... dripping4tension,N/50mm≥longitudinal450800350500transverse2503005fracture elongation,%≥longitudinal3040-transverse6cold flexibility,°C-18-25-18-25no crack7tear resistance ,N≥ ... ,N/50mm≥longitudinal450800350500transverse2503005fracture elongation,%≥longitudinal2540-transverse6cold flexibility ,°C-5-15-5-15no crack7tear resistance,N≥longitudinal250350250350transverse1702008phytotrons ...