Isotropic pitch-based materials for thermal insulation

Compositions – Heat or sound insulating

Reexamination Certificate

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C428S293400, C501S099000, C501S095100, C501S095200

Reexamination Certificate

active

07150837

ABSTRACT:
Insulation materials suited to high temperature applications, such as the insulation of furnaces, are formed from a mixture of pitch carbon fibers, such as isotropic pitch carbon fibers, and a binder comprising a solution of sugar in water. The sugar solution is preferably at a concentration of from 20–60% sucrose to yield a low density material having high flexural strength and low thermal conductivity when carbonized to a temperature of about 1800° C.

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C.D. Reynolds, “A High-Strength Thermal Insulating Material” 19thNational SAMPE Symposium, 1972, pp. 528-533.

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