ISO 8257-1:1998 塑料.聚异丁烯酸甲酯（PMMA）模塑和挤塑材料.第1部分：命名系统和基本规范

标准编号：ISO 8257-1:1998

中文名称：塑料.聚异丁烯酸甲酯（PMMA）模塑和挤塑材料.第1部分：命名系统和基本规范

英文名称：Plastics — Poly(methyl methacrylate) (PMMA) moulding and extrusion materials — Part 1: Designation system and basis for specifications

发布日期：1998-11

标准范围

1.1 ISO 8257的本部分建立了聚甲基丙烯酸甲酯（PMMA）热塑性材料的命名体系，可作为规范的基础。1.2 PMMA塑料的类型通过基于适当等级的指定性能的分类系统相互区分a） 维卡软化温度，b） 熔体质量流量，c） 粘度值（可选），以及关于预期用途和/或加工方法、重要性能、添加剂和着色剂的信息。1.3 ISO 8257的本部分适用于所有聚甲基丙烯酸甲酯均聚物和含有至少80%（m/m）甲基丙烯酸甲酯（MMA）和不超过20%（m/m）丙烯酸酯或其他单体的甲基丙烯酸甲酯（MMA）共聚物。它适用于以珠子、颗粒和颗粒形式准备好正常使用的材料，以及未经改性或经着色剂、添加剂等改性的材料。ISO 8257的本部分不适用于用弹性体改性的PMMA。1.4并不意味着具有相同名称的材料必须具有相同的性能。ISO 8257的本部分不提供工程数据、性能数据或加工条件数据，这些数据可能需要用于指定特定应用和/或加工方法的材料。如果需要此类附加性能，则应根据本国际标准第2部分规定的方法（如适用）确定。1.5为了为特定应用指定热塑性材料或确保可重复加工，数据块5中可能会给出额外要求（见第3条，介绍性段落）。

1.1 This part of ISO 8257 establishes a system of designation for poly(methyl methacrylate) (PMMA) thermoplastic materials, which may be used as the basis for specifications.1.2 The types of PMMA plastics are differentiated from each other by the classification system based on appropriate levels of the designatory propertiesa) Vicat softening temperature,b) melt mass-flow rate,c) viscosity number (optional),and on information about intended application and/or method of processing, important properties, additives and colorants.1.3 This part of ISO 8257 is applicable to all poly(methyl methacrylate) homopolymers and to copolymers of methyl methacrylate (MMA) containing at least 80 % (m/m) of MMA and not more than 20 % (m/m) of acrylic esters or other monomers.It applies to materials ready for normal use in the form of beads, granules and pellets and to materials unmodified or modified by colorants, additives, etc.This part of ISO 8257 does not apply to PMMA modified with elastomers.1.4 It is not intended to imply that materials having the same designation give necessarily the same performance. This part of ISO 8257 does not provide engineering data, performance data or data on processing conditions which may be required to specify a material for a particular application and/or method of processing.If such additional properties are required, they shall be determined in accordance with the methods specified in part 2 of this International Standard, if suitable.1.5 In order to specify a thermoplastic material for a particular application or to ensure reproducible processing, additional requirements may be given in data block 5 (see clause 3, introductory paragraph).

标准预览图