复合分散剂液体磁性磨具的分散机理
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摘要
为提高水基液体磁性磨具的稳定性,选定六偏磷酸钠(SHMP)与聚丙烯酸(PAA)作为复合分散剂,纳米二氧化硅为辅剂,对悬浮液中固相颗粒表面进行改性,并研究其影响稳定性机理;对单个固相粒子进行微观分析,表征其物理特性,同时以沉降率和零磁场黏度为指标研究改性后的水基液体磁性磨具的稳定性。结果表明:六偏磷酸钠、PAA与纳米二氧化硅最佳的配方比例大致为0.19∶0.40∶0.41,稳定性最好。
In order to improve the stability of water-based fluid magnetic abrasives, sodium hexametaphosphate(SHMP)and PAA were selected as complex dispersants, nano-Si O_2 was used as a adjuvant. The surface of solid phase particles in suspension was modified and the mechanism of its stability was studied. The single solid particles were analyzed to characterize its physical properties on a micro level, and the stability of the modified water-based fluid magnetic abrasives was studied with sedimentation rate and zero magnetic field viscosity as an index.The results show that the optimum formula ratio of sodium hexametaphosphate, PAA and nano-Si O_2 is 0.19:0.40:0.41, and its stability is the best.
In order to improve the stability of water-based fluid magnetic abrasives, sodium hexametaphosphate(SHMP)and PAA were selected as complex dispersants, nano-Si O_2 was used as a adjuvant. The surface of solid phase particles in suspension was modified and the mechanism of its stability was studied. The single solid particles were analyzed to characterize its physical properties on a micro level, and the stability of the modified water-based fluid magnetic abrasives was studied with sedimentation rate and zero magnetic field viscosity as an index.The results show that the optimum formula ratio of sodium hexametaphosphate, PAA and nano-Si O_2 is 0.19:0.40:0.41, and its stability is the best.
引文
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[13]李坤,杨胜强,李维东,等.纳米二氧化硅对液体磁性磨具稳定性改良的研究[J].机械管理开发,2009,24(5):14-15.
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[15]HORN R G.Surface forces and their action in ceramic materials[J].J Am Ceram Soc,1990,72(5):1117-1135.
[16]高中滨.混料均匀试验设计方法研究[D].广州:华南理工大学,2011.
[17]熊晨熙.磁流变液沉降稳定性改进方法的研究[D].重庆:重庆大学,2011.
[18]侯鹏.磁流变液稳定性的评价研究[D].武汉:武汉理工大学,2008.
[2]MULLIKEN R S.Electronic population analysis on LCAO-MO molecular wave functions:I[J].Chemical Physical,1955,23(10):1833-1840.
[3]刘运飞.建筑陶瓷用复合分散剂的制备与性能研究[D].天津:天津大学,2012.
[4]陈飞.磁流变液制备及动力传动技术研究[D].徐州:中国矿业大学,2013.
[5]李俊,陈颖,莫松平,等.PVP和SDS混合分散剂对水基Ti O2悬浮液分散稳定性的影响[J].功能材料,2014,45(21):0-0.
[6]李坤,液体磁性磨具的改性研究[D].太原:太原理工大学,2009.
[7]周钦,孙桓五,张云飞,等.聚丙烯酸改良液体磁性磨具稳定性实验研究[J].磁性材料及器件,2014,(2):58-62.
[8]王少洪,牛厂磊,侯朝霞,等.堇青石粉体流延成形工艺中聚丙烯酸钠的分散机理研究[J].沈阳大学学报(自然科学版),2012,24(1):1-4.
[9]LU Y P,ZHANG M Q,FENG Q M.Effect of sodium hexametaphosphate on separation of serpentine from pyrite[J].Transactions of Nonferrous Metals Society of China,2011,21(1):208-213.
[10]徐东方,朱书全,曹国强,等.煤泥浮选过程中六偏磷酸钠对蒙脱石分散行为影响[J].煤炭学报,2016,41(s1):192-198.
[11]沈钟,赵振国,康万利.胶体与表面化学[M].北京:化学工业出版社,2012.
[12]张宏.液体磁性磨具基液改性实验分析[J].太原理工大学学报,2011,42(5):483-486.
[13]李坤,杨胜强,李维东,等.纳米二氧化硅对液体磁性磨具稳定性改良的研究[J].机械管理开发,2009,24(5):14-15.
[14]宋玲利,张仁元,毛凌波.纳米铝粉颗粒分散稳定性的研究[J].中国粉体技术,2011,17(2):53-56.
[15]HORN R G.Surface forces and their action in ceramic materials[J].J Am Ceram Soc,1990,72(5):1117-1135.
[16]高中滨.混料均匀试验设计方法研究[D].广州:华南理工大学,2011.
[17]熊晨熙.磁流变液沉降稳定性改进方法的研究[D].重庆:重庆大学,2011.
[18]侯鹏.磁流变液稳定性的评价研究[D].武汉:武汉理工大学,2008.