Influence of Initial Fibre Length and Content Used in the Injection Moulding of CFRP on the Properties of C/C and C/C-SiC Composites

Husam Ahmad; Jonas Stiller; Erik Päßler; Daisy Nestler; Guntram Wagner; Lothar Kroll

doi:10.4028/www.scientific.net/KEM.809.171

Paper Titles

Powder Injection Molding of Oxide Ceramic CMC
p.148

Modification of the Thermoset Injection Moulding Process for Shaping to Increase the Fibre Length in C/C-SiC Ceramics Produced by the LSI Process
p.153

Evaluation of Ceramic Matrix Composite Edge and Surface Damage
p.161

Custom-Made Reinforcement Structures Made of Inorganic Fibers Challenges, Chances and Technical Approaches
p.167

Influence of Initial Fibre Length and Content Used in the Injection Moulding of CFRP on the Properties of C/C and C/C-SiC Composites
p.171

One-Sided Resistance Spot Welding of Plastic-Metal Hybrid Joints - Characterization of the Joining Zone
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Metal Polymer Connections: Laser-Induced Surface Enlargement Increases Joint Strength
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Influence of Process Parameters, Surface Topography and Corrosion Condition on the Fatigue Behavior of Steel/Aluminum Hybrid Joints Produced by Magnetic Pulse Welding
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Sintered Connection - A Steel/CFRP Connection Module
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 809Influence of Initial Fibre Length and Content Used...

Influence of Initial Fibre Length and Content Used in the Injection Moulding of CFRP on the Properties of C/C and C/C-SiC Composites

Abstract:

The production of C/C-SiC composites comprises a three-stage process: forming (CFRP-composite), pyrolysis (C/C-composite) and liquid silicon infiltration (C/C-SiC). A new promising approach for the manufacturing of CFRP intermediate composites is the injection moulding of customised granulates (novolac resin, hardener, processing additives and short carbon fibre) produced by compounding technique. To date, a direct dosing of short carbon fibre into the compounder was technically not realisable due to fibre separation and electrostatic charging in the hopper. A possible substitute solution has been the direct feeding of a carbon fibre bundle from a roving into the compounder. However, this is associated with a severe damage of the fibres and an inaccurate adjustment of the fibres content. In the present article, new chopped carbon fibres provided with an adapted sizing to be directly dosed into the compounder are used. The fibres possess a predefined length of 3 and 6 mm and their content amounts to 50 and 58 wt.%. The influence of the initial fibre length and fibre content on the physical and mechanical properties of the resulting CFRP-, C/C-and C/C-SiC-composites is presented and discussed. In addition, the impact of fibre feeding procedure at the compounding stage on the microstructure is considered

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Periodical:

Key Engineering Materials (Volume 809)

Pages:

171-179

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.809.171

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Online since:

June 2019

Authors:

Husam Ahmad*, Jonas Stiller, Erik Päßler, Daisy Nestler, Guntram Wagner, Lothar Kroll

Keywords:

Ceramic-Matrix Composite, Liquid Silicon Infiltration (LSI), Mechanical Properties, Short Carbon Fibre, Thermoset Injection Moulding

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