GB/T 37197-2018 (English Version)

Standard No.: GB/T 37197-2018
Language: Chinese, Available in English version
Release Date: 2018
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 37197-2018

Scope: This standard specifies the classification and nomenclature, requirements, test methods, inspection rules, marking and accompanying documents, packaging, transportation and storage of ethylene-vinyl acetate (EVAC) resin. This standard applies to ethylene-vinyl acetate copolymers obtained by polymerization under high pressure with ethylene and vinyl acetate as monomers. The vinyl acetate content (mass fraction) in the copolymer is 3%~40%.

Introduction

1. Background and significance of the standard

GB/T 37197-2018 "Ethylene-vinyl acetate (EVAC) resin" was drafted according to GB/T1.1-2009 rules, proposed by the China Petroleum and Chemical Industry Federation, and managed by the National Plastics Standardization Technical Committee. This standard applies to ethylene-vinyl acetate copolymers (EVAC resins) obtained by polymerization under high pressure with ethylene and vinyl acetate as monomers, in which the vinyl acetate content ranges from 3% to 40% (mass fraction). The formulation of this standard provides unified technical specifications for the production, inspection and application of EVAC resins, ensuring the consistency and reliability of product quality.

2. Comparison of standard frameworks

Standard dimensions	GB/T 37197—2018	Comparison standards	Difference analysis
Classification and naming	In accordance with GB/T 30924.1—2016	Industry unified standards	No obvious differences, remain consistent
Technical requirements	Covering technical indicators of resins for injection molding, films, cables and hot melt adhesives	Single product standard	More comprehensive, suitable for applications in multiple fields
Test Methods	Combining multiple test methods (such as infrared spectroscopy, titration)	Single detection method	More scientific and more operational

3. Implementation suggestions and application cases

Implementation suggestions:

Enterprises should establish a complete quality management system to ensure compliance with standard requirements.
Strictly control the raw material ratio and process parameters during the production process, especially the precise determination of vinyl acetate content.
Strengthen the calibration and maintenance of test equipment to ensure data accuracy.

Application Case:

A cable manufacturing company uses EVAC 28 KN D045 resin to produce high-voltage cable insulation layers, which shows excellent electrical properties and mechanical strength in actual applications, meeting industry standard requirements. This case shows that EVAC resin has important application value in the cable field.

GB/T 37197-2018 Referenced Document

GB/T 1033.1-2008 Plastics.Methods for determining density of non-celluar plastics.Part1:Immersion method,liquid pyknometer method and titration method
GB/T 1410 Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials
GB/T 19466.3 Plastics-Differential scanning calorimetry(DSC)-Part 3:Determination of temperature and enthalpy of melting and crystallization
GB/T 2410 Determination of light transmittance and haze of transparent plastics
GB/T 2547-2008 Plastic resins-Sampling
GB/T 30924.1-2016 Plastics—Ethylene-vinyl acetate(EVAC) moulding and extrusion materials—Part 1: Designation system and basis for specification
GB/T 30924.2 Plastics.Ethylene-vinyl acetate(EVAC) moulding and extrusion materials.Part 2:Preparation of test specimens and determination of properties
GB/T 30925-2014 Plastics.Ethylene-vinyl acetate copolymer(EVAC)thermoplastics.Determination of vinyl acetate content
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 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
SH/T 1541-2006 Test method for appearance of thermoplastic granules

GB/T 37197-2018 history

2018 GB/T 37197-2018 Ethylene-vinyl acetate resin