Stabilized and carbonaceous expanded fibers
AssigneeThe Dow Chemical Company
InventorsKyung W. Suh, William G. Stobby, Francis P. McCullough, Jr.
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Abstract
There is provided a non-flammable expanded fiber comprising carbonaceous polymeric substantially irreversibly heat set fiber having an LOI value of greater than 40, and the fibrous structures thereof. Also, provided are stabilized expanded polymeric fibers.
Claims7
A fibrous structure comprising a multiplicity of non-flammable expanded non-graphitic carbonaceous polymeric asymmetric porous hollow fibers, said fibers having an LOI value greater than 40, a char percentage value greater than 65, a thermal conductivity less than 1 BTU ft/hr ft.sup.2 .degree.F, an elemental carbon content of less than 85 percent, said fibers being expanded at least 5% greater than the fiber being non-expanded.
Dependencies are inferred from the claim text.