论文部分内容阅读
固化环氧树脂是具有交联结构的玻璃态高聚物。根据前人对这类高聚物的研究,发现这种交联高聚物的交联网络是不均匀的。电子显微镜的研究表明,在固化环氧树脂中交联密度较高的微凝胶部分具有粒状体(Nodules)的基本结构单元,其粒径约为5～100nm,它分布于交联密度较低的基体(Matrix)之中,形成两相分离的结构。不过,多数电镜研究都需要用各种蚀剂技术配合,才能观察到这样的形态结构,而高聚物在蚀刻时有时会产生假象。也有人认为由蚀刻试样表面形貌得到的微相分离结构模型尚需进一步研究证实。考虑到固化环氧树脂中的多种功能团都能与四氧化钌发生化学反应,因而有可能用四氧化钌
Cured epoxy resins are glassy polymers with a crosslinked structure. According to previous studies of such polymers, the cross-linked network of such cross-linked polymers was found to be heterogeneous. Electron microscopy studies have shown that the cross-linked microgels in cured epoxy resins have the basic structural units of Nodules with a particle size of about 5 to 100 nm and are distributed in the lower crosslink density In the matrix, a two-phase structure is formed. However, most electron microscopy studies need to use a variety of etching techniques in order to observe such a morphological structure, and polymers sometimes give rise to artifacts during etching. Some people think that the surface morphology of the sample obtained by etching the micro-phase separation structure model needs further study confirmed. Considering that various functional groups in the cured epoxy resin can chemically react with ruthenium tetroxide, it is possible to use ruthenium tetroxide