1.1 该分类体系涵盖适用于使用ISO方法进行注塑、挤出和吹塑的未填充、增强填充和冲击改性材料。该系统允许使用回收、再生、回收或再加工的聚苯硫醚（PPS）塑料材料，或两者兼有，前提是满足本规范中规定的要求。供应商和买方有责任确保聚（苯硫醚）塑料材料的合规性（见指南） D7209 ). 1.2 本分类中包含的属性是识别所涵盖成分所需的属性。可能需要其他要求来确定对专业应用程序重要的特定特性。 后缀的使用如第节所示 5. 是指定这些要求的一种方法。 1.3 该分类系统和随后的线形标注（规范）旨在提供一种方法，指出用于制造成品或零件的塑料材料。它不用于选择材料。在仔细考虑零件所需的设计和性能、其将暴露的环境、将采用的制造工艺、所涉及的成本和材料的固有特性（本分类所涵盖的除外）后，需要由在塑料领域具有专业知识的人员进行材料选择。 1.4 以下预防性警告仅适用于试验方法部分第节 11 ，属于该分类系统: 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 注1: 本标准和ISO 28078涉及相同的主题，但技术内容不同。 注2: ASTM标准 D4067 PPS采用ASTM试验方法。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This classification system covers unfilled, reinforced filled, and impact modified materials suitable for injection molding, extrusion and blow molding using ISO methods. The system allows for the use of poly (phenylene sulfide) (PPS) plastic materials that are recycled, reconstituted recycled-regrind, recovered or reprocessed, or both, provided that the requirements as stated in this specification are met. It is the responsibility of the supplier and the buyer of recycled, reconstituted, recycled-regrind, recovered or reprocessed, or both, poly (phenylene sulfide) plastic materials to ensure compliance (see Guide D7209 ). 1.2 The properties included in this classification are those required to identify the compositions covered. It is possible that other requirements are necessary to identify particular characteristics important to specialized applications. The use of suffixes as shown in Section 5 is one way of specifying these requirements. 1.3 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection needs to be made by those having expertise in the plastic field after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the costs involved, and the inherent properties of the material other than those covered by this classification. 1.4 The following precautionary caveat pertains only to the test method portion, Section 11 , of this classification system: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Note 1: This standard and ISO 28078 address the same subject matter, but differ in technical content. Note 2: ASTM D4067 for PPS uses ASTM test methods. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.