EMI Shielding of the Hydrophobic, Flexible, Lightweight Carbonless Nano-Plate Composites

Abstract

The cost-effective spray coated composite was successfully synthesis and characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, and X-ray diffraction techniques. The one step synthetic strategy was used for the synthesis of nanoplates that have a crystalline nature. The composites are amorphous and hydrophobic with micron thickness (<400 m). The maximum contact angle showed by composite is 132.65° and have wetting energy of −49.32 mN m−1, spreading coefficient −122.12 mN m−1, and work of adhesion 23.48 mN m−1. The minimum thickness of synthesized nanoplate is 3 nm while the maximum sheet resistance, resistivity, and electrical conductivity of the composites are 11.890 ohm sq−1, 0.4399 Ω.cm−1, and 8.967 S.cm−1, respectively. The cobalt nanoplate coated non-woven carbon fabric (CoFC) possesses excellent sheet resistance, hydrophobic nature, and EMI shielding efficiency of 99.99964%. The composite can block above 99.9913% of incident radiation (X band). Hence, the composite can be utilized in application areas such as medical clothes, mobile phones, automobiles, aerospace, and military equipment.

Ultralight, Conductive Ti3C2Tx MXene/PEDOT:PSS Hybrid Aerogels for Electromagnetic Interference Shielding Dominated by the Absorption Mechanism

“…5−8 Therefore, it is of great necessity to develop such functional materials with high-efficiency EMI shielding. 9,10 During the past decades, the number of reports on sundry materials for EMI shielding has grown exponentially. Generally, there are two primary mechanisms for EMI shielding summarized below.…”

“…Along with the rapid growth of the types and quantities of electronic devices, electromagnetic waves are widely used in telecommunications and medical and military fields. − Electromagnetic interference (EMI) and pollution have become a big headache for human beings, which may cause significant harm to human health and proper operation of the devices. − Therefore, it is of great necessity to develop such functional materials with high-efficiency EMI shielding. , During the past decades, the number of reports on sundry materials for EMI shielding has grown exponentially. Generally, there are two primary mechanisms for EMI shielding summarized below.…”

Improving the EMI shielding of graphene oxide (GNO)-coated glass-fiber–GNO–MA-grafted polypropylene (PP) composites and nylon 1D–2D nanocomposite foams

“…Therefore, achieving EMC in electronic devices is crucial, and EMI shielding is carried out for different regions of electromagnetic radiation (S, C, X, Ku, and microwaves). 1–8…”

Analysis of Shielding Properties of Head Covers Made of Conductive Materials in Application to 5G Wireless Systems

“…In the literature, the shielding structures applied for the human body are studied for the case when the cell phone is the source of electromagnetic radiation [4][5][6], while the development of multipurpose shielding materials assumes a plane wave [7,8]. The research carried out with respect to interactions of electromagnetic waves with the human body shows that both construction and the materials used for the human body shield design influence its performance.…”

“…In the papers that focus on shielding material development, composites with improved conductivity are considered for this application. In [7], the electrical conductivity and electromagnetic shielding effectiveness of two biocomposites are studied by experimental testing and numerical models, and in [8], it is for carbonless nanoplate composites. This shows the potential of fiber-based materials in the application to electromagnetic shielding.…”