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ASTM D4895-18(2023)
Standard Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion
NORMA vydaná dňa 1.5.2023
Informácie o norme:
Označenie normy: ASTM D4895-18(2023)
Dátum vydania normy: 1.5.2023
Kód tovaru: NS-1143947
Počet strán: 14
Približná hmotnosť: 42 g (0.09 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D4895-18(2023) :
This specification covers dry-powder resins of polytetrafluoroethylene (PTFE) resin produced from dispersion. PTFE mixtures with additives are not covered in this specification. This specification covers type I and type II PTFE. The resins shall be tested for bulk density, particle size, water content, melting peak temperature, tensile strength, elongation at break, standard specific gravity, extrusion pressure, thermal instability index, and stretching void index. Specimen preparation, testing, inspection, and packaging shall be in accordance to the procedures indicated in this specification.
Keywords:
coagulated dispersion polytetrafluoroethylene, fluoropolymers, polytetrafluoroethylene, PTFE,, ICS Number Code 83.080.10 (Thermosetting materials)
Doplňujúce informácie
| 1. Scope | ||||||||||||||||||||||||||||||
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1.1?This specification1.2?The values stated in SI units as detailed in IEEE/ASTM SI-10 are to be regarded as standard. The values given in parentheses are for information only. 1.3?The following safety hazards caveat pertains only to the Specimen Preparation Section, Section 9, and the Test Methods Section, Section 10, of this specification: 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:?Information in this specification is technically equivalent to related information in ISO 20568-1 and ISO 20568-2. 1.4?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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