Home / Standards / GB/T 40384-2021 GB/T 40384-2021 Active Plastics—Determination of the transient extensional viscosity of polymer melts 塑料 聚合物熔体瞬态拉伸黏度的测定 Standard Type GBT ICS 83.080.01 CCS G31 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A