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ASTM D3222-21

Standard Specification for Unmodified Poly(Vinylidene Fluoride) (PVDF) Molding Extrusion and Coating Materials

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NORMA vydána dne 1.9.2021

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Informace o normě:

Označení normy: ASTM D3222-21
Datum vydání normy: 1.9.2021
Kód zboží: NS-1036249
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Termoplasty

Anotace textu normy ASTM D3222-21 :

This specification covers melt processable unmodified poly(vinylidene fluoride) (PVDF) molding, extrusion and coating materials. This specification covers only virgin homopolymer prepared from vinylidene fluoride supplied in form of pellet or powder and shall be free of foreign matter. Two types covered by this specification are type I PVDF fluoroplastics and type II PVDF fluoroplastics. Detailed requirements that shall conform to this specification include peak melting endotherm, specific gravity, refractive index, limiting oxygen index, flow rate, rheological properties, tensile properties, flexural properties, impact resistance, D-C resistance, dielectric strength, dielectric constant, and dissipation factor. Preparation of compression molded specimen shall be in accordance to this specification.

Keywords:

extrusion materials, fluorohydrocarbon plastics, fluoropolymers, molding materials, polyvinylidene fluoride (PVDF),, ICS Number Code 83.080.20 (Thermoplastic materials)

Doplňující informace

1. Scope

1.1?This specification covers melt processable molding and extrusion materials, as well as coating materials of poly(vinylidene fluoride) fluoroplastic, commonly abbreviated PVDF (or PVF_{1.2?This
specification applies only to the virgin homopolymer prepared from
vinylidene fluoride, not copolymers, reinforced, filled grades or
special grades with additives or treatments for modification of
attributes.}

1.3?The tests involved are intended to provide information for specification of unmodified PVDF homopolymer resins. It is not the purpose of this specification to provide engineering data for design purposes.

1.4?PVDF fluoroplastics melt between 156 and 180?C (312 and 356?F) and are thermally stable up to about 370?C (698?F). (WarningEvolution of corrosive and toxic hydrogen fluoride can occur under certain conditions.)

1.5?The values stated in SI units, as detailed in IEEE/ASTM S-10, are to be regarded as the standard. The values given in parentheses are for information only.

Note 1:?PVDF exhibits polymorphism.2 The type and extent of crystalline structure varies with the thermomechanical history of the sample. Specimens prepared by techniques different than prescribed in this specification can have properties that vary from the values specified.

1.6?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 2:?There is no equivalent ISO standard for this specification. Information in this specification is technically equivalent to related information in ISO 12086-1 and ISO 12086-2.

1.7?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

D257-14(2021)e1	Standard Test Methods for DC Resistance or Conductance of Insulating Materials (Includes all amendments and changes 5/6/2021).
D256-23e1	Standard Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics (Includes all amendments and changes 4/7/2023).
D149-20	Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
D150-22	Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
IEEE/ASTM S-10	Use of the International System of Units (SI): The Modern Metric System
D3892-15(2020)	Standard Practice for Packaging/Packing of Plastics
D3835-16	Standard Test Method for Determination of Properties of Polymeric Materials by Means of a Capillary Rheometer
D3418-21	Standard Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry
D2863-23	Standard Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics (Oxygen Index)
D1238-23a	Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer (Includes all amendments and changes 12/6/2023).
D883-24	Standard Terminology Relating to Plastics
D792-20	Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D790-17	Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials
D638-22	Standard Test Method for Tensile Properties of Plastics
D618-21	Standard Practice for Conditioning Plastics for Testing
D542-22	Standard Test Method for Index of Refraction of Transparent Organic Plastics

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