Insulation R Values: polytetrafluoroethylene
Insulation R-values and thermal conductivity data from NIST SRD 81 — covers fiberglass, foam, cellulose, mineral wool, and other building insulation materials
| material id | record id | date | delta t (F) | delta x (in) | density (lb/ft3) | description | form | k w mk (W/mK) | manufacturer | material | mean temp (F) | r value per inch (ft2hF/BTU/in) | rsi per inch (m2K/W/in) | test method | trade name | uncertainty |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| polytetrafluoroethylene | 1582 | 2/5/1965 | 10.76 | 0.2575 | 134.6 | ¼ in. | Block | 1.7602 | E.I. du Pont de Nemours & Co. | Polytetrafluoroethylene | 129.88 | 0.081938 | 0.01443 | ASTM C 177 | Teflon® | 1 |
| polytetrafluoroethylene | 1583 | 2/8/1965 | 10.48 | 0.2558 | 134.5 | ¼ in. | Block | 1.7748 | E.I. du Pont de Nemours & Co. | Polytetrafluoroethylene | 62.7 | 0.081264 | 0.014311 | ASTM C 177 | Teflon® | 1 |
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