| 摘要 |
<p>PURPOSE:To improve the flowability of the raw material for a heat generating composition consisting of a metal powder, a halide, water, and a water absorption aid and to prolong the persistence of heat generation without any increase in volume. CONSTITUTION:Manufacture of a heat generating composition wherein a composition for generating heat through hydroxylation of a metal powder, consisting of a metal powder, a halide, water, and a water absorption aid, in which the water is in an amount of 55-70 pts.wt. based on 100 pts.wt. metal powder and the water-absorptive base material, is in an amount sufficient to retain the added water, is granulated to provide a mean particle diameter of at least 0.5mm after the base materials are mixed; and manufacture of the heat generating composition wherein 10-20 pts.wt. tacky binder component is incorporated into the added water to improve the strength of the granulated particles. As compared with conventional heat generating agents, the persistence of heat generation can be prolonged about 1.5-fold, about 10% increase in productivity can be realized, and troubles in discharging from a hopper and in filling can be prevented.</p> |
