摘要
以N2H4为还原剂,采用化学镀和模板技术相结合的方法制备出NiCo/PTFE磁性复合膜。研究了磁性复合膜制备的适宜条件,利用DSC、SEM、XRD、VSM等手段对膜的结构和磁性能进行表征和测试。结果表明:在Co2+0.14 mol/L、Ni2+0.06 mol/L、NaOH 1.00 mol/L、N2H40.40 mol/L、反应温度70℃、反应时间70 min条件下制备的NiCo/PTFE磁性复合膜具有较优良的磁性能,其单位质量磁化率χm=0.16 cm3/g,饱和磁化强度Ms=83.38 Am2/kg,剩磁Mr=29.31 Am2/kg,矫顽力Hc=111.47 Oe;PTFE膜孔中及膜表面上原位生成与基膜无化学键作用的磁性Ni、Co金属粒子。复合膜具有软磁材料的内禀性能。
On the basis of template and electroless methods, NiCo/PTFE magnetic composite membranes were prepared with N2 H4 as reducing agent. The paper studied the optimum preparation conditions and characterized structures and magnetic properties of the membranes by DSC, SEM, XRD, VSM. The results show that magnetic composite membranes with susceptibility of 0.16 cm^3/g have ferromagnetic property （Ms = 83.38 Am^2/kg, Mr = 29.31 Am^2/kg, Ho=111.47 Oe）, which are obtained from solution of 0.14 mol/L Co^2＋ , 0.06 mol/L Ni^2＋ , 1.00 mol/L NaOH, 0.40 mol/L N2 H4 at 70℃ and 70 min. Magnetic Ni and Co particles appear in the pores and on the surface of PTFE membranes, and no chemical bonds are found between magnetic particles and membranes. The composite membranes have intrinsic properties of soft magnetic material.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2006年第2期88-92,共5页
Acta Materiae Compositae Sinica
基金
国家自然科学基金资助项目(50171838)
关键词
模板
化学镀
PTFE微孔膜
磁性复合膜
template
electroless plating
PTFE porous membrane
magnetic composite membrane
