▎ 摘　　要

NOVELTY - Preparation of polyimide fabric structure comprises preparing the first mixture solution of flame retardant and graphene oxide, where the flame retardant is phenoxy cyclophosphazene; preparing a second mixture solution containing carbon nanotubes; preparing a third mixture solution containing boron nitride; depositing the first mixture solution on the fabric polyimide, drying, forming a first conductive layer; depositing the second mixture solution on the first conductive layer, forming a second conductive layer; depositing the third mixture solution on the second conductive layer, drying, and forming a third conductive layer. USE - The polyimide fabric structure is used in fire alarm, where the fabric polyimide is connected in series in the fire alarm circuit to form a closed circuit (claimed). ADVANTAGE - The polyimide is connected to the fire alarm circuit, which can quickly sense the occurrence of fire, eliminate the defect of manual fire alarm response hysteresis, has an ultra-fast response to the occurrence of the fire, and plays a role of alarming in time. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for polyimide fabric structure.