摘要
用射流胶乳混合法制备天然橡胶(NR)复合材料,并对复合材料性能进行研究。先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将炭黑微观分散到天然胶乳中制成NR复合材料。结果表明:与传统干法混炼工艺相比,射流胶乳混合工艺可以使炭黑更均匀地分散到NR基体中;射流胶乳混合工艺制备的复合材料硫化时间缩短,硫化程度增大,撕裂强度提高78%,回弹值提高20%,DIN磨耗量减小33%。
In this study, NR composites were prepared by latex jet mixing method and the properties of the composites were investigated. In the preparation process, ifrstly, the carbon black was dispersed in water by ultrasonic, and then in the ifeld of high speed jet, the pre-dispersed carbon black was mixed with NR latex to give the NR composites. Compared with the conventional blending process, carbon black was dispersed in NR matrix much better by using latex jet mixing process, the curing time of the compound was shortened, the degree of cure increased, the tear strength of the vulcanizate increased by 78%, the resilience was improved by 20%, and DIN abrasion loss decreased by 33%.
出处
《橡胶科技》
2014年第9期15-20,共6页
Rubber Science and Technology
基金
国家自然科学基金资助项目(50903030)
