| 摘要 |
To manuf. coal briquets with humidity-resistant ignition characteristics, KNO3 was added to 10 wt.% poly(vinyl acetate) in hexane and the mixt. was stirred at room temp. for 1 hr. After 12 hrs. the solid was sepd., rinsed with hexane and dried to give microencapsulated KNO3. The same procedure was carried out with KMnO4. The briquetes had the following compsn: charcoal (40%), smokeless coal (10), KNO3 (15), KMnO4 (2), and an adhesive agent (2 wt. %). KMnO4, KNO3, FeCl3 or Fe (NO3)3 were microencapsulated with polyethylene, polypropylene, polystyrene, or the like. The ignition characteristics of the fuels thus prepd. were not degraded by long exposure to humidity.
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