标准摘要
[中文适用范围]： 本文件规定了 a) 测定玻璃颗粒在 121 °C 下的耐水解性的方法。 电阻的测量和表示是用滴定从单位质量的玻璃中提取的碱所需的酸的体积来表示，也可以用相当于该体积的酸的氧化钠的量来表示，b)玻璃的分类根据本文献方法测定的耐水解性。 本文件旨在用于更耐用的玻璃类型，例如硼硅酸盐玻璃。 注1：对于电阻较小的玻璃，例如钠钙玻璃，ISO 719 中规定的方法更适合。 注 2：需要强调的是，本文件中规定的分类与 ISO 719 中规定的分类之间没有确切的相关性，因此，有必要确定正在使用哪种分类。 [外文原描述]： This document specifies a) a method for determining the hydrolytic resistance of glass grains at 121 °C. The resistance is measured and expressed by the volume of acid required for titration of the alkali extracted from the unit mass of glass, and can also be expressed by the amount of sodium oxide equivalent to this volume of acid, and b) a classification of glass according to the hydrolytic resistance determined by the method of this document. This document is intended for use on the more resistant types of glass, e.g. borosilicate glass. NOTE 1 For the less resistant glasses, e.g. soda-lime, the method specified in ISO 719 is more suited. NOTE 2 It is emphasized that there is no exact correlation between the classification laid down in this document and that laid down in ISO 719, and it is, therefore, essential to identify which classification is being used.
英文名称Glass — Hydrolytic resistance of glass grains at 121 °C — Method of test and classification