论文部分内容阅读
研究了天然橡胶分别在含石英砂的清水、聚丙烯酰胺溶液和氢氧化钠溶液冲击作用下磨粒侵蚀过程中所发生的表面化学效应，并且利用扫描电子显微镜、Ｘ射线光电子能谱仪和傅立叶表面红外仪，对天然橡胶在磨损前后的表面形貌、元素的化学状态和官能团进行了观察与分析．发现天然橡胶在磨粒侵蚀下发生的表面化学效应主要是其分子链的力裂解和氧化降解，在聚丙烯酰胺溶液中还发生了Ｓ－Ｓ交联键断裂，在清水中的主要氧化产物是含碳氧单键和碳氧双键的聚合物，在聚丙烯酰胺溶液和氢氧化钠溶液中的氧化产物都含有碳氧单键、羰基和羧基等．
The surface chemical effects of the natural rubber in abrasive erosion process of quartz sand water, polyacrylamide solution and sodium hydroxide solution were studied respectively. And the effect of surface chemical on the surface chemical properties was analyzed by scanning electron microscopy, X-ray photoelectron spectroscopy and Fourier transform Surface infrared instrument, the surface morphology of natural rubber before and after wear and tear, the chemical state of the elements and functional groups were observed and analyzed. It is found that the surface chemical effect of natural rubber under abrasive erosion is mainly due to the force cracking and oxidative degradation of its molecular chain. In the polyacrylamide solution, S-S cross-linking breaks also occur, and the main oxidation products in clean water are Polymers containing carbon and oxygen single bonds and carbon and oxygen double bonds, the polyacrylamide solution and sodium hydroxide solution oxidation products contain single carbon-oxygen bonds, carbonyl and carboxyl groups.