巴黎澳门人娱乐网站——三十年激光粒度仪厂家,高新技术企业, 颗粒测试领域上市企业。

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激光粒度分析仪测试改性碳酸钙的方法

涂料与涂装行业

非矿应用

电池应用

水泥建材

陶瓷应用

磨料应用

石化应用

化工行业

激光粒度分析仪测试改性碳酸钙的方法

激光粒度仪测碳酸钙粒度的分布：一般碳酸钙（CaCO3）微粒因其良好的填加性能被广泛应用到涤料、塑料、造纸等其他多种化工行业，应用范围广泛。依其加工工艺和应用场合的不同，可分为表面改性与未改性的碳酸钙CaCO3，表面改性的CaCO3微粒在蒸馏水中易形成稳定的均匀分散的状态，用激光粒度仪可直接测出其粒径。而表面未改性的CaCO3则不然，对其分散性的研究实验数据如下：

 

序号

分散介质

分散剂

超声时间（S）

D50（中位径）um

1

水

无

120

微粒漂浮在上面，无法测量

2

水

表面活性剂

120

3.75

3

酒精

无

120

3.57

4

酒精

表面活性剂

120

3.55

 

测试结论：

1、改性CaCO3具有强烈的疏水性，故在无分散剂的状态下无法测试。

2、由于表面活性剂的加入大大降低了水的表面张力，它同酒精作分散介质时有相似的测试结果。两中方法均可。

3、由于表面活性剂的加入易起泡影响测试结果，所以用水作介质测试时适用于静态，而用酒精作分散介质时，静态、动态均可。

4、用酒精作介质时，加与不加电解质类分散剂结果差别不明显，故测试时可不加分散剂。

　　巴黎澳门人娱乐网站作为历史悠久的粒度仪企业，其粒度仪系列研制了多种型号，可根据不同的测试量程选择相应的产品，其中就有微量和超微量样品池供用户选择，我们推荐Winner2000ZD分档式激光粒度分析仪与Winner2000ZDE全自动激光粒度分析仪这两款产品来测试碳酸钙的粒度分布。此测试方法同样可以推广到其他的活性非金属矿物粉体粒度测试上。

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