Fe-Si磁性颗粒/环氧树脂复合材料的冲击和磁学性能  

Impact and magnetic properties of magnetic Fe-Si/epoxy composites

作　　者：田建伟[1,2] 肖红梅[1] 刘玉[1] 李峻青[2] 付绍云[1] 

机构地区：[1]中国科学院理化技术研究所,北京100190 [2]哈尔滨工程大学材料科学与化学工程学院,哈尔滨150001

出　　处：《复合材料学报》2014年第1期1-8,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51073169;11002141);北京市自然科学基金(2122055)

摘　　要：采用双酚A型wSR-615和缩水甘油胺型AG-80环氧树脂为基体，以Fe-Si磁性颗粒为填料，通过热压成型方法制备了高含量磁性Fe-si颗粒／环氧树脂复合材料。研究了环氧树脂基体的玻璃化温度和冲击强度及Fe-Si磁性颗粒含量对Fe-Si／环氧树脂复合材料的冲击强度和磁化强度的影响及温度敏感性。研究结果表明：随着磁性颗粒含量的增加，Fe-Si／环氧树脂复合材料的冲击强度和磁性能增加。当磁性颗粒体积分数由54vol％增加到66v01％时，Fe-si／环氧树脂的冲击强度和饱和磁化强度分别由4．03kJ／m2和162．07emu／g增加到7．16kJ／m2和175．04emu／g。Fe-si／环氧复合材料在-60℃～140℃范围内的温度敏感性低，符合实际应用对复合材料稳定性的要求。The magnetic composites were prepared by mixing bisphenols A WSR-615 and glycidyl amine AG-80 epoxy resins and a high content of Fe - Si magnetic particles using hot- pressing process. The glass transition temperature and impact property of the epoxy resins and the impact strength and magnetization of the composites were investigated as a function of Fe - Si content and temperature. It is shown that the impact strength and the magnetization of Fe - Si/epoxy composites increase with increasing the Fe - Si content and are enhanced from 4.03 kJ/m2 and 162.07 emu/g to 7.16 kJ/m2 and 175.04 emu/g at 54 vol% to 66 vol% Fe - Si particles. The impact strength and magnetization of the composites are very lightly sensitive to the temperature change from --60 ℃ to 140 ℃, which is desired for practical applications requiring that the mechanical and magnetic properties are stable as the temperature changes.

关 键 词：复合材料 热压法 软磁性能 力学性能 磁学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]