A5018076434- Epoxy Resin Curing Processes
- Mechanical Behavior of Composites
- Recycling and Waste Management Techniques
- Injection Molding Process and Properties
- Polymer crystallization and properties
- Extraction and Separation Processes
- Polymer Foaming and Composites
- Textile materials and evaluations
- biodegradable polymer synthesis and properties
- Polymer Science and PVC
- Synthesis and properties of polymers
- Advanced Sensor and Energy Harvesting Materials
- Fiber-reinforced polymer composites
- Microplastics and Plastic Pollution
- Seedling growth and survival studies
- Growth and nutrition in plants
- NMR spectroscopy and applications
- Environmental Impact and Sustainability
- Structural Analysis of Composite Materials
- Municipal Solid Waste Management
- Composite Material Mechanics
- Natural Fiber Reinforced Composites
- Advanced MRI Techniques and Applications
- Dielectric materials and actuators
- Forest ecology and management
Swansea University
2009-2021
Growth in waste electrical and electronic equipment (WEEE) is posing increasing problems of management, partly resulting from its plastic content. WEEE plastics include a range polymers, some which can be sorted extracted for recycling. However nonrecyclable fraction remains containing mixture polymers contaminated with other materials, pyrolysis potential means recovering the energy content this. In preparation life cycle assessment this option, described part 2 paper set, data were...
Waste electrical and electronic equipment (WEEE) contains up to 25% plastics. Extraction of higher quality fractions for recycling leaves a mix plastic types contaminated with other materials, requiring the least environmentally harmful disposal route. Data from trials pyrolysis, described in part 1 this paper set, were used life cycle assessment treatment WEEE Various levels sorted fraction considered, pyrolysis was compared incineration (with energy recovery) landfill remainder. Increased...
The objective of this work is to study the thermal degradation kinetic parameters polypropylene (PP) and compare them those a polypropylene/starch blend (PP/S) (70/30 (wt %)), taking into account effect photodegradation caused by natural weathering. Samples were taken from tree shelters exposed four years weathering compared unexposed material stored under laboratory conditions. Nonisothermal (dynamic) thermogravimetery was used with five different heating rates (β): 5, 10, 15, 20, 25 °C...
Water diffusion into composites in different directions was examined this study with the aim of determining best way measuring coefficients and to provide values compare model predictions. absorption behavior unreinforced epoxy resins carbon fiber reinforced composite materials investigated long‐term exposure environmental conditions. Initial Fickian observed followed by a slower second stage that continues for at least 3.7 years. Fiber architecture found be an important aspect controlling...
The long‐term water absorption behavior of UD and ±45 carbon fiber/977‐2 epoxy composite unreinforced 977‐2 resin has been studied at different environments with various temperatures relative humidities. Fickian was noticed initially followed by a slight continuing increase in saturation time, that continues for least 4 years. diffusion coefficients all materials were derived using graphical method. Initial equilibrium moisture contents found not to be dependent on temperature but the...
Defects in polymer composites associated with in‐service damage induced by impact and those produced environmental degradation due moisture absorption can have a significant influence on the mechanical properties failure modes of structures. This study evaluates flexural characteristics ±45° carbon/epoxy laminates under different conditions. The strength stiffness these were inspected before after subjecting to water absorption, drying, re‐drying low energy impact. It was observed that both...
Abstract The moisture absorption behavior of a composite comprising phenolic resin and activated carbon fibers was characterized. starts with water content from curing the active both adsorb on their surface absorb in sub‐surface pores, acting as sink or source water. Measured data showed that dependence this uptake surrounding relative humidity highly nonlinear, effective diffusion rate through very dependent starting end conditions. A physically based model has been successfully developed...
Adhesively bonded scarf repairs are the preferred method of repairing modern composite structures as they provide high strength restoration and aerodynamic flushness.Curing adhesive bondline is carried out by locally heating repair area.To assess design practices simulation can be used to model both transient heat transfer during curing level cure likely achieved at different regions in joint.In this paper a 3D described simulate through component.The kinetics commercial epoxy resin have...
Abstract Nuclear Magnetic Resonance (NMR) has been shown to be a useful technique study the form and content of water in polymer composites. Composites using activated carbon fibres with phenolic resin have complex absorption behaviour which would benefit from such investigation; however, presence conductive can make NMR problematic. In this study, single-sided successfully used on material by developing method for sample-to-sample compensation effect conductivity. Transverse relaxation...