초록 ▼

A novel aramid honeycombs 11 and a method therefor are provided, wherein aramid sheets 1 are used as the base material for forming cell walls 18 of the honeycombs 11. The aramid sheets 1 comprise para-aramid pulps 2, an amount of 40% by weight or less of para-aramid fibers 3 and a binder 4. Each of

A novel aramid honeycombs 11 and a method therefor are provided, wherein aramid sheets 1 are used as the base material for forming cell walls 18 of the honeycombs 11. The aramid sheets 1 comprise para-aramid pulps 2, an amount of 40% by weight or less of para-aramid fibers 3 and a binder 4. Each of the aramid sheets 1 is calendered to produce pores 9, which extend from the outer surface to inside, with a porosity of 20% to 60%. Further, a reinforcing resin 10 is adhered to the cell walls 18 of the aramid sheets 1 and the pores are filled with the resin in an amount of 50% by volume based on the pore volume.

대표청구항 ▼

1. Aramid honeycombs comprising an assembly having a plurality of hollow columnar cells separated by cell walls, wherein aramid sheets are used as a base material for said cell walls, said aramid sheets including para-aramid pulps as a main component, including a binder, and containing a pluralit

1. Aramid honeycombs comprising an assembly having a plurality of hollow columnar cells separated by cell walls, wherein aramid sheets are used as a base material for said cell walls, said aramid sheets including para-aramid pulps as a main component, including a binder, and containing a plurality of pores, and wherein said cell walls formed by said aramid sheets are one of coated by and impregnated with a reinforcing resin, and said pores in said cell walls are filled with said resin. 2. Aramid honeycombs according to claim 1, wherein said aramid sheets further include para-aramid fibers. 3. Aramid honeycombs according to claim 2, wherein said para-aramid fibers include staple fibers of a staple or flock shape, and are used in an amount of 40% by weight or less of the total amount (100%) of said para-aramid pulps and said para-aramid fibers, and wherein said binder is used in an amount of 5% to 20% by weight to the total amount (100%) of said para-aramid pulps and said para-aramid fibers. 4. Aramid honeycombs according to claim 2, wherein said pores each extend from a surface to a location inside of a respective one of said aramid sheets, and collectively provide said cell walls with a porosity of 20% to 60% by volume. 5. Aramid honeycombs according to claim 2, wherein at least 50% of the total volume of said pores is filled with said reinforcing resin. 6. Aramid honeycombs according to claim 1, wherein said cell walls are both coated by and impregnated with said reinforcing resin. 7. Aramid honeycombs according to claim 1, wherein each said aramid sheet is a calendered sheet, said pores therein being a result of the calendering. 8. Aramid honeycombs according to claim 1, wherein said aramid sheets further include para-aramid fibers, wherein said pores are dispersed within said cell walls, wherein said reinforcing resin coats and adheres to surfaces of said cell walls, and wherein said para-aramid pulps, said para-aramid fibers, said binder and said reinforcing resin are strong bonded to each other to form a strong three-dimensionally woven structure which is said assembly. 9. Aramid honeycombs according to claim 1, wherein said binder is a resin. 10. Aramid honeycombs according to claim 1, wherein said binder is one of a polyvinyl alcohol, a phenolic resin, an acrylate resin, a water-soluble thermosetting resin, and a water-soluble thermoplastic resin. 11. Aramid honeycombs according to claim 1, wherein said para-aramid pulps are made from a nylon type resin material.