纳米Ni粒子/PTFE复合磁性膜的制备及表征  

Preparation and Characterization of Nanometer Ni/PTFE Magnetic Composite Membrane

作　　者：曹渊[1] 陶长元[2] 杜军[1] 杨修明[1] 张丙怀[3] 

机构地区：[1]重庆大学化学化工学院,重庆400044 [2]重庆大学化学化工学,院重庆400044 [3]重庆大学材料科学与工程学院,重庆400044

出　　处：《材料导报》2005年第7期118-120,共3页Materials Reports

基　　金：国家自然科学基金(50171838)

摘　　要：采用双向膜相扩散控制原位化学沉积方法,在聚四氟乙烯(PTFE)膜孔道中及膜面上原位化学沉积、生长磁性纳米 Ni 粒子,制得纳米 Ni 粒子/聚合物磁性复合膜。探讨了制备条件对复合膜磁性能的影响,并用 XRD 和SEM 等手段对磁性复合膜的结构、组成进行了表征。结果表明,复合膜膜孔中及膜表面上均有纳米级 Ni 粒子生成,且膜孔中的 Ni 粒子对复合膜磁性能具有显著影响。By two-side membrane phase diffusion and in-situ chemical deposition,magnetic nano-Ni particles grow in the PTFE membrane pores and on its surface;and the Nickel particles/PTFE magnetic composite membrane is prepared.Preparation conditions for composite magnetic membrane is investigated,and optimal condition is 0.48 mol· dm^(-3)NiCl_2,1mol·dm^(-3)NaOH,0.3mol·dm^(-3)KNaC_4H_4O_6·4H_2O,0.6 mol·dm^(-3)N_2H_4·2H_2O,reaction temper- ature 60℃,for 30min.The prepared composite membrane's magnetisability is 2.03×10^(-2) cm^3/g under optimal condition. Furthermore,morphology and the structure of magnetic composite membrane are studied with XRD and SEM.Magnet ic nano-Ni particles are observed in the PTFE membrane's pores,and nano-Ni particles deposited in pores have a re- markable effect on composite membrane's magnetisability.

关 键 词：纳米Ni粒子 PTFE 磁性复合膜 磁化率 原位复合 

分 类 号：O648.15[理学—物理化学]