表面活性剂对镁质泡沫料浆及多孔骨料显微结构的影响

doi:10.3969/j.issn.1001-1935.2024.02.013

耐火材料 ›› 2024, Vol. 58 ›› Issue (2): 161-166.DOI: 10.3969/j.issn.1001-1935.2024.02.013

表面活性剂对镁质泡沫料浆及多孔骨料显微结构的影响

孙格格, 李国华, 矫长发, 田琳

辽宁科技大学材料与冶金学院辽宁鞍山 114051

收稿日期:2023-09-09 出版日期:2024-04-15 发布日期:2024-04-24
通讯作者: 李国华,女,1976 年生,硕士,副教授。 E-mail:liguohuagui97@163.com
作者简介:孙格格:女,2000年生,硕士研究生。 E-mail:17641242732@163.com

Effect of surfactant on microstructure of magnesia foam slurry and porous aggregates

Sun Gege, Li Guohua, Jiao Changfa, Tian Lin

First author's address: School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China

Received:2023-09-09 Online:2024-04-15 Published:2024-04-24

摘要/Abstract

摘要： 以轻烧镁粉为原料、十二烷基苯磺酸钠(SDBS)为表面活性剂,采用直接发泡法制备氧化镁泡沫料浆及镁质多孔骨料。研究表面活性剂SDBS对水系泡沫、氧化镁泡沫料浆、镁质多孔骨料显微结构的影响。结果表明:1)在水系泡沫中,随SDBS加入量增加,水系泡沫液膜增厚,泡沫形状由多边形转变为圆形,泡沫稳定性增加;2)氧化镁泡沫料浆中气泡形状为球形,氧化镁包覆在气泡周围阻碍液膜排液及气体扩散;3)氧化镁泡沫料浆衍生到多孔骨料过程中,骨料气孔数量减少,尺寸增加,形成封闭的圆形气孔,当SDBS加入量超过3%(w)后,气孔形状不完整;4)SDBS加入量为1%~4%(w)时,1 600 ℃下烧结的镁质多孔骨料,平均孔径为40.83~92.90 μm,气孔率为51.6%~73.9%。

关键词: 镁质多孔骨料, 氧化镁料浆, 十二烷基苯磺酸钠, 显微结构

Abstract: Magnesia foam slurry and porous magnesia aggregate were prepared by direct foaming with light-burned magnesia powder as the raw material and sodium dodecyl benzene sulfonate (SDBS) as the surfactant.Effects of surfactant SDBS on the microstructure of aqueous foam,magnesia foam slurry,and porous magnesia aggregate were studied.The results show that:(1)in aqueous foam,with the increase of the SDBS addition,the liquid films of aqueous foam thicken,the shape of foam changes from polygon to circle,and the foam stability increases;(2)the bubbles in the magnesia foam slurry are spherical,and magnesia coats around the bubbles to hinder the liquid film drainage and gas diffusion;(3)from magnesia foam slurry to porous aggregates,the number of aggregate pores decreases and the size increases,forming closed circular pores;when the SDBS addition exceeds 3 mass%,the pore shapes are incomplete;(4)the porous magnesia aggregate with the SDBS addition of 1%-4% (by mass) sintered at 1 600 ℃ has an average pore size of 40.83-92.90 μm and a porosity of 51.6%-73.9%.

Key words: porous magnesia aggregate, magnesia slurry, sodium dodecyl benzene sulfonate, micro-structure

中图分类号:

TQ175

孙格格, 李国华, 矫长发, 田琳. 表面活性剂对镁质泡沫料浆及多孔骨料显微结构的影响[J]. 耐火材料, 2024, 58(2): 161-166.

Sun Gege, Li Guohua, Jiao Changfa, Tian Lin. Effect of surfactant on microstructure of magnesia foam slurry and porous aggregates[J]. Refractories, 2024, 58(2): 161-166.

