GB/T 37197-2018Ethylene-vinyl acetate resin (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the classification and naming of ethylene-vinyl acetate (EVAC) resins, requirements, test methods, inspection rules, signs and Document, packaging, transportation and storage.

This standard is applicable to the ethylene-vinyl acetate copolymer obtained by polymerizing ethylene and vinyl acetate as monomers. Copolymerization The vinyl acetate content (mass fraction) is 3% to 40%.

Note: EVA, the abbreviation for ethylene-vinyl acetate resin, also frequently uses EVA.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

Plastics -- Determination of density of non-foam plastics -- Part 1. Dipping method, liquid pycnometer method and titration method

GB/T 1410-2006 Test method for volume resistivity and surface resistivity of solid insulating materials

GB/T 2410-2008 Determination of transmittance and haze of transparent plastics

GB/T 2547-2008 Plastic sampling method

GB/T 3682.1-2018 Plastic thermoplastic melt mass flow rate (MFR) and melt volume flow rate (MVR) Determination of Part 1. Standard methods

GB/T 8170-2008 Numerical rounding rules and the representation and determination of limit values

Plastics - Differential scanning calorimetry (DSC) - Part 3: Determination of melting and crystallization temperature and enthalpy

Plastics and vinyl acetate (EVAC) moulding and extruded materials - Part 1: naming systems and Classification basis

Plastics - Ethylene acetate (EVAC) moulding and extrusion materials - Part 2: Sample preparation and Performance measurement

GB/T 30925-2014 Plastic ethylene-vinyl acetate copolymer (EVAC) thermoplastic vinyl acetate content Determination

SH/T 1541-2006 Test method for appearance of thermoplastic particles

3 Classification and naming

The classification and naming of ethylene-vinyl acetate (EVAC) resin is carried out in accordance with the provisions of GB/T 30924.1-2016.

4 Requirements

4.1 Ethylene Vinyl Acetate (EVAC) resin is a color-based particle with no impurities.

4.2 The technical requirements for EVAC for injection molding are shown in Table 1.

4.3 The technical requirements for EVAC for film are shown in Table 2.

4.4 The technical requirements for EVAC for cables are shown in Table 3.