PRODUCTION OF CARBONACEOUS POROUS BODIES FOR USE IN FILTRATION SYSTEMS

摘要

A porous, carbonaceous body for use in respiratory protection is produced b y making a slurry of carbonaceous powder such as carbon black, a polymeric binder such as polyvinyl alcohol and a solvent, drying and grinding the slurry to yield a ground powder, compacting the powder and heat treating the resulting green body. Alternatively, the slurry is only partially dried to produce a paste, which is compacted and then heat treated. A reactive monomer (plasticizer of cross-linking agen t) can be added to the polymeric binder.