烧结制度对黄土基陶瓷膜支撑体性能的影响
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摘要
为研究烧结制度对黄土基陶瓷膜支撑体性能的影响因素,以洛川黄土为骨料,采用滚压成型法、固态粒子烧结法制备黄土基陶瓷膜支撑体。用自制纯水通量测定装置、三点弯曲、X-射线衍射(XRD)、扫描电镜(SEM)等对黄土基陶瓷支撑体的纯水通量、抗折强度、酸碱腐蚀率、晶相变化以及表面形貌等微观结构进行分析表征。研究表明,烧结温度低于900℃,无法提供足够的激活能,无新晶相生成;制备黄土基支撑体的最佳烧结制度:从室温～300℃以2℃/min升温,在300℃保温120 min;在300℃～800℃以2℃/min升温,在800℃保温120 min;800℃～1 130℃以1℃/min升温,在1 130℃保温180 min,最后随马弗炉自然冷却。此制度制备出的支撑体抗折强度为42.59 MPa,纯水通量为1 132.98 L/m~2·h·MPa,酸、碱腐蚀率分别为0.88%,0.71%。
In order to study the effect of sintering system on the performance of loess-based ceramic membrane support, the loess-based ceramic membrane support was prepared by rolling forming method and solid particle sintering method with Luochuan loess as aggregate. Pure water flux, flexural strength, acid-base corrosion rate, crystal phase of loess-based ceramic support by self-made pure water flux measuring device, three-point bending, X-ray diffraction(XRD) and scanning electron microscopy(SEM) Microstructures such as changes and surface topography were analyzed and characterized. Studies have show that the sintering temperature is lower than 900 ℃, which can not provide sufficient activation energy, so there is no new crystal phase formation; the best sintering system for preparing loess-based support: heat from room temperature to 300 ℃at 2 ℃/min, heat at 300 ℃120 min; heat at 2 ℃/min at 300 ℃～800 ℃, heat at 800 ℃ for 120 min; 800 ℃～1 130 ℃ at 1 ℃/min, heat at 1 130 ℃ for 180 min, and then naturally cool with muffle furnace. The flexural strength of the support prepared by this system is 42.59/MPa, the pure water flux is 1 132.98 L/m~2·h·MPa, and the acid/alkaline corrosion rate is 0.88% and 0.71%.
In order to study the effect of sintering system on the performance of loess-based ceramic membrane support, the loess-based ceramic membrane support was prepared by rolling forming method and solid particle sintering method with Luochuan loess as aggregate. Pure water flux, flexural strength, acid-base corrosion rate, crystal phase of loess-based ceramic support by self-made pure water flux measuring device, three-point bending, X-ray diffraction(XRD) and scanning electron microscopy(SEM) Microstructures such as changes and surface topography were analyzed and characterized. Studies have show that the sintering temperature is lower than 900 ℃, which can not provide sufficient activation energy, so there is no new crystal phase formation; the best sintering system for preparing loess-based support: heat from room temperature to 300 ℃at 2 ℃/min, heat at 300 ℃120 min; heat at 2 ℃/min at 300 ℃～800 ℃, heat at 800 ℃ for 120 min; 800 ℃～1 130 ℃ at 1 ℃/min, heat at 1 130 ℃ for 180 min, and then naturally cool with muffle furnace. The flexural strength of the support prepared by this system is 42.59/MPa, the pure water flux is 1 132.98 L/m~2·h·MPa, and the acid/alkaline corrosion rate is 0.88% and 0.71%.
引文
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[15] 朱庆鹏.多孔氧化铝陶瓷膜支撑体的制备及其性能表征[D].西安:西安工程大学,2012. ZHU Q P.Preparation and characterization of porous alumina ceramic membrane support[D].Xi′an:Xi′an Polytechnic University,2012.(in Chinese)
[2] 刘雅芝,丁亮,刘娇,等.面向燃料电池的聚苯醚基离子交换膜[J].高分子学报,2018(7):797-813. LIU Y Z,DING L,LIU J,et al.Polyphenylene oxide based on exchange membranes for fuel cells[J].Acta Polymerica Sinica,2018(7):797-813.(in Chinese)
[3] 王建华,方俊.膜分离材料及其在中药研究中的应用[J].材料导报,2008,22(5):35-37. WANG J H,FANG J.Membrane separation materials and their applications in research of Chinese traditional medicine[J].Materials Review,2008,22(5):35-37.(in Chinese)
[4] LIU J,DONG Y C,DONG X F,et al.Feasible recycling of industrial waste coal fly ash for preparation of anorthite-cordierite based porous ceramic membrane supports with addition of dolomite[J].Journal of the European Ceramic Society,2016,36(4):1059-1071.
