부산대학교 도서관

Even if we use conventional aerial firefighting methods, it is not easy to extinguish huge-forest fires. In this paper, we have proposed a new extinguishing method using gel balls containing high-viscosity fluid, which acts as an extinguishing agent, and attempted to fabricate physically cross-linked gel particles of sodium alginate in which xanthan gum aqueous solution is retained. Then, in order to examine the basic properties of the gel particles in high-temperature atmosphere, we observed the temporal changes in shape and mass of the gel particles on a high-temperature wall. As a result, it was confirmed that the gel particles contained more than 96% water and can supply water vapor over a long period of time.