Basics of Troubleshooting in Plastics Processing

Subramanian, Muralisrinivasan Natamai

doi:10.1002/9781118071724

Cited by 13 publications

(9 citation statements)

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“…Thermoplastic materials are of interest in industry due to their low cost and ease of processing and recyclability, in addition to other properties such as rigidity and high impact strength. 1–5 Polyamide is a semi-crystalline polymer with low density, excellent wear and chemical resistance, alongside excellent strength, hardness and impact properties. 6 Polyamides have been used in various applications for nearly 80 years, and their sector is expected to grow over 6.1% from 2017 to 2025 since polyamide can be easily modified to specific requirements in a wider range of applications.…”

Section: Introductionmentioning

confidence: 99%

Functionalised graphene effect on the mechanical and thermal properties of recycled PA6/PA6,6 blends

Korkees

Aldrees

Barsoum

et al. 2021

Journal of Composite Materials

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Limiting the generation of polymers waste and maximizing their recyclability and recovery have been the main focus of the research and industry in recent years. Recycling of polyamides leads to the loss in mechanical and thermal properties, therefore, in order to reuse recycled nylons, an enhancement in their properties is desired. Enhancing the properties of recycled polyamides by the addition of functionalised graphene nanoparticles (GNPs) was the goal of this study. Recycled PA6/PA6,6 blends and functionalised graphene nanocomposites were prepared using hot-melt extrusion process. Two types of functionalised graphene were used: O2-GNPs and Amine-GNPs. The nanofillers didn’t affect the crystallinity of the recycled nylon, while the presence of functionalised graphene increased the thermal conductivity by enabling better heat transfer routes within the polymer. The microstructure of the materials was characterised confirming the successful dispersion but with a slight variation in GNPs/Polymer bonding depending on the functionalisation type. The strong nylon-to-graphene interfacial hydrogen bonding increased the mechanical properties of the recycled nylon nanocomposites. The functionalised nanoparticles slowed down the segmental motion of the polymer chain and decreased the ductility with increasing GNPs contents up to 10 wt%. The overall behaviour of recycled nylon nanocomposites showed dependency on the type of functionalisation and concentration of GNPs with better improvement in the overall properties using 2 wt% Amine-GNPs. These enhanced properties make functionalised graphene/recycled nylon nanocomposites a promising new class of advanced materials.

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Section: Introductionmentioning

confidence: 99%

Functionalised graphene effect on the mechanical and thermal properties of recycled PA6/PA6,6 blends

Korkees

Aldrees

Barsoum

et al. 2021

Journal of Composite Materials

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“…In another case, high-density polyethylene (HDPE) poses excellent mechanical properties, such as high stiffness and melting point, as well as high compressive tensile strength that outperforms other polyethylenes (e.g., low density polyethylene) [ 15 , 28 , 29 ]. It has a high strength-to-density ratio as compared to another thermoplastic.…”

Section: Additive Manufacturing Technologiesmentioning

confidence: 99%

Current State and Challenges of Natural Fibre-Reinforced Polymer Composites as Feeder in FDM-Based 3D Printing

et al. 2021

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As one of the fastest-growing additive manufacturing (AM) technologies, fused deposition modelling (FDM) shows great potential in printing natural fibre-reinforced composites (NFRC). However, several challenges, such as low mechanical properties and difficulty in printing, need to be overcome. Therefore, the effort to improve the NFRC for use in AM has been accelerating in recent years. This review attempts to summarise the current approaches of using NFRC as a feeder for AM. The effects of fibre treatments, composite preparation methods and addition of compatibilizer agents were analysed and discussed. Additionally, current methods of producing feeders from NFRCs were reviewed and discussed. Mechanical property of printed part was also dependent on the printing parameters, and thus the effects of printing temperature, layer height, infill and raster angle were discussed, and the best parameters reported by other researchers were identified. Following that, an overview of the mechanical properties of these composites as reported by various researchers was provided. Next, the use of optimisation techniques for NFRCs was discussed and analysed. Lastly, the review provided a critical discussion on the overall topic, identified all research gaps present in the use of NFRC for AM processes, and to overcome future challenges.

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“…10,11 During heating, a clamped sheet on account of thermal expansion first bows while it is still solid. This is followed by softening.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to the temperature related factors which are governed by sheet heating, the quality of thermoformed plastic parts depends on the material characteristics, the vacuum/pressure applied and the assisting plug related parameters. 10,11 During heating, a clamped sheet on account of thermal expansion first bows while it is still solid. This is followed by softening.…”

Section: Introductionmentioning

confidence: 99%

Studies on the stretching behaviour of medium gauge high impact polystyrene sheets during positive thermoforming

Kommoji

Banerjee

Bhatnagar

et al. 2014

Journal of Plastic Film & Sheeting

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High impact polystyrene sheets (HIPS) of 1.5 mm and 2.5 mm thicknesses were thermoformed on moulds of different parameters at sheet heating temperatures of 130 C and 140 C. Formability studies indicated no difference in wall thickness distribution at different sheet temperatures. Due to non-uniform stretching of the sheet, wall thickness distribution along the slant length was found to have three regions. In the regions near the mould corner and clamp point, wall thickness was found to decrease with increase in distance from the corner, in these zones. The decrease near the corner was much greater and sharper than that near the clamp point. The decrease in both regions was found to increase at higher depths of draw and decrease at higher draft angles. In the intermediate portion of the slant length, no significant variation in wall thickness was observed.

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Basics of Troubleshooting in Plastics Processing

Cited by 13 publications

References 0 publications

Functionalised graphene effect on the mechanical and thermal properties of recycled PA6/PA6,6 blends

Functionalised graphene effect on the mechanical and thermal properties of recycled PA6/PA6,6 blends

Current State and Challenges of Natural Fibre-Reinforced Polymer Composites as Feeder in FDM-Based 3D Printing

Studies on the stretching behaviour of medium gauge high impact polystyrene sheets during positive thermoforming

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