有机硅浆渣水解废料资源化综合利用  

Comprehensive Utilization of Silicone Slurry Residue Hydrolyzed Waste

作　　者：游孟松 李钊 孙宇君 YOU Mengsong;LI Zhao;SUN Yujun(Jiangxi Xinghuo Star Technology Co.,Ltd.,Jiujiang 332000,Jiangxi)

机构地区：[1]江西星火狮达科技有限公司,江西九江332000

出　　处：《有机硅材料》2023年第2期40-46,共7页Silicone Material

摘　　要：对氯硅烷合成过程中产生的有机硅浆渣水解废料进行了资源化综合利用。针对水解废料的特性,设计了提铜、提硅粉及溶解制备甲基硅树脂微粉的工艺,分析了浆渣水解废料中主要成分含量的变化,探究了溶解温度、碱投入量及反应时间对溶解度的影响,最后将溶解液制成甲基硅树脂微粉,并对其形貌、粒径及杂质残留量进行了表征。结果表明:经过提铜提硅单质工艺,浆渣水解废料中铜的提取率约为91.43%,单质硅的提取率约为74.51%;在溶解条件为温度120℃、碱质量分数25%(占浆化脱铜脱硅水解渣质量的百分比)及反应60 min时,活化后的浆渣水解废料溶解度可达90.23%,综合利用率约为93.68%;此外,利用除杂溶解液制备的甲基硅树脂微粉产品经表征为20~50 nm球状颗粒组成的平均粒径为2μm的附聚体粉末,其Fe和Cu元素杂质残留量分别为102.81 mg/kg、9.12 mg/kg。The silicone slurry residues hydrolyzed waste in the synthesis of chlorosilane was comprehensively utilized as a resource.Based on the characteristics of the hydrolyzed waste,the processes of extracting copper,silicon and dissolving to prepare polymethylsilsesquioxane micropowder were designed,the changes of the main components in the hydrolyzed waste were analyzed,and the effects of dissolution temperature,alkali input and reaction time on the solubility were investigated.Finally,the solution was prepared into polymethylsilsesquioxane micropowder,and its morphology,particle size and impurity residues were characterized.The results show that the extraction rate of copper and silicon is 91.43%and 74.51%respectively in the extracting process of copper and silicon.Under the conditions of 120℃,25%of NaOH input and 60 minutes of reaetion,the solubility of the hydrolyzed waste reach 90.23%,and the comprehensive utilization rate is about 93.68%.The polymethylsilsesquioxane micropowder prepared from the solution of impurity removal is characterized and proved to be agglomerated powder with an average particle size of 2μm consisting of 20-50 nm spherical particles,as the residuals of Fe and Cu are 102.81 mg/kg and 9.12 mg/kg,respectively.

关 键 词：有机硅 浆渣 水解废料 综合利用 甲基硅树脂微粉 

分 类 号：TQ264.11[化学工程—有机化工]