ISO 1628-6-1990 塑料 粘数和极限粘数的测定 第6部分:甲基丙烯酸甲酯聚合物

标准号：ISO 1628-6-1990
中文标准名称：塑料 粘数和*限粘数的测定 第6部分:甲基丙烯酸甲酯聚合物
英文标准名称：Plastics; determination of viscosity number and limiting viscosity number; part 6: methyl methacrylate polymers
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：1990/2/1 12:00:00
中国标准分类号：G31
国际标准分类号：83.080.20
适用范围：This part of ISO 1628 specifies the conditions to be used for the determination of the viscosity number of methyl methacrylate polymer moulding and extrusion materials in dilute solution. It applies to methyl methacrylate (MMA) homopolymers and copolymers, and mixtures of the two with a minimum of 80 % (mlm) of MMA and up to 20 % (mlm) of other monomers, with and without additives, as defined in ISO 8257-1. NOTE - The dilute-solution viscosity of polymers can be also expressed as a limiting viscosity number [η] (see annex B).