Verbundwerkstoffe - 24. Symposium Verbundwerkstoffe und Werkstoffverbunde
Vortrag
23.05.2024
Design of a Hybrid Composite Made of UD Fiber-Reinforced Thermoset and Short-Fiber-Reinforced Thermoplastic Material
ND

Nicolas Dorr (M.Sc.)

Mubea Fahrwerksfedern GmbH

Dorr, N. (V)¹; Busch, A.²; Brandt, R.³
¹Mubea Fahrwerksfedern GmbH, Attendorn; ²Mubea Fahrwerksfedern Gmbh, Attendorn; ³University of Siegen
Vorschau
22 Min. Untertitel (CC)

Increasing requirements due to e-mobility influence the subcomponents of the chassis directly. Hybrid structures proved to be effective within this context. In the state of the art, different metal-plastic hybrids are already presented. A next step in the further development of hybrids is the substitution of steel with continuous fiber-reinforced thermosets. The intrinsic hybrid composite of thermoset as a stiffening structure and thermoplastic as a load introduction element is developed for application in components subject to high cyclic loads. Especially for chassis parts the substitution of steel leads to weight savings and creates potential for CO2 savings. This work sets the development focus on the characterization of the bonding between thermoset and thermoplastic. Therefore the adhesion strength between both materials is investigated. The hybrid composite analyzed consists of thermoset GFRP, comprising 66% fiber volume content and polyamide 6.6 with 30 % short glass fiber reinforcement (PA 6.6 GF30). Using the pretreatment options presented in the state of the art, test specimens were built up in a series-like process and tested in 3 different phases, namely (1) static at room temperature and (2) at 80°C and after exposure to salt water, and (3) a short bending test. The thermoset inserts are treated with different mechanisms, and finally over-injected with the thermoplastic material. The following mechanisms are considered in this investigation: Plain surface cleaned with isopropanol, chemical coupling agent, laser, plasma, open fibers, blasting, and preheating the insert before over-injection.

Abstract

Abstract

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