FIRE SPREAD PREVENTION MEMBER AND FIRE SPREAD SUPPRESSION METHOD

摘要

To provide a fire spread prevention member having good flexibility while having a high expansion ratio at the time of heating and sufficient mechanical strength after heating, and a method of using this fire spread prevention member to suppress fire spread with a structure used in a fire prevention facility. A fire spread prevention member for suppressing fire spread with a structure used in a fire prevention facility, the fire spread prevention member comprising: (A) 100 parts by mass of a polyurethane binder; and (B) from 30 to 180 parts by mass of expandable graphite; the polyurethane binder (A) comprising a structure derived from a polyol containing a structure with at least ten consecutive carbon atoms.