The invention discloses a high flame retardant sheath material for CPR data cables and a preparation method thereof. Raw materials include: 10~30 parts of polyethylene; 40~70 parts of vinyl copolymer; 10~20 parts of compatibilizer; 150~250 parts of inorganic flame retardant; 1~5 parts of phosphorus-based flame retardant; 1~3 parts of antioxidant; 1~3 parts of coupling agent; 0.5~1 part of ultraviolet absorber; 2~5 parts of lubricant. The preparation steps are as follows: first, accurately weighing all raw materials and mixing them uniformly in a mixer; second, performing extrusion granulation by a twin-screw extruder, and conducting secondary extrusion granulation on the obtained pellets. The flame retardant polyethylene cable material has good physical and mechanical properties, outstanding flame retardancy and excellent fluidity, ensuring superior processability.
Area Code: CN
Application Number: CN202411526779.0
