Reinforcement of Lime Ash Particles in LDPE

Abstract

This study presents findings from an experimental investigation on the reinforcement of Lime ash particles (LAP) synthesized from coal fly ash, CaO, and CaSO4 in Low density Polyethylene (LDPE). The Lime ash particles are synthesized by reinforcing 0 to 30 weight percentages of LAP in virgin LDPE using compression moulding. The mechanical properties of composites are studied and results showed that by adding LAP in LDPE as filler the Tensile Strength and Impact Strength of the composite decreases due to poor interfacial bonding between filler particles and LDPE but Hardness and Flexural Properties increases due to improved properties of surface.

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“…According to the obtained results, the tensile strength and tensile modulus of the prepared RHDPE/WGP composite without a compatibilizer, as in samples S 5,0 , S 10,0 , S 20,0 and S 30,0 ,decreased with increasing glass reinforcement particle content, as shown in Figure 4 . This result could be attributed to the imperfect adhesion between the polymer matrix and glass particles [ 19 ], which led to an aggregation of glass particles (confirmed from SEM images in the next section) and that in turn made the reinforcement particles unable to support stress transferred from the polymer matrix [ 10 , 20 ]. Furthermore, the concentration of stress at the particle-matrix interface region leads to weakness of the particle-matrix interaction and consequently reduces the tensile strength [ 21 ].In other words, the tensile strength is a function of the surface contact area and the interfacial strength, the modulus is a function of the surface contact area, and filler agglomeration affects both factors.…”