SDBS添加量对陶瓷膜支撑体性能的影响
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摘要
以洛川黄土为骨料,十二烷基苯磺酸钠(SDBS)为烧结助剂,通过滚压成型法和固态粒子烧结法制备黄土陶瓷膜支撑体,采用热稳定性、抗折强度、纯水通量、耐酸碱度、晶相组成的分析及表面形貌的观察对支撑体进行了表征,并探究SDBS的添加量对陶瓷膜支撑体性能的影响。结果表明,SDBS的添加可促进黄土陶瓷膜支撑体的烧结与致密,在烧结温度为1 080℃时,SDBS的添加量为5%、抗折强度为40.43 MPa、纯水通量为1 807.71 L·(m~2·h·MPa)~(-1)、孔隙率为22.69%、平均孔径为8.17μm,酸碱腐蚀后质量损失率仅为0.19%与0.10%。SDBS作为作为烧结助剂可生产出成本合理、效果优良的陶瓷膜支撑体。
In this study, the rolling molding method and solid particle sintering method were used to prepare the tubular porous loess ceramic support with the aggregate of Luochuan loess and the sintering assistant of sodium dodecylbenzene sulfonate(SDBS). This support was characterized by thermal stability, flexural strength,pure water flux, acid/alkali resistance, analysis of crystal phase composition and observation of surface morphology.The effects of SDBS addition amount on the properties of the ceramic membrane support were investigated. The results showed that SDBS addition could promote the sintering and densification of loess ceramic membrane support. At the sintering temperature of 1 080 ℃ and SDBS content of 5%, the flexural strength, pure water flux,porosity and average pore size of the support were 40.43 MPa, 1 807.71 L·(m~2·h·MPa)~(-1), 17.12% and 8.17 μm,respectively. After acid/alkali corrosion, its weight loss rate was only 0.19% and 0.10%. Therefore, the ceramic membrane support with reasonable cost and good performance could be yielded when SDBS was taken as an additive.
In this study, the rolling molding method and solid particle sintering method were used to prepare the tubular porous loess ceramic support with the aggregate of Luochuan loess and the sintering assistant of sodium dodecylbenzene sulfonate(SDBS). This support was characterized by thermal stability, flexural strength,pure water flux, acid/alkali resistance, analysis of crystal phase composition and observation of surface morphology.The effects of SDBS addition amount on the properties of the ceramic membrane support were investigated. The results showed that SDBS addition could promote the sintering and densification of loess ceramic membrane support. At the sintering temperature of 1 080 ℃ and SDBS content of 5%, the flexural strength, pure water flux,porosity and average pore size of the support were 40.43 MPa, 1 807.71 L·(m~2·h·MPa)~(-1), 17.12% and 8.17 μm,respectively. After acid/alkali corrosion, its weight loss rate was only 0.19% and 0.10%. Therefore, the ceramic membrane support with reasonable cost and good performance could be yielded when SDBS was taken as an additive.
引文
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[2]孙慧,林强,李佳佳,等.膜分离技术及其在食品工业中的应用[J].应用化工,2017,46(3):559-562.
[3]康为清,时历杰,赵有璟,等.水处理中膜分离技术的应用[J].无机盐工业,2014,46(5):6-9.
[4]刘泽峰.膜分离技术在中药生产领域中的应用[J].中医药导报.2011,17(3):122-124.
[5]林彬,陈国需,杜鹏飞,等.膜分离技术在石油化工领域的应用[J].当代化工,2017,46(6):1196-1199.
[6]BIESHEUVEI P M,VERWEIJ H,BIESHEUVEI P.Design of ceramic membrane supports:Permeability,tensile strength and stress[J].Journal of Membrane Science,1999,156(1):141-152.
[7]SHQAU K,MOTTERN M L,YU D,et al.Preparation and properties of porousα-Al2O3membrane supports[J].Journal of the American Ceramic Society,2006,89(6):1790-1794.
[8]同帜,王丹,胡敏盾,等.燃烧助剂Ag2O对多孔氧化铝陶瓷膜支撑体性能的影响[J].材料科学与工程学报,2015,33(5):671-674.
[9]漆虹,邢卫红,范益群.低温烧成高纯Al2O3多孔陶瓷膜支撑体的制备[J].硅酸盐学报,2010,38(2):283-288.
[10]师瑞霞,尹衍升,王英姿.烧结助剂对氮化硅陶瓷显微结构和性能的影响[J].现代技术陶瓷,2003,24(3):7-11.
[11]王峰,谢志鹏,千粉玲,等.多孔陶瓷膜支撑体的制备研究进展[J].硅酸盐通报.2012,31(2):285-290.
[12]SHARMIWATI M S,ZAINAL A A.Preparation and characterization of tubular ceramic support for use in transesterification process[J].Science of Sintering,2012,44:187-195.
[13]王焕平,张斌,马红萍,等.CuO-TiO2复合助剂低温烧结氧化铝陶瓷的机理(Ⅱ)[J].材料研究学报,2010,24(1):37-43.
[14]YANG Y,HAN F,XU W,et al.Low-temperature sintering of porous silicon carbide ceramic support with SDBS as sintering aid[J].Ceramics International,2016,43(3):3377-3383.
[15]罗儒显,黄仲涛.固态粒子烧结法制α-Al2O3陶瓷膜管的研究(I)[J].五邑大学学报,1996,10(1):1-7.
[16]同帜,高婷婷,高丹,等.烧结制度对添加CuO-TiO2制备的Al2O3陶瓷膜支撑体性能的影响[J].膜科学与技术,2018,38(1):37-43.
[17]李大川,朱庆鹏,崔双科,等.圆板型多孔α-Al2O3陶瓷膜支撑体的制备与表征[J].环境工程学报,2012,6(3):941-944.
[18]同帜,刘婷,王丹,等.烧结温度对氧化铝陶瓷膜支撑体性能的影响[J].化学工程,2018,358(12):15-20.