Abstract: A Method has been devised for staining with aqueous KMnO4 solution on one surface of any thick sample of rubber blends in which one or both consisting of unsaturated hydrocarbons for effective visualization of its morphology under the microscope. Experiments showed that the method is sensitive for incompatible blends such as NBR with EPDM, BR with LDPE or EVA/SBR/PE, and is applicable to compatible blends when mutual blending is not yet completed or dispersion is not satisfactory. The advantage of this method lies in its simple preparation, ease of operation, low cost and freedom from morphological distortion. The strongly contrasting pictures resulting from this method can be used for examining thick samples without the use of the phase-contrast microscope or the microtome. This method is thus expected to provide an effective means of quality control for mixing operations and of rapid measurement of homogeneity of dispersion.

摘要： 该文探索了用高锰酸钾水溶液对某些含有不饱和键的通用烃类橡胶的并用胶厚样品表面进行单面染色的方法,用显微镜观察并用胶相结构形态.实验表明,对相容性很小的、具有明显分离相的并用胶如丁腈胶和三元乙丙胶的并用,该法尤为灵敏;对相容性很大的、无明显分离相的并用胶如天然胶和顺丁胶的并用,当胶料分散不均匀时,该法仍很灵敏;对某些不饱和胶与饱和塑料并用的两相结构如顺丁胶与低密度聚乙烯并用,三相结构如乙烯-醋酸乙烯共聚物、丁苯胶、聚乙烯并用,该法也很灵敏.该法仪器简单、操作方便、染色药品无毒、反差强、形态无畸变、应用广,为工业上快速检查并用工艺及并用物分散的均匀程度提供一个简单有效的手段.