摘要
以硝酸铁和草酸为原料,在去离子水溶液中采用水热法直接在涤纶织物纤维表面包覆纳米α-Fe2O3颗粒.采用单因素分析方法,研究硝酸铁浓度、反应温度和时间,分散剂种类和用量,氢氧化钠刻蚀和偶联剂改性对纳米α-Fe2O3包覆涤纶织物的影响,并借助扫描电镜、X射线衍射和振动样品磁强计对涤纶纤维改性后表面形貌、结构和磁性能进行了表征.结果表明,涤纶织物经过水热改性之后,纤维表面的附着物为赤铁矿纳米α-Fe2O3颗粒,晶粒大小在21.9nm左右,织物饱和磁化强度为0.003 2emu.g-1,矫顽力为203.0Oe.硝酸铁和草酸制备纳米α-Fe2O3包覆涤纶织物最佳工艺为:硝酸铁与草酸摩尔比为2∶3,硝酸铁用量0.03mol/l,反应温度150℃,反应时间4h.氢氧化钠刻蚀或者A-151(乙烯基三乙氧基硅烷)偶联改性能够增加织物表面纳米α-Fe2O3包覆量.
A layer of nanosized α-Fe2O3 was immobilized on the surface of PET fiber using ferric nitrate and oxalic acid at hydrothermal condition. The single factor analysis method was used to study the effect of the concentration of ferric nitrate, reaction temperature and time, the type and amount of dispersant, sodium hydroxide etching and silane coupling agent to the coating. The PET fabrics after treatments were characterized by scanning electron microscope （SEM）, X-ray diffraction （XRD） and vibrating sam- ple magnetometer （VSM） techniques. The results show that the fiber surface of PET fabric was covered with hematite α-Fe2O3 nanoparticles with an average size 21.9nm were synthesized. The saturation mag- netization of PET fabrics was measured to be 0. 003 2emu/g and the coercivity to be 203Oe. The opti- mum technology of nanosized α-Fe2O3 modified PET fabric was： the mole ratio of ferric nitrate and oxalic acid was 2 ：3, the concentration of ferric nitrate was 0.03mol/L, the reaction at a temperature of 150℃ for 4 hours. Sodium hydroxide etch or silane coupling agent A-151 will increase the amount of the α-Fe2O3 on the polyester fabric surface.
出处
《西安工程大学学报》
CAS
2013年第2期144-148,154,共6页
Journal of Xi’an Polytechnic University
基金
陕西省教育厅专项科研计划项目(12JK0564)
