The invention relates to a high-specific-heat-capacity substance based electric
welding protective plus material and a preparation method thereof. The high-specific-heat-capacity substance based electric
welding protective plus material is prepared from an inflaming-retarding
textile, a high-water-absorption
coating composition and a water-repellency finishing layer. The preparation method of theelectric
welding protective plus material comprises the following steps of applying the high-water-absorption
coating composition to the front surface of an inflaming-retarding plus material, next, oven-
drying for 1 min to 10 min at 120 DEG C, and baking for 1 min to 5 min at 160 DEG C, wherein the high-water-absorption
coating composition is prepared from oily
polyurethane, a cross-linking agent,high-water-absorption resin, a dispersant and
lignin powder and the like; locally or fully applying a water-repellency finishing agent to the back surface of the front surface coated inflaming-retarding
textile obtained in the former step; and before use, spraying or atomizing
liquid water with an application amount of 100 g / m<2> to 300 g / m<2> to the high-water-absorption coating on the front surface. Through the way, an electric welding spark in contact with the plus material can be quickly extinguished after the surface of the electric welding protective plus material provided by the invention absorbs water; the heat is absorbed or quickly moved away; thus, the heat reaching a
skin is reduced; and the purpose of protecting the
skin from being burned is achieved.