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| equipment:storage [2019/06/07 17:46] – mcmaster | equipment:storage [2019/07/05 18:23] – mcmaster | ||
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| - | * Too low density to be useful | ||
| - | * Open cell | ||
| - | * 1.4 lbs. cu. ft | ||
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| 14:58:56 i think closed cell disintegrates much slower but gets ' | 14:58:56 i think closed cell disintegrates much slower but gets ' | ||
| </ | </ | ||
| + | |||
| + | < | ||
| + | https:// | ||
| + | |||
| + | The open cell foam is very likely polyurethane foam†, which degrades into a powder | ||
| + | (clumps if compressed) primarily via hydrolysis / photo-oxidation depending on the type¹ | ||
| + | and (assuming polyester-based PU) releases mainly adipic acid, which is corrosive². | ||
| + | |||
| + | †) general consideration of properties, and a few very rough tests such as: | ||
| + | heating (chars: thermoset polymer), comparison against known PU foam; with supportive results. | ||
| + | |||
| + | https:// | ||
| + | https:// | ||
| + | </ | ||
| + | |||
| + | |||
| + | == Brands == | ||
| + | |||
| + | https:// | ||
| + | * Too low density to be useful | ||
| + | * Open cell | ||
| + | * Density: 1.4 lbs. cu. ft | ||
| + | * Tensile Strength (PSI): 13 | ||
| + | |||
| + | https:// | ||
| + | * Advertises for chips | ||
| + | * Closed cell | ||
| + | * Density: 1.8 pcf (28.8 kg/m3) | ||
| + | * Tensile Strength: 31 psi (215kPa) | ||
| + | |||
| + | https:// | ||
| + | * "For Use With: Pin Insertion" | ||
| + | * Density: 50kg/m³ | ||
| + | * Tensile Strength: 515KPa | ||
| ===== Density ===== | ===== Density ===== | ||