分散剂对石墨水悬浮液分散性能的影响

王丽丽; 于锦; 李正元

分散剂对石墨水悬浮液分散性能的影响

沈阳工业大学理学院, 辽宁沈阳 110870

基金项目: 辽宁省高等学校研究项目专项资金(20060616).

详细信息

作者简介:
王丽丽,硕士研究生.E-mail:ligewang35@163.com

通讯作者:
于锦,教授.E-mail:keyanzuzy@163.com

中图分类号: TQ165
计量
- 文章访问数: 1278
- HTML全文浏览量: 375
- PDF下载量: 3174
- 被引次数: 0
出版历程
- 收稿日期: 2015-11-10
- 录用日期: 2016-02-02
- 修回日期: 2016-01-05
- 刊出日期: 2016-01-28

Dispersibility of graphite in water with different dispersants

School of Science Shenyang University of Technology, Shenyang 110870, China

Funds: Project of Institutes of Higher Education in Liaoning Province(20060616).

摘要

摘要: 通过测定分散体系的吸光度,探讨不同浓度的各种分散剂对石墨水悬浮液分散性能的影响,其中添加含有阴离子型、非离子型和高分子表面活性剂的三种复配分散剂(SGDF1、SGDF2、SGDF3)的石墨水悬浮液分散效果较好。进一步研究在复配分散剂存在下,pH值、静置时间对石墨水悬浮液性能的影响。结果表明,当pH值大于7后,石墨水悬浮液的分散能力维持在较高水平,pH值为9时,Zeta电位绝对值最高,吸光度最大,分散体系稳定性最好。添加分散剂的石墨较未添加分散剂的石墨聚集程度明显减弱,分散性能变好。其中添加SGDF3的石墨水悬浮液的石墨的聚集程度最小,分散稳定最佳。
- 石墨 /
- 分散剂 /
- 吸光度
Abstract: Octaphenyl polyoxyethyiene(OP-10), polyoxyethylene sorbitan monolaurate(Tween 20), sodium alcohol ether sulphate(AES), carboxymethylcellulose sodium(CMC), polyethylene glycol(PEG) 6000 and their mixtures were used to disperse graphite in water and their dispersion performance was investigated by spectrophotometry and Zeta potential measurements.Results indicate that three dispersant mixtures, (a) SGDF1 containing 100 g/L AES, 30 g/L Tween 20 and 20 g/L OP-10, (b) SGDF2 containing 100 g/L AES, 10 g/L Tween 20 and 20 g/L PEG-6000, and(c) SGDF3 containing 100 g/L AES, 10 g/L Tween 20 and 20 g/L CMC, have a good dispersibility for graphite in water.When the pH value is higher than 7, the dispersant mixtures have improved dispersibility.When the pH value is over 9, the Zeta potential of the graphite suspensions are high and their stability is the best.SGDF3 has the best dispersibility among all dispersants investigated.
- Graphite /
- Dispersant agent /
- Absorbency

HTML全文

下载: 全尺寸图片幻灯片

参考文献(17)

Joze M, Robert D, Romana C K, et al.Morphology and electrical properties of conductive carbon coatings for cathode materials[J].Journal of Power Sources, 2007, 174:683-688.

Syed Azim S, Satheesh A, Ramu K K, et al.Studies on graphite based conductive paint coatings[J].Progressin Organic Coatings, 2006, 55:1-4.

张宇, 刘家祥.颗粒分散[J].材料导报, 2003, 17(9):158-161.(ZHANG Y, LIU J.Dispersion of particles[J].Materials Review, 2003, 17(9):158-161.)

王相田, 胡黎明, 顾达, 等.超细颗粒分散过程分析[J].化学通报, 1995, (5):13-17.(WANG X T, HH L M, GU D, et al.Dispersion process analysis of ultrafine particles[J].Chemistry, 1995, (5):13-17.)

Ansar S A, Bhattacharya S, Dutta S, et al.Development of mullite and spinel coatings on graphite for improved water-wettability and oxidation resistance[J].Ceramics International, 2010, 36(6):1837-1844.

Saberi A, Golestani-Fard F, Sarpoolaky H, et al.Development of MgAl₂O₄ spinel coating on graphite surface to improve its water-wettability and oxidation resistance[J].Ceramics International, 2009, 35(1):457-461.

Li L B, Sun Y H, Bao H, et al.Synthesis and characterization of a poly(aniline-based disulfide)/diisocyanate-modified graphite oxide hybrid by a grafting technique[J].European Polymer Journal, 2011, 47(8):1630-1635.

赵建义, 王成扬, 李同起.超声波作用下炭黑的亲水性高分子聚合接枝[J].新型炭材料, 2005, 20(4):329-334.(ZHAO J Y, WANG C Y, LI T Q.Grafting of hydrophilic polymer on carbon black under ultrasonic irradiation[J].New Carbon Materials, 2005, 20(4):329-334.)

Toshiyuki Yokoi, Shizuki Seo, Naotaka Chino, etal.Preparation of silica/carbon composites with uniform and well-ordered mesopores by esterification method[J].Mieroporous and Mesoporous Materials, 2009, 124(l-3):123-130.

Li H Y, Chen H Z, Xu W J.Polymer-encapsulated hydrophilic carbon black nanoparticles free from aggregation[J].Colloids and Surfaces, 2005, 254:173-178.

张慧娟, 伍明华.纳米石墨在非水介质中的分散[J].化学工程, 2009, 37(8):43-45.(ZHANG H J, WU M H.The dispersive behavior of nano-graphite in none-water medium[J].Chemical Engineering, 2009, 37(8):43-45.)

Lee J H, Paik U, Hackley V A, et al.Effect of poly(acrylic acid) on adhesion strength and electrochemical performance of natural graphite negative electrode for lithium-ion batteries[J].Journal of Power Sources, 2006, 161(1):612-616.

Nonomura Y, Morita Y, Deguchi S, et al.Anomalously stable dispersions of graphite in water/acetone mixtures[J].Journal of Colloid and Interface Science, 2010, 346(1):96-99.

V Moraru, L Nikolai, S Dmitriil.Structural transitions in aqueous suspensions of natural graphite[J], Colloids and Surfaces, 2004, 242(1-3):181-187.

Paruchuri V K, Nalaskowski J, The effect of cosurfactants on sodium dodecyl sulfate micellar structures at a graphite surface[J].Colloids and Surfaces, 2006, 272(3):157-163.

Paruchuri V K, Nguyen A V, Miller J D.Zeta-potentials of self-assembled surface micelles of ionic surfactants adsorbed at hydrophobic graphite surfaces[J].Colloids and Surfaces, 2004, 250:519-526.

文潮, 金志浩, 关锦清, 等.炸药爆轰合成纳米石墨的红外光谱研究[J].高等学校化学学报, 2004, 25(6):1043-1045.(WEN C, JIN Z H, GUAN J Q, et al.Infrared spectroscopy studies of nano-graphite synthesized by expl osive detonation[J].Chemical Jouranal of Chinese Universities, 2004, 25(6):1043-1045.)

施引文献

资源附件(0)

访问统计