| 摘要 |
<p>A compressed wet exothermal composition formed by compressing a formable exothermal composition undergoing an exothermal reaction upon contact with air, wherein the exothermal composition comprises an iron powder, a carbon component, a reaction accelerator, a crosslinked water-absorbing polymer and water, is free of an agglomeration aid, an agglomerating agent, an aggregation aid, a dry binder, a dry binding agent, a dry binding material, an adhesive material, a thickening agent, a forming agent, an alcohol, a crosslinking agent or a plasticizer, and has a water content of 1 to 20 wt %, wherein it is produced by subjecting a reaction mixture having a movable water value of less than 0.01 to a contact treatment with an oxidizing gas in a circumstance of a temperature of 0°C or higher, to thereby impart, to the reaction mixture, the ability of achieving a temperature rise of the mixture of 1°C or more within 10 minutes, and then subjecting the mixture to the adjustment of water content to allow the mixture to have a mobile water value of 0.01 to 20 and thus contain excess water, wherein it is formable due to the excess water as a connecting material, and wherein the water in the exothermal composition does not function as a barrier layer. The above formable exothermal composition is formed by the compression in a mold comprising filling the composition in a mold having a mold hole until a depth nearly equal to that of the mold hole and compressing the composition to a thickness of 50 to 99.5 % relative to the depth of the mold hole. The above compressed wet exothermal composition is not soft and can hold its shape.</p> |
