|
|
|
| Study on preparation of spherical silver powders with polyvinylpyrrolidone as dispersant |
| XIE Wei1,2, ZHENG Ya-ya1,2, KUANG Jia-cai3, XU Hua3, DENG Ying-jun3 |
（1. College of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410114, China
2. Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle, College of Hu’nan Province, Changsha 410114, China
3. Key Laboratory of Safety Design and Reliability Technology for Engineering Vehicle, Hu’nan Province,Changsha 410114, China） |
|
|
|
|
Abstract The spherical silver powders with uniform particle size were prepared using silver nitrate as raw material, ascorbic acid as reducing agent, polyvinylpyrrolidone (PVP) as dispersant through the method of liquid reduction. The effects of mass ratio of PVP/AgNO3 on the microstructure, crystal structure, particle size distribution and resistivity of spherical silver powders were investigated. Results show that the silver particles tend to be more spherical, the particle size gets smaller and more uniform, and the resistivity of the powder increases, while the crystal structure remains unchanged with the mass ratio of PVP/AgNO3 increasing. The resistivity of silver powder is 367 Ω·mm2/m when the mass ratio of PVP/AgNO3 is 0.6.
|
|
Received: 05 May 2014
Published: 28 February 2015
|
|
|
|
| [1] |
Chang C J, Ping Y, Ai Y Z.Glycerol and ethylene glycol comediated synthesis of uniform multiple crystalline silver nanowires . Materials Chemistry and Physics, 2014, 143:794-800.
|
| [2] |
Nagarajan K, Ramasamy T. A feasible approach to phyto-mediated synthesis of silver nanoparticles using industrial crop Gossypium hirsutum(cotton) extract as stabilizing agent and assessment of its in vitro -biomedical potential.Industrial Crops and Products, 2014, 55:1-10.
|
| [3] |
陆广广, 宣天鹏. 电子浆料的研究进展与发展趋势.金属功能材, 2008, 15 (1)48 -62.
|
| [4] |
Maksimovi V M, Pavlovi M G, Pavlovi L J, et al. Morphology and growth of electrodeposited silver powder particles. Hydrometallurgy, 2007, 86:2226.
|
| [5] |
司民真, 方炎, 彭家林, 等.电解法制备纳米银溶胶及其SERS活性研究.光谱学与光谱分析, 2007, 27(5):948-952.
|
| [6] |
NORSISYAN H H, LEE J H, SON H T, et al.A New and Effective Chemical Reduction Method for preparation of Nanosized Silver Powder And ColloidDispersion.Materials research Bulletin, 2003, 38(6):949-956.
|
| [7] |
徐冬梅, 张可达, 张王平, 等.微乳液法制备纳米粒子.化学研究与应用, 2002, 14(5):501-506.
|
| [8] |
夏年鑫, 蔡玉荣, 姚菊明, 等.纳米银的绿色合层：丝胶蛋白作为还原剂和分散剂.化学学报, 2011, 69(11):1321-1326.
|
| [9] |
甘卫平, 陈志波, 陈迎龙, 等.以聚丙烯酸为分散剂制备高分散超细银粉.电子元件与材料, 2011, 30(10):47- 51.
|
| [10] |
LIU X H, ZHANG F, HUANG R, et al.Capping Modes in PVP-Directed Silver Nanocrystal Growth：MultiTwinned Nanorods versus Single-Crystalline Nano-Hexapods.Crystal Growth and Design, 2008, 8(6):1916- 1922.
|
| [11] |
秦智.高分散球形银粉的制备技术研究[D].长沙.国防科学技术大学, 2010.
|
| [12] |
任中京.颗粒球形度检测.中国粉体技术, 2002, 4(8):203-204.
|
| [13] |
Wang H S, Qiao X L, Chen J G et al. Preparation of silver nanoparticles by chemical reduction method . Colloids SurfA-Physicochem Eng Aspects, 2005, 256(2/3):111-115.
|
| [14] |
Ruíz-Baltazar A, Esparza R, Pérez R. Spectroscopy study of silver nanoparticles produced by chemical reduction. Materials Science Forum, 2013, 755: 15-20.
|
| [15] |
RUSCHAU G R, YASHIKAWA S, NEWMHAM R E.Resistivities of conductive composites. Journal of Applied Physics, 1992, 72(3):953-959.
|
| [16] |
Zhu X, Briinger R, Herr U, et al. X-ray dimaction studies of the structure of nanometer-sized cryst-alline marerials.Physical Review, 1987, 35(17):9085.
|
| [17] |
张立德, 牟季美.纳米材料和纳米结构[M].北京科学出版社, 2001:112-138.
|
| [18] |
Yu Liguo, Zhang Yanhua. Preparation of Nano-Silver Flake by Chemical Reduction Method.Rare Metal Materials and Engineering, 2010, 39(3):0401-0404.
|
| [19] |
魏智强, 乔宏霞, 温贤伦等.镍纳米粉的比表面积测试研究.阴甘肃工业大学学报, 2003, 29(3):146-148.
|
| [20] |
熊胜虎, 杨荣春, 吴丹菁, 等.银粉形貌尺寸对导电胶性能的影响.电子元件与材料, 2005, 24(8):14-16.
|
|
|
|
2015, Vol. 25 
