摘要
应用硅烷偶联剂对粘土填料进行表面处理,可改善填料与橡胶基体界面的物化性质,提高补强度。本文应用红外分光光度计,研究硅烷偶联剂对高岭土、伊利石等粘土矿粉的表面改性作用。指出这些粘土矿粉经偶联剂处理后的红外吸收光谱,在铝羟基振动频带的吸收峰发生明显变化,偶联剂分子的水解基团与粘土表面的活性基团发生键合,使粘土表面有效改性。这种改性的粘土填料对橡胶有较好的补强效果。
Clay mineral fines are the principal filler in rubber industry. It is shown that the interface of clay filler and rubber base can be modified hoth in its physical and chemical properties by applying silane coupling agent to the sarface of clay filler, the strengthening effect of which can then be promoted. By means of IR spectrophotometer, the authors study the modifying action of silane coupling agent on the surface of clay mineral fines including kaolin and illite. In IR spectra of kaolin and illite which treated by coupling agent, the shifts of absorption peaks of aluminium hydroxyl vibrational band are observed. This may account for the bonding between the hydrolyzable group of coupling agent molecule and the active group on the clay fines surface, and thereby the effective modifying of clay fines surface. The clay filler has a fairly good strengthening effect to the rubber when it is modified by silane coupling agent.
出处
《华侨大学学报（自然科学版）》
CAS
1990年第3期278-283,共6页
Journal of Huaqiao University(Natural Science)
基金
国家自然科学基金
