GB/T 41877.2-2022 Plastics—Ethylene-vinyl alcohol (EVOH) copolymer moulding and extrusion materials—Part 2:Preparation of test specimens and determination of properties (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 41877.2-2022
Scope
This document specifies methods and conditions for the preparation and performance measurement of specimens of ethylene vinyl alcohol (EVOH) molded and extruded materials. This document also specifies the requirements for the pretreatment of test materials and the conditioning of specimens before testing. This document lists the appropriate and necessary properties and test methods for characterizing ethylene vinyl alcohol (EVOH) molding and extrusion materials. These properties are selected from the GB/T19467.1 general test method. This document also lists other test methods that are widely used or of special significance for molding and extrusion materials, as well as the melt mass flow rate determination method specified in GB/T41877.1. In order to ensure the reproducibility and repeatability of test results, it is necessary to use the sample preparation and condition conditioning methods specified in this document, as well as the specified sample dimensions and test methods. Test data obtained using specimens prepared under different conditions or using specimens of different sizes may be inconsistent.
GB/T 41877.2-2022 Referenced Document
GB 2536 Fluids for electrotechnical applications.Unused mineral insulating oils for transformers and switchgear
GB/T 1033.1 Plastics.Methods for determining density of non-celluar plastics.Part1:Immersion method,liquid pyknometer method and titration method
GB/T 1040.1 Plastics—Determination of tensile properties—Part 1:General principles
GB/T 1040.2 Plastics—Determination of tensile properties—Part 2: Test conditions for moulding and extrusion plastics
GB/T 1043.1 Plastics.Determination of charpy impact properties.Part 1:Non-instrumented impact test
GB/T 11546.1 Plastic.Determination of creep behaviour.Part 1:Tensile creep
GB/T 1408.1 Insulating materials.Test methods for electric strength.Part 1:Test at power frequencies
GB/T 1409 Recommended methods for the determination of the permittivity and dielectric dissipation fator of electrical insulating materials at power,audio and radio frequencies including meter wavelengths
GB/T 1633 Plastics--Thermoplastic materials--Determination of vicat softening temperature(VST)
GB/T 1634.1 Plastics—Determination of temperature of deflection under load—Part 1:General test method
GB/T 17037.1 Plastics—Injection moulding of test specimens of thermoplastic materials—Part 1:General principles,and moulding of multipurpose and bar test specimens
GB/T 1843 Determination of Izod Impact Strength of Plastics
GB/T 19466.2 Plastics-Differential scanning calorimetry(DSC)-Part 2:Determination of glass transition temperature
GB/T 19466.3 Plastics-Differential scanning calorimetry(DSC)-Part 3:Determination of temperature and enthalpy of melting and crystallization
GB/T 19467.1 Plastics-Acquisition and presentation of comparable single-point data-Part 1:Moulding materials
GB/T 19789 Packaging material—Test method for oxygen gas permeability characteristics of plastic film and sheeting—Coulometric sensor
GB/T 2408 Plastics—Determination of burning characteristics—Horizontal and vertical test
GB/T 2918 Standard environment for conditioning and testing of plastic specimens
GB/T 31838.2 Solid insulating materials—Dielectric and resistive properties—Part 2: Resistive properties (DC methods)—Volume resistance and volume resistivity
GB/T 31838.3 Solid insulating materials—Dielectric and resistive properties—Part 3: Resistive properties (DC methods)—Surface resistance and surface resistivity
GB/T 33047.1 Plastics.Thermogravimetry(TG) of polymers.Part 1:General principles
GB/T 3398.2 Plastics.Determination of hardness.Part 2:Rockwell hardness
GB/T 3682.1 Plastics—Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics—Part 1:Standard method
GB/T 41877.1 Plastics—Ethylene-vinyl alcohol (EVOH) copolymer moulding and extrusion materials—Part 1:Designation system and basis for specifications
GB/T 4207 Method for the determination of the proof and the comparative tracking indices of solid insulating materials
GB/T 9341 Plastic.Determination of flexural properties
GB/T 9345.1 Plastics.Determination of ash.Part1:General methods
IEC 60243-1:2013 Electric strength of insulating materials - Test methods - Part 1: Tests at power frequencies
ISO 75-1:2013 Plastics - Determination of temperature of deflection under load - Part 1: General test method
ISO 75-2:2013 Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite
GB/T 41877.2-2022 history
2022GB/T 41877.2-2022 Plastics—Ethylene-vinyl alcohol (EVOH) copolymer moulding and extrusion materials—Part 2:Preparation of test specimens and determination of properties