The invention discloses a novel hydrogel
coal field fire preventing and extinguishing material, which is prepared by mixing a fire preventing and extinguishing dry material and water according to a material-
water mass ratio of 2-3:100; wherein the fire preventing and extinguishing dry material is prepared from the following components in percentage by
mass: 80 to 85 percent of composite environment-friendly hydrogel material, 5 to 10 percent of composite anti-
enzyme preservative and 10 to 15 percent of composite
halogen salt; the composite environment-friendly hydrogel material is prepared from the following components in percentage by
mass: 40 to 60 percent of instant polyanionic
cellulose, 0.5 to 1.5 percent of high-
viscosity polyacrylamide and 38.5 to 58.5 percent of
super absorbent resin; the compound type anti-
enzyme preservative is prepared from the following components in percentage by
mass: 30 to 40 percent of
calcium propionate, 15 to 30 percent of
potassium sorbate, 15 to 20percent of
calcium benzoate and 15 to 30 percent of
dehydroacetic acid. The novel hydrogel
coal field
fire prevention and extinguishing material provided by the invention has good
water retention performance, which forms a waterproof film with a certain thickness on the surface of a
coal body, so that the product can quickly reduce the temperature of a
coal field fire area, and effectively prevents air flow, so that
spontaneous combustion of coal is inhibited.