Foaming characteristic resistance to flame composition and foaming characteristic resistance to flame tape

摘要

PURPOSE:To obtain the title composition suitable as tapes useful for presser winding of flame-resistant cable, having excellent oxygen index, foaming and flexibility by blending a polymer not containing a halogen as a binder with an expansion layer forming agent, carbonized layer forming agent and metal hydrate in a specific ratio. CONSTITUTION:(A) 100 pts.wt. polymer (e.g., EVA, EEA, PE or BR) not containing a halogen as a binder is blended with (B) 80-600 pts.-wt. expansion layer forming agent (e.g., ammonium phosphate), (C) 30-200 pts. wt. carbonized layer forming agent (e.g., starch or hexitol) and (D) 10-500 pts.wt. metal hydrate (e.g., aluminum hydrate) to give the aimed composition. The composition is applied to flame-retardant ground fabric or woody fiber cloth to give an expandable flame-retardant tape.