CATPUAL - An Innovative and High-Performance Hybrid Laminate with Carbon Fibre-Reinforced Thermoplastic Polyurethane

Abstract

In consideration of environmental aspects and limited availability of resources, the focus of automotive and aerospace industry lies on significant weight optimisations especially for moving loads. In this context, innovative lightweight materials as well as material combinations need to be developed. A considerable potential for lightweight structures can be found in fibre- or textile-reinforced semi-finished products. Due to their specific characteristics and extraordinary structural diversity, thermoset and thermoplastic matrix systems can be used. In particular, carbon fibres as reinforcing components combined with a thermoplastic matrix polymer are able to create new high-performance applications. Besides the significant lightweight characteristics of the fibre-plastic-composites, in some instances contrary requirements must be satisfied in many areas, such as strength and ductility. In this field, the combination of fibre-reinforced polymers with aluminium or titanium sheets creates unique composite materials, so called hybrid laminates, which fulfil the unusual expectations.The focus of the current study lies on the development of a new thermoplastic hybrid laminate named CATPUAL (CArbon fibre-reinforced Thermoplastic PolyUrethane/ALuminium laminate). The structure of the laminate is an alternating sequence of thin aluminium sheets (EN AW 6082-T4) and fibre-reinforced thermoplastic polyurethane (TPU). The individual layers are consolidated to each other by using a hot pressing process. First results showed that the impregnation capability of thermoplastic polyurethane surpasses any other commercially available hybrid laminates. Furthermore, the mechanical properties regarding bending strength and interlaminar shear strength are exceeding the state of the art drastically.

Influence of the cooling behaviour on mechanical properties of carbon fibre-reinforced thermoplastic/metal laminates

“…Publications on carbon fibre-reinforced PA prepregs and aluminium alloy sheets are issued under CAPAAL (CArbon fibre-reinforced PolyAmide/ALuminium laminate) [12][13][14][15][16]. New developments show investigations on the material compound CATPUAL (CArbon fibre-reinforced Thermoplastic PolyUrethane/ALuminium laminate) [17].…”

Influence of Aluminum Surface Treatment on Tensile and Fatigue Behavior of Thermoplastic-Based Hybrid Laminates

“…Hybrid laminates based on fiber-reinforced thermoplastics in combination with aluminum alloys of the 5000 and 6000 series are an interesting alternative. Polypropylene [10], polyamide 6 (PA6) [11], and thermoplastic polyurethane [12] are used as matrix materials in the FRP layer. The layered combination of unidirectional carbon fiber-reinforced PA6 and aluminum sheets AA6082 is known as CAPAAL.…”

Monitoring the Structural Health of Glass Fibre-Reinforced Hybrid Laminates Using Novel Piezoceramic Film

“…), which are increasingly being replaced by hybrid material systems based on metal/plastic pairings [ 19 ]. The aim is to combine the high strength and stiffness properties of metal with the high design freedom of plastics [ 20 ]. With the targeted use of the “right” material at the “right” place, damage tolerance and damping can be significantly increased compared to the individual components [ 21 ].…”