硫化天然橡胶超疏水表面的微纳结构设计与构筑  

Design and construction of micro-nano structures for superhydrophobic surface of cured natural rubber materials

作　　者：石晓凯 杜宇 吴玥桥 孙举涛[1,2] SHI Xiaokai;DU Yu;WU Yueqiao;SUN Jutao(School of Polymer Science and Engineering,Qingdao University of Science & Technology,Qingdao 266042,China;Anhui Provincial Key Laboratory of Environment-friendly Polymer Materials,Anhui University,Hefei 230601,China)

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042 [2]安徽大学安徽省绿色高分子材料重点实验室,安徽合肥230601

出　　处：《弹性体》2019年第1期1-5,共5页China Elastomerics

基　　金：山东省重点研究开发项目(2018GSF117019);青岛科技大学橡塑材料与工程教育部重点实验室开放课题(KF201704)

摘　　要：以硫化后的天然橡胶(NR)材料为基体,将其在一定的溶剂中溶胀,然后采用溶胶-凝胶技术使纳米SiO_2颗粒在橡胶溶胀层和表面原位生成、生长,在硫化NR表面构筑出类似荷叶的微纳米结构,达到使NR表面超疏水化的目的。通过调控影响溶胶-凝胶反应的溶胀剂和反应剂的种类及浓度,控制硫化NR表面的微纳米结构的尺寸和形态,并对比分析不同的微纳米结构对硫化NR表面疏水性能的影响。结果表明,采用正丁胺作为溶胀剂,在正硅酸乙酯(TEOS)试剂中发生溶胶-凝胶反应,用硬脂酸(SA)对硫化NR表面修饰,成功使硫化NR表面超疏水化,其水接触角达到153.5°。扫描电镜(SEM)测试表明,硫化NR表面形成了"类荷叶"的高粗糙度SiO_2微纳米复合结构。It was desirable to construct micro/nano structures similar to lotus leaf on the surface of cured natural rubber(NR)so as to make cured NR superhydrophobic.The cured NR was pre-swollen in certain solvents,and then SiO2 nanoparticles were in-situ generated and grown in swollen layer or on the surface of cured NR through a sol-gel technology.The sizes and morphology of micro/nano structures on cured NR surface were controllable by adjusting the kinds and concentrations of swelling agents.Meanwhile,the effects of different micro/nano structures on the hydrophobic properties of cured NR surface were compared and analyzed.The results showed that the sol-gel reaction occurred and generated SiO2 particles in the tetraethyl orthosilicate(TEOS)reagent when using n-butyl amine as the swelling agent.The surface of cured NR successfully became superhydrophobic and the water contact angle reached 153.5° after a modification of stearic acid(SA).The scanning electron microscopy(SEM)showed that the surface of cured NR formed“lotus leaf-like”SiO2 micro/nano composite structures with high degree of roughness.

关 键 词：天然橡胶 超疏水 溶胶-凝胶反应 微纳结构 

分 类 号：TQ332[化学工程—橡胶工业]