Yeoh Cheow Keat
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Preferred name
Yeoh Cheow Keat
Official Name
Cheow Keat, Yeoh
Alternative Name
Yeoh, C. K.
Yeoh, Cheow Keat
Yeoh, Cheow-Keat
Main Affiliation
Scopus Author ID
16231574200
Researcher ID
EGP-0633-2022

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  • Publication
    Effect of infill density with ZnO concentration on the mechanical properties of 3D printed PLA/ZnO composites
    (American Institute of Physics Inc., 2022-05-18)
    Tan M.A.
    ;
    Yeoh Cheow Keat
    ;
    Teh Pei Leng
    ;
    Nor Azura Abdul Rahim
    ;
    Song C.C.
    ;
    Mansor N.S.S.
    ;
    Lim J.H.
    Polylactic acid (PLA) plastics are biodegradable materials manufactured from PLA resin by melt spinning and solvent spinning methods. PLA is widely applied in textile fabric, non-woven, masks and sanitary napkins applications due to excellent safety, environmental protection and good mechanical properties. The process of 3D printing is continuous and able to produce complex three-dimensional structures. PLA/ZnO composite samples were fabricated by a 3D printer. ZnO acts as filler in PLA/ZnO composites to obtain the excellent properties like specific tensile properties and density. However, ZnO agglomeration occurred at higher concentration when viewed via SEM. Printing parameters such as infill density, raster orientation and infill pattern can influence the mechanical properties of 3D samples as well. The objective of this paper is to determine the effect of infill density with different ZnO concentration on the mechanical properties of 3D printed PLA/ZnO composites. Tensile and density measurement were carried out to determine the mechanical properties of composites. The influence of 80%, 90%, 100% infill rate and ZnO concentration varied by 1 and 5 mol. As a result, higher infill rate (100%) and optimum filler concentration (1 mol ZnO) give the excellent properties thus can be used for future applications.
      2  4
  • Publication
    The effect of liquid silicone rubber content on the properties of filled and unfilled natural rubber latex/liquid silicone rubber blend (NRL/LSR)
    (American Institute of Physics Inc., 2022-05-18)
    Ming C.W.
    ;
    Teh Pei Leng
    ;
    Jalilah Abd Jalil
    ;
    Yeoh Cheow Keat
    ;
    Lim J.H.
    Polymer blend is known as the simplest method to obtain a new material by just blending two or more materials with suitable mixing technique. Most of the material engineers play their effort to improve the compatibility and miscibility of the blend components since this gives significant effect on the properties of the resulting materials. However, some of the creative engineers used the shortage of the immiscible blend material in the electronic application by inducing the double percolation with the aim to improve the electrical conductivity of the inherently insulating polymeric materials and at the same time conserve the attractive properties of the polymeric matrix. Herein, unfilled NRL/LSR and filled NRL/LSR with 7phr of GNP-SDS blend materials were prepared in order to investigate the effect of LSR content on the crosslink density, tensile properties, tear strength and electrical properties of the blend materials. It was found that the physical and mechanical properties of the materials declined with the increasing LSR content. Nevertheless, the modulus and the electrical properties of the filled NRL/LSR have been improved.
      2  4