Studies of Electroless Copper Plating on Poplar Veneer

Guo, Ting; Wang, Yu; Huang, Jian

doi:10.15376/biores.11.3.6920-6931

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…After two electroless runs, the EMI shielding effectiveness of wood veneer improved considerably, and the attenuation of shielding effectiveness was limited as electromagnetic wave frequency increased. The electromagnetic shielding performance is not lower than 45 dB in frequencies ranging from 10 MHz to 1.5 GHz., which is close to related literature (Guo 2016). However, as improvement in EMI shielding effectiveness was limited beyond two electroless runs, electroless runs were sufficient to achieve effective EMI shielding.…”

Section: Emi Shielding Effectivenesssupporting

confidence: 86%

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Fabrication of flexible thin veneer for electromagnetic interference shielding and decoration through simple electroless plating

Wang

Gala

Huang

2020

BioRes

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A widely applicable electromagnetic interference (EMI) shielding and decorative thin veneer containing copper was prepared with simple electroless technology. Copper was used as the structural and EMI reflection component to reinforce the mechanical strength and EMI shielding effectiveness. Both the texture and structural properties of copper deposited on poplar wood were characterized. The X-ray diffraction patterns indicated that the copper deposited on poplar wood had a crystallite size between 7.9 nm and 15.9 nm, and the copper crystallites grew rapidly as the number of electroless runs increased, which was consistent with the resistivity and microscopy analyses. The mechanical and EMI shielding effectiveness results showed that after two electroless runs, the wood veneer surface was completely covered, which improved the EMI shielding effectiveness and mechanical properties of wood veneer. The material could be bent 360° without being damaged and had a good decorative effect.

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Section: Emi Shielding Effectivenesssupporting

confidence: 86%

“…Finally, for conductive metal-type electromagnetic shielding materials, the key to electromagnetic shielding performance is the continuity of the metal layer rather than the thickness of the metal. Therefore, it is replaced by metal aluminum foil because of its low cost and flexibility (Guo et al 2016;Zhou and Zhao 2004).…”

Section: Introductionmentioning

confidence: 99%

Fabrication of flexible thin veneer for electromagnetic interference shielding and decoration through simple electroless plating

Wang

Gala

Huang

2020

BioRes

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“…The crystal patterns of the samples were obtained by electroless Ni once before electroless plating Cu twice and electroless Cu two times before electroless Ni one time deposition. Figure 4a showed that the diffraction peaks at 2θ = 43, 50.54 and 74.44° were facecentered cubic structures Cu (111), ( 200) and (220), respectively [19]. The diffraction peak at 2θ = 44.5°w as the characteristic peak of the face-centered cubic structure Ni (111) [20];In Fig.…”

Section: Xrd Analysismentioning

confidence: 91%

Preparation And Properties of Electroless Cu/Ni Composite Materials Based On Wood

Pan

Guo

Yin

et al. 2021

Preprint

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The changes of properties of wood-based Cu-Ni composites were studied via electroless Cu and Ni on wood surface to obtain Cu-Ni multilayer composites with excellent properties. The surface and interface morphology of the composite coatings were investigated via laser confocal microscopy and scanning electron microscope (SEM). The crystal structure was characterized by XRD. The hydrophobic properties of the composite coatings were tested via contact angle meter. The surface conductivity of composites was tested via four-probe. The results showed that the electrical conductivity of wood-based Cu-Ni composites was 2370.76 S/cm. The surface roughness was 9.99 μm and the thickness of uniform coating reached 157 μm via one time electroless Ni deposition and two times electroless Cu deposition. XRD analysis showed that the wood surface was uniformly covered with metal coating. The metal Cu and Ni were closely nested together to form a dense composite layer, and the composite material was light in weight. When the electroless Ni was 55 min, the contact angle could reach 123°, indicating that had best hydrophobicity. The average electromagnetic shielding effectiveness (EMSE) of Cu and Ni wood-based composites can reach 93.8 dB at L band ranging from 0.3×103 to 3.0×103 MHz) with a low thickness (157 μm), verified the multilayer composite materials can block over 99.99% of incident EM waves.

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“…The composite coatings exhibited the optimal shielding performance (average 90.69 dB) in the L-band ranged from 300 kHz to 2.0 GHz, which demonstrated that the maximum value (electromagnetic shielding effectiveness) was up to 100 dB and the electromagnetic shielding effectiveness was very stable. The electromagnetic shielding effectiveness of the Cu coatings-based wood was only 62 dB ranging from 10 kHz to 1.5 GHz [39,40]. The emerged synergistic effect of Cu and Ni coatings on electromagnetic shielding performance originated from two features of composite coatings-based segregated conductive networks [41,42] and specific interfacial polarization.…”

Section: Electromagnetic Shielding Effectivenessmentioning

confidence: 99%

Multilayer-Structured Wood Electroless Cu–Ni Composite Coatings for Electromagnetic Interference Shielding

Pan

Yin

et al. 2020

Coatings

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The lightweight multilayer-structured electromagnetic interference shielding composite coatings with controllable electromagnetic gradient on wood surface were prepared via a simple multiple electroless copper–nickel (Cu–Ni) approach. The surface morphology, conductivity, hydrophobicity property and electromagnetic shielding effectiveness of the composite coatings were investigated. The surface roughness and conductivity of the composite coatings were enhanced with the increase in the number of depositions. The surface morphology demonstrated that the roughness was decreased with the process of multiple electroless. The coatings were compact and homogeneous as the deposition run was three. Here, the Sa (Sa illustrated Surface Roughness) value of coatings was 4.497 μm. The ideal conductivity of composite coatings can be obtained as the number of depositions was four. Electromagnetic shielding effectiveness reached average 90.69 dB in the frequency range from 300 kHz to 2.0 GHz. This study provides a new pathway for fabricating lightweight multilayer-structured electromagnetic interference shielding with controllable electromagnetic gradient and hydrophobic composite coatings-based wood.

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Studies of Electroless Copper Plating on Poplar Veneer

Cited by 11 publications

References 6 publications

Fabrication of flexible thin veneer for electromagnetic interference shielding and decoration through simple electroless plating

Fabrication of flexible thin veneer for electromagnetic interference shielding and decoration through simple electroless plating

Preparation And Properties of Electroless Cu/Ni Composite Materials Based On Wood

Multilayer-Structured Wood Electroless Cu–Ni Composite Coatings for Electromagnetic Interference Shielding

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