Omar, Mohamad Firdaus and Ali, Fathilah and Jami, Mohammed Saedi and Azmi, Azlin Suhaida and Ahmad, Farah and Marzuki, Mohd Zahid
  
(2023)
Influence of continuous flow bead-milling process parameters on sulfur curative and its performance for elastomeric rubber composites.
    In: IIUM Engineering Congress 2023 (IEC ’23), 15 – 16 August 2023, IIUM.
  
  
  
  
  
    
  
    
      
      
    
  
  
    
  
  
    Abstract
    Bead-milling is an eco-friendly and feasible method for physical modification of  materials  that  has  been  extensively  used  in  many  industrial  applications  impacting  on particle size and overall products’ performance. While previous studies explored various bead-milling  parameters  in  different  applications,  limited  research  conducted  on  sulfur curative  dispersion,  necessitating  a  thorough  investigation  of  its  performance  after  bead-milling is applied. The primary objectives of the present study were to explore the influence of bead-milling process parameters, particularly rotational speed and flow rate on the sulfur curative  dispersion  characteristics  and  to  analyze  its  behavior  within  the  rubber  elastomer matrix. Taguchi’s L9 orthogonal array experimental design  was  employed  to  identify  the optimal rotational speed and flow rate of a 60-L bead-milling machine on the sulfur curative dispersion. It was found that higher rotational speed (800 rpm) and lower flow rate (350 L/h) of  the  bead-milling  process  resultedin  smaller  sulfur  particle  sizes,  leading  to  slight improvement on tensile strength of the rubber elastomerand hindered the formation of severe sulfur  crystals  on  the  casted  rubber  elastomer –and vice  versa.  This  research  providesvaluable insights to determine the ideal bead-milling process for sulfur curative, enhancing the mechanical properties and overall performance of elastomeric rubber composites.
  
  
  
  
  
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