Strength Development in Overmolded Structures

Donderwinkel, T.G.; Drongelen, Martin van; Wijskamp, Sebastiaan

doi:10.1007/978-3-662-60809-8_24

Cited by 4 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among these mentioned techniques for composite production, the overmoulding process is used as an alternative method for the assembly of dissimilar polymeric materials and offers several advantages in terms of ease of processability, decrease in cycle time, and high production e ciency also, weight saving due to the absence of screws, bolts and rivets [23,24]. The overmoulding process, which requires a previously prepared insert or substrate placed into the mold cavity and polymeric material shot directly on it, is a promising technology for the manufacturing of complex thermoplastic composite parts with integrated functionality [25]. The main challenge for overmoulding process is the weak adhesion between the insert and overmoulded materials to obtain structural composites with improved mechanical properties.…”

Section: 5% [8]mentioning

confidence: 99%

Interfacial engineered design of upcycled graphene and hemp fiber reinforced polypropylene compounds as an injection grade for overmoulding process with bio-based prepregs

Aliyeva

Yağcı²,

Şaş

et al. 2023

Preprint

View full text Add to dashboard Cite

The design of lightweight composite structures is a principal keystone in improving part performance by reducing adverse environmental impacts and adopting energy-efficient manufacturing technologies. This study replaced long glass fiber reinforced homoPP compounds as an injection grade with short hemp fiber reinforced homopolymer polypropylene (homoPP) by incorporating graphene nanoplatelets (GNP) produced from the source of recycled carbon black coming from pyrolysis of waste tires by providing 15% lightweighting. With new compound formulation by adjusting the amounts of compatibilizer and GNP, injection moulding process was integrated with overmoulding process by using bio-based UD prepregs to enhance the adhesion of injected part and interfacial interaction by decreasing the stress concentrations in the structure. This novel hybrid composite design having 40% hemp fiber, 1.0wt% GNP and 2.7wt% compatibilizer provided to improve flexural modulus and strength by 169% and 67.9%, respectively, compared to neat homoPP. For overmoulding process, bio-based natural fibers reinforced UD tapes were used as an insert and combined with injected hemp fiber reinforced composites with the enhancement of 211% and 93.6% in tensile modulus and strength compared to neat homoPP. This work achieved to convert conventional composite structures into recyclable and sustainable thermoplastic composites having multi-scale reinforcements with tailorable functionality.

show abstract

Section: 5% [8]mentioning

confidence: 99%

Interfacial engineered design of upcycled graphene and hemp fiber reinforced polypropylene compounds as an injection grade for overmoulding process with bio-based prepregs

Aliyeva

Yağcı²,

Şaş

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Multi-material injection involves the injection of the first material, substrate, into the mold, and then the subsequent material is injected onto the solidified substrate [3]. On the other hand, insert overmolding requires a previously prepared insert placed into the mold cavity, and then polymeric material that can be called overmolded material is injected directly on it [4]. Thus, both variants of the overmolding processes promote the cost, process cycle and multifunctionally of the parts by eliminating the assembly without adapting any fastener, flexibility addition to the rigid parts, and lowering the process times via automated manufacturing implementations.…”

Section: Introductionmentioning

confidence: 99%