摘要
将天然胶乳(NRL)、氧化石墨烯(GO)分散液与SiO_2悬浮液3种液体通过机械搅拌充分混合,在高压气相雾化作用下,混合液先被打散成微小液滴,形成一次破碎;该液滴后经高温金属板表面溅射爆破,形成二次破碎,达到分散效果,然后液滴被瞬间脱水干燥获得GO-SiO_2/天然橡胶(NR)母胶。GO与SiO_2在雾化、溅射和爆破作用下,在NR中达到微观分散效果。结果表明,与普通絮凝湿法混炼工艺相比,雾化溅射干燥工艺可以使GO和SiO_2在NR基体中分散更均匀。Payne效应结果表明:雾化溅射工艺减弱了GO片层与SiO_2间的相互作用。雾化溅射干燥工艺制备的GO-SiO_2/NR硫化胶的拉伸强度提高了13.6%,撕裂强度提高了31.5%,耐磨性能提高了16.7%;动态力学性能结果表明,用该工艺制备的GO-SiO_2/NR复合材料在60℃左右损耗因子更低。
Natural latex（NRL）,graphene oxide（GO）and SiO2 suspension were fully mixed by mechanical stirring and the mixture was broken into small droplets by high pressure spraying firstly.Then the droplets sputtered and blasted after attaching high temperature metal surface,which led to further crushing to achieve ideal dispersion effect.The water in droplets was rapidly evaporated by flash drying and GO-SiO2/natural rubber（NR）masterbatch was prepared.Under the effect of spraying,sputtering and blasting,GO and SiO2 could achieve micro dispersion in NR matrix.The results show that GO and SiO2 are uniformly dispersed in the NR matrix by spray sputtering drying method,compared with the properites of GO-SiO2/NR composites prepared by common latex compounding method.Payne effect shows that the interaction between GO and SiO2 is weakened by spray sputtering drying method.The tensile strength,tear strength and abrasion resistance of the GO-SiO2/NR composites prepared by spray sputtering drying method increase by 13.6%,31.5% and 16.7% respectively.The dynamic mechanical results show that the GO-SiO2/NR composites prepared by spray sputtering drying method has lower loss factor at about 60℃.
作者
汪传生
刘洁
宋凤鹏
边慧光
胡亚菲
梁栋
WANG Chuansheng;LIU Jie;SONG Fengpeng;BIAN Huiguang;HU Yafei;LIANG Dong(College of Electromechanical Engineering,Qingdao University of Science and Teaehnology,Qingdao 266100,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2018年第8期2116-2123,共8页
Acta Materiae Compositae Sinica
基金
山东省成果转化(2014CGZH0405)
山东省科技发展计划(2013TD16006)
山东省高等学校科技计划(J15LB73)
青岛市应用基础研究计划(16-5-1-100-jch)
