Effect of microcellular foaming on the fracture behavior of ABS polymer

Gómez-Monterde, J.; Schulte, Manfred; Ilijevic, Stefan; Hain, J.; Sánchez‐Soto, Miguel; Santana, Oliverio J.; Maspoch, M. Ll.

doi:10.1002/app.43010

Cited by 16 publications

(15 citation statements)

References 36 publications

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“…The resulting mechanical strength of components produced through MIM plays a significant role to expand their applications. 64,65 Gomez-Monterde et al 66 investigated using MuCell V R in combination with acrylonitrile butadiene styrene (ABS) component. In the research, square components were produced having characteristics of solid, 10% weight reduction and 17% weight reduction.…”

Section: Alteration Of the Mechanical Propertiesmentioning

confidence: 99%

Advances in microcellular injection moulding

Llewelyn

Rees

Griffiths

et al. 2020

Journal of Cellular Plastics

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Injection moulding is a well-established replication process for the cost-effective manufacture of polymer-based components. The process has different applications in fields such as medical, automotive and aerospace. To expand the use of polymers to meet growing consumer demands for increased functionality, advanced injection moulding processes have been developed that modifies the polymer to create microcellular structures. Through the creation of microcellular materials, additional functionality can be gained through polymer component weight and processing energy reduction. Microcellular injection moulding shows high potential in creating innovation green manufacturing platforms. This review article aims to present the significant developments that have been achieved in different aspects of microcellular injection moulding. Aspects covered include core-back, gas counter pressure, variable thermal tool moulding and other advanced technologies. The resulting characteristics of creating microcellular injection moulding components through both plasticising agents and nucleating agents are presented. In addition, the article highlights potential areas for research exploitation. In particular, acoustic and thermal applications, nano-cellular injection moulding parts and developments of more accurate simulations.

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Section: Alteration Of the Mechanical Propertiesmentioning

confidence: 99%

Advances in microcellular injection moulding

Llewelyn

Rees

Griffiths

et al. 2020

Journal of Cellular Plastics

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“…Reported values for K ‾Ic in the literature for macrocellular and microcellular polymeric foams are plotted as a function of relative density in Fig. 6b [4,[27][28][29][30][31]. The K ‾Ic versus ρ r curve of the macrocellular data is well approximated by Eq.…”

Section: Mechanical Properties Of the Pmma Foamsmentioning

confidence: 82%

The influence of cell size on the mechanical properties of nanocellular PMMA

León

Loock

Bernardo

et al. 2019

Polymer

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The mechanical response of cellular PMMA of cell size below 50 nm has been measured. • Reducing the cell size from the micro to the nanoscale does not affect the Young's modulus. • Reducing the cell size from the micro to the nanoscale does not affect the yield strength. • The fracture toughness (for a given density) increases when the cell size transitions from the micrometric to the nanometric range.

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“…Efforts to characterize the mechanical performance of polymer foams have been made during the past years, focusing on aspects such as strength and stiffness, energy absorption, impact strength, creep behavior, and dynamic-mechanical properties, as well as the influence of foam aspects such as composition, density, and cellular structure [20,21]. Particularly, several reports have considered the mechanical characterization of microcellular ABS-based foams, focusing on specific aspects such as the effects of processing and addition of secondary phases on foam density and cellular structure morphology and, as a consequence, on the mechanical properties of the resulting microcellular foams [22,23,24]. The addition of secondary phases, especially nanometric-sized particles, has been shown to favor cell nucleation during foaming, contributing to cell size reduction and cell density enhancement, which, together with their reinforcement of the polymer phase, results in foams with enhanced stiffness, strength, and improved storage modulus [25].…”

Section: Introductionmentioning

confidence: 99%

Effects of a Phosphorus Flame Retardant System on the Mechanical and Fire Behavior of Microcellular ABS

et al. 2018

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The present work deals with the study of phosphorus flame retardant microcellular acrylonitrile–butadiene–styrene (ABS) parts and the effects of weight reduction on the fire and mechanical performance. Phosphorus-based flame retardant additives (PFR), aluminum diethylphosphinate and ammonium polyphosphate, were used as a more environmentally friendly alternative to halogenated flame retardants. A 25 wt % of such PFR system was added to the polymer using a co-rotating twin-screw extruder. Subsequently, microcellular parts with 10, 15, and 20% of nominal weight reduction were prepared using a MuCell® injection-molding process. The results indicate that the presence of PFR particles increased the storage modulus and decreased the impact energy determined by means of dynamic-mechanical-thermal analysis and falling weight impact tests respectively. Nevertheless, the reduction of impact energy was found to be lower in ABS/PFR samples than in neat ABS with increasing weight reduction. This effect was attributed to the lower cell sizes and higher cell densities of the microcellular core of ABS/PFR parts. All ABS/PFR foams showed a self-extinguishing behavior under UL-94 burning vertical tests, independently of the weight reduction. Gradual decreases of the second peak of heat release rate and time of combustion with similar intumescent effect were observed with increasing weight reduction under cone calorimeter tests.

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Effect of microcellular foaming on the fracture behavior of ABS polymer

Cited by 16 publications

References 36 publications

Advances in microcellular injection moulding

Advances in microcellular injection moulding

The influence of cell size on the mechanical properties of nanocellular PMMA

Effects of a Phosphorus Flame Retardant System on the Mechanical and Fire Behavior of Microcellular ABS

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