[5] 杨柯,常启兵,王霞,等.高岭土为助烧剂制备多孔陶瓷膜支撑体[J].中国陶瓷,2012,48(9):24-27. YANG K,CHANG Q B,WANG X,et al.Preparation of Al2O3 ceramic membrane support used kaolin as sintering aid[J].China Ceramics,2012,48(9):24-27.(in Chinese)
[6] 张杰,田蒙奎,张云飞.烧结制度及造孔剂用量对粉煤灰基多孔陶瓷膜支撑体性能的影响[J].硅酸盐通报,2017,36(3):785-790. ZHANG J,TIAN M K,ZHANG Y F.Effect of sintering system and pore former content on the properties of fly ash based porous ceramic membrane support[J].Bulletin of the Chinese Ceramic Society,2017,36(3):785-790.(in Chinese)
[7] 张伟.复合碳化硅基多孔陶瓷支撑体的制备及其性能研究[D].海口:海南大学,2017. ZHANG W.The research on preparation and properties of composite silico carbide porous ceramics support as high temperature gas filtration[D].Haikou:Hainan University,2017.(in Chinese)
[8] 高婷婷,同帜,张帅,等.烧结制度对SiO2及Al2O3-SiO2陶瓷膜性能的影响[J].西安工程大学学报,2017,31(6):758-763. GAO T T,TONG Z,ZHANG S,et al.Effect of sintering system on the properties of SiO2 ceramic membrane and Al2O3-SiO2 ceramic membrane[J].Journal of Xi′an Polytechnic University,2017,31(6):758-763.(in Chinese)
[9] 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):671-674,691. TONG Z,WANG D,HU M D,et al.Effect of combustion adjuvant silveroxide on property of porous alumina ceramic membrane support[J].Journal of Materials Science and Engineering,2015,33(5):671-674,691.(in Chinese)
[10] MOCHóN J,CORES A,RUIZ-BUSTINZA í,et al.Iron ore sintering part 2:Quality indices and productivity[J].DYNA,2014,81(183):168.
[11] 胡敏盾,同帜,李大川,等.烧结制度对单管式氧化铝陶瓷支撑体性能的影响[J].粉末冶金材料科学与工程,2016,21(1):103-108. HU M D,TONG Z,LI D C,et al.Effect of sintering process on performance of single-tube alumina ceramic support[J].Materials Science and Engineering of Powder Metallurgy,2016,21(1):103-108.(in Chinese)
[12] 崔虎雄,成天涛,陈建民,等.SO2在Fe2O3颗粒表面不同温度下非均相反应的实验模拟[J].物理化学学报,2008,24(12):2331-2336. CUI H X,CHENG T T,CHEN J M,et al.A simulated heterogeneous reaction of SO2 on the surface of hematite at different temperatures[J].Acta Physico-Chimica Sinica,2008,24(12):2331-2336.(in Chinese)
[13] 同帜,黄文帅,张帅,等.复合烧结助剂中TiO2对α-Al2O3陶瓷支撑体的性能影响[J].粉末冶金技术,2016,34(6):423-427. TONG Z,HUANG W S,ZHANG S,et al.Study on the effect of TiO2 on the property of alumina ceramic support[J].Powder Metallurgy Technology,2016,34(6):423-427.
[14] 谢雨洲,彭超群,王小锋,等.HEMA-TBA凝胶体系制备多孔氧化铝陶瓷[J].无机材料学报,2017,32(7):731-738. XIE Y Z,PENG C Q,WANG X F,et al.Porous alumina ceramic prepared by HEMA-TBA gelcasting system[J].Journal of Inorganic Materials,2017,32(7):731-738.(in Chinese)
[15] 朱庆鹏.多孔氧化铝陶瓷膜支撑体的制备及其性能表征[D].西安:西安工程大学,2012. ZHU Q P.Preparation and characterization of porous alumina ceramic membrane support[D].Xi′an:Xi′an Polytechnic University,2012.(in Chinese)