钢渣基浆料黏度对多孔吸声材料结构与性能的影响  

Effect of steel slag-based slurry viscosity on structure and properties of porous sound-absorbing materials

作　　者：刘春磊 刘香君 孙佐霖 郭文涛 刘芳[1,4] 赵增武[1,3,4,5] LIU Chunlei;LIU Xiangjun;SUN Zuolin;GUO Wentao;LIU Fang;ZHAO Zengwu(College of Material and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010,Nei Mongol,China;Mechanical Engineering College,Inner Mongolia University of Science and Technology,Baotou 014010,Nei Mongol,China;Key Laboratory of Comprehensive Utilization of Polymetallic Resources in Bayan Obo Mine,Inner Mongolia Autonomous Region,Baotou 014010,Nei Mongol,China;National and Local Joint Engineering Research Center of Integrated Exploitation of Bayan Obo Associated Mineral Waste Resources,Inner Mongolia University of Science and Technology,Baotou 014010,Nei Mongol,China;Inner Mongolia Autonomous Region Carbon Neutrality Collaborative Innovation Center,Inner Mongolia University of Science and Technology,Baotou 014010,Nei Mongol,China)

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]内蒙古科技大学机械工程学院,内蒙古包头014010 [3]内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室,内蒙古包头014010 [4]内蒙古科技大学白云鄂博共伴生矿废弃物资源综合利用国家地方联合工程研究中心,内蒙古包头014010 [5]内蒙古科技大学内蒙古自治区碳中和协同创新中心,内蒙古包头014010

出　　处：《中国冶金》2024年第1期132-139,共8页China Metallurgy

基　　金：内蒙古自然科学基金资助项目(2020BS00516);内蒙古科技大学基础研究业务费资助项目(2022-YT-068,2024-OS-008);内蒙古自治区科技成果转化项目(CGZH2018153);内蒙古重大基础研究开放项目(20140201)。

摘　　要：钢渣和粉煤灰等资源的高效利用是目前中国资源利用领域的研究焦点。用废弃物制备多孔吸声材料是一种具有高附加值的利用途径。以钢渣和高铝粉煤灰为原料,采用有机泡沫浸渍法制备多孔吸声材料。通过内柱体旋转法研究固相含量和增稠剂与浆料黏度的关系,以及对烧结后样品的显微形貌、吸声性能和力学性能的影响。结果表明,在低剪切速率下,随着固相含量和增稠剂含量增加,浆料的黏度逐渐上升;随着剪切速率增加,浆料黏度逐渐降低,并在达到一定剪切速率后保持稳定,但剪切应力逐渐增大。随着固相含量的增加,样品的抗压强度和抗折强度呈现上升的趋势,孔径和孔隙率则逐渐下降,且吸声性能呈现出先升高后降低的趋势。通过制备黏度低且固相含量高的浆料,可以提升样品的吸声性能和力学性能。通过制备样品的最优工艺(经1160℃烧结1 h)制得样品的主晶相为钙长石,样品的体积密度为573.98 kg/m^(3)、抗压强度为1.0 MPa、平均吸声系数为0.47。The efficient utilization of resources such as steel slag and fly ash is the focus of research in field of resource utilization in China.The preparation of porous sound-absorbing materials from waste is an utilization approach with high added value.Porous sound-absorbing materials were prepared by organic foam impregnation method using steel slag and high-alumina fly ash as raw materials.The relationship between solid content and thickener with slurry viscosity was studied by inner cylinder rotation method,and the effects of solid content and thickener on the microstructure,sound absorption and mechanical properties of sintered materials were also studied.The results show that slurry viscosity increases with the increase of solid content and thickener content at low shear rate.As the shear rate increases,slurry viscosity gradually decreases and remains stable after reaching a certain shear rate,while the shear stress gradually increases.The compressive strength and flexural strength of sample gradually increase with the increase in solid phase content,while the pore size and porosity gradually decrease.Additionally,the sound absorption performance exhibits a trend of first increasing and then decreasing.The sound absorption and mechanical properties of the material can be enhanced by formulating slurry with excellent fluidity and high concentration of solids.The main crystal phase of sample prepared by optimal process(sintering at 1160℃for 1 h)is anorthite,the volume density of sample is 573.98 kg/m^(3),the compressive strength is 1.0 MPa,and the average sound absorption coefficient is 0.47.

关 键 词：浆料黏度 吸声性能 力学性能 孔隙结构 固相含量 

分 类 号：TB34[一般工业技术—材料科学与工程]