Polyetheretherketone (PEEK) is a high-performance thermoplastic biomaterial which is currently used in a variety of biomedical orthopaedic applications. It has comparable tensile and compressive strength to cortical bone with favourable biocompatibility. However, natural grade PEEK-OPTIMA has shown insufficient bioactivity and limited bone integration. Bioactive PEEK composites (e.g., PEEK/calc...

Manufacturing carbon-fibre reinforced polymer (CFRP) composites via different techniques often leads to contrasting surface topographies. Such differences can affect any subsequent pre-treatments that are performed and these ultimately joint strength. In the present work, CFRP adherends made using compression moulding or autoclaving were investigated. Pre-treatment of acetone cleaning, plasma t...

Two approaches for creating a new all-cellulose composite material have been studied: the biosynthesis of compartmentalised bacterial cellulose fibril aggregates and the compression moulding of commercial chemical wood pulps processed with only water. The objective was to study the structural changes during processing and the complexity of relating the mechanical properties of the final biocomp...

Abstrcat High density polyethylene (HDPE) composite reinforced with 20wt% orange peels ash particles (OPAp) was prepared by compression moulding. Thermogravimetric analysis (DTA/TGA) (space) was conducted on the HDPE/orange peels ash particle composite to clarify the effect of OPAp on the thermal decomposition behavior of the resultant composite. The values of the activation energy for thermal ...

Polypropylene (PP) has been one of the most widely used polymers due to the versatility and cost benefits obtained with this material. In this work, composites of PP modified with nanostructured ZSM-5 zeolite were prepared and their thermal and mechanical properties were evaluated. Zeolites were synthetized by hydrothermal method and the crystallization time was modified to evaluate the effect ...

In the fast-developing world, concern for environmental pollution and prevention of non- renewable non-biodegradable resources has attracted researchers seeking to develop new eco- friendly materials products based on sustainability principles. The fiber from natural sources provide indisputable advantages over synthetic reinforcement such as low cost, density, non-toxicity, comparable strength...

Abstract The aim of this research is to measure the dielectric properties and electromagnetic interference (EMI) shielding effectiveness (SE) silicone rubber reinforced with graphene nanoplates. In a two-roll mill, different amounts are mixed together. This followed by compression moulding at 170°C post-curing for 4 h 200°C. Between 1 MHz GHz, waveguide transmission line method vector network a...

Injection moulding simulation benchmarking is the comparison of predicted and actual process and quality parameters. Best practice requires that the inputs and outputs from an injection moulding simulation agree to the actual conditions of a real life moulding machine, as closely as possible. The accuracy of injection moulding simulation is influenced by many factors such as: the modelling of t...