초록 ▼

A sheet material useful for preparing high strength composite structures, especially in the field of light weight construction material, comprises a layer (A) of a high strength fibrous material impregnated and/or coated with a curable synthetic resin in the B-stage and a layer (B) of a polyamide po

A sheet material useful for preparing high strength composite structures, especially in the field of light weight construction material, comprises a layer (A) of a high strength fibrous material impregnated and/or coated with a curable synthetic resin in the B-stage and a layer (B) of a polyamide polymer or another polymer having similar properties and being compatible with the curable synthetic resin of layer (A), which layer (B) is partially or completely bound to or embedded in layer (A).

대표청구항 ▼

A sheet material suitable for use with nonmetallic honeycomb core in the construction of honeycomb sandwich panels the sheet material consisting essentially of a layer (A) of a high strength fibrous material impregnated and/or coated with a B-stage phenolic resin, to which one side of the sheet mate

A sheet material suitable for use with nonmetallic honeycomb core in the construction of honeycomb sandwich panels the sheet material consisting essentially of a layer (A) of a high strength fibrous material impregnated and/or coated with a B-stage phenolic resin, to which one side of the sheet material has been applied a layer (B) of a polyamide resin, said layer (B) of polyamide at least partially imbedded in the preimpregnated phenolic layer (A).