Eastman Saflex® DG41 Structural PVB interlayer

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Eastman Saflex® DG41 Structural PVB interlayer
Categories:	Polymer; Film
Material Notes:	Saflex® Structural interlayer is a tough polyvinyl butyral interlayer (PVB) designed for applications where interlayer rigidity and high glass adhesion requirements are not met with standard glazing interlayers. Saflex Structural provides superior structural capacity compared with standard PVB interlayers. In properly designed systems, Saflex Structural is capable of keeping glass intact at high and low temperatures after impact and under load. It’s formulated to provide robust resistance to delamination and excellent edge stability and is compatible with visibly reflective coatings and low emissivity coatings. Post breakage safety Higher load capability sustains safety after breakage. Superior edge stability Enhances delamination resistance Enhanced unit strength Facilitates over-sized glass design Enhanced interlayer strength Enables thinner glass to reduce weight & cost Superwide 3.2 m width Improves throughput and reduces costs Vanceva® color compatibility Creates thousands of color opportunities Information provided by Eastman
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Physical Properties	Original Value	Comments

Density	1.08 g/cc	ASTM D792

Mechanical Properties	Original Value	Comments
Hardness, Shore D	52	Cut/stacked to 12.5 mm; ASTM D2240
Tensile Strength at Break	213 MPa	ASTM D638
Elongation at Break	190 %	JIS 56771
Poissons Ratio	0.476	50% RH; ASTM D638

Thermal Properties	Original Value	Comments
CTE, linear	155 µm/m-°C @Temperature -40.0 - 30.0 °C	ASTM D831
Specific Heat Capacity	2.248 J/g-°C @Temperature 28.0 - 80.0 °C	ASTM E1269
Thermal Conductivity	0.226 W/m-K	ASTM F5930

Optical Properties	Original Value	Comments
Transmission, Visible	88 %	Solar, 2.1-mm clear; NFRC 300
	89 %	Visible, 2.1-mm clear; NFRC 300

Descriptive Properties
Color	Clear
UV screening	>99%	280-380 nm, 2.1-mm clear

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PEATM5030 / 222224

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