摘要
采用液相原位修饰技术,制备了表面接枝有机硅烷的纳米SiO2(HB-2200)、表面接枝氨基的纳米SiO2(HB-2205N)、表面接枝不饱和双键的纳米SiO2(HB-2205D)、表面接枝氨基和双键的纳米SiO2(HB-2205ND)。利用TEM、SEM、流变仪对纳米SiO2/溶液聚合丁苯橡胶-顺丁橡胶(SSBR-BR)复合材料的结构和性能进行表征。结果表明:与未改性的纳米SiO2相比,表面功能化纳米SiO2与橡胶基体相容性改善,Payne效应降低,纳米SiO2之间的相互作用减弱,其在SSBR-BR复合材料中的分散性提高。HB-2200/SSBR-BR复合材料的混炼扭矩降低了35.7%,混炼能耗降低了15%,结合胶含量增加,填料/橡胶之间的界面结合作用增强,拉伸强度提高了60%。动态热力学和磨耗性能分析表明:纳米SiO2表面引入可反应性双键(HB-2205D),使HB-2205D/SSBR-BR复合材料的抗湿滑性能提高了40%,滚动阻力降低了43%。纳米SiO2表面接枝可反应性双键,可在不牺牲HB-2205D/SSBR-BR复合材料耐磨性能的基础上,降低其滚动阻力,提高其抗湿滑性能,为高性能轮胎的制备提供基础原材料。
A series of nano SiO2 grafted with organosilane(HB-2200),nano SiO2 grafted with amino(HB-2205N),nano SiO2 grafted with double bond(HB-2205D)and nano SiO2 grafted with amino-double bond(HB-2205ND)groups were prepared through liquid phase in-situ surface modification method.The structure and properties of nano SiO2/solution polymerized styrene butadiene rubber-polybutadiene rubber(SSBR-BR)composites were characterized by TEM,SEM and rheometer.The results show that compared with the unmodified nano SiO2,the compatibility between surface functionalized nano SiO2 and rubber matrix is improved,Payne effect is reduced,the interaction between nano SiO2 is weakened,and the dispersion of nano SiO2 in SSBR-BR is improved.Compared with nano SiO2/SSBR-BR composite,the mixing torque of HB-2200/SSBR-BR composite is reduced by 35.7%,the mixing energy consumption is saved by 15%,the interfacial bond between the filler and the rubber is strengthened due to the increase in the content of bound rubber,and its tensile strength is increased by 60%.The dynamic mechanical and abrasion performance analyses show that the reactive double bond group grafted on the surface of SiO2 could improve the wet slip resistance of HB-2205D/SSBR-BR composite by 40%and reduce the rolling resistance by 43%.Nano SiO2 surface grafted with reactive double bond could reduce its rolling resistance and improve its resistance to wet slip,without sacrificing the wear resistance of HB-2205D/SSBR-BR composite.It provides the basic raw materials for the preparation of high-performance tires.
作者
田庆丰
唐源
刘亚兰
张春华
丁涛
李小红
张治军
TIAN Qingfeng;TANG Yuan;LIU Yalan;ZHANG Chunhua;DING Tao;LI Xiaohong;ZHANG Zhijun(National&Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials,Henan University,Kaifeng 475004,China;Flame Retardan and Functional Materials Engineering Laboratory of Henan Province,College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,China;Engineering Research Center for Nanomaterials Co.Ltd.Henan University,Jiyuan 459000,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2020年第7期1703-1712,共10页
Acta Materiae Compositae Sinica
基金
河南省科技攻关项目(192102210190)
河南大学双一流学科培育项目(2018YLZDCG04,2018YLZDYJ14)
河南大学研究生教育创新与质量提升计划(SYL18060147)
济源市科技发展计划科技攻关项目(19022015)。
