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Norma ASTM D4895-18(2023) 1.5.2023 náhled

Doplňující informace

ASTM D4895-18(2023)

Standard Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion

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NORMA vydána dne 1.5.2023

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Provedení	PDF - okamžité stažení - 1 836.80 Kč Tištěné - 1 836.80 Kč
Dostupnost	SKLADEM
Cena	1836.80 Kč bez DPH
1 836.80 Kč

Informace o normě:

Označení normy: ASTM D4895-18(2023)
Datum vydání normy: 1.5.2023
Kód zboží: NS-1143947
Počet stran: 14
Přibližná hmotnost: 42 g (0.09 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Anotace 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)

Doplňující informace

1. Scope

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.

2. Referenced Documents

D638-22	Standard Test Method for Tensile Properties of Plastics
D792-20	Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D883-24	Standard Terminology Relating to Plastics
D1708-18	Standard Test Method for Tensile Properties of Plastics by Use of Microtensile Specimens
D1895-17	Standard Test Methods for Apparent Density, Bulk Factor, and Pourability of Plastic Materials
D3892-15(2020)	Standard Practice for Packaging/Packing of Plastics
D4052-22	Standard Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4441-20	Standard Specification for Aqueous Dispersions of Polytetrafluoroethylene
D4591-22	Standard Test Method for Determining Temperatures and Heats of Transitions of Fluoropolymers by Differential Scanning Calorimetry
D4894-19	Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
E11-22	Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E177-20	Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
IEEE/ASTM SI-10	Use of the International System of Units (SI): The Modern Metric System
D618-21	Standard Practice for Conditioning Plastics for Testing

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