无溶剂纳米流体的流变行为与应用研究进展  

Advancements in the Rheological Behavior and Practical Applications of Solvent-free Nanofluids

作　　者：殷先泽 杨诗文 宋义虎[2] 郑强[2] Xian-ze Yin;Shi-wen Yang;Yi-hu Song;Qiang Zheng(State Key Laboratory of New Textile Materials and Advanced Processing Technology,College of Materials Science and Engineering,Wuhan Textile University,Wuhan 430073;MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027)

机构地区：[1]纺织新材料与先进加工技术国家重点实验室、武汉纺织大学材料科学与工程学院,武汉430073 [2]高分子合成与功能构造教育部重点实验室、浙江大学高分子科学与工程学系,杭州310027

出　　处：《高分子学报》2024年第12期1648-1667,共20页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号51790503,U1908221,51873190,52103062,52273041)资助.

摘　　要：无溶剂纳米流体是由无机或有机纳米粒子核及锚定在其表面冠状层组成的具有类液行为的纳米材料,是一种宏观均匀体系,具有无挥发性、纳米核分散稳定性、流变可控性和结构可调性等特点.然而,无溶剂纳米流体结构和流变调控原理关系尚不明确.本文综述了无溶剂纳米流体的设计原则和制备策略,从非均质动力学和冠状层分子构象及其转变等方面分析了冠状层受限动力学、应变局域化行为对无溶剂纳米流体类液-类固转变及类液体剪切变稀、类固体剪切屈服行为的影响机制,总结了纳米核、冠状层分子、冠状层链长、核-冠相互作用、温度及合成方式等因素对无溶剂纳米流体流变行为的影响,介绍了无溶剂纳米流体在导热、润滑、能源、气体分离、油水分离、生物医用等方面的研究进展.最后,总结了无溶剂纳米流体应用性能和使役稳定性研究所面临的挑战,提出了需要解决的关键科学问题.Solvent-free nanofluids are nanomaterials with liquid-like behavior consisting of inorganic or organic nanoparticle cores and a coronal layer anchored on their surface.It is a macroscopically homogeneous system characterized by non-volatility,nanocore dispersion stability,rheological controllability and structural tunability.However,the relationship between the structure of solvent-free nanofluids and the rheology regulation principle is still unclear.In this paper,we reviewed the design principles and preparation strategies of solvent-free nanofluids,analyzed the mechanisms of the restricted dynamics of the coronal layer,strain localization behavior on the liquidlike-solid-like transition and liquid-like shear thinning and solid-like shear yielding behaviors of solvent-free nanofluids in terms of non-homogeneous dynamics and coronal layer molecules conformation and their transformations,and summarized the effects of factors such as the coronal layer molecules,nanonuclei,nucleuscoronal interactions,and the length of coronal layer chains on the rheological behavior of solvent-free nanofluids.The research progress of solvent-free nanofluids in thermal conductivity,lubrication,energy,gas separation,oilwater separation,and biomedicine was introduced.Finally,we discussed the challenges on the application performance and service stability of solvent-free nanofluids,and puts forward the key scientific issues that need to be solved.

关 键 词：无溶剂纳米流体 微观结构 流变机理 分子构象 

分 类 号：TB383.1[一般工业技术—材料科学与工程]