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一、引言磁场和热、光、压力等一样,是控制化学反应的一种手段,例如可用磁场控制苯乙烯乳液聚合所得聚合物的平均分子量。磁场对于磁化率各向异性的聚合物分子,可使其取向而影响反应性能,如在均匀静磁场下固化环氧和酚醛树脂,由于分子结构及网络结构的变化,可使固化树脂的体积电阻率提高1～2个数量级。磁场还能影响结晶性聚合物的结晶
I. INTRODUCTION Magnetic fields, like heat, light and pressure, are a means of controlling chemical reactions. For example, the average molecular weight of a polymer obtained by emulsion polymerization of styrene can be controlled by a magnetic field. Magnetic field For the magnetic anisotropy of the polymer molecules can be oriented and affect the reaction performance, such as uniform static magnetic field curing epoxy and phenolic resin, due to changes in molecular structure and network structure, the cured resin volume resistance Rate increased by 1 to 2 orders of magnitude. The magnetic field can also affect the crystallization of the crystalline polymer