Thermally Insulative Expanded Polytetrafluoroethylene Articles
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United States of America Patent
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Issued Date -
Jul 20, 2017
app pub date -
Mar 29, 2017
filing date -
Dec 19, 2013
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Abstract
Thermally insulative materials and articles are described. In one embodiment, the thermally insulative material comprises a polymer matrix, aerogel particles and expanded microspheres, wherein the aerogel particles are present in an amount of 30% by weight or greater, the polymer matrix is present in an amount of greater than or equal to 20% by weight and the expanded microspheres are present in an amount of 0.5% to 15% by weight, the percentages being based on the total weight of the polymer matrix, the aerogel particles and the expanded microspheres; and wherein the thermal conductivity of the thermally insulative material is less than 40 mW/m K at atmospheric conditions.
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