Fire protection article and related methods

A battery compartment for an electric vehicle comprising:

• at least one compartment wall having an inner and outer major surface, the inner major surface defining at least part of an enclosure and a fire protection article, the fire protection article comprising a fire barrier and a passive thermal insulator;
• the fire barrier disposed on the inner major surface, the fire barrier comprising a plurality of non-combustible fibers;
• and
• the passive thermal insulator disposed on the outer major surface, the passive thermal insulator comprising a plurality of non-meltable fibers having a crimped configuration,
• wherein the passive thermal insulator comprises a non-woven fibrous web of the non-meltable fibers having a crimped configuration, wherein the non-meltable fibers comprise oxidized polyacrylonitrile, wherein the non-woven fibrous web includes a multiplicity of fiber entanglements in which the fibers are entangled along directions perpendicular to a major surface of the non-woven fibrous web and has an average bulk density in the range from 15 kg/m3 to 40 kg/m3, and
• wherein the fire protection article displays a time to break in the 1100° C. Break Strength Test of at least 10 seconds and/or displays a minimum tensile strength at 150° C. of at least 5 kPa.