Characterization of microcellular plastics for weight reduction in automotive interior parts

Monterde, Javier Gómez

doi:10.51202/9783182443476-167

Cited by 2 publications

(3 citation statements)

References 192 publications

(265 reference statements)

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“…Additionally, xGnP inherently plays a role as a solid internal lubricant, similar to sliding over chains regarding platelet structure. Contrarily, the addition of graphene platelet nanoparticles had a reducing effect on flowability due to the restriction of chain mobility [ 7 , 29 ].…”

Section: Resultsmentioning

confidence: 99%

“…According to the literature, the addition of nanoparticles enhances cell nucleation even at low concentrations. A fourfold increase in cell density was observed in the presence of 3 wt % nanotalc for a polypropylene-based composite prepared via twin-screw extrusion [ 7 ]. The number of formed cells in a specific area increased with the SCF amount gradually, whereas the concentration of SCF was the most effective parameter of average cell density in the study.…”

Section: Resultsmentioning

confidence: 99%

“…Industrial foam samples have a macrocellular cell structure in the core layer regarding the orientation of additives governed by fountain flow and in efficient cooling [ 4 , 5 ]. To address this problem, there are many studies examining the utilization of nanoparticles from many perspectives [ 6 , 7 , 8 , 9 , 10 ], and graphene nanoplatelets (xGnP) represent the most promising option among nanoparticles thanks to their scalable production and affordability.…”

Section: Introductionmentioning

confidence: 99%

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An Industrial Case for Polypropylene Nanocomposite Foams: Lightweight, Soundproof Exterior Automotive Parts

Ozunlu

Güner

2022

Polymers

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Lightweighting is a challenge for the automotive industry, and foaming is a key technology used to address this problem. A new practical approach is studied to regulate the cell formation of copolymer polypropylene (co-PP) by utilizing graphene nanoplatelets (xGnP) as a process aid during foam injection molding. The approach was designed to enable process freedom to tune part performance by adjusting the amount of xGnP masterbatch. Two different levels of 1–2 wt % xGnP and 0.25–0.35 wt % supercritical fluid (SCF) were investigated. Prepared samples were compared with samples prepared by the traditional method (twin-screw extrusion followed by foam injection molding). The nanocomposite with 2 wt % xGnP comparatively showed about twofold reduction in cell size magnitude. Although the increment in SCF amount resulted in a 47% and 122% enhancement in flexural modulus and strength, respectively, and a 45% loss in Izod unnotched impact strength, the cell size was prone to increasing with regard to low melt strength as compared to neat foams. In conclusion, a 12% weight reduction fulfilled the desired performance parameters in terms of mechanical and sound insulation by utilizing 2 wt % xGnP as a process aid.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%