BS ISO 20965-2005 塑料.聚合物熔体瞬态拉伸粘度的测定

标准号：BS ISO 20965-2005
中文标准名称：塑料.聚合物熔体瞬态拉伸粘度的测定
英文标准名称：Plastics - Determination of the transient extensional viscosity of polymer melts
标准类型：G31
发布日期：2005/4/12 12:00:00
实施日期：2005/4/12 12:00:00
中国标准分类号：G31
国际标准分类号：83.080.01
适用范围：ISO 20965:2005 specifies the general principles of a method for determining the transient extensional viscosity of polymer melts. The procedure details the measurement of polymer melt specimens stretched uniaxially under conditions of constant strain rate and constant temperature.The method is capable of measuring the transient extensional viscosity of polymer melts at Hencky strain rates typically in the range 0,01 s-1 to 1 s-1, at Hencky strains up to approximately 4 and at temperatures up to approximately 250 °C. It is suitable for measuring transient extensional viscosity values typically in the range from approximately 104 Pa.s to 107 Pa.s.