参考文献

[1] ZHANG X Y,YUAN J,DING Y J,et al.Directly growing nanowire-assembled nanofibrous ceramic foams with multi-lamellar structure via freeze-casting process[J].Journal of the European Ceramic Society,2021,41(1):1041-1047.
[2] ZHOU W Y,ZHANG Z,Li N,et al.A new mullite foamed ceramic prepared by direct-foaming methods in parallel with a mechanical activation technique[J].Ceramics International,2022,48(14):20721-20730.
[3] CHEN A N,LI M,WU J M,et al.Enhancement mechanism of mechanical performance of highly porous mullite ceramics with bimodal pore structures prepared by selective laser sintering[J].Journal of Alloys and Compounds,2019,776:486-494.
[4] 赵威,张国春,周春生,等.商洛钼尾矿制备泡沫陶瓷的研究[J].人工晶体学报,2017,46(3):475-479.
[5] WU J T,CHEN H Y,LUO X,et al.Design,fabrication,microstructure,and properties of highly porous alumina whisker foam ceramic[J].Ceramics International,2022,48(2):2776-2781.
[6] 胡明玉,樊财进,叶晓春.SiO₂-Al₂O₃-MgO系煤矿废弃物泡沫隔热陶瓷的制备研究[J].人工晶体学报,2019,48(2):280-285.
[7] LIU M W,YANG X,GUO J B,et al.Fabrication of SiC foam ceramics at a low sintering temperature by adding fly ash[J].Ceramics International,2022,48(20):30462-30467.
[8] ZHANG Z,ZHOU W Y,HAN B Q,et al.Preparation and characterization of eco-friendly and low-cost mullite-corundum foamed ceramics with low thermal conductivity[J].Ceramics International,2019,45(10):13203-13209.
[9] 康驰,李国华,周晓蕾,等.以硅溶胶浸渍处理核桃壳粉为造孔剂制备镁质隔热材料[J].耐火材料.2021.55(4):283-286.
[10] WANG Y,ZHOU Y J,CHENG H F,et al.Gelcasting of sol-gel derived mullite based on gelation of modified poly(isobutylene-alt-maleic anhydride)[J].Ceramics International,2014,40(7):10565-10571.
[11] WU Z,SUN L C,PAN J J,et al.Highly porous Y₂SiO₅ ceramic with extremely low thermal conductivity prepared by foam-gelcasting-freeze drying method[J].Journal of the American Ceramic Society,2018,101(3):1042-1047.
[12] 赵瑾,毛小建,王士维.直接发泡法制备孔特性可控的氧化铝泡沫陶瓷[J].硅酸盐学报,2019,47(9):1222-1234.
[13] 任威力,杨道媛,王瑞,等.发泡法制备镁铝尖晶石空心球隔热材料[J].耐火材料,2022,56(2):117-122.
[14] ZHAO J,YANG C,SHIMAI S Z,et al.The effect of wet foam stability on the microstructure and strength of porous ceramics[J].Ceramics International,2018,44(1):269-274.
[15] GONZENBACH U T,STUDART A R,TERVOORT E,et al.Ultrastable particle-stabilized foams[J].Angewandte Chemie International Edition,2006,45(21):3526-3530.
[16] HUO W L,ZHANG X Y,CHEN Y G,et al.Ultralight and high-strength bulk alumina/zirconia composite ceramic foams through direct foaming method[J].Ceramics International,2019,45(1):1464-1467.
[17] YU J L,YANG J L,LI S,et al.Preparation of Si₃N₄ foam ceramics with nest-like cell structure by particle-stabilized foams[J].Journal of the American Ceramic Society,2012,95(4):1229-1233.
[18] KHALLOK H,OJALA S,EZZAHMOULY M,et al.Porous foams based hydroxyapatite prepared by direct foaming method using egg white as a pore promoter[J].Journal of the Australian Ceramic Society,2019,55(2):611-619.
[19] 王士维.基于疏水作用的陶瓷浆料自发凝固成型研究进展[J].无机材料学报,2022,37(8):809-820.
[20] 艾建平,李萌,周国红,等.孔特性可控的轻质YSZ泡沫陶瓷制备及其力学性能研究[J].稀有金属材料与工程,2022,51(3):1072-1080.

表面活性剂对镁质泡沫料浆及多孔骨料显微结构的影响

Effect of surfactant on microstructure of magnesia foam slurry and porous aggregates

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 2

编辑推荐

Metrics

本文评价

[1]	梁保青, 张志峰, 王全喜, 尚俊利, 李宏宇, 赵臣瑞, 赵悦. SiC聚合物前驱体和Zn粉复合对Al₂O₃-C不烧滑板材料性能的影响[J]. 耐火材料, 2024, 58(2): 137-142.
[2]	康驰, 李国华, 周晓蕾, 韩基铄, 陈树江, 田琳. 以硅溶胶浸渍处理核桃壳粉为造孔剂制备镁质隔热材料[J]. 耐火材料, 2021, 55(4): 283-286.