织物表面层层组装微波吸收膜的快速构筑及其精确调控

The optimization of conversion process from electromagnetic energy to heat is the critical issue to improve efficiency of microwave-absorbing coatings for electromagnetic protection. Microwave-absorbing films on fabrics will be prepared by using layer-by-layer (LbL) assembly technique, which is capable of precisely tailoring film structure and compositions. The efficiency of microwave-absorbing films is expected to be conveniently controlled by adjusting film deposition parameters. To improve the efficiency of microwave-absorbing coatings, we will explore the effects of the film compositions and structure on their microwave-absorbing properties materials. In the project, mechanically stable microwave-absorbing films will be built by spraying-assisted LbL assembly of electrical loss absorbents with partner polymers having complementary interactions with absorbents. The stability, charge transfer process and electromagnetic conversion behaviors of microwave-absorbing films will be systematically evaluated in dynamics and thermodynamics. The influence of various functions on the microwave-absorbing process will be further raveled. This project will expand the applications of spary-assisted LbL assembly to microwave-absorbing fabrics,and provide a deep insight into the relationships between the structures and properties of microwave-absorbing films, which is of fundamental and practical significance for the rational design and construction of microwave-absorbing materials on fabrics.

如何改善微波吸收材料对电磁辐射的转化过程，是提高吸波涂层利用效率、制备高效电磁防护材料的关键问题。本项目以提高微波吸收效率为目的，利用具有普适性、可精细调控的层层组装成膜技术，探讨膜结构和组分对吸波性能的影响规律，寻求高效微波吸收织物的可控制备。运用喷涂方式快速构筑稳定的电损耗型微波吸收功能膜，实现织物的吸波功能；通过聚合物体系的调控改变膜的组成与结构，从微波吸收的动力学和热力学角度探究膜的微结构与吸波材料的稳定性、电子传输过程、电磁转化行为之间的内在联系；研究其它功能的引入对微波吸收过程的影响规律，提高吸波膜的功能兼容性。本项目拓展了喷涂式层层组装技术在纺织领域的应用，从微观层面深入认识了吸波材料的结构与吸波性能的内在联系，对促进纳米吸波材料的发展和应用具有重要意义。

如何改善微波吸收材料对电磁辐射的转化过程，是提高吸波涂层利用效率、制备高效电磁防护材料的关键问题。本项目以提高微波吸收效率为目的，利用具有普适性、可精细调控的层层组装成膜技术，探讨膜结构和组分对吸波性能的影响规律，寻求高效微波吸收织物的可控制备。运用喷涂方式快速构筑稳定的电损耗型微波吸收功能膜，实现织物的吸波功能；通过聚合物体系的调控改变膜的组成与结构，从微波吸收的动力学和热力学角度探究膜的微结构与吸波材料的稳定性、电子传输过程、电磁转化行为之间的内在联系；研究其它功能的引入对微波吸收过程的影响规律，提高吸波膜的功能兼容性。本项目拓展了喷涂式层层组装技术在纺织领域的应用，从微观层面深入认识了吸波材料的结构与吸波性能的内在联系，对促进纳米吸波材料的发展和应用具有重要意义。