GB/T 36965-2018 English PDF

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GB/T 36965-2018: Test method for cross-linking degree of ethylene-vinyl acetate copolymer applied in photovoltaic modules -- Differential scanning calorimetry (DSC)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36965-2018	199	Add to Cart	3 days	Test method for cross-linking degree of ethylene-vinyl acetate copolymer applied in photovoltaic modules -- Differential scanning calorimetry (DSC)	Valid

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Basic data

Standard ID: GB/T 36965-2018 (GB/T36965-2018)
Description (Translated English): Test method for cross-linking degree of ethylene-vinyl acetate copolymer applied in photovoltaic modules -- Differential scanning calorimetry (DSC)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L90
Classification of International Standard: 31.030
Word Count Estimation: 10,141
Date of Issue: 2018-12-28
Date of Implementation: 2019-04-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 36965-2018: Test method for cross-linking degree of ethylene-vinyl acetate copolymer applied in photovoltaic modules -- Differential scanning calorimetry (DSC)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test method for cross--linking degree of ethylene--vinyl acetate copolymer applied in photovoltaic modules--Differential scanning calorimetry (DSC) ICS 31.030 L90 National Standards of People's Republic of China Crosslinking degree of ethylene-vinyl acetate copolymer for photovoltaic modules Test Method Differential Scanning Calorimetry (DSC) Published on.2018-12-28 Implementation of.2019-04-01 State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This standard is proposed and managed by the National Semiconductor Equipment and Materials Standardization Technical Committee (SAC/TC203). This standard was drafted. Trina Solar Energy Co., Ltd., National Solar Photovoltaic Product Quality Supervision and Inspection Center, Wuxi Suntech Sun Energy Power Co., Ltd., DuPont (China) R&D Management Co., Ltd., China Electronics Technology Standardization Research Institute. The main drafters of this standard. Xiao Taoyun, Yang Xiaowu, Yang Bin, Yan Yafen, Chao Gaoyi, Tang Aifeng, Zhu Xiaogang, Zhou Min, Hu Hongjie, Feng Yabin. Crosslinking degree of ethylene-vinyl acetate copolymer for photovoltaic modules Test Method Differential Scanning Calorimetry (DSC)

1 Scope

This standard specifies the use of differential scanning calorimetry (hereinafter referred to as DSC) to measure ethylene-vinyl acetate copolymer for photovoltaic modules (hereinafter referred to as EVA) method of cross-linking, including terms and definitions, method principles, instruments and materials, test environment, sample preparation, instrument calibration, test procedures Sequence, data processing and test reports. This standard applies to the test of EVA cross-linking degree for photovoltaic modules.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2297 solar photovoltaic energy system terminology GB/T 19466.1-2004 Plastic Differential Scanning Calorimetry (DSC) - Part 1. General

3 Terms and definitions

The following terms and definitions as defined in GB/T 2297 and GB/T 19466.1-2004 apply to this document. 3.1 Cross-linkingdegree A physical quantity used to characterize the degree of crosslinking of a high molecular polymer. 3.2 Heat enthalpy value The amount of heat that a substance absorbs or releases due to chemical, physical, or temperature changes under constant pressure. Note. The unit of thermal enthalpy is joules per kilogram (J/kg) or joules per gram (J/g). 3.3 Baseline baseline A portion of the DSC curve that is outside the reaction or transition region but is adjacent to the region. Note. In this section, the heat flow rate (thermal power) difference is nearly constant.

4 Principle of the method

Measuring the difference in heat flow rate between the sample and the reference sample as a function of temperature and/or time under controlled atmosphere and programmed temperature control relationship. Note. The test can be carried out using two types of DSC instruments, power compensation type and heat flow type. The design of the measuring instruments used in the two methods is as follows. a) Power compensated DSC. keep the temperature of the sample and the reference sample the same. When the temperature of the sample changes, the measurement is input between the sample and the reference sample. The difference in heat flow rate with temperature or time; b) Heat flow type DSC. When changing the temperature of the sample according to the control program, measure the heat flow rate difference caused by the temperature difference between the sample and the reference sample ......

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