聚苯胺和聚吡咯导电高分子吸波材料进展

介绍了吸波材料的吸波机理及分类,总结了近年来导电高分子在电磁屏蔽领域的研究进展。重点概述了基于聚苯胺(PANI)、聚吡咯(PPy)的两大类导电高分子复合吸波材料,着重强调导电高分子组分的引入在一定程度上增强材料的介电损耗与电阻损耗,提高匹配阻抗,极大地改善材料吸波性能,最后指出导电高分子吸波材料的发展趋势。     

导电电磁屏蔽塑料研究新进展

介绍了电磁屏蔽的基本理论,重点综述了3类主要的导电塑料即:表层导电型复合塑料、填充型复合塑料和本征导电高分子材料的研究应用现状,介绍了各类导电高分子电磁屏蔽材料的特点,并对其发展趋势做了展望。     

导电有机高分子材料研究进展

综述了近年来国内外导电有机高分子材料研究进展情况。论述了聚苯胺、聚噻吩、聚吡咯及其衍生物等导电有机高分子材料的制备方法和性质。介绍了导电有机高分子材料的实际应用领域。     

导电高分子材料研究进展

与传统导电材料相比较，导电高分子材料具有许多独特的性能。导电高聚物可用作雷达吸波材料、电磁屏蔽材料、抗静电材料等。介绍了导电高分子材料的概念、分类、导电机理及其应用领域，综述了近些年来国内外科研工作者对导电高聚物的研究进展状况并对其发展前景进行了展望。     

导电高分子复合材料的电磁屏蔽效能分析

本文分析了电磁屏蔽的基本原理,着重探讨了导电填料、高分子基体以及复合工艺等因素对导电高分子复合材料电磁屏蔽效能的影响。     

聚吡咯—氯化聚乙烯导电材料的制备

采用现场化学氧化聚合方法,制得性能优良的粉末状聚吡咯(PPY)-氯化聚乙烯(CPE)导电材料。对合成反应的各种影响因素进行了研究,并考查了导电材料的某些性能。该导电材料具有较好的加工稳定性,可望用于电磁屏蔽等领域。     

碳纤维/聚合物复合材料的导电性及电磁屏蔽性能的研究

系统介绍了碳纤维（ＣＦ）与各种高分子材料（ＰＶＣ糊树脂、木质纤维、ＥＶＡ乳液、氯丁胶乳、ＰＰ、ＰＥ）的导电性能及电磁屏蔽性能。指出，其性能与ＣＦ的含量、长径比及电磁波本身频率有关，制得了各种有广泛应用价值的ＣＦ导电纸及抗静电高分子电热材料和电磁屏蔽材料。     

聚吡咯一氧化聚乙烯导电材料的制备

采用现场化学氧化聚合方法，制得性能优良的粉末状聚吡咯（ＰＰＹ）一氧化聚乙烯（ＣＰＥ）导电材料。对合成反应的各种影响因素进行了研究，并考查了导电材料的某些性能，该导电材料具有较好的加工稳定性，可望用于电磁屏蔽等领域。     

产品开发

正复合型导电高分子材料成研发热点复合型导电高分子材料由于导电性、稳定性、加工性等方面具有明显优势,成为研究开发热点,是一种发展迅速、应用广泛的导电材料。复合型导电高分子材料主要有:(1)共混复合型导电高分子材料:①聚苯胺复合材料;②聚吡咯复合材料;③聚噻吩复合材料。(2)填充复合型导电高分子材料:①碳系填充型导电高分子材料;②金属填充型导电高分子材料;③金属氧化物填充型导电高分子材料。复合型导电高分子     

导电性高分子复合材料

综述了导电性高分子复合材料的发展。介绍了分类、导电机理,材料组成的优化设计,多种导电材料和树脂基体组成的电磁屏蔽复合材料、防静电复合材料的性能及应用。     

EMI shielding: Methods and materials—A review

The growth in the application of electronic devices across a broad spectrum of military, industrial, commercial and consumer sectors has created a new form of pollution known as noise or radio frequency interference (RFI) or electromagnetic radiation or electromagnetic interference (EMI) that can cause interference or malfunctioning of equipment. Therefore, there is a greater need for the effective shielding of components from its adverse effects. This review surveys the shielding materials like metals, conducting plastics and conducting polymers for the control of electromagnetic radiations. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

One-dimensional conducting polymer nanocomposites: Synthesis, properties and applications

Intrinsically conducting polymers have been studied extensively due to their intriguing electronic and redox properties and numerous potential applications in many fields since their discovery in 1970s. To improve and extend their functions, the fabrication of multi-functionalized conducting polymer nanocomposites has attracted a great deal of attention because of the emergence of nanotechnology. This article presents an overview of the synthesis of one-dimensional (1D) conducting polymer nanocomposites and their properties and applications. Nanocomposites consist of conducting polymers and one or more components, which can be carbon nanotubes, metals, oxide nanomaterials, chalcogenides, insulating or conducting polymers, biological materials, metal phthalocyanines and porphyrins, etc. The properties of 1D conducting polymer nanocomposites will be widely discussed. Special attention is paid to the difference in the properties between 1D conducting polymer nanocomposites and bulk conducting polymers. Applications of 1D conducting polymer nanocomposites described include electronic nanodevices, chemical and biological sensors, catalysis and electrocatalysis, energy, microwave absorption and electromagnetic interference (EMI) shielding, electrorheological (ER) fluids, and biomedicine. The advantages of 1D conducting polymer nanocomposites over the parent conducting polymers are highlighted. Combined with the intrinsic properties and synergistic effect of each component, it is anticipated that 1D conducting polymer nanocomposites will play an important role in various fields of nanotechnology.     

Recent advances in mechanism,influencing parameters,and dopants of electrospun EMI shielding composites: A review

The rapid development and popularization of smart and portable electronic devices have led to increasingly related electromagnetic pollution affecting human health and equipment safety. Thus, designing high-performance electromagnetic interference (EMI) shielding materials with lightweight, flexible, and easy preparation is urgent. The intrinsic physiochemical properties of electrospun micro/nanofibers provide an attractive potential to ease and accelerate the next-generation EMI shielding materials. Here, a detailed review of the electrospun EMI shielding materials is established. First, this article outlines the shielding mechanism of EMI shielding materials obtained via electrospinning. Then, the affecting factors of electrospinning process conditions on the resulting EMI shielding micro/nanofibers are discussed. Next, diverse fillers that contribute to the EMI shielding efficiency of electrospun materials are demonstrated. Finally, the conclusion and prospects are introduced, hopefully contributing to assisting with more comprehensive and rational designs of high-performance electrospun fiber-based EMI shielding for various applications. Priority measures and future directions are suggested for the future development of electrospun EMI shielding materials.     

Conducting polyaniline composite for ESD and EMI at 101 GHz

Conducting polyaniline forms an important family of electronic polymers with a developed potential application for a number of areas because of their flexible chemistry, processibility, environmental stability and ease of forming composites. The electromagnetic interference shielding effectiveness of conducting polyaniline (PANI)–ABS composites was studied at 101 GHz. It was observed that shielding effectiveness of the PANI–ABS composites increases with the increase in the loading levels of the conducting polymer doped with hybrid dopants. The lower loading of PANI doped with hybrid dopants in the moulded conducting composites can be effectively used for the dissipation of electrostatic charge. However, with higher loadings, a shielding effectiveness of 60 dB has been achieved which makes the conducting composites a potential EMI shielding material for its application in encapsulation of electronic equipments in electronic and in high tech applications.     

Facile Fabrication of PEDOT:PSS-Based Free-Standing Conducting Film for Highly Efficient Electromagnetic Interference Shielding

With the growing popularity of portable and wearable smart electronics, the electromagnetic shielding materials with high shielding effectiveness (SE) as well as light weight and excellent mechanical strength are in high. In this work, the PEDOT:PSS-based free-standing conducting film with superior conductivity and mechanical strength is prepared through a facile fabrication. The cellulose nanofibers (CNFs) are first introduced to induce an orderly grow and stack of the PEDOT grains. A phosphoric acid immersion process is then employed to remove the insulating CNF and PSS in the film. The obtained free-standing conducting film shows a record conductivity of 3508 S cm⁻¹ and its elongation at break reaches 3.75%. Encouragingly, the film delivers an excellent electromagnetic interference (EMI) shielding behavior with a SE of 49 dB in the X-band (8.2–12.4 GHz) at a thickness of 4 µm. The superior conductivity, mechanical strength, and high SE as well as its facile solution processability make this free-standing conducting film to be an attractive EMI material for portable and wearable smart electronics.     

2D Ti3C2Tx MXene/aramid nanofibers composite films prepared via a simple filtration method with excellent mechanical and electromagnetic interference shielding properties

Electromagnetic shielding (EMI) materials are becoming more and more important because of the increasingly serious radiation pollution. The preparation of high mechanical strength, ultrathin, lightweight, flexible materials with excellent EMI shielding performance have so far been elusive. Here, we try to prepare an ultrathin, lightweight and flexible film with excellent EMI shielding performance using one-dimensional aramid nanofibers (ANFs) and two-dimensional few-layered Ti₃C₂T_x through a simple filtration method. The ultimate tensile strength and strain of the film are up to 116.71 MPa and 2.64%. The EMI shielding effectiveness and the specific EMI shielding efficiency are 34.71 dB and 21971.37 dB cm² g⁻¹, which will be no recession after 1000 times bending. Our results show that a practical EMI shielding material with excellent performances has been successfully prepared, which will be widely applied in wearable electronics, robot joints, and precision instrument protection and so on.     

Revised Manuscript with Corrections: Polyurethane-Based Conductive Composites: From Synthesis to Applications

The purpose of this review article is to outline the extended applications of polyurethane (PU)-based nanocomposites incorporated with conductive polymeric particles as well as to condense an outline on the chemistry and fabrication of polyurethanes (PUs). Additionally, we discuss related research trends of PU-based conducting materials for EMI shielding, sensors, coating, films, and foams, in particular those from the past 10 years. PU is generally an electrical insulator and behaves as a dielectric material. The electrical conductivity of PU is imparted by the addition of metal nanoparticles, and increases with the enhancing aspect ratio and ordering in structure, as happens in the case of conducting polymer fibrils or reduced graphene oxide (rGO). Nanocomposites with good electrical conductivity exhibit noticeable changes based on the remarkable electric properties of nanomaterials such as graphene, RGO, and multi-walled carbon nanotubes (MWCNTs). Recently, conducting polymers, including PANI, PPY, PTh, and their derivatives, have been popularly engaged as incorporated fillers into PU substrates. This review also discusses additional challenges and future-oriented perspectives combined with here-and-now practicableness.     

In-situ growth of MAX phase coatings on carbonised wood and their terahertz shielding properties

Electromagnetic interference (EMI) shielding materials have received considerable attention in recent years. The EMI shielding effectiveness (SE) of materials d...