Influence of fluidity improver on metal-polymer direct joining via injection molding

Wang, Shuohan; Kimura, Fumihiko; Zhao, Shuaijie; Yamaguchi, Eiji; Ito, Yuuka; Kajihara, Yusuke

doi:10.1016/j.precisioneng.2021.07.001

Cited by 22 publications

(6 citation statements)

References 18 publications

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“…Wang et al [ 80 ] studied the effects of a flow modifier additive on the joining strength of glass‐fiber reinforced polyamide 6 (PA6‐30GF) and 5052 aluminum alloy single‐lap joints. Metal substrates were treated with sandblasting and immersion in hot water, to form needle‐shaped nanoscale crystals on the microscale blasted structure.…”

Section: Correlation Between Metal Surface Preparation Methods Proces...mentioning

confidence: 99%

Injection overmolding of polymer‐metal hybrid structures: A review

Vasconcelos

Oliveira

Amancio‐Filho

et al. 2023

Polymer Engineering & Sci

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Polymer‐metal hybrid (PMH) structures, also known as metal‐polymer hybrid (MPH) structures, have received considerable attention from industry and academia due to the societal need for developing strong, lightweight, and durable structures for several applications in strategic areas, such as transportation, household appliances, energy, and biomedical devices. Injection overmolding is an advantageous technique for manufacturing PMH structures as it combines automation, a fast process, cost efficiency, and dimensional accuracy. This review presents a comprehensive discussion of recent advances reported in the literature concerning PMH structures fabricated by direct‐adhesion injection overmolding. Following a general introduction, the fundamentals of the injection overmolding technique are presented. Next, the potential of some metal surface preparation methods to ensure good adhesion, and thus outstanding mechanical performance in injection overmolded PMH structures is discussed. Correlations are then made between metal surface features, processing parameters, and the mechanical strength of injection overmolded polymer‐metal joints. Some applications of injection overmolded PMH structures are explored, and, lastly, the main conclusions and prospects on the use of injection overmolding are presented.

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Section: Correlation Between Metal Surface Preparation Methods Proces...mentioning

confidence: 99%

Injection overmolding of polymer‐metal hybrid structures: A review

Vasconcelos

Oliveira

Amancio‐Filho

et al. 2023

Polymer Engineering & Sci

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“…[17][18][19] The direct-adhesion injection overmolding technique has been employed for joining polyamide and glassfiber-reinforced polyamide composites with surfacetextured lightweight aluminum-based alloys. [20][21][22][23] These studies identified mechanical interlocking as the main adhesion mechanism of these joints and demonstrated a clear correlation between the joining strength and the degree to which the polymer fills in the features of the metal surface. However, these composites, with a high content of micron-sized glass fibers, exhibit low fluidity, which can potentially limit filling in intricate surface features on the metal.…”

Section: Introductionmentioning

confidence: 96%

“…In the direct‐adhesion injection overmolding method, the metal substrate undergoes physical and/or chemical surface treatments that result in a larger interfacial area, leading to improved stress distribution and enhanced mechanical performance 17–19 . The direct‐adhesion injection overmolding technique has been employed for joining polyamide and glass‐fiber‐reinforced polyamide composites with surface‐textured lightweight aluminum‐based alloys 20–23 . These studies identified mechanical interlocking as the main adhesion mechanism of these joints and demonstrated a clear correlation between the joining strength and the degree to which the polymer fills in the features of the metal surface.…”

Section: Introductionmentioning

confidence: 99%

Development of polyamide 6‐graphene oxide nanocomposite and direct‐joining with aluminum alloy for lightweight engineering applications

Luiz,

Oliveira,

Canto

2023

Polymer Engineering & Sci

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Lightweight polyamide composites and structures have been widely studied and employed in several industrial sectors. In this study, the development of a nanocomposite of polyamide 6 and graphene oxide (PA6‐GO) by melt‐compounding and the joining with aluminum alloy AA6061 through direct‐adhesion injection overmolding are addressed. PA6‐GO nanocomposite exhibited well‐dispersed thin (300 nm) GO platelets distributed within the PA6 matrix, which resulted in an increase of 21% in the tensile modulus and 16% in the yield stress for a filler loading of 0.5 wt%. PA6‐GO/AA6061 hybrid joints showed good mechanical anchorage through the complete filling of the polymer into micro‐scale grooves designed onto the metal surface, which ensured outstanding shear strength of 7.1 ± 1.0 MPa, comparable to other polyamide‐metal hybrid joints reported in the literature. This indicates that the processing routes and materials developed are promising for lightweight engineering applications.Highlights A PA6‐GO nanocomposite with enhanced tensile properties was developed. A joint of PA6‐GO and AA6061 with outstanding shear strength was obtained. Fast and efficient melt‐processing routes were employed. These materials are promising for lightweight engineering applications.

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“…Injection molded joining is another metal–polymer joining process that injects the polymer into the mold through a nozzle. After the mold is filled, a pressure is applied to press the melt and avoid shrinkage during solidification [ 17 , 18 , 19 , 20 ]. This process stands out for producing complex shapes at a high production rate.…”

Section: Introductionmentioning

confidence: 99%

“…This process stands out for producing complex shapes at a high production rate. However, low joint strength and additive pre-treatment requirements are considered among the major disadvantages of injection molding [ 19 ]. Friction-assisted joining is another category of metal–polymer joining where a tool plunges the metallic part into the polymer surface and rotates at a prescribed speed for a specific time [ 21 , 22 , 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Technical Review of the Friction Stir Welding of Metal-to-Polymer Hybrid Structures

et al. 2022

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Metal–polymer hybrid structures are becoming desirable due to their wide range of applications in the automotive, aerospace, biomedical and construction industries. Properties such as a light weight, high specific strength, and design flexibility along with the low manufacturing costs of metal–polymer hybrid structures make them widely attractive in several applications. One of the main challenges that hinders the widespread utilization of metal–polymer hybrid structures is the challenging dissimilar joining of metals to polymers. Friction stir welding (FSW) shows a promising potential in overcoming most of the issues and limitations faced in the conventional joining methods of such structures. Several works in the literature have explored the FSW of different metal-to-polymer combinations. In some of the works, the joints are examined based on processing parameter optimization, microstructural characteristics, and mechanical performances. It is, therefore, important to summarize the findings of these works as a means of providing a reference to researchers to facilitate further research on the utilization of FSW in joining metals to polymers. Thus, this work aims to present a comprehensive technical review on the FSW technique for joining metals to polymers by reviewing the reported literature findings on the impact of materials, tools, process parameters, and defects on the strength and microstructure of the produced joints. In addition, this work reviews and presents the latest practices aiming to enhance the metal–polymer joint quality that have been reported in the literature.

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Influence of fluidity improver on metal-polymer direct joining via injection molding

Cited by 22 publications

References 18 publications

Injection overmolding of polymer‐metal hybrid structures: A review

Injection overmolding of polymer‐metal hybrid structures: A review

Development of polyamide 6‐graphene oxide nanocomposite and direct‐joining with aluminum alloy for lightweight engineering applications

A Comprehensive Technical Review of the Friction Stir Welding of Metal-to-Polymer Hybrid Structures

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