标准摘要
[中文适用范围]： IEC 62788的这一部分定义了用于测量光伏（PV）模块中使用的乙烯-醋酸乙烯（EVA）封装片的固化程度的术语、测试设备、测试环境、样品制备、测试程序和测试报告。本文包括差示扫描量热法（残余焓和熔化/冷冻方案）和凝胶含量方法。材料或模块制造商可以使用此程序来验证交联添加剂是否存在且具有活性。该程序还可用于验证模块制造（层压）过程，以实现质量和过程控制。该程序还可用于评估卷内 EVA 配方的均匀性，以及比较卷之间 EVA 配方的变化。该程序可应用于未固化或最近固化的 EVA 片材以及来自光伏模块的未固化或最近固化的 EVA。该测试程序也适用于 EVA 以外的交联乙烯共聚物。此过程中为量热测量确定的温度已针对 EVA 进行了优化。因此，如果测试程序应用于其他封装材料，则必须根据固化剂的活性温度和/或基材的熔化/冻结温度来调整测试温度的范围。 [外文原描述]： IEC 62788-1-6:2017 defines the terminology, test equipment, test environment, specimen preparation, test procedures, and test report for measuring the degree of cure of Ethylene-Vinyl Acetate (EVA) encapsulation sheet used in photovoltaic (PV) modules. The differential scanning calorimetry (both residual enthalpy and melt/freeze protocols) and gel content methods are included herein. This procedure can be used by material- or module-manufacturers to verify that the cross-linking additive is present and is active. The procedure can also be used to verify the module manufacturing (lamination) process for the purposes of quality- and process-control. The procedure can also be used to assess the uniformity of the EVA formulation within a roll as well as to compare variation of the EVA formulation from roll to roll.
英文名称Measurement procedures for materials used in photovoltaic modules - Part 1-6: Encapsulants - Test methods for determining the degree of cure in Ethylene-Vinyl Acetate