洗涤剂流动性测定

检测项目

休止角测定：休止角是衡量粉末流动性的基础参数，通过测量粉末自然堆积时锥体斜面与水平面的夹角来评估其内摩擦力和流动性大小。

堆积密度测定：堆积密度分为松散堆积密度和振实堆积密度，反映粉末在自然填充和振实状态下的单位体积质量，直接影响包装体积计算。

压缩度计算：压缩度由松散密度与振实密度的差值计算得出，数值越高表明粉末的可压缩性越强，流动性通常越差。

卡尔指数测定：卡尔指数是评价粉末流动性的综合指标，通过压缩度和均匀性系数计算，常用于预测生产过程中的架桥和结拱倾向。

流出时间测定：使用标准漏斗测量一定质量粉末完全流出的时间，直接反映粉末在重力作用下的流动速率和顺畅程度。

剪切盒测试：采用剪切盒装置测量粉末的内聚力、内摩擦角和壁摩擦角，用于分析料仓设计和流动障碍的临界条件。

粒径分布分析：利用激光粒度分析仪测定粉末样品的粒度组成，细粉含量过高会显著影响整体流动性和抗结块性能。

含水率测定：水分含量对粉末流动性有显著影响，采用烘箱法或快速水分测定仪控制产品含水率在工艺要求范围内。

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