纸和纸板.碱储量的测定

[中文适用范围]： 本标准规定了纸和纸板碱储量的测定方法。 它适用于含有碱性颜料或其他碱性物质的产品，添加这些碱性物质是为了提高其对酸侵蚀（降解）的抵抗力。 本文件不适用于不会通过所述程序完全分解的层压、印刷或其他加工等级。 所得结果将包括涂布纸涂层中含有的碱性颜料。 注：这种碱性涂层可以保护纸芯免受环境空气中酸性物质的影响，但其对原纸本身产生的酸性物质的影响尚不确定。 [外文原描述]： This document specifies a method for the determination of the alkali reserve of papers and boards. lt is intended for products that contain alkaline pigments or other alkaline material, added to improve their resistance to acid attack (degradation). This document is not applicable to laminated, printed or otherwise processed grades that will not disintegrate completely by the procedure described. The result obtained will include alkaline pigments contained in the coating of a coated paper. NOTE Such alkaline coating will protect the core of the paper from acid substances in ambient air, but its effect on acid substances generated in the base paper itself is uncertain.