A two-step process for the preparation of thermoplastic polyurethane/graphene aerogel composite foams with multi-stage networks for electromagnetic shielding

Jiang, Qiuyue; Liao, Xia; Yang, Jianming; Gui, Wang; Chen, Jia; Tian, Chenxu; Li, Guangxian

doi:10.1016/j.coco.2020.100416

Cited by 55 publications

(22 citation statements)

References 29 publications

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“…Polymer foaming has been validated as an effective way to fabricate lightweight functional polymer composites [ 49 , 50 ]. Jiang et al [ 51 ] prepared thermoplastic polyurethane/graphene aerogel (TPU/GA) composites with super-low density by supercritical CO 2 foaming, where the porous structures were introduced into the composites, as shown in Figure 5 . When the GA content is only 2 wt%, the conductivity of the composites reaches up to 50 S/m and the EMI shielding value is about 34.3 dB, resulting from the interconnected graphene networks in TPU/GA composite foams.…”

Section: Common Conductive Carbon Materialsmentioning

confidence: 99%

A Review of Conductive Carbon Materials for 3D Printing: Materials, Technologies, Properties, and Applications

et al. 2021

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Carbon material is widely used and has good electrical and thermal conductivity. It is often used as a filler to endow insulating polymer with electrical and thermal conductivity. Three-dimensional printing technology is an advance in modeling and manufacturing technology. From the forming principle, it offers a new production principle of layered manufacturing and layer by layer stacking formation, which fundamentally simplifies the production process and makes large-scale personalized production possible. Conductive carbon materials combined with 3D printing technology have a variety of potential applications, such as multi-shape sensors, wearable devices, supercapacitors, and so on. In this review, carbon black, carbon nanotubes, carbon fiber, graphene, and other common conductive carbon materials are briefly introduced. The working principle, advantages and disadvantages of common 3D printing technology are reviewed. The research situation of 3D printable conductive carbon materials in recent years is further summarized, and the performance characteristics and application prospects of these conductive carbon materials are also discussed. Finally, the potential applications of 3D printable conductive carbon materials are concluded, and the future development direction of 3D printable conductive carbon materials has also been prospected.

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Section: Common Conductive Carbon Materialsmentioning

confidence: 99%

A Review of Conductive Carbon Materials for 3D Printing: Materials, Technologies, Properties, and Applications

et al. 2021

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“…The stress at fracture also has a similar change as function of filler. For elastomer‐based composite materials, internal fillers form abundant interfaces inner the matrix accompanied by large numbers of structural defects, which ravage the material's deformability 39,40 . Accordingly, in Figure 5(d), the axial deformation degree declines significantly with the elevated carbon tube content, decreasing from 282% to 156%, to 47%, and later to 33% of M‐9.1%.…”

Section: Resultsmentioning

confidence: 98%

Strong breathable membrane with excellent self‐cleaning, wave‐transparent, and heat dissipation performances

Wang

Zhao

et al. 2021

J of Applied Polymer Sci

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Multifunctional membranes with outstanding heat dissipation, wave‐transparent, and self‐cleaning performance, as well as strength and ventilation, are urgently needed to meet the rapid development of portable electronics. Herein, we reported an improved phase separation process to prepare thermoplastic polyurethane (TPU)/multi‐wall carbon nanotube (MWCNT) composite membranes with open‐cell porous structure. Their morphology can be manipulated by regulating the content of MWCNT and varying processing parameters. These TPU/MWCNT composite membranes exhibit outstanding mechanical properties. For example, they can possess elastic deformation behavior in a wide temperature range from −50 to 100°C, and bear a load of more than 40,000 times their own weight. Moreover, there is not any obvious crease on the surface of membranes after a forced folding process, indicating their outstanding shape‐recovery ability and elasticity. Furthermore, these membranes have low dielectric constant and loss factor, and they are almost transparent to X‐band electromagnetic waves. What's more, these membranes also show outstanding water‐vapor breathable performance. In addition, MWCNT and open‐cell porous structure endow TPU/MWCNT membranes efficient heat dissipation capacity and good self‐cleaning performance.

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“…The corrosion resistance of coatings can be improved by selecting the appropriate chemical composition, reducing the growth and preparation defects to obtain a dense and uniform coating structure, increasing the coating thickness, using a multilayer film structure, pretreating the coating, and adding a transition layer [63]. Jiang et al [64] laminated pure Mg films onto hot-dip coated Zn-55Al-1.6Si steel by PVD, varying the Ar gas pressure and deposition. It was found that the lamination of Mg film enhanced the corrosion resistance, which was significantly affected by the thickness of Mg film, especially for the cross section by a factor of 2-10.…”

Section: Vapor Deposition Technologymentioning

confidence: 99%

Research Status of Graphene Polyurethane Composite Coating

Zhou

Huang

2022

Coatings

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Graphene material has a variety of excellent properties and applications in energy storage, biomaterials, photoelectric devices, and other fields. With the progress of nanotechnology, graphene nanomaterials have shown their advantages in the field of new nano-corrosion coatings with their high barrier structure. In addition, polyurethane is also widely used in the field of anti-corrosion coatings due to its excellent chemical resistance, mechanical properties, and weathering resistance. The preparation of composite coatings by combining graphene nanomaterials with traditional polyurethane (PU) coatings has opened up a new way for the research and development of new anticorrotic coatings. In this paper, graphene polyurethane composite coating was first used as the research object, and the mechanism of graphene material in the new composite coating was analyzed. Then, graphene oxide (GO), a commonly used precursor material, was used as an entry point for a detailed study of the properties of GO materials and the advantages and disadvantages of its application in composites, and two types of modifications, covalent and non-covalent, were analyzed. In addition, the preparation methods and processes of graphene polyurethane composite coatings were summarized. Finally, the future research directions and research focus of GO were prospected.

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A two-step process for the preparation of thermoplastic polyurethane/graphene aerogel composite foams with multi-stage networks for electromagnetic shielding

Cited by 55 publications

References 29 publications

A Review of Conductive Carbon Materials for 3D Printing: Materials, Technologies, Properties, and Applications

A Review of Conductive Carbon Materials for 3D Printing: Materials, Technologies, Properties, and Applications

Strong breathable membrane with excellent self‐cleaning, wave‐transparent, and heat dissipation performances

Research Status of Graphene Polyurethane Composite Coating

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