论文部分内容阅读
首先利用超声空化作用将炭黑团聚体破碎、切割、分散在水中制得炭黑悬浮液,然后在高速射流场中,炭黑悬浮液被高速射流卷吸到天然胶乳中,在射流边界,由于二者存在极大的速度差,而形成一个湍流混合层,炭黑在湍流拉伸、剪切作用下微观分散到天然胶乳中.结果表明,与传统干法工艺相比,射流工艺可以使炭黑更均匀的分散到天然橡胶基体中.Payne效应结果表明射流工艺减弱了炭黑与炭黑之间的相互作用,增强了炭黑与橡胶之间的相互作用.同时射流工艺制备的复合材料硫化时间变短,硫化程度增加,硫化胶的撕裂强度提高了78%,回弹性提高了20%,DIN磨耗减小了33%.动态力学性能结果表明,射流工艺制备的复合材料在60℃左右具有更低的损耗因子.
Firstly, the carbon black aggregates are crushed, cut and dispersed in water to obtain the carbon black suspension by ultrasonic cavitation. Then, in the high-speed jet field, the carbon black suspension is entrained into the natural latex by the high-speed jet stream. At the jet boundary, Due to the great velocity difference between the two, a turbulent mixing layer was formed, and the carbon black dispersed microscopically into the natural rubber latex under the turbulent stretching and shearing.The results show that compared with the traditional dry process, the jet process can make The carbon black dispersed more evenly into the natural rubber matrix.Payne effect results show that the jet process weakens the interaction between carbon black and carbon black and enhances the interaction between carbon black and rubber.At the same time jet technology prepared composite The vulcanization time is shortened and the degree of vulcanization is increased, the tear strength of the vulcanizates is increased by 78%, the rebound resilience is increased by 20% and the DIN abrasion is reduced by 33% .Dynamic mechanical properties The results show that the jet composites prepared at 60 ℃ There is a lower loss factor around.