Composite Dielectric Structures with Enhanced Lifetimes
Lead Research Organisation:
University College London
Department Name: Chemistry
Abstract
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People |
ORCID iD |
| Kwang-Leong Choy (Principal Investigator) |
Publications
Brabazon, D
(2018)
Commercialization of Nanotechnologies-A Case Study Approach
Chen S
(2021)
The importance of particle dispersion in electrical treeing and breakdown in nano-filled epoxy resin
in International Journal of Electrical Power & Energy Systems
Lv Z
(2017)
Evolution of partial discharges during early tree propagation in epoxy resin
in IEEE Transactions on Dielectrics and Electrical Insulation
Sun K
(2019)
Negative permittivity derived from inductive characteristic in the percolating Cu/EP metacomposites
in Journal of Materials Science & Technology
| Description | The growth of electrical trees is a mechanism of long-term failure in polymer insulation systems. The objective of this project is to develop quantified descriptions of how a dielectric's micro-structure impacts tree growth. For the first time it is expected that the interaction between micro-filler/nano-filler and an electrical tree can be established. Optimum chemical precursor system and processing conditions have successfully been formulated and developed for the deposition of nano-BN filled layered epoxy systems using a controlled fabrication technology based on the novel, cost-effective and non-vacuum Aerosol Assisted Ion Deposition (AAID) method at UCL. The reproducibility of such deposition has been demonstrated. These BN/epoxy nanocomposite films were well characterised using a combination of SEM, FTIR and Raman spectroscopy to study the dispersion of nano-sized fillers within the epoxy matrix, surface morphology, structure and filler-polymer matrix interface. Further in-depth characterisation is in progress. Nanocomposite films with different wt% (e.g. 5 and 10 wt%) of BN nano-filler have also been fabricated using AAID method and supplied to the Manchester's team (led by Prof Rowland in order to establish the mechanism of long-term failure in polymer high voltage insulation systems. From the characterisation of tree growth study at Manchester, structures with ~50 µm think layers of nano-composites exhibited tree-retardant properties and significant improvements in performance of preventing high voltage breakdown, where electrical tree branches moving along the surfaces rather than through the structures. Further samples with composite films with varying in the size, concentration of nano- and micro fillers and their dispersion, thickness of the layers will be fabricated and characterised at UCL so that these materials properties and filler-matrix interface, dielectric structure, tree morphology and life expectance could be systematically studied and correlated in collaboration with Manchester in order to establish the mechanism of tree growth. This will provide vital information towards the design and development of a framework for improved dielectric material design, by modification of electrode/polymer interface and by development of layered dielectric structures. In addition, in-situ formation of nanocomposites would also be explored. We will develop with the power industry a route for future development of process and products for the power networks, mass transit and power electronics industries to exploit the findings of our project. |
| Exploitation Route | We will work closely with our industrial collaborators and technology experts from the power industry to develop a road map for potential exploitation of structured dielectrics as well as the future development of process and products for the power networks, mass transit and power electronics industries to exploit the findings of our project. The micro- and nano-composite films and the well-controlled fabrication of composite thin film technology developed in this project can also be adapted and exploited as multifunctional materials for aerospace, automotive, energy and biomedical applications. |
| Sectors | Aerospace, Defence and Marine,Electronics,Energy,Healthcare,Manufacturing, including Industrial Biotechology,Transport |
| Description | The deposition technology for nanocomposite materials has been adapted and exploited for use in the fabrication of bio-nanocomposite materials for healthcare and biomedical applications as well as anti-icing coatings for safe artic shipping, and most recently for next generation electrochemical system for sustainable direct CO2 capture and utilization/storage as clean solar fuel. |
| First Year Of Impact | 2021 |
| Sector | Aerospace, Defence and Marine,Chemicals,Energy,Environment,Healthcare,Manufacturing, including Industrial Biotechology,Pharmaceuticals and Medical Biotechnology |
| Impact Types | Societal,Economic,Policy & public services |
| Description | ENDURANCE |
| Amount | £187,508 (GBP) |
| Organisation | Innovate UK |
| Sector | Public |
| Country | United Kingdom |
| Start | 03/2016 |
| End | 02/2017 |
| Description | ERANET ACT 3: Accelerating CCUS Technologies |
| Amount | € 2,800,000 (EUR) |
| Funding ID | 5975830 |
| Organisation | Department for Business, Energy & Industrial Strategy |
| Sector | Public |
| Country | United Kingdom |
| Start | 10/2021 |
| End | 09/2024 |
| Description | H2020 Sedna |
| Amount | € 6,500,000 (EUR) |
| Funding ID | 723526 |
| Organisation | European Commission |
| Sector | Public |
| Country | European Union (EU) |
| Start | 05/2017 |
| End | 04/2020 |
| Description | HIGH-PROSPECTS |
| Amount | £1,245,338 (GBP) |
| Funding ID | 102470 |
| Organisation | Innovate UK |
| Sector | Public |
| Country | United Kingdom |
| Start | 11/2016 |
| End | 10/2018 |
| Description | High-ACCuracy printed electronics down to µm size, for Organic Large Area Electronics (OLAE) Thin Film Transistor (TFT) and Display Applications. |
| Amount | € 5,931,888 (EUR) |
| Funding ID | 862410 |
| Organisation | European Commission H2020 |
| Sector | Public |
| Country | Belgium |
| Start | 04/2020 |
| End | 10/2023 |
| Description | Marketplace |
| Amount | € 8,147,525 (EUR) |
| Funding ID | 760173 |
| Organisation | European Commission H2020 |
| Sector | Public |
| Country | Belgium |
| Start | 01/2018 |
| End | 12/2022 |
| Description | Multifunctional coatings |
| Amount | £106,000 (GBP) |
| Organisation | Defence Science & Technology Laboratory (DSTL) |
| Sector | Public |
| Country | United Kingdom |
| Start | 10/2018 |
| End | 09/2021 |
| Title | A novel deposition method applicable for biomedical applications. |
| Description | A novel method and tooling for depositing functional layers for dialysers for the effective removal of toxin including protein bound toxin. |
| Type Of Material | Improvements to research infrastructure |
| Year Produced | 2018 |
| Provided To Others? | No |
| Impact | An innovative and cost-effective method for the removal of protein bound toxin during dialysis. |
| Title | Collections of dielectric samples/specimens that have been created as part of your work. |
| Description | A collection of samples for the dielectric breakdown measurements and can be used for benchmarking. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2018 |
| Provided To Others? | No |
| Impact | The samples can be supplied for round robin testings to verify the dielectric breakdown results and for future benchmarking. |
| Description | Nanocomposite coatings for aviation applications. |
| Organisation | CAV Aerospace |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | Materials discovery and innovative and cost-effective manufacturing of high performance nanocomposite coatings by UCL. |
| Collaborator Contribution | Exploitation of nanocomposite coatings by CAV Aerospace for aviation applications. |
| Impact | Multidisciplinary collaboration which has led to a joint grant application to develop a prototype demonstrator. |
| Start Year | 2016 |
| Description | Nanocomposite coatings for engineering applications |
| Organisation | Cytec Industries |
| Department | R&D |
| Country | United States |
| Sector | Private |
| PI Contribution | The development of robust and cost-effective multifunctional nanocomposite coatings for automotive applications. |
| Collaborator Contribution | *Formulated coating precursor *Established the window of processing conditions for multifunctional coatings *Successfully fabricated and tested the robust multifunctional nanocomposite coatings which fulflling the requirements of industrial partners |
| Impact | The has led to H2020 project submission in 2019 for the industrial scale up and pilot project. |
| Start Year | 2018 |
| Description | Nanocomposite coatings for functional applications |
| Organisation | Centre for Process Innovation (CPI) |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | The materials formulation and processing of nanocomposite films for functional applications. |
| Collaborator Contribution | Scale up processing using the formulation developed by the UCL team. |
| Impact | Agreement to enter into joint grant application to Innovate UK. |
| Start Year | 2018 |
| Description | Thin films and Nanocomposites for structural and functional applications. |
| Organisation | William Blythe Ltd |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | Materials formulation, functionalisation and applications with end-users. |
| Collaborator Contribution | Materials supplier within the value