Device for warning of pre-fire conditions resulting from local overheating of electrical equipment

摘要

PROBLEM TO BE SOLVED: To prevent a fire caused by a failure in electrical wiring, particularly a failure in a wiring device, relating to a means for controlling a pre-fire state caused by local overheating of an electrical device. A device for notification of local overheating is made of a polymer composite cross-linked material having an explosion rupture temperature in the range of 80-200 ° C. and containing an odorant on the inside. In some embodiments, the polymer composite is a microcapsule made of a thermosetting polymer having an odorant core encapsulated in a binder. In another embodiment of the present invention, the polymer composite is a polymer gel formed by cross-linked polymer particles swollen in a solution of light boiling material disposed in a polymer matrix. In another embodiment of the invention, the polymeric composite is silica gel or zeolite particles disposed within a polymer matrix and having an odorant adsorbed thereon. In another embodiment, the polymer composite is a porous polymer particle having closed pores or channels filled with an odorant or odorant solution disposed within a polymer matrix. As the odorant, sulfur dioxide, low molecular weight mercaptan, dialkyl sulfide, dialkyl disulfide, a mixture thereof or a solution thereof is used. Hydrofluorochlorocarbon, hydrofluorocarbon, fluorocarbon, perfluoro (ethyl isopropyl ketone), alkane, ether, or a mixture thereof can be used as a solvent for an odorant. [Selection] Figure 1