Characterization And Properties Of Styrene Butadiene Rubber/Recycled Acrylonitrile-Butadiene Rubber (Sbr/Nbr) Blends

Pengitaran atau penggunaan semula sarung tangan getah kitar semula akrilonitril-butadiena (NBRr) dengan pencampuran getah sintetik stirena butadiena (SBR) boleh mewujudkan suatu peluang terhadap altematif produk baru. The recycling or reuse of waste rubber from recycled acrylonitrile-butadiene rubber glove (recycled NBR glove) by means of blending together with synthetic rubber styrene butadiene rubber (SBR) can gives an opportunity as an alternative product

Characterization And Properties Of Styrene Butadiene Rubber/Recycled Acrylonitrilebutadiene Rubber (SBR/NBRr) Blends

The recycling or reuse of waste rubber from recycled acrylonitrile-butadiene rubber glove (recycled NBR glove) by means of blending together with synthetic rubber styrene butadiene rubber (SBR) can gives an opportunity as an alternative product. Results in first series indicated that SBR/NBRr blends particularly having NBRr content up to 15 phr, exhibited improvement in tensile strength, elongation at break, Eb and fatigue value compared with SBR/NBRv blends. Pengitaran atau penggunaan semula sarung tangan getah kitar semula akrilonitril-butadiena (NBRr) dengan pencampuran getah sintetik stirena butadiena (SBR) boleh mewujudkan suatu peluang terhadap altematif produk baru. Keputusan untuk siri pertama mendapati bahawa adunan getah SBR/NBRr memiliki sifat-sifat penambahbaikan pada kekuatan tensil, pemanjangan takat putus (Eb) and juga kelesuan (fatig) terutama mengandungi NBRr tidak melebihi 15 phr berbanding dengan adunan getah SBR/NBRv

Effect inclusion of graphene on the mechanical properties of polymer nanocomposites

Graphene-based nanocomposites have introduced to the development of flexible nanocomposite as for emerging applications like as in need of superior of thermal, mechanical, electrical, chemical and optical performance. Sp2-hybridized carbon atoms are arranged in a two-dimensional lattice which is a monolayer that produces the graphene. Graphene has gained significantly as fillers in the nanocomposite due to it has various intriguing properties. This review will discuss the effect of inclusion of graphene on the mechanical properties of polymer nanocomposites

Investigation on the flexural properties of nanofillers loading on the Jute/Carbon/PLA nanocomposites

Presence of fibers and fillers in a composite can be an efficient way to arrest crack either at macro or micro levels. In this work, woven jute and carbon fibers were arranged alternately in PLA (Polylactic Acid) nanocomposite. Graphene or nanoclay was embedded into PLA matrix to make polymer nanocomposite. Fiber reinforced polymer nanocomposites were prepared by varying the concentration of graphene or nanoclay in the PLA matrix and alternate woven jute/carbon fibers was then bind with the PLA nanocomposite. Influence of graphene or nanoclay concentration and presence of woven fibres in the composite was quantified by flexural analysis. Flexural strength and flexural modulus were found to increase at 3wt% of nanofiller concentration for both graphene/jute/PLA and nanoclay/jute/PLA nanocomposites with increment up to 37% and 31%, respectively. FTIR was used to determine the interaction between PLA and nanofillers. Morphology observation by Scanning Electron Microscopy (SEM) was done to investigate the fractured surface of the hybrid jute/carbon fibres reinforced PLA nanocomposite

Tensile Properties and Water Absorption of Spear Grass Fibre Filled High Density Polyethylene/Thermoplastic Soya Spent Powder Composites

The study was focused on the tensile properties, morphology, water absorption and thermogravimetric analysis (TGA) of degradable composites which are produced from high density polyethylene (HDPE)/thermoplastic soya spent (TPSS) powder with the addition of spear grass filler. HDPE/TPSS at the ratio of 90:10 was used as matrix in the composites. In this ratio, the tensile strength of the HDPE was not much deteriorated by TPSS. However, significant effect on degradation was observed based on previous research. The addition of spear grass filler has further reduced the tensile strength of the composites, yet the tensile modulus of the composites was improved. Nevertheless, the tensile strength, elongation at break of the composite was improved with the presence of polyethylene grafted maleic anhydride (PE-g-MA) as a compatibiliser. The water absorption shows the increase of the water uptake with the addition of spear grass filler

Effect of Particle Size on Mechanical Properties of Sawdust-High Density Polyethylene Composites under Various Strain Rates

There is a need to understand the effect of wood particle size, as it affects the characteristics of wood-based composites. This study considers the effect of wood particle size relative to the dynamic behavior of wood composites. The compression Split Hopkinson Pressure Bar (SHPB) was introduced to execute dynamic compression testing at the strain rate of 650 s-1, 900 s-1, and 1100 s-1, whereas a conventional universal testing machine (UTM) was used to perform static compression testing at the strain rate of 0.1 s-1, 0.01 s-1, and 0.001 s-1 for four different particle sizes (63 µm, 125 µm, 250 µm, and 500 µm). The results showed that mechanical properties of composites were positively affected by the particle sizes, where the smallest particle size gave the highest values compared to the others. Moreover, the particle size also affected the rate sensitivity and the thermal activation volume of sawdust/HDPE, where smaller particles resulted in lower rate sensitivity. For the post-damage analysis, the applied strain rates influenced deformation behavior differently for all particle sizes of the specimens. In a fractographic analysis under dynamic loading, the composites with large particles experienced severe catastrophic deformation and damages compared to the smaller particles

Optimization of Injection Moulding Process via Design of Experiment (DOE) Method based on Rice Husk (RH) Reinforced Low Density Polyethylene (LDPE) Composite Properties

Optimal parameters setting of injection moulding (IM) machine critically effects productivity, quality, and cost production of end products in manufacturing industries. Previously, trial and error method were the most common method for the production engineers to meet the optimal process injection moulding parameter setting. Inappropriate injection moulding machine parameter settings can lead to poor production and quality of a product. Therefore, this study was purposefully carried out to overcome those uncertainty. This paper presents a statistical technique on the optimization of injection moulding process parameters through central composite design (CCD). In this study, an understanding of the injection moulding process and consequently its optimization is carried out by CCD based on three parameters (melt temperature, packing pressure, and cooling time) which influence the shrinkage and tensile strength of rice husk (RH) reinforced low density polyethylene (LDPE) composites. Statistical results and analysis are used to provide better interpretation of the experiment. The models are form from analysis of variance (ANOVA) method and the model passed the tests for normality and independence assumptions

Influence of Filler Surface Modification on Static and Dynamic Mechanical Responses of Rice Husk Reinforced Linear Low-Density Polyethylene Composites

Filler surface modification has become an essential approach to improve the compatibility problem between natural fillers and polymer matrices. However, there is limited work that concerns on this particular effect under dynamic loading conditions. Therefore, in this study, both untreated and treated low linear density polyethylene/rice husk composites were tested under static (0.001 s-1, 0.01 s-1 and 0.1 s-1) and dynamic loading rates (650 s-1, 900 s-1 and 1100 s-1) using universal testing machine and split Hopkinson pressure bar equipment, respectively. Rice husk filler was modified using silane coupling agents at four different concentrations (1, 3, 5 and 7% weight percentage of silane) at room temperature. This surface modification was experimentally proven by Fourier transform infrared and Field emission scanning electron microscopy. Results show that strength properties, stiffness properties and yield behaviour of treated composites were higher than untreated composites. Among the treated composites, the 5% silane weight percentage composite shows the optimum mechanical properties. Besides, the rate of sensitivity of both untreated and treated composites also shows great dependency on strain rate sensitivity with increasing strain rate. On the other hand, the thermal activation volume shows contrary trend. For fracture surface analysis, the results show that the treated LLDPE/RH composites experienced less permanent deformation as compared to untreated LLDPE/RH composites. Besides, at dynamic loading, the fracture surface analysis of the treated composites showed good attachment between RH and LLDPE