Patent ID: 8734905

Claim:
A method for increasing the thermal protective performance (TPP) of a thermally protective laminate compared to the laminate without an active insulation, said method comprising: attaching a first convective barrier to a flame resistant, thermally stable textile; applying an active insulation comprising a polymer resin-expandable graphite mixture on said first convective barrier on a side opposing said flame resistant, thermally stable textile; positioning a second convective barrier on said polymer resin-expandable graphite mixture opposing said first convective barrier such that said polymer resin-expandable graphite mixture is sandwiched between said first and second convective barriers; and positioning a backer textile on said active insulation to form a thermally protective laminate; wherein said polymer resin-expandable graphite mixture comprises: about 2 wt % to about 30 wt % of an expandable graphite; and about 30 wt % to about 98 wt % of a polymer resin with a storage modulus between 10 3 and 10 6 dynes/cm 2 at 200° C. and Tan Delta of between 0.1 and 10 at 200° C.