磁性液体是一种特殊的高分子稳定胶体,在磁场中会产生光的双折射效应,对磁性液体在胶体学科方面展开研究,发现磁性液体在磁场中的弱絮凝行为表现异常明显,显示出特有的方向性,且又不至胶体系统失稳,证明了磁性液体中的磁性微粒在磁场中聚集成方向性的链状而又不失稳的临界状态存在。从而揭示了方向性弱絮凝是磁性液体在磁场中产生光的双折射效应的机理。 Magnetic fluid is a kind of special macromolecule stabilizing colloid, which will produce the birefringence effect of light in the magnetic field. The study on the colloidal science of the magnetic fluid is carried out. It is found that the weak flocculation behavior of the magnetic fluid in the magnetic field is abnormal, It is proved that the magnetic particles in the magnetic fluid accumulate in the magnetic field in the direction of the chain without the destabilization of the critical state. It is revealed that the directionally weak flocculation mechanism is the birefringence effect of the magnetic liquid in the magnetic field.