ИСТИНА

The present invention provides a fire extinguishing sheet including a fire extinguishing microcapsule, which comprises: a microcapsule having a core-shell structure, containing 80-97 wt% of a fire extinguishing agent that is a core, and having a shell surrounding the core; and a polymer mixture. The fire extinguishing sheet including a fire extinguishing microcapsule according to the present invention is capable of bursting fire extinguishing microcapsules all at once within a short period of time in case of a fire while completely protecting a fire extinguishing microcapsule. In addition, the fire extinguishing sheet including a fire extinguishing microcapsule is manufactured in the form of a sheet, a pad or a film depending on the thickness to be attached to where there is always a risk of fire like a circuit breaker in the form of a sheet or a pad, or to be inserted into the smallest space like a cylindrical secondary battery or an electronic cigarette in the form of a film in order to extinguish a fire. Accordingly, the fire extinguishing microcapsule can be applied to various smallest spaces.