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磁性高分子材料由于其比重小,强度高,保磁性强等特点,以及在电子仪器、传感器、仪表、通讯、自动控制等领域的广泛应用前景,正成为当今功能材料研究领域中的一个热点.结构型的磁性高分子材料仍处于探索性研究阶段,复合型的高分子磁性材料往往由于磁粉与高分子基材,尤其是与低极性大品种的聚烯烃基村的相容性很差,难以得到高性能的材料.为此,本工作首先制成了以磁活性物质如铁氧体等为载体的Ziegler-Natta催化剂,利用原位聚合的方法,使聚烯烃在磁活性物质表面原位生成,首次以此方法获得了既不同于结构型,也区别于复合型的塑料态和橡胶态的磁性聚烯烃材料.材料的性能测试结果表明,抗拉强度和饱和磁化强度均优于一般用共混法得到的复合型聚烯烃磁性材料.
Due to its small specific gravity, high strength and strong magnetic insulation, magnetic polymer has become a hotspot in the field of functional materials today due to its wide application prospects in the fields of electronic instruments, sensors, instruments, communications and automatic control. Structural magnetic polymer materials are still in the exploratory stage, the composite polymer magnetic materials are often due to the compatibility of magnetic powder and polymer substrates, especially with low polarity large varieties of polyolefin-based village is poor, It is difficult to obtain high-performance materials.To this end, this work first made of a magnetically active material such as ferrite and other carriers Ziegler-Natta catalyst, the use of in situ polymerization method, the polyolefin in situ on the surface of the magnetically active material , The first time obtained by this method is both different from the structural type, but also different from the composite state of the plastic state and rubber magnetic polyolefin materials performance test results show that the tensile strength and saturation magnetization are better than the general use Blend method obtained composite polyolefin magnetic material.