摘要
采用3-氰基丙基三乙氧基硅烷(CTOS)对二氧化硅(SiO2)进行了氰基化改性,并采用热溶剂法将纳米ZnO沉积于氰基官能化SiO2(SiO2-CN)表面,制备出纳米氧化锌/二氧化硅杂化体(ZnO@SiO2),并使用X射线衍射仪、傅里叶变换红外光谱仪、扫描电镜等对杂化结构进行表征。将ZnO@SiO2作为填料添加入天然橡胶中制备复合材料(NR/ZnO@SiO2),然后对ZnO@SiO2与橡胶的界面关系进行了分析,并研究了ZnO@SiO2对橡胶复合材料的硫化特性、力学性能的影响。结果表明,纳米ZnO成功沉积在SiO2-CN表面,并且NR/ZnO@SiO2复合材料表现出优异的机械性能和硫化特性。与天然橡胶相比,仅添加5份杂化体的NR/ZnO@SiO2复合材料的拉伸强度、100%定伸及300%定伸强度分别增加了150.2%、86.2%和65.5%,并且正硫化时间缩短了38.5%。
SiO2 particles were cyano-functionalized by 3-cyanopropyltriethoxysilane(CTOS),and ZnO/SiO2 hybrids(ZnO@SiO2) were produced by deposition of the ZnO nanoparticles on cyano-functionalized SiO2(SiO2-CN) surface via a facile solvothermal method.The hybrid structures were analyzed by X-ray diffractometer,Fourier transform infrared spectrometer and scanning electron microscope.ZnO@SiO2 was used as a filler to prepare NR/ZnO@SiO2 composites,and the interface relationship between ZnO@SiO2 and rubber was studied.In addition,the influence of ZnO@SiO2 on the vulcanization characteristics and mechanical properties of rubber composites was analyzed.As a result,ZnO nanoparticles was successfully deposited on the surface of SiO2-CN,and NR/ZnO@SiO2 composites exhibited excellent mechanical properties and vulcanization characteristics.Compared with natural rubber,the tensile strength,stress at100% strain,and stress at 300% strain of NR/ZnO@SiO2 composites with 5 phr hybrids were superlatively increased by 150.2%,86.2% and 65.5%,respectively,and the curing time was reduced by 38.5%.
作者
李宜航
熊玉竹
张清坡
吴江兵
LI Yihang;XIONG Yuzhu;ZHANG Qingpo;WU Jiangbing(College of Materials and Metallurgy,Guizhou University,Guiyang 550025,Guizhou,China;Guizhou Province Engineering Laboratory for Rubber Composites,Guizhou University,Guiyang 550025,Guizhou,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2020年第8期3213-3220,共8页
Chemical Industry and Engineering Progress
基金
国家自然科学基金(51663003)
贵州省科技计划([2019]2166)。
关键词
纳米氧化锌
二氧化硅改性
杂化结构
橡胶复合材料
zinc oxide nanoparticles
silica modification
hybrid structure
rubber composites
