Multiwalled carbon nanotubes filled thermoplastic vulcanizate dielectric elastomer with excellent resilience properties via inhibiting <scp>MWCNT</scp> network formation

Ma, Lifeng; Hu, Jiajia; Dou, Rui

doi:10.1002/app.50129

Cited by 10 publications

(9 citation statements)

References 32 publications

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“…There is no doubt that the refinement and homogeneous dispersion of dispersed phase particles is an important manifestation of improved compatibility in polymer blending systems, which has been widely confirmed in many studies. [ 40,41 ] This is consistent with our previous conclusion that an appropriate amount of PDMS‐NH 2 can improve the compatibility between PLA and ENR. In previous reports, the appropriate size reduction of the dispersed phase and the homogeneity of the dispersion are beneficial for improving the mechanical properties of the mixture.…”

Section: Resultssupporting

confidence: 92%

Bio‐based polylactic acid or epoxy natural rubber thermoplastic vulcanizates with dual interfacial compatibilization networks

Liu

2022

Polymer Engineering & Sci

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The bio-based thermoplastic vulcanizates (TPVs) composed of polylactic acid (PLA) and epoxidized natural rubber (ENR) was prepared by the dynamic vulcanization method induced by dicumyl peroxide (DCP), and a novel filler, bis(aminopropyl)-terminated polydimethylsiloxane (PDMS-NH 2 ), was added as the compatibilizer. The dynamic vulcanization reaction occurred first, and the PLA-g-ENR graft copolymer was formed at the interface of PLA and ENR.With the addition of appropriate amount of PDMS-NH 2 , the cross-linking of ENR was enhanced, and the size of PLA became smaller and more evenly dispersed. The prepared TPVs were found to have dual interfacial compatibilization networks. Mechanical characterization of this polymeric material containing a special structure is performed. TPV achieved the tensile strength at break of 12.8 MPa and elongation at break of 103%, revealing 103% and 329% higher than 6.3 MPa and 24% for the simple blend of ENR/PLA. Meanwhile, the elastic modulus of TPV increased to 352 MPa, which was 1.96 times that of the simple blend. As a result, ENR/PLA composites with high toughness and mechanical strength are achieved and the toughening mechanism and toughening factors were discussed.

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Section: Resultssupporting

confidence: 92%

Bio‐based polylactic acid or epoxy natural rubber thermoplastic vulcanizates with dual interfacial compatibilization networks

Liu

2022

Polymer Engineering & Sci

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“…And the interface between the two-phase is still distinct. Combined with our previous work, [1][2][3] it can be concluded that PF can effectively crosslink EPDM phase and the phase inversion occurs successfully during the dynamic vulcanization process. However, the poor compatibility between PA6 and EPDM still has not been improved during the dynamic vulcanization process.…”

Section: Phase Morphologiessupporting

confidence: 69%

“…Thus, TPVs have attracted much attention as "green" polymers in recent years and have been widely used in automotive industries, such as sealing strip, engine cover and charge air pipe, and so on. [1][2][3][4] Traditional metal materials are costly, and easy to rust. More and more metal products are replaced by new environmentally friendly materials.…”

Section: Introductionmentioning

confidence: 99%

Polyamide 6‐based thermoplastic vulcanizate for thermostability: An experimental and theoretical investigation

Jiang

2021

J of Applied Polymer Sci

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In engineering cases, nonuniform temperature and pressure loads will cause greater thermal stress and deformation of the structure. The creep of materials will also accelerate with the increase of temperature, which greatly reduces the service life of parts. This study improves the vulcanization effect and twophase compatibility of polyamide 6-based thermoplastic vulcanizates (TPV), and the elastic modulus of the material was increased to resist deformation and creep. The compatibility and mechanical properties of the materials were analyzed by dynamic thermodynamic analysis. The temperature and stress of charge air pipe are numerically calculated by fluid-thermal-solid coupling. The results show that at 120 C, the strain of TPV is less than 3%, and no plastic deformation occurs. Based on the principle of time-temperature superposition, the long-term creep behavior at reference temperature is predicted by stepped isothermal method through short-term temperature rise creep experiment. The creep strain after 10 5 h at 60 C of TPV grafted by maleic anhydride (TPV-g-MAH) is only 2.8%, indicating that it has good durability in the application of charge air pipes.

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“…Thermoplastic vulcanizate (TPV), a type of high-performance thermoplastic elastomer, is a particularly promising option for bipolar plates because it has flexibility, processibility, and high corrosion resistance. It is made by a dynamic vulcanization process and consists of a dispersed phase with a high amount of cross-linked rubber (ethylene-propylene-diene rubber: EPDM), and a continuous phase with a low concentration of thermoplastics (polypropylene: PP) [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Bipolar Plates from Thermoplastic Elastomer Composites for Vanadium Redox Flow Battery

2022

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A vanadium redox flow battery (VRFB) is a promising large-scale energy storage device, due to its safety, durability, and scalability. The utilization of bipolar plates (BPs), made of thermoplastic vulcanizates (TPVs), synthetic graphite, woven-carbon-fiber fabric (WCFF), and a very thin pyrolytic graphite sheet (GS), is investigated in this study. To boost volumetric electrical conductivity, WCFF was introduced into the TPV composite, and the plate was covered with GS to increase surface electrical conductivity. Created composite BPs acquire the desired electrical conductivity, mechanical strength, and deformation characteristics. Those properties were assessed by a series of characterization experiments, and the morphology was examined using an optical microscope, a scanning electron microscope, and atomic force microscopy. Electrochemical testing was used to confirm the possibility of using the suggested BP in a working VRFB. The laminated BP was utilized in a flow cell to electrolytically convert V(IV) to V(V) and V(II), which achieved comparable results to a commercial graphite bipolar plate. Following these experiments, the laminated bipolar plates’ surfaces were examined using X-ray photoelectron spectroscopy, and no evidence of corrosion was found, indicating good durability in the hostile acidic environment.

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Multiwalled carbon nanotubes filled thermoplastic vulcanizate dielectric elastomer with excellent resilience properties via inhibiting MWCNT network formation

Cited by 10 publications

References 32 publications

Bio‐based polylactic acid or epoxy natural rubber thermoplastic vulcanizates with dual interfacial compatibilization networks

Bio‐based polylactic acid or epoxy natural rubber thermoplastic vulcanizates with dual interfacial compatibilization networks

Polyamide 6‐based thermoplastic vulcanizate for thermostability: An experimental and theoretical investigation

Fabrication of Bipolar Plates from Thermoplastic Elastomer Composites for Vanadium Redox Flow Battery

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