前言:这是CSA W206《硫酸盐木质素-差示扫描量热法玻璃化转变温度》的第一版。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。范围:1.1本标准描述了测定硫酸盐木质素玻璃化转变温度（Tg）的方法。该程序采用差示扫描量热法（DSC）。本程序适用于从硫酸盐制浆过程中分离出的固体木质素（如粉末状）。 它不适用于硫酸盐法制浆过程中产生的钠形式的未经处理的黑液和木质素。1.2在本标准中，“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。 表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）以定义其应用。

Preface:This is the first edition of CSA W206,Kraft lignin — Glass transition temperature by differential scanning calorimetry.This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope:1.1This Standard describes a method for the determination of the glass transition temperature (Tg) of kraft lignin. The procedure utilizes differential scanning calorimetry (DSC).This procedure is applicable to solid lignins (e.g., powdered form) isolated from the kraft pulping process.It does not apply to raw black liquor and lignin in the sodium form produced from the kraft pulping process.1.2In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.