磁粉并用对磁性丁腈橡胶胶料性能的影响  

Effect of Magnetic Powder Blending on Properties of Magnetic NBR Compound

作　　者：梁琳 张寒珠 张保岗[1] 丁乃秀[1] 刘光烨[1] LIANG Lin;ZHANG Hanzhu;ZHANG Baogang;DING Naixiu;LIU Guangye(Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高性能聚合物及成型技术教育部工程研究中心,山东青岛266042

出　　处：《橡胶工业》2023年第4期260-265,共6页China Rubber Industry

摘　　要：以铁氧体磁粉和钕铁硼(NdFeB)磁粉为磁性填料制备磁性丁腈橡胶(NBR)胶料,研究两种磁粉单用和并用对胶料性能的影响。结果表明,两种磁粉单用时,采用NdFeB磁粉制备的磁性NBR胶料的磁性能更优异。两种磁粉并用时,随着NdFeB磁粉用量的增大,胶料的硬度增大,拉伸强度和撕裂强度先增大后减小,在铁氧体磁粉/NdFeB磁粉并用比为700/10时达到最大;胶料的剩余磁感应强度和最大磁能积先增大后减小,在铁氧体磁粉/NdFeB磁粉并用比为700/30时最大,分别为0.197 T和7.3 kJ·m^(-3)。Magnetic nitrile butadiene rubber(NBR)compounds were prepared with ferrite magnetic powder and NdFeB magnetic powder as magnetic fillers.The effects of the two magnetic powders used alone and their blends on the properties of the compounds were studied.The results showed that when the two kinds of magnetic powder were used alone,the magnetic properties of the magnetic NBR compound prepared by NdFeB magnetic powder were better.When the two kinds of magnetic powder were applied together,with the increase of the dosage of NdFeB magnetic powder,the hardness of the compound increased,and the tensile strength and tear strength first increased and then decreased,reaching the maximum values when the blending ratio of ferrite magnetic powder/NdFeB magnetic powder was 700/10.The residual magnetic induction intensity and the maximum magnetic energy product of the compound first increased and then decreased with the increase of the dosage of magnetic powder,and the maximum values were 0.197 T and 7.3 kJ·m^(-3),respectively,when the blending ratio of ferrite magnetic powder/NdFeB magnetic powder was 700/30.

关 键 词：铁氧体磁粉 钕铁硼磁粉 并用 磁性丁腈橡胶 磁性能 

分 类 号：TQ333.7[化学工程—橡胶工业] TQ330.387