Effects of cohesive interfaces and polymer viscoelasticity on improving mechanical properties in an architectured composite

Imam, Muhammed R.; Sain, Trisha

doi:10.1016/j.ijsolstr.2018.10.008

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…Further consideration of the toughness for samples with MAPTES- and APTES-functionalized microspheres shows that stronger interfacial interactions result in lower toughness. This finding was also reported by Imam and Sain, in which the weaker interfaces led to higher toughness after investigating composite materials formed by backbone matrix materials (steel, aluminum, and poly(methyl methacrylate)) and soft fillers (polyurethane and silica nanoparticle reinforced nanocomposite gel) …”

Section: Resultssupporting

confidence: 84%

“…This finding was also reported by Imam and Sain, in which the weaker interfaces led to higher toughness after investigating composite materials formed by backbone matrix materials (steel, aluminum, and poly(methyl methacrylate)) and soft fillers (polyurethane and silica nanoparticle reinforced nanocomposite gel). 38 To better understand the tensile test results and fracture characteristics of printed microsphere-filled samples, fractography was performed on all the fractured specimens. SEM micrographs of fracture surfaces of printed resins with glass as well as MAPTES-, DTES-, and APTES-functionalized microspheres are shown in Figure 5.…”

Section: Mechanical Properties and Fractographymentioning

confidence: 99%

See 1 more Smart Citation

Digital Light Processing of Highly Filled Polymer Composites with Interface-Mediated Mechanical Properties

Wang

Delarue

McAninch

et al. 2022

ACS Appl. Polym. Mater.

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Digital light processing (DLP) is a popular method of additive manufacturing of thermosetting polymer composites with high resolution. While DLP of composite systems has been demonstrated, only a few studies comment on the role of interfacial interactions on resulting mechanical properties. In this work, high volume fraction (50 vol %) glass microsphere-reinforced composites were fabricated via DLP. The effects of surface chemistry and interfacial interactions on the mechanical and thermal properties of additively manufactured composites were investigated. Interfacial interactions between the urethane acrylate-based resin system and glass microspheres were found to dictate the overall performance of the composites. Greater resin−glass wettability led to simultaneous and anomalous increases in stiffness, toughness, and strength. Interestingly, composites where glass was functionalized to covalently bond with the resin phase only showed moderate improvements in mechanical properties as compared to systems with high resin−glass wettability. Finally, complex structures with fine details were printed to demonstrate printability.

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Section: Resultssupporting

confidence: 84%

Section: Mechanical Properties and Fractographymentioning

confidence: 99%