Static and dynamic mechanical characterization of cross-linked polyethylene foams: The effect of density

Kmetty, Ákos; Tomin, Márton; Bárány, Tamás; Czigány, Tibor

doi:10.3144/expresspolymlett.2020.40

Cited by 15 publications

(11 citation statements)

References 10 publications

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“…The results showed a linear relationship between relative density and impact strength. In contrast, our previous study 27 on cross‐linked polyethylene foams showed that the relationship between foam density and mechanical properties could be described by the power law. Marsavina et al 28 also showed that mechanical properties are primarily influenced by the density of the foam, which has a more significant effect than the direction of the load.…”

Section: Introductioncontrasting

confidence: 72%

Evaluating the cell structure‐impact damping relation of cross‐linked polyethylene foams by falling weight impact tests

Tomin

Kmetty

2020

J of Applied Polymer Sci

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This study examines the effect of foam thickness on impact damping properties of closed-cell cross-linked polyethylene foams of different densities. Compression tests and falling weight impact tests were performed to detect the most important mechanisms, which affect the mechanical properties of the foams. The results showed that impact damping properties are significantly influenced by foam thickness, while energy-absorbing capability primarily depends on foam density. The average cell diameter was determined with a

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Section: Introductioncontrasting

confidence: 72%

Evaluating the cell structure‐impact damping relation of cross‐linked polyethylene foams by falling weight impact tests

Tomin

Kmetty

2020

J of Applied Polymer Sci

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“… 63 According to the data obtained at 90 °C, the samples showed around 90% of compression set, but at 80 °C, it was about 80%. Kmetty and coworkers conducted the compression set for cross-linked polyethylene foams, and their results exhibited 95% compression set after 24 h. 64 Furthermore, Park and Kim 65 prepared the ethylene vinyl acetate copolymer (EVA)/multiwalled carbon nanotube (MWCNT) nanocomposite foams and these foams showed around 55% of compression set value at 50 °C. In the present study, the maximum compression set value obtained for cassava starch-based foam is 73.86% and the value is comparatively better than previously reported data for TDI, cross-linked polyethylene, and EVA/MWCNT nanocomposite foams.…”

Section: Resultsmentioning

confidence: 99%

“…According to the data obtained at 90 °C, the samples showed around 90% of compression set, but at 80 °C, it was about 80%. Kmetty and coworkers conducted the compression set for cross-linked polyethylene foams, and their results exhibited 95% compression set after 24 h . Furthermore, Park and Kim prepared the ethylene vinyl acetate copolymer (EVA)/multiwalled carbon nanotube (MWCNT) nanocomposite foams and these foams showed around 55% of compression set value at 50 °C.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Dual-Modified Cassava Starch-Based Biodegradable Foams for Sustainable Packaging Applications

et al. 2022

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Starch and its derivatives have recently emerged as a sustainable and renewable alternative for petroleum-based expanded polystyrene (EPS) and expanded polypropylene (EPP) foam materials. In this study, biodegradable foam materials were prepared from cassava starch using a novel dual modification technique, combining microwave treatment and freeze-drying. The foam materials were prepared from starch solutions microwaved over different intervals. The starch-based foam materials were characterized using Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), 13 C nuclear magnetic resonance ( 13 C-NMR) spectroscopy, and compression set test. Moreover, the water absorption capacities and density values of the foam materials were measured according to ASTM standards. The biodegradability test was carried out according to the aerobic compost environment test. The lowest water absorption capacities of 65.56% and 70.83% were exhibited for the cassava starch foam sample (MWB) prepared at a 20 s microwave treatment time and immersed in distilled water for 2 and 24 h, respectively. Furthermore, the lightweight cassava starch-based foam materials displayed density ranging from 124 to 245 kg/m 3 . The biodegradation test exhibited significant biodegradation of over 50% after 15 days for all the foam materials prepared. These results suggest that the dual-modified cassava starch-based biodegradable foams show potential in sustainable packaging applications by replacing petroleum-based materials.

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“…These foams are extensively used by the vehicle industry, the building industry, the packaging industry, and they can be found in a lot of sports equipment. This results that the volume of the global foam market reached 113 billion dollars in 2019, and the yearly increase is about 4% 1–5 …”

Section: Introductionmentioning

confidence: 99%

Polymer foams as advanced energy absorbing materials for sports applications—A review

Tomin

Kmetty

2021

J of Applied Polymer Sci

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The use of polymer foams is becoming increasingly important due to the attainable weight reduction and value‐added properties. The development of foam structures is a popular research area as they have outstanding energy absorbing capability, which is related to the special deformation mechanisms of the cell structure (cell wall buckling and collapse of the cells). This property is exploited by the sports industry, where the main task of such products is to protect the health of the athlete and to ensure safe sports conditions. This review provides a comprehensive presentation of the advanced energy absorbing applications of polymeric foams in sports. The article presents in detail the processing technologies of polymer foams, as well as the sports‐specific regulations which contain the requirements for sports products. The impact damping of polymeric foams is typically determined by falling weight impact tests, which were used in several previous studies. However, it is a great challenge to compare the published results, as the test parameters and the tested materials are different. Currently, an unexplored field of research is the detailed study of multilayer sandwich foam structures. Understanding the effect of layer order on mechanical properties would help researchers achieve a major improvement in this field.

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Static and dynamic mechanical characterization of cross-linked polyethylene foams: The effect of density

Cited by 15 publications

References 10 publications

Evaluating the cell structure‐impact damping relation of cross‐linked polyethylene foams by falling weight impact tests

Evaluating the cell structure‐impact damping relation of cross‐linked polyethylene foams by falling weight impact tests

Preparation and Characterization of Dual-Modified Cassava Starch-Based Biodegradable Foams for Sustainable Packaging Applications

Polymer foams as advanced energy absorbing materials for sports applications—A review

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