Simultaneously Improved Curing,Mechanical,Antioxidative Properties and Reduced ZnO Loading of Silica Filled NR Composites by Incorporation of Low-cost Crude Carbon Dots via Conventional Melt-milling Method  

作　　者：Chao-Ying Sun Hai-Jun Ji Li-Wei Li Hui Yang Xiao-Peng An Yi-Ping Chen Ming-Jian Han Can Jiang Li-Qun Zhang Peng Yu Run-Guo Wang 

机构地区：[1]State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing,100029,China [2]School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan,430205,China

出　　处：《Chinese Journal of Polymer Science》2024年第6期815-825,共11页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52103065,51988102 and 52273003);the scientific research fund of Wuhan Institute of Technology(No.K2021044).

摘　　要：Rubbers or elastomers play an important role in hi-tech technology and civilian daily life because of their unique and strategical properties.Generally,the rubber additives are essential components for rubbers’practical application.Nowadays,developing novel multifunctional additives has attracted increasing research attention.In this work,low-cost crude carbon dots(CCDs)were used as multifunctional additives for natural rubber/silica system(without any additional modification)through industrial compatible melt-mixing method.The results revealed that the CCDs could disperse well in the NR/silica system,and they could not only endow the rubber compound with excellent anti-aging capability due to CCDs’radical scavenging activity because of their plenty of nitrogen-containing species,but also improve the curing rate and mechanical performance of the rubber composite.Also,the CCDs could reduce the rolling resistance of the rubber composites(tanδvalue at 7%strain of the rubber composite could be decreased by 34%),which is promising for the application of energy-saving tire industry.Lastly,the addition of CCDs could effectively reduce the ZnO dosage by at least 40%in the rubber composite without deteriorating its performance.Overall,this work provides valuable guidance to develop novel cheap yet effective additives for the elastomer.

关 键 词：Natural rubber Crude carbon dots ANTIOXIDANT ZnO reduction VULCANIZATION 

分 类 号：TQ330.38[化学工程—橡胶工业] TB332[一般工业技术—材料科学与工程]