▎ 摘　　要

NOVELTY - Modified oxidized graphene flame-retardant film comprises 0.1-0.6 pts. wt. ascorbic acid, 1 pts. wt. graphene oxide and 0.1-0.5 pts. wt. silane coupling agent. USE - Modified oxidized graphene flame-retardant. ADVANTAGE - The modified oxidized graphene flame-retardant promotes thermal reduction, and shortens the pre-warning time. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method fo preparing modified oxidized graphene flame-retardant film, which involves weighing modified oxidized graphene raw material, adding oxidized graphene to prepare graphene aqueous solution in container, then adding silane coupling agent and L-ascorbic acid and dispersing to obtain mixed solution, adding mixed solution to discharge bubble, drying and processing mixed solution obtained in container wall to obtain modified oxidized graphene flame-retardant film; and (2) a low temperature fire pre-warning device, which comprises low-pressure safe lamp, battery, and modified graphene oxide flame retardant film are connected by lead.