Evaluation of Grinding of Unfilled and Glass Fiber Reinforced Polyamide 6,6

Cavalcante, Bruno

doi:10.3390/polym12102288

Cited by 10 publications

(6 citation statements)

References 21 publications

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“…Due to the different data acquisition channels, the original data were not synchronized, and a post-processing phase fused all the data. The selected grinding parameters for this experiment diverged from those of previous works [ 19 , 21 ] due to the sample geometry and sampling limitations. The length of the grinding wheel path for force acquisition was only 60 mm.…”

Section: Resultsmentioning

confidence: 99%

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Forces and Specific Energy of Polyamide Grinding

Cavalcante

Massari²,

Rutigliano³

2021

Materials

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This work investigated the grinding process of reinforced and nonreinforced polyamide materials using an Al2O3 grinding wheel. Samples were ground using a custom-made setup of sensors to evaluate in-line temperature, forces, and power. The surface roughness and images were acquired to assess the quality of the final products. The novelty of the work is to correlate the energy evaluation with the process efficiency during processing. Grinding at high cutting depths achieves good surface quality indicators, such as Ra < 5 μm and Rz < 5 μm. Results also reveal that special attention should be given to the infeed speed when cutting unfilled materials to produce good results. With high values of energy partition, the specific grinding energy stabilizes around 60 J/mm³. Strains must be applied quickly because, to ensure the unfilled materials respond better at this cutting depth, the reinforced materials suffer a slight degradation of quality.

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Section: Resultsmentioning

confidence: 99%

“…As demonstrated in previous research, aluminum oxide (Al 2 O 3 ) grain wheels were selected due to their availability, price, and compatibility [ 19 ]. Two wheels, coded 45A120-5G11RM-LV233/35 and 87A80-2H13RM-JV56/35 (ELBE Schleifmittelwerk GmBh & Co KG, Sachsenheim, Germany), had an initial diameter of 406 mm and a thickness of 30 mm.…”

Section: Methodsmentioning

confidence: 99%

Forces and Specific Energy of Polyamide Grinding

Cavalcante

Massari²,

Rutigliano³

2021

Materials

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“…Spina and Cavalcante [23] evaluated the grinding of unfilled and glass fiber reinforced polyamide 66. The results showed that the presence of glass fibers resulted in lower surface quality of ground polyamide 66.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Development of Waste-Based Polymer Materials: A Review

2022

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Limited petroleum sources, suitable law regulations, and higher awareness within society has caused sustainable development of manufacturing and recycling of polymer blends and composites to be gaining increasing attention. This work aims to report recent advances in the manufacturing of environmentally friendly and low-cost polymer materials based on post-production and post-consumer wastes. Sustainable development of three groups of materials: wood polymer composites, polyurethane foams, and rubber recycling products were comprehensively described. Special attention was focused on examples of industrially applicable technologies developed in Poland over the last five years. Moreover, current trends and limitations in the future “green” development of waste-based polymer materials were also discussed.

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“…Polyamide 66 (PA66) is a very important thermoplastic polymer material and has been widely used in engineering fields with the advantages of high-strength, good stability, light weight, and relatively low cost [ 1 , 2 , 3 ]. However, with the rapid development of science and technology, the original PA66 can no longer meet the requirements of contemporary applications, especially in the fields that require high mechanical properties [ 4 , 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

High-Strength GO/PA66 Nanocomposite Fibers via In Situ Precipitation and Polymerization

Shen

et al. 2021

Polymers

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The uniform dispersion of graphene oxide (GO) and strong interfacial bonding are the key factors in achieving the high mechanical strength of GO/polymer composites. It is still challenging to prepare GO/PA66 composites with uniform GO dispersion by the in situ polymerization method. In this paper, we prepare GO/PA66 salt nanocomposite by in situ precipitating PA66 salt with GO in ethanol. The GO/PA66 nanocomposite fibers are then fabricated using the as-prepared GO/PA66 salt by in situ polymerizing and melt spinning. By tuning the GO content, the tensile strength and Young’s modulus of the GO/PA66 fibers are increased from 265 ± 18 to 710 ± 14 MPa (containing 0.3 wt% GO) and from 1.1 ± 0.08 to 3.8 ± 0.19 GPa (containing 0.5 wt% GO), respectively. The remarkable improvements are attributed to the uniform dispersion of GO in the GO/PA66 salt nanocomposite via ionic bonding and hydrogen bonding in the in situ precipitation process, and the covalent interfacial bonding between the GO and PA66 during the in situ polymerization process. This work sheds light on the easy fabrication of high-performance PA66-based nanocomposites.

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Evaluation of Grinding of Unfilled and Glass Fiber Reinforced Polyamide 6,6

Cited by 10 publications

References 21 publications

Forces and Specific Energy of Polyamide Grinding

Forces and Specific Energy of Polyamide Grinding

Recent Advances in Development of Waste-Based Polymer Materials: A Review

High-Strength GO/PA66 Nanocomposite Fibers via In Situ Precipitation and Polymerization

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