对碳纳米管进行不同时间的球磨,以聚丙烯酸为分散剂、铅锡镀液为分散介质,制备了用于复合镀的碳纳米管铅锡悬浮液.采用分光光度法测定了悬浮液的沉降比,采用摩擦试验法测定了镀层的摩擦因数.研究了分散剂含量、球磨时间对碳纳米管铅锡悬浮液稳定性的影响,并对其分散机理进行了初步探讨.结果表明,聚丙烯酸在铅锡镀液中能有效地分散碳纳米管.当聚丙烯酸的体积分数为0.3%、球磨机转速为300r/min、球磨时间为6h时,悬浮液的沉降比最小,复合镀层的摩擦因数也最小.聚丙烯酸对碳纳米管的稳定分散作用主要是通过电空间稳定机制来实现的.
In order to get homogeneously dispersed carbon nanotubes suspension for composite plating, carbon nanotubes are ball milled for different times and polycyclic acid (PA) is used as a dispersant Sedimentation ratio is calculated by measuring the absorbance of suspensions and friction coefficient of the composite coatings is measured by friction test The effects of dispersant content and ball milling times on the dispersive stability of suspension are studied. In addition, the dispersion mechanism is preliminarily discussed. The results show that PA can effectively disperse carbon nanotubes in Pb-Sn electroplating solution. The volume fraction of PA is 0. 3%, milling time is 6h and the milling speed is 300r/min, sedimentation ratio is the smallest The composite coatings have the smallest friction coefficient too. Besides, the dispersion of carbon nanotubes in Pb-Sn electroplating solution with PA mainly results from electrostatics stabilization.
参考文献
| [1] | Stevenson James F.聚合物成型加工新技术[M].北京:化学工业出版社,2004 |
| [2] | Han C D;Yoo H J .Studies On structural foam processing Ⅳ.Bubble growth during mold filling[J].Polymer Engineering and Science,1981,21(09):518. |
| [3] | Papanastasiou A C;Scriven L E;Macosko C W .Bubble growth and collapse in viscoelastic liquids analyzed[J].NonNewtonian Fluid Mechanics,1984,16:53. |
| [4] | Amon M;Denson C D .A study of the dynamics of foam growth:Analysis of the growth of closely spherical bubbles[J].Polymer Engineering and Science,1998,24(13):1026. |
| [5] | Zhang Haiyan;Chen Yiming et al.The effect of laser power on the formation of carbon nanotubes prepared in CO_2 continuous wave laser ablation at room temperature[J].Physical Review B:Condensed Matter,2003,325:224. |
| [6] | 肖奇,王平华,纪伶伶,谭小科,欧阳林莉.分散剂CTAB对碳纳米管悬浮液分散性能的影响[J].无机材料学报,2007(06):1122-1126. |
| [7] | 庞真丽,蒋武锋,郝素菊,李朝旺.碳纳米管在水中分散性能[J].河北理工学院学报,2007(01):97-101. |
| [8] | 曹素芝,孙晓刚,李静,黄建华,曾效舒.分散剂对碳纳米管在聚合物基体中分散性能的影响[J].塑料,2008(03):42-44,81. |
| [9] | 杨静漪;李理;蔺玉胜 等.纳米ZrO_2水悬浮液稳定性的研究[J].无机材料学报,1997,12(05):655. |
| [10] | 龚书生,唐一文,徐亮,李必慧,陈正华.多壁碳纳米管/聚丙烯酸复合材料的制备及表征[J].华中师范大学学报（自然科学版）,2008(01):77-80. |
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