MXene基褶皱薄膜的制备及其三模态红外调控性能研究  

Preparation of MXene-based crumpled film and the tri-mode infrared modulation properties

作　　者：李清洲 侯成义 张青红[1] 李耀刚[1] 王宏志[1] 李克睿 LI Qingzhou;HOU Chengyi;ZHANG Qinghong;LI Yaogang;WANG Hongzhi;LI Kerui(College of Materials Science and Engineering,Donghua University,Shanghai,China)

机构地区：[1]东华大学材料科学与工程学院,上海

出　　处：《东华大学学报(自然科学版)》2025年第1期8-14,共7页Journal of Donghua University(Natural Science)

基　　金：国家重点研发计划(2022YFB3902700)。

摘　　要：绝对零度以上的物体均辐射红外能量,通过调控辐射的方式,可实现目标红外隐身或热管理,该技术已广泛应用于航天器组件、伪装平台、防护服及容器包装等领域。然而,目前基于温度场、电场及机械应变的热辐射红外调控技术,仅能实现高发射-低发射或高反射-高透过两种模式间的切换,尚缺乏三模态间的灵活调控。采用苯乙烯嵌段共聚物苯乙烯-丁二烯-苯乙烯(SBS)和苯乙烯-乙烯-丁烯-苯乙烯(SEBS)作为弹性体基底,碳化钛(Ti_(3)C_(2)T_(x)MXene)作为红外调控层,通过预拉伸法制备褶皱MXene/SEBS-SBS三模态红外调控薄膜,对不同应变状态下的复合薄膜进行了微观形貌观察及红外光谱分析,旨在探究其红外性能与所施加应变之间的关联。研究结果表明:MXene薄膜的引入显著提高了SEBS-SBS弹性基底的断裂伸长率(475%)和拉伸强度(0.52 MPa)。在机械应变作用下,复合薄膜的微观结构发生变化,从而在中远红外波段实现了调控效果:发射率由0应变时的0.40降至100%应变时的0.26,而透过率则由100%应变时的0.56%显著提升至200%应变时的24%。这一发现为红外调控技术提供了新思路。Objects above absolute zero emit infrared energy,and using radiation modulation can achieve target infrared stealth or heat management,which has been widely used in aerospace components,camouflage platforms,protective clothing,container packaging,and other fields.However,thermal radiation infrared modulation based on temperature field,electric field,and mechanical strain can only switch between two modes:high emission-low emission or high reflection-high transmission,lacking flexible regulation among three modes yet.This study used styrene-butadiene-styrene(SBS)and styreneethylene-butene-styrene(SEBS)copolymers as elastic materials,titanium carbide(Ti_(3)C_(2)T_(x)MXene)as infrared control layer and preparing crumpled MXene/SEBS-SBS tri-mode infrared regulation films by pre-stretching,micro-morphology and infrared spectroscopy analysis of composite films under different strains were conducted to study the relationship between the infrared performance of composite films and the applied strain.The results show that the introduction of MXene film can effectively enhance the fracture elongation(475%)and tensile strength(0.52 MPa)of SEBS-SBS elastic substrates;under mechanical strain,the composite film undergoes mid-far infrared modulation due to changes in microstructure.The emissivity is reduced from 0.40 at 0 strain to 0.26 at 100%strain,while the transmittance is significantly increased from 0.56%at 100%strain to 24%at 200%strain.This finding provides a new idea for infrared modulation technology.

关 键 词：MXene 褶皱结构 三模态 红外调控 

分 类 号：TB34[一般工业技术—材料科学与工程]