Thermally Conductive Poly(lactic acid) Composites with Superior Electromagnetic Shielding Performances via 3D Printing Technology

Ma, Tengbo; Ma, Hao; Ruan, Kunpeng; Shi, Xuetao; Qiu, Hua; Gao, Sheng-Yuan; Gu, and Jun-Wei

doi:10.1007/s10118-022-2673-9

Cited by 176 publications

(62 citation statements)

References 53 publications

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“…The rapid development of modern electronic technology has put forward newer and higher requirements for polymer-based EMI shielding composites. In addition to ensuring its excellent EMI shielding performance, it also needs to have good flexibility, thermal conductivity, self-heating performance and mechanical properties [ 34 , 35 ]. By introducing multifunctional fillers and constructing the layered structure, it is feasible to realize the multifunctional compatibility design of polymer-based EMI shielding composites [ 36 , 37 ].…”

Section: Possible Directions For Developing Polymer-based Emi Shieldi...mentioning

confidence: 99%

A Perspective for Developing Polymer-Based Electromagnetic Interference Shielding Composites

Zhang

2022

Nano-Micro Lett.

175

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The rapid development of aerospace weapons and equipment, wireless base stations and 5G communication technologies has put forward newer and higher requirements for the comprehensive performances of polymer-based electromagnetic interference (EMI) shielding composites. However, most of currently prepared polymer-based EMI shielding composites are still difficult to combine high performance and multi-functionality. In response to this, based on the research works of relevant researchers as well as our research group, three possible directions to break through the above bottlenecks are proposed, including construction of efficient conductive networks, optimization of multi-interfaces for lightweight and multifunction compatibility design. The future development trends in three directions are prospected, and it is hoped to provide certain theoretical basis and technical guidance for the preparation, research and development of polymer-based EMI shielding composites.

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Section: Possible Directions For Developing Polymer-based Emi Shieldi...mentioning

confidence: 99%

A Perspective for Developing Polymer-Based Electromagnetic Interference Shielding Composites

Zhang

2022

Nano-Micro Lett.

175

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“…The construction of efficient three-dimensional (3D) conductive networks can effectively reduce the percolation threshold of rGO/polymer composites, so as to realize the synergistic improvement of σ , EMI shielding performances and mechanical properties for polymer composites at low filler content [ 20 , 21 ]. Current methods for constructing efficient 3D conductive networks in polymer-based composites mainly include foaming, surface coating-hot pressing and sol–gel methods, etc .…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency Electromagnetic Interference Shielding of rGO@FeNi/Epoxy Composites with Regular Honeycomb Structures

et al. 2022

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With the rapid development of fifth-generation mobile communication technology and wearable electronic devices, electromagnetic interference and radiation pollution caused by electromagnetic waves have attracted worldwide attention. Therefore, the design and development of highly efficient EMI shielding materials are of great importance. In this work, the three-dimensional graphene oxide (GO) with regular honeycomb structure (GH) is firstly constructed by sacrificial template and freeze-drying methods. Then, the amino functionalized FeNi alloy particles (f-FeNi) are loaded on the GH skeleton followed by in-situ reduction to prepare rGH@FeNi aerogel. Finally, the rGH@FeNi/epoxy EMI shielding composites with regular honeycomb structure is obtained by vacuum-assisted impregnation of epoxy resin. Benefitting from the construction of regular honeycomb structure and electromagnetic synergistic effect, the rGH@FeNi/epoxy composites with a low rGH@FeNi mass fraction of 2.1 wt% (rGH and f-FeNi are 1.2 and 0.9 wt%, respectively) exhibit a high EMI shielding effectiveness (EMI SE) of 46 dB, which is 5.8 times of that (8 dB) for rGO/FeNi/epoxy composites with the same rGO/FeNi mass fraction. At the same time, the rGH@FeNi/epoxy composites also possess excellent thermal stability (heat-resistance index and temperature at the maximum decomposition rate are 179.1 and 389.0 °C respectively) and mechanical properties (storage modulus is 8296.2 MPa).

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“…The calculated heat‐resistance index ( T HRI ) was calculated according to the data in Figure 3 and Table 2. [ 40,41 ] The T HRI of 170BF‐B plywood decreased by 22.37 °C compared with that of untreated plywood. The results exhibited that after flame retardant treatment, the wood materials quickly formed carbon under the condition of nitrogen before 300 °C, forming a stable flame retardant layer, which played a role in inhibiting the combustion spread of wood materials.…”

Section: Resultsmentioning

confidence: 99%

“…The calculated heat-resistance index (T HRI ) was calculated according to the data in Figure 3 and Table 2. [40,41] The T HRI of 170BF-B plywood decreased by 22.37 °C compared with that of untreated plywood.…”

Section: Thermal Stability Analysis Of Bio-based In Situ Polymerizati...mentioning

confidence: 96%

In Situ Polymerization and Flame Retardant Mechanism of Bio‐Based Nitrogen and Phosphorus Macromolecular Flame Retardant in Plywood

Yang

Zhang

2022

Macromol. Rapid Commun.

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To improve the flame retardant performance of plywood and reduce the reagent loss and moisture absorption of the flame retardant, a bio-based supramolecular flame retardant is prepared by vacuum-pressure impregnation and high-temperature in situ polymerization in plywood. The best value of bonding strength appears at 170 °C, and the limiting oxygen index (LOI) of 170BF-B plywood is 42.3%. After hot pressing, the moisture absorption rate of the 170BF-B veneer is only 18.51%, while the loss resistance rate achieves 83.45%. Its residue at 700 °C is 91.36% higher than that of poplar veneer. In the combustion process, the peak value of heat release rate (PHRR) and heat release rate (HRR) of 170BF-B plywood are only 10.69% and 37.11% of that of untreated plywood. After combustion, an intumescent flame retardant layer exhibits a graphitization trend. In the flame retardant layer, there are not only functional groups, such as P═O, PO 4 3− , P-O-C decomposed by flame retardant but also characteristic functional groups of wood fiber, like C═O, C-H, etc. The prepolymer BF-B, which is composed of phytic acid, urea, and dicyandiamide polymerized with chitosan or lignocellulose to form a supramolecular flame retardant connected with P-O-C and P-O-N functional groups, thus improving the flame retardant and anti-loss property by in situ polymerization.

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Thermally Conductive Poly(lactic acid) Composites with Superior Electromagnetic Shielding Performances via 3D Printing Technology

Cited by 176 publications

References 53 publications

A Perspective for Developing Polymer-Based Electromagnetic Interference Shielding Composites

A Perspective for Developing Polymer-Based Electromagnetic Interference Shielding Composites

High-Efficiency Electromagnetic Interference Shielding of rGO@FeNi/Epoxy Composites with Regular Honeycomb Structures

In Situ Polymerization and Flame Retardant Mechanism of Bio‐Based Nitrogen and Phosphorus Macromolecular Flame Retardant in Plywood

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