or "spider-web" in ballistic or blast conditions, leaving occupants with good visibility through the glazing after impact events.

The materials feature ultraviolet (UV) radiation protection, without, reportedly, compromising the sheet's optical quality, making them suitable for sky-lighting and other overhead applications. The company says that unlike glass and acrylic, which require thermal pre-forming, the material can be formed in place for more cost-effective curved glazing installations. At the same event, Sheffield plans to display stadium roofing applications made from its Makrolon Multiwall sheet. Available in several new configurations, the materials can reduce substructure costs through their combination of strength and low weight. [email protected]

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