GB/T 31984-2015 in English

VALID

Test method for determining the content of vinyl acetate in ethylene-vinyl acetatecopolymer applied in photovoltaic modules―Thermal gravimetric analysis(TGA)

Issued on:2015-09-11
Implemented on:2016-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $90.00
$88.00

Standard No:	GB/T 31984-2015
Document status:	VALID
Title in English:	Test method for determining the content of vinyl acetate in ethylene-vinyl acetatecopolymer applied in photovoltaic modules―Thermal gravimetric analysis(TGA)
Title in Chinese:	光伏组件用乙烯-醋酸乙烯共聚物中醋酸乙烯酯含量测试方法热重分析法（TGA）
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2015-09-11
Implemented on:	2016-05-01
Chinese Classification:	L90-Special electronic technology material
Professional Classification:	GB-National Standard
Related Keywords:	vinyl acetate content photovoltaic modules test methods photovoltaic modules vinyl acetate test method
Related Topics:	vinegar Vinyl tga test two methods acetic acid Ethylene+ content standard Styrene Analysis Method Standard Vinyl acetate infrared Test method for styrene content Ethyl acetate detection method Vinyl Content Test Analysis of cyanoacetic acid content Ethylene content Vinyl Spectrum vinyl english Vinyl content test method Method for Determination of Vinyl Content Ethyl cyanoacetate Acetic acid detection method isoacetic acid content Acetic acid detection method Acenaphthylene and content Thermogravimetric analyzer use Butyl acetate content in the coating tga test method Acetic acid test in water Vinyl acetate content Ethyl acetate content in ethanol Polyethylene spectrophotometry tga content analysis Vinyl acetate How does tga test gold content Gel content in polyethylene Ethanol content in ethyl acetate The detection method of ethyl acetate Styrene Analysis Method Ethyl acetate. 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Method for detecting acetic acid in waste gas Ethylene carbonate analysis Unorganized ethyl acetate sampling Glyoxylic acid analysis method Ethyl acetate tissue-free detection method Recrystallization from hot ethyl acetate Vinyl acetate emissions Ethyl acetate monitoring method Vinyl acetate environmental testing and testing methods vinyl acetate products Vinyl acetate emissions Monitoring methods for ethyl acetate Ethyl acetate environmental quality Styrene monitoring and analysis methods Manual determination method for ethyl acetate Detection of ethyl acetate in paint Ethyl acetate grade Test methods for industrial vinyl acetate Sampling of unorganized ethyl acetate Trace ethylene detection method China Standard for Thermogravimetric Analysis of Polymer Content Thermogravimetric analysis of polymer organic matter content Photometric detection method for nitrilotriacetic acid content Ethylene content test Test method for ethyl acetoacetate Comparison of acetic acid production methods Method for measuring acrylic acid copolymer by thermal cracking Vinyl acetate detection method Analysis method for potassium content in potassium acetate Polyethylene-vinyl acetate raw material Ethyl acetate detection method national standard Chlorhexidine acetate content detection method Analysis method of acetic acid in phosphoric acid Cortisone acetate analysis method Standard analytical method for unorganized acetic acid Method for determination of moisture in ethoxyacetic acid Test method for moisture in ethoxyacetic acid Acetic acid content detection method Potassium acetate method to test moisture vapor permeability Chromium acetate content analysis method Methods for analysis of oxygen-containing compounds in ethylene gb/t 31984 National standard test method for acetic acid water content Acetic acid is organized Application of thermal analysis methods in polymers Mercury acetate content test method Determination of polyethylene content in pharmaceuticals

《GB/T 31984-2015光伏组件用乙烯-醋酸乙烯共聚物中醋酸乙烯酯含量测试方法热重分析法（TGA）》由TC203（全国半导体设备和材料标准化技术委员会）归口，主管部门为国家标准化管理委员会。
本标准规定了利用热重分析法(TGA)测定光伏组件用乙烯-醋酸乙烯共聚物(以下简称 EVA)中醋酸乙烯酯(以下简称 VA)含量的方法,包括方法原理、样品准备、仪器和材料、测试环境、测试程序、结果处理及报告等。
本标准适用于光伏组件用 EVA 中 VA 含量的分析。

Introduction

GB/T31984-2015 Standard Interpretation: Test Method for Vinyl Acetate Content in EVA for Photovoltaic Modules

1. Background and Significance of Standard Formulation

This standard GB/T31984-2015 specifies the method for determining the content of vinyl acetate (VA) in ethylene-vinyl acetate copolymer (EVA) for photovoltaic modules by thermogravimetric analysis (TGA), which is applicable to the field of photovoltaic module manufacturing. The formulation of this standard fills the gap in the field of EVA material testing at home and abroad, and provides a unified technical specification for the photovoltaic industry.

With the rapid development of the photovoltaic industry, EVA, as a key packaging material, has a direct impact on the life and reliability of photovoltaic modules. The implementation of this standard helps to ensure the quality control of EVA materials and improve the overall level of photovoltaic products.

2. Comparison of standard frameworks

Standard dimensions	GB/T31984-2015	Comparison standards	Difference analysis
Scope of application	Determination of VA content in EVA for photovoltaic modules	Test methods for other materials	This standard is dedicated to the photovoltaic field and has stronger pertinence.
Test principle	TGA method	Other physical and chemical methods	TGA method is more suitable for the analysis of thermal decomposition characteristics of EVA materials.
Instrument requirements	Thermogravimetric analyzer (accuracy 0.01mg)	General analytical equipment	Higher requirements for instrument performance to ensure test accuracy.

3. Implementation suggestions and best practices

Case study: Test implementation of a photovoltaic company

When a photovoltaic company introduced this standard, it first upgraded its laboratory equipment, purchased a thermogravimetric analyzer that met the requirements, and organized professional training for technical personnel. In actual operation, the company found the following key points:

Sample preparation: Ensure that the sample is dried for no less than 6 hours, and use clean gloves to avoid contamination.
Test environment control: Strictly control the laboratory temperature and humidity within the range of (25±2)℃ and (50±5)%.
Data analysis: It is recommended to use professional software to automatically analyze the TGA curve to reduce human errors.

More samples: YD/T 3934-2021 JJG 21-2008 QC/T 942-2021

Sample only — not a preview of GB/T 31984-2015

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