TRANSPARENT STRETCHED ACRYLIC SHEETS FOR AIRCRAFT WINDOW SYSTEMS HAVING CONTROLLED SOLAR TRANSMITTANCE PROPERTIES
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app pub date -
Nov 12, 2008
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Mar 8, 2006
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Abandoned
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Abstract
A biaxially stretched transparent acrylic sheet having a controlled solar energy transmittance properties for aircraft window systems is described. The biaxially stretched transparent acrylic sheet includes a thermoplastic acrylic polymer, and from about 0.003 percent by weight to about 0.1 percent by weight of an IR absorbing material, the weight percentage based on the a total weight of the acrylic polymer and the IR absorbing material. The IR absorbing material preferentially absorbs energy having wavelengths from about 700 nm to about 1100 nm. The IR absorbing material is selected from the group consisting of perylene based dyes, nanoparticle hexaboride based IR absorbers, and mixtures thereof.
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