沉淀法白炭黑的45µm筛余物质量测试方法改进  

Improvement of Test Method for 45µm Sieve Residue Weight of Precipitated Silica

作　　者：熊锦丽 谭苏芸 邓毅 毛善兵 王永庆 于方琪 XIONG Jinli;TAN Suyun;DENG Yi;MAO Shanbing;WANG Yongqing;YU Fangqi(Zhonghao Heiyuan Chemical Research and Design Institute Co.,Ltd,Zigong 643000,China;Quechen Silicon Chemical Co.,Ltd,Wuxi 214196,China)

机构地区：[1]中昊黑元化工研究设计院有限公司,四川自贡643000 [2]确成硅化学股份有限公司,江苏无锡214196

出　　处：《橡胶工业》2024年第5期389-393,共5页China Rubber Industry

摘　　要：对沉淀法白炭黑(水合二氧化硅,5 g)45µm筛余物质量的测试方法进行改进。结果表明:试样采用体积分数3%的氢氧化钠(NaOH)溶液浸泡,同时低速搅拌10 min,试样的水洗时间较短,冲洗效果较好,45µm筛余物质量测试值重复性较高;对微珠状试样进行4次NaOH溶液浸泡前后的平行试验试样的45µm筛余物质量测试值再现性精密度符合国家标准要求,即试样浸泡可明显缩短水洗时间,节约用水量。The test method for 45µm sieve residue weight of precipitated silica(hydrated silica,5 g)was improved.The results showed that the sample was soaked in 3%volume fraction sodium hydroxide(NaOH)solution and stirred at low speed for 10 min,the rinsing time of the sample was shorter,the rinsing effect was better,and the repeatability of 45µm sieve residue weight test value was higher.After conducting four parallel tests on the micro bead shaped samples before and after soaking in NaOH solution,the reproducibility precision of the test value of 45µm sieve residue weight met the requirements of national standards,that is,the sample soaking could significantly shorten rinsing time,saving water.

关 键 词：沉淀法白炭黑 45µm筛余物 浸泡 水洗 测试 

分 类 号：TQ330.383[化学工程—橡胶工业]