Mold in Color Diamond White ASA Material for Automotive Exterior Application

Govindaraj, Karthik; Balaji, K V; Vimalathithan, Murukesan; Samir, Gandhi; Rajesh, L.

doi:10.4271/2019-28-2562

Cited by 1 publication

(1 citation statement)

References 3 publications

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“…Recognizing this critical gap, the present study is poised to embark on an investigation aimed at characterizing the size effect exhibited by four polymers: polycarbonate acrylonitrile butadiene styrene (PC/ABS), ASA, PLA, and nylon. Each of these polymers holds distinctive applications in a diverse array of industries; for instance, PC/ABS finds prominent utility in blow-molded seatbacks [36] and automotive exterior components [37], while ASA is widely employed in the automotive industry for its excellent performance in exterior applications [38], as well as in the construction sector [39]. Based on initial findings, it has been suggested that recycling PLA has an environmental impact that is 50 times more favorable than composting and 16 times more favorable than combustion, which is considered quite sustainable [40,41].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Size on the Mechanical Properties of 3D-Printed Polymers

Sadaghian,

Dadmand,

Pourbaba

et al. 2023

Sustainability

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Most of the experiments on additively manufactured polymers are on a small scale, and it remains uncertain whether findings at a small scale can be extrapolated to their larger-scale counterparts. This uncertainty mainly arises due to the limited studies on the effect of size on three-dimensional (3D)-printed polymers, among many others. Given this background, this preliminary study aims to investigate the effect of geometric dimensions (i.e., the size effect) on the mechanical performance of four representative types of 3D-printable polymers, namely, (1) polycarbonate acrylonitrile butadiene styrene (PC/ABS), (2) acrylonitrile-styrene-acrylate (ASA), (3) polylactic acid (PLA) as a bio biodegradable and sustainable material, and (4) polyamide (PA, nylon), based on compression, modulus of elasticity, tension, and flexural tests. Eight different sizes were investigated for compression, modulus of elasticity, and tension tests, while seven different sizes were tested under flexure as per relevant test standards. A material extrusion technique was used to 3D-print the polymers in a flat build orientation and at an infill orientation angle of 45°. The results have shown that the mechanical properties of the 3D-printed polymers were size-dependent, regardless of the material type, with the most significant being flexure, followed by tension, compression, and modulus of elasticity; however, no clear general trend could be identified in this regard. All the materials except for nylon showed a brittle failure pattern, characterized by interfacial failure rather than filament failure. PLA outperformed the other three polymer specimens in terms of strength, irrespective of the type of loading.

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