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用溶液沉淀法,制备均分散胶体粒子,其关键在于迅速地成核和有效地控制粒子的成长.使用经典的加热方法,体系中总有温差存在,故对均分散粒子的制备不利.微波加热原理有所不同.当极性分子处于高频电场中时,耦极子要发生定向极化和转向运动.但是,由于分子间的相互作用和分子的热运动,使得分子的转向运动,相对于外电场的变化有一个滞后,这种滞后称之为“松弛”.松弛的宏观结果就是把电磁能转变为分子的动能,从而使体系的温度
The solution precipitation method, the preparation of uniform dispersion of colloidal particles, the key lies in the rapid nucleation and effective control of particle growth using the classical heating method, the system there is always a temperature difference, it is unfavorable for the preparation of homogenized particles. Principle is different when the polar molecules in the high-frequency electric field, the dipole polar polarizations and steering to occur.However, due to molecular interactions and molecular thermal motion, making the molecular steering motion, relative to the The change in the external electric field has a hysteresis, which is called “relaxation.” The macroscopic relaxation of relaxation is the conversion of electromagnetic energy into kinetic energy of the molecule, so that the temperature of the system