湖南大学学报（自然科学版）2024，Vol.51Issue(12)：203-210,8.DOI:10.16339/j.cnki.hdxbzkb.2024302
微晶石墨取代炭黑作为橡胶补强剂应用研究
Research on the Application of Microcrystalline Graphite Replacing Carbon Black as a Rubber Reinforcement Agent
摘要
Abstract
In response to the poor dispersibility of microcrystalline graphite(MG)as a rubber reinforcing agent,this paper selected 25%ethanol solution with similar surface tension to graphene as the ball milling solvent,and prepared MG ultrafine powder with a median particle size of 1.209 μm through ball milling method.By partially replacing carbon black(CB)as a reinforcing agent for natural rubber(NR),NR/CB/MG composites with better mechanical properties were obtained.The dispersion of MG and CB in the NR matrix was characterized using field emission scanning electron microscopy(SEM),and the effects of MG particle size and substitution amount on the properties of NR/CB/MG composites were studied.The results indicate that an appropriate amount of MG can promote the dispersion of CB in the NR matrix and shorten the positive vulcanization time of NR/CB/MG composites;The finer the particle size of MG,the better the mechanical properties of NR/CB/MG composites.Compared with NR/CB composites,its tensile strength,tear strength,100%elongation stress,and 300%elongation stress are increased by 6.3%,7.5%,8.4%,and 6.4%,respectively.The fatigue temperature is risen and the permanent deformation rate is decreased by 2.5%and 44.7%,respectively.关键词
球磨法/微晶石墨超细粉/天然橡胶/分散性/表面张力Key words
ball milling method/superfine powder microcrystalline graphite/natural rubber/dispersion/surface tension分类
化学化工引用本文复制引用
胡爱平,黄飞,陈小华..微晶石墨取代炭黑作为橡胶补强剂应用研究[J].湖南大学学报（自然科学版）,2024,51(12):203-210,8.基金项目
国家自然科学基金资助项目(51971089),National Natural Science Foundation of China(51971089) （51971089）
