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Classification System and Basis for Specification for Polyphenylene Ether (PPE) Materials
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NORMA vydána dne 1.7.2022
Označení normy: ASTM D4349-22
Datum vydání normy: 1.7.2022
Kód zboží: NS-1067852
Počet stran: 7
Přibližná hmotnost: 21 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
line call-out specification, plastics, polyphenylene ether resin, recycled plastics,, ICS Number Code 83.080.20 (Thermoplastic materials)
1. Scope | ||||||||||||||||||||||||||
1.1?This classification system covers the basic polymers and copolymers known as polyphenylene ethers and polyphenylene oxides, as well as filled, modified, and reinforced versions. Recycled materials are included in this standard as Class 5 of Table PPE. Note 1:?The addition to the natural polymer or copolymer of
pigments, colorants, or other additives can cause the final
composition to no longer meet the requirements specified for the
natural polymer or copolymer.
Note 2:?The preferred abbreviation for polyphenylene ether is
PPE, as noted in Terminology D1600.
1.2?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 should 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 standard. 1.3?There may be other requirements necessary to identify particular characteristics important to specific applications. These are to be specified by using the suffixes described in Section 5. 1.4?The values stated in SI units are to be regarded as standard. Note 3:?There is no known ISO equivalent to this
standard.
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. |
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2. Referenced Documents | ||||||||||||||||||||||||||
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