The Experts below are selected from a list of 367932 Experts worldwide ranked by ideXlab platform

Tao Huang - One of the best experts on this subject based on the ideXlab platform.

  • boron nitride graphene oxide hybrids for epoxy Composites with enhanced thermal conductivity
    RSC Advances, 2016
    Co-Authors: Tao Huang, Xiaoliang Zeng, Yimin Yao, Rong Sun, Fanling Meng, Chingping Wong
    Abstract:

    Polymer-based materials have widely been used for electronics packaging owing to their excellent physical and chemical properties. However, polymer materials usually have low thermal conductivity, which thus may impair the performance and reliability of modern electronics. In this paper, we report an Epoxy-Based Composite with increased thermal conductivity by using graphene oxide-encapsulated boron nitride (h-BN@GO) hybrids as fillers. The thermal conductivity of the obtained Composites increased with the loading of h-BN@GO hybrids to a maximum of 2.23 W m−1 K−1 when the loading of h-BN@GO hybrids was 40 wt%, which is double that of Composites filled with h-BN. This increase is attributed to the presence of GO, which improved the compatibility of h-BN with epoxy resin, along with the reduced interfacial thermal resistance between h-BN and epoxy resin. In addition, the effects of h-BN@GO hybrids on the thermal and dielectric properties of epoxy Composites were also investigated. The prepared h-BN@GO/epoxy Composites exhibit outstanding performance in dimensional stability, slightly reduced thermal stability, and enhanced dielectric properties, which make them suitable as excellent electronics packaging materials.

Nayan Chaudhary - One of the best experts on this subject based on the ideXlab platform.

  • Influence of ultrasonic dual mixing on thermal and tensile properties of MWCNTs-epoxy Composite
    Composites Part B: Engineering, 2015
    Co-Authors: P.k. Ghosh, Kaushal Kumar, Nayan Chaudhary
    Abstract:

    Abstract Multiwalled carbon nanotubes (MWCNTs) reinforced epoxy based Composites were fabricated by using an innovative ultrasonic dual mixing (UDM) process consists of ultrasonic mixing with simultaneous magnetic stirring. The effect of addition of varying amount of MWCNTs on thermal stability and tensile properties of the epoxy based Composite has been investigated. It is found that the thermal stability, tensile strength and toughness of the epoxy base improves with the increase of MWCNTs addition up to 1.5 wt.% and UDM processing at certain capacity of the system. Tensile tests and thermal gravimetric analysis (TGA) were performed on each group of Composites containing different amount of MWCNTs to determine their mechanical and thermal properties respectively. The dispersion of 1.5 wt.% MWCNTs fillers in epoxy nanoComposites was studied by transmission electron microscopy (TEM) as well as by field emission scanning electron microscopy (FESEM) applied on their tensile fracture surface.

Guo Dong-yun - One of the best experts on this subject based on the ideXlab platform.

  • Damping properties of Epoxy-Based Composite embedded with sol–gel-derived Pb(Zr 0.53 Ti 0.47 )O 3 thin film with different thicknesses
    Bulletin of Materials Science, 2012
    Co-Authors: Guo Dong-yun, Mao Wei, Qin Yan, Huang Zhixiong, Wang Chuanbin, Shen Qiang, Zhang Lian-meng
    Abstract:

    Pb(Zr\(_{\mathbf{0\boldsymbol{\cdot}53}}\)Ti\(_{\mathbf{0\boldsymbol{\cdot}47}})\)O3 (PZT) thin films were prepared on Pt/Ti/SiO2/Si substrate by sol–gel method. The effect of film thickness on microstructure, ferroelectric and dielectric properties was investigated. The single-phase PZT films were obtained with different thicknesses. PZT films with a thickness of 190–440 nm had better dielectric and ferroelectric properties. The epoxy/PZT film/epoxy sandwiched Composites were prepared. The thickness of PZT films influenced their damping properties of the Composites, and the Epoxy-Based Composites embedded with 310 nm-thick PZT films had the largest damping loss factor of 0\(\boldsymbol{\cdot} \)915.

  • Damping property of Epoxy-Based Composite embedded with sol–gel-derived Pb(Zr 0.53 Ti 0.47 )O 3 thin film
    Journal of Materials Science: Materials in Electronics, 2010
    Co-Authors: Fu Chengju, Mao Wei, Qin Yan, Huang Zhixiong, Guo Dong-yun
    Abstract:

    The Pb(Zr0.53Ti0.47)O3 (PZT) thin films were prepared on Pt/Ti/SiO2/Si substrate by sol–gel method. The effect of the annealing holding time on microstructure, ferroelectric and dielectric properties was investigated. The single-phase PZT films were obtained with different annealing holding time. PZT films annealed for 30–90 min had better dielectric and ferroelectric properties. The epoxy/PZT film/epoxy sandwich Composites were prepared, and the annealing holding time of PZT films influenced the damping property of the Composites. The Epoxy-Based Composites embedded with PZT films annealed for 90 min had largest damping loss factor of 0.906.

P.k. Ghosh - One of the best experts on this subject based on the ideXlab platform.

  • Influence of ultrasonic dual mixing on thermal and tensile properties of MWCNTs-epoxy Composite
    Composites Part B: Engineering, 2015
    Co-Authors: P.k. Ghosh, Kaushal Kumar, Nayan Chaudhary
    Abstract:

    Abstract Multiwalled carbon nanotubes (MWCNTs) reinforced epoxy based Composites were fabricated by using an innovative ultrasonic dual mixing (UDM) process consists of ultrasonic mixing with simultaneous magnetic stirring. The effect of addition of varying amount of MWCNTs on thermal stability and tensile properties of the epoxy based Composite has been investigated. It is found that the thermal stability, tensile strength and toughness of the epoxy base improves with the increase of MWCNTs addition up to 1.5 wt.% and UDM processing at certain capacity of the system. Tensile tests and thermal gravimetric analysis (TGA) were performed on each group of Composites containing different amount of MWCNTs to determine their mechanical and thermal properties respectively. The dispersion of 1.5 wt.% MWCNTs fillers in epoxy nanoComposites was studied by transmission electron microscopy (TEM) as well as by field emission scanning electron microscopy (FESEM) applied on their tensile fracture surface.

  • Properties of adhesive joint of inorganic nano-filler Composite adhesive
    Indian Journal of Engineering and Materials Sciences, 2008
    Co-Authors: P.k. Ghosh, Sharada Kameswari Nukala
    Abstract:

    The characteristics of adhesive joints of aluminium sheet containing epoxy based Composite adhesives containing nanofiller of ZrO2 powder have been studied. The Composite adhesives containing 10, 15 and 20wt.% of about 20±3 nm size ZrO2 powder are applied to mechanically treated aluminium substrates. The single lap joints of the Composite adhesive are characterized by their tensile lap shear strength as a function of the bond-line thickness as well as the amount of filler. The characteristics of the Composite adhesive joint have been compared to those of the conventional epoxy adhesive joints. The bond-line thickness of the adhesive with respect to the amount of the ZrO2 nano-filler has been optimised for maximum tensile single lap shear strength of the adhesive joint of mechanically treated aluminium substrate. In comparison to conventional epoxy adhesive joints, the nano-filler epoxy based adhesive joint of aluminium shows significantly improved lap shear strength as a function of bond line thickness of adhesive and amount of filler in it.

Uwe Ritter - One of the best experts on this subject based on the ideXlab platform.

  • Magnetic anisotropy of the graphite nanoplatelet–epoxy and MWCNT–epoxy Composites with aligned barium ferrite filler
    Journal of Materials Science, 2017
    Co-Authors: O S Yakovenko, Ludmila Matzui, Ludmila Vovchenko, A V Trukhanov, Illya S Kazakevich, S V Trukhanov, Yuriy Prylutskyy, Uwe Ritter
    Abstract:

    The aim of this study was to evaluate the magnetic properties of hybrid Epoxy-Based Composite materials with magnetic barium ferrite (BaM) and conductive carbon (multi-walled carbon nanotubes and graphite nanoplatelets) fillers. This study was performed in order to fabricate Composites with uniform and aligned magnetic components of the filler. The magnetization field dependences of the Composites and BaM powder were determined and analyzed using a vibrating magnetometer. Of additional concern was the filler distribution characterization by optical investigation. Coercivity of BaM/epoxy Composites increases more than in 4 times in comparison with BaM powder. Composites with aligned filler reveal an anisotropy of the magnetization relative to the alignment axis. However, BaM particles retain their uniform distribution in aligned fibers, which is confirmed by a magnetic remanence-to-saturation magnetization ( M (0)/ M _max) ratio of 0.5.

  • magnetic anisotropy of the graphite nanoplatelet epoxy and mwcnt epoxy Composites with aligned barium ferrite filler
    Journal of Materials Science, 2017
    Co-Authors: O S Yakovenko, Ludmila Matzui, Ludmila Vovchenko, A V Trukhanov, Illya S Kazakevich, S V Trukhanov, Yuriy Prylutskyy, Uwe Ritter
    Abstract:

    The aim of this study was to evaluate the magnetic properties of hybrid Epoxy-Based Composite materials with magnetic barium ferrite (BaM) and conductive carbon (multi-walled carbon nanotubes and graphite nanoplatelets) fillers. This study was performed in order to fabricate Composites with uniform and aligned magnetic components of the filler. The magnetization field dependences of the Composites and BaM powder were determined and analyzed using a vibrating magnetometer. Of additional concern was the filler distribution characterization by optical investigation. Coercivity of BaM/epoxy Composites increases more than in 4 times in comparison with BaM powder. Composites with aligned filler reveal an anisotropy of the magnetization relative to the alignment axis. However, BaM particles retain their uniform distribution in aligned fibers, which is confirmed by a magnetic remanence-to-saturation magnetization (M(0)/M max) ratio of 0.5.