| abstract |
To improve fire resistance, a fire resistant agentnis included in a carbon fiber felt constituting a carbonnfiber aggregate, and a binder resin for bonding the carbonnfiber constituting this aggregate. The fire resistantnagent comprises a phosphorus-containing compound, anboron-containing compound, a silicone compound, or thenlike. The proportion of the fire resistant agent is aboutn1 to 30 parts by weight relative to 100 parts by weightnof the carbon fiber. The obtained carbon fiber felt andna heat insulating material formed by the felt are excellentnin fire resistance. |