Polyethylene pipe having excellent creep resistance characteristic

摘要: PROBLEM TO BE SOLVED: To provide a polyethylene pipe useable even under high circumferential stress. SOLUTION: The is composed of resin composition (A) high-density and low-molecular weight ethylene polymer (B) low-density high-molecular copolymer obtained by polymerizing with ≥6C α-olefin metallocene catalyst having 960-965 kg/m 3 density, 0.15-0.3 g/10 min melt flow rate values (MMI) at 190°C 5 kg load ≥100 hr breaking time in constant stress environmental cracking test MPa In the pipe, ≤14 20°C ≥50 ≤5 80°C ≥3,000 hr. COPYRIGHT: (C)2004,JPO&NCIPI