型号:ZK11986
一、定义:
休止角是指粉体堆积层的自由斜面在静止的平衡状态下,与水平面所形成的角
二、工作原理:
休止角常用的方法是固定圆锥法(亦称残留圆锥法)。固定圆锥法将粉体注入到某一有限直径的圆盘中心上,直到粉体堆积层斜边的物料沿圆盘边缘自动流出为止,停止注入,测定休止角。
三、特点:
测试粉末和颗粒通过进料漏斗后再流入到测试漏斗中再自动流出堆积,解决粉末和颗粒因加料时产品本身重力和内摩擦对粉末和颗粒自然流出之影响,得出数据更加真实反映产品本身的特性;如果粉体的流动性很差而不能流出时,加入100μm的玻璃球助流,助流剂的选择应该根据产品的实际特性选择,测定自由流动所需玻璃球的少加入量,加入量越多流动性越差.
粉体的休止角 < 30o 30o~45o 45o~60o 60o~90o
四、标准:
粉末和颗粒休止角测定仪不仅可以直接测定,而且可以测定粉体层的高度和圆盘半径后计算而得。即tanθ=高度/半径。
五、适用范围:
粉末和颗粒休止角测定仪广泛用于制药、工业化学、洗涤、科研院校、质检机构等等相关粉末粉体及颗粒材料之检测;可以提供粉体储藏性质的变化,特别是在料仓中储存情况等。
六、技术参数
1.圆盘: 直径100mm
2.漏斗: 漏斗颈内径10mm
3.漏斗总高度:141mm
4.基板上面刻有10-100mm同心圆
5.支架:基板起带有0-100mm的刻度尺用于测量锥体高度
配置:
2个漏斗(进料漏斗和测试漏斗)、
水平仪、
钢尺、
毛刷、
出口控制阀门、
接料盘、
固定支架1套.
Beijing Zhongke micro-nano Precision Instrument Co. , Ltd. is a Science and Technology R & D Enterprise registered in Yanqing District Science and Technology Park, Beijing. It has an independent R & D and design team, and cooperates with a number of key laboratories and enterprises in China, to provide technical support and development cooperation, the company has developed a series of testing instruments, mainly covering the fields of powder testing, carbon graphite material testing, battery testing instruments, pre-baked anode and electrode paste testing.
Beijing Zhongke micro-nano Precision Instrument Co. , Ltd. is a Science and Technology R & D Enterprise registered in Yanqing District Science and Technology Park, Beijing. It has an independent R & D and design team, and cooperates with a number of key laboratories and enterprises in China, to provide technical support and development cooperation, the company has developed a series of testing instruments, mainly covering the fields of powder testing, carbon graphite material testing, battery testing instruments, pre-baked anode and electrode paste testing.