An approach toward augmenting materials, additives, processability and parameterization in rotational molding: a review

Gupta, Nikita; Ramkumar, Pl.; Sangani, Vrushang

doi:10.1080/10426914.2020.1779934

Cited by 25 publications

(19 citation statements)

References 122 publications

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“…The thermoplastic base resin used as expounded matrix is Ge3645 grade rotomoldable linear low density polyethylene (LLDPE) kindly supplied by Greenage Industries, Ahmedabad, India for preparing the composite. It was characterized with a density of 0.936 g/cm 3 and a melt flow index of 4.2 grams/10 minutes (as measured by ASTM D1238) with the particle size of 350 lm. The melting peak temperature is around 120 ˚C as featured from Differential Scanning Calorimeter data.…”

Section: Experimental Methodologymentioning

confidence: 99%

“…Since past few decades, the field of materials have been dominated by polymers and their composites due to the inherent special properties, such as being light in weight, corrosion resistant, easily pigmented and so on [1][2][3][4]. Many of the metallic products have been increasingly replaced by a class of polymeric materials that are well-known to researchers till date [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Effect of industrially processed glass fibre dust on mechanical, thermal and morphological properties mixed with LLDPE for rotational molding process

Gupta

Ramkumar

2021

Sādhanā

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Rotational molding is an idiosyncratic plastic manufacturing technique that provides a comparatively stress free end product. The base resin extensively preferred for rotomolding is Linear Low Density Polyethylene (LLDPE). However, when compared to common engineering materials, pure LLDPE embarks poor mechanical properties targeting few critical applications. Usage of glass fibres as an additive is well known to the researchers in such criteria. But its industrially processed dust is yet to be investigated for rotational molding process. Thus, in the current context, rotationally molded LLDPE based products are investigated wherein glass fibres dust (GFD) are embedded into thermoplastic resin to examine the variation in strength and stiffness of end product. According to preliminary processing tests conducted, approximately 20% and below of LLPDE/GFD composites was observed to provide better fluidity as a prerequisite for rotomoldability. Hence, an experimental study was performed to benchmark the presence of 10%, 15%, 20% and 25% GFD when mixed with LLDPE for rotomolded product. When treating LLDPE/GFD at distinct weight ratio, the rate of heat transfer was also evaluated using the mold, oven, and internal air temperature. The composite's crystallinity was investigated using DSC analysis to assess the concentration of GFD incorporated in LLDPE. Scanning electron microscopy was furthermore utilized to display the underlying mechanisms of LLDPE/GFD ratios. The present work successfully signifies an increase in an overall performance due to the impact of GFD over unreinforced LLDPE. Therefore, it is hypothesized that till 20% GFD addition in the LLDPE matrix is expected to lead a rise in mechanical properties, thus potentially approaching towards retaining the requisite degree of design freedom of rotational molding process.

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Section: Experimental Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of industrially processed glass fibre dust on mechanical, thermal and morphological properties mixed with LLDPE for rotational molding process

Gupta

Ramkumar

2021

Sādhanā

Self Cite

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“…The highly crystalline structure of HDPE, in comparison to other kinds of PEs, results in very high tensile strength. [3] However, although little research has looked at the rotomolding of nanocomposites, there has recently been a surge in interest in rotational molding of compound components to save money (by employing low-cost fillers) or increase functionality. [4] To rotomould a composite specimen, melt extrusion compounding is an effective way of distributing and dispersing particulate additives in polymer matrices.…”

Section: Introductionmentioning

confidence: 99%

“…The highly crystalline structure of HDPE, in comparison to other kinds of PEs, results in very high tensile strength. [ 3 ]…”

Section: Introductionmentioning

confidence: 99%

Evaluation of mechanical, optical, and antibacterial properties of metal‐oxide dispersed HDPE nanocomposites processed by rotational molding

Ghanbarpour

Moslemi

2022

Polymer Composites

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To investigate the impact of zinc oxide/titanium dioxide nanoparticles on the characteristics of high‐density polyethylene, researchers used the rotational molding technique to produce polymeric nanocomposites. The nanocomposites' morphological, mechanical, optical, as well as biological characteristics, were studied using a range of characterizations. SEM analysis revealed a uniform morphology of ZnO and TiO2 nanoparticles in the polymer matrix, with 80–120 nanometers middle particle dimensions. The existence of ZnO with hexagonal wurtzite form as well as TiO2 with rutile phase was verified by XRD and XRF. Corresponded to the pure polymer, the HDPE‐ZnO/TiO2 nanocomposites' flexural modulus and tensile strength increased, but elongation at break reduced, according to mechanical characterization. UV–visible spectroscopy revealed that the HDPE‐ ZnO/TiO2 nanocomposites showed UV light absorption at wavelengths ranging from 250 to 390 nm. According to antibacterial tests and contact angle measurements, adding metal oxide NPs to HDPE improved hydrophilicity and antibacterial activity.

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“…This, in turn, results in a greater availability of such materials, as well as the development of new cost-effective materials. The use of rotational moulding to produce composite materials has become very popular [ 5 , 19 , 20 ]. The growing interest in environment protection has resulted in numerous studies on advanced materials made of natural raw materials, such as polymer-matrix composites.…”

Section: Introductionmentioning

confidence: 99%

Study on the Properties and Structure of Rotationally Moulded Linear Low-Density Polyethylene Filled with Quartz Flour

2022

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The objective of this study is to determine selected properties of thin-walled rotationally moulded composite parts. Linear low-density polyethylene (LLDPE) filled with quartz flour (QF, 5–35 wt.%) was tested. High-density polyethylene functionalized with maleic anhydride (HDPE-g-MA) was used as a compatibility agent. Polymer samples were prepared with and without the compatibility agent (2 wt.% in relation to the QF content). The study investigated the effect of QF content and HDPE-g-MA on the properties of rotationally moulded parts, including their melt flow rate (MFR), thermal properties (DSC and TGA), thermomechanical properties (VST), mechanical and physical properties, microstructure, and geometry. Results showed that the properties of LLDPE/QF with HDPE-g-MA were significantly higher than those of LLDPE/QF without HDPE-g-MA. It was also found that the compatibility agent improved the composite material’s thermal stability. This improvement was attributed to interactions occurring between the composite material components due to the use of the compatibility agent. In addition to that, microscopic examination demonstrated that the use of HDPE-g-MA improved miscibility of the composite material components. The composite samples containing HDPE-g-MA had better surface geometry.

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An approach toward augmenting materials, additives, processability and parameterization in rotational molding: a review

Cited by 25 publications

References 122 publications

Effect of industrially processed glass fibre dust on mechanical, thermal and morphological properties mixed with LLDPE for rotational molding process

Effect of industrially processed glass fibre dust on mechanical, thermal and morphological properties mixed with LLDPE for rotational molding process

Evaluation of mechanical, optical, and antibacterial properties of metal‐oxide dispersed HDPE nanocomposites processed by rotational molding

Study on the Properties and Structure of Rotationally Moulded Linear Low-Density Polyethylene Filled with Quartz Flour

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