Synthesis and Bonding Performance of Conductive Polymer Containing Rare Earth Oxides

Du, Chao; Liu, Cuirong; Yin, Xu; Zhao, Haixia

doi:10.1007/s10904-017-0713-7

Cited by 9 publications

(5 citation statements)

References 17 publications

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“…With the continuous migration of lithium ions, the width of the cation depletion layer is reached to the maximum, creating a tremendous electrostatic field force between depletion layer and Al foil. Therefore, close contact between PEO‐HBPUEs and Al foil is occurred accompanied by the microcreep and viscous flow, and then the elements are began to diffuse that facilitate the chemical reaction to form the bonding layer 39,40 …”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of electrolyte substrate materials based on hyperbranched polyurethane elastomers for anodic bonding

Zhang

Wang

Zhao³

et al. 2021

J of Applied Polymer Sci

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A series of hyperbranched polyurethane elastomers (PEO‐HBPUEs) as polymer electrolyte substrate materials was developed for anodic bonding with aluminum (Al) foil in micro‐electro‐mechanical system (MEMS) devices. The PEO‐HBPUEs were prepared by pre‐polymerization method with toluene‐2,4‐diisocyanate(TDI), polypropylene glycol (PPG), 1,4‐butanediol(BDO), trimethylolpropane(TMP), lithium bis(trifluoromethanesulphonyl)imide (LiTFSI), and polyethylene oxide (PEO)‐based electrolyte in varying proportions via solution casting technique at room temperature. All prepared PEO‐HBPUEs exhibited low glass transition temperatures, good thermal stabilities, and suitable mechanical properties. The XRD results showed that PEO‐HBPUEs are amorphous, and LiTFSI was well dissolved in the polymer matrix. The component of PEO‐based electrolyte in PEO‐HBPUEs contributed to increase the ionic conductivity, of which the highest value reached 1.23 × 10−3 S/cm at 75°C for PEO‐HBPUE4. The anodic bonding of PEO‐HBPUE substrate with Al foil was conducted by the coupling action of electric field, temperature field, and pressure field. A clear intermediate bonding layer between the substrate and Al foil was observed and the elements diffusion around bonding layer can be detected by SEM, indicating PEO‐HBPUEs and Al foil have been jointed together successfully. The highest tensile strength of the bonding interface of PEO‐HBPUE4/Al reached 1.88 MPa. All results demonstrated that the prepared PEO‐HBPUEs materials would be promising substrates for flexible MEMS device that can be applied to flexible packaging by anodic bonding technology.

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Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of electrolyte substrate materials based on hyperbranched polyurethane elastomers for anodic bonding

Zhang

Wang

Zhao³

et al. 2021

J of Applied Polymer Sci

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“…Continuing to add CeO 2 to 12 wt.%, a large number of crystals were re-condensed on the surface of the matrix, which might be caused by the agglomeration of CeO 2 , indicating that excessive CeO 2 could not reduce the crystallinity of the material and hinder the transmission of ions. 21…”

Section: Resultsmentioning

confidence: 99%

Effect of rare earth oxide CeO₂ on the anodic bonding performance of PEG-based MEMS encapsulation materials

Liu

Yin

et al. 2021

Advances in Mechanical Engineering

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Herein, we synthesized a new polyethylene glycol (PEG)-based solid polymer electrolyte containing a rare earth oxide, CeO2, using mechanical metallurgy to prepare an encapsulation bonding material for MEMS. The effects of CeO2 content (0–15 wt.%) on the anodic bonding properties of the composites were investigated. Samples were analyzed and characterized by alternating current impedance spectroscopy, X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, tensile strength tests, and anodic bonding experiments. CeO2 reduced the crystallinity of the material, promoted ion migration, increased the conductivity, increased the peak current of the bonding process, and increased the tensile strength. The maximum bonding efficiency and optimal bonding layer were obtained at 8 wt% CeO2. This study expands the applications of solid polymer electrolytes as encapsulation bonding materials.

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“…The interfacial characteristics between nanoparticles and matrix has a very signi cant in uence on the electrical properties of composite materials. [21] However, due to the obvious variations in microstructure and physical and chemical parameters, the interfacial stability between polymers and inorganic llers was often adversely affected and even the modi cation effect can be offset in some cases. Therefore, it is necessary to dispose the llers with surface modifying agents, which could act both as "bridges" between nanoparticles and organic compounds and physical bonding, resulting in smooth transition of properties during the preparation of composite materials.…”

Section: | Introductionmentioning

confidence: 99%

Enhanced Aramid/Al2O3 interfacial properties by PDDA modification for the preparation of composite insulating paper

Lü

Song

et al. 2022

Res Chem Intermed

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For further improve the electrical insulation properties of meta-aramid paper(PMIA), polydimethyldiallyl ammonium chloride (PDDA) was used for the modi cation of nano-Al 2 O 3 in this work. The modi ed products were characterized by means of transmission electron microscopy (TEM), Fourier transform infrared spectrometer (FTIR) and liquid Zeta potential. The original and PDDA modi ed nano-Al 2 O 3 was doped into the aramid ber composite, and the effects of PDDA and ller mass fraction on several properties such as electrical conductivity, breakdown strength and surface charge dissipation rate of insulating paper were studied. Finally, the interfacial properties of the composites were investigated using molecular dynamics (MD). The results showed that PDDA was successfully coated on the surface of nano-Al 2 O 3 , and its surface potential was changed from negative to positive, which could improve the interface characteristics between ller and matrix and enhance the dielectric strength of aramid paper. Besides, saturation effect of PDDA modi cation was observed, and when the amount of PDDA was 10% and the content of modi ed nano-Al 2 O 3 was 3%, the breakdown strength of aramid paper was increased by 20%, and the volume conductivity was decreased by 68%. The simulation result revealed that PDDA could improve the insulation performance of aramid paper by reducing the interfacial binding energy between aramid and ller.

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Synthesis and Bonding Performance of Conductive Polymer Containing Rare Earth Oxides

Cited by 9 publications

References 17 publications

Synthesis and characterization of electrolyte substrate materials based on hyperbranched polyurethane elastomers for anodic bonding

Synthesis and characterization of electrolyte substrate materials based on hyperbranched polyurethane elastomers for anodic bonding

Effect of rare earth oxide CeO₂ on the anodic bonding performance of PEG-based MEMS encapsulation materials

Enhanced Aramid/Al2O3 interfacial properties by PDDA modification for the preparation of composite insulating paper

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Synthesis and Bonding Performance of Conductive Polymer Containing Rare Earth Oxides

Cited by 9 publications

References 17 publications

Synthesis and characterization of electrolyte substrate materials based on hyperbranched polyurethane elastomers for anodic bonding

Synthesis and characterization of electrolyte substrate materials based on hyperbranched polyurethane elastomers for anodic bonding

Effect of rare earth oxide CeO2 on the anodic bonding performance of PEG-based MEMS encapsulation materials

Enhanced Aramid/Al2O3 interfacial properties by PDDA modification for the preparation of composite insulating paper

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About

Effect of rare earth oxide CeO₂ on the anodic bonding performance of PEG-based MEMS encapsulation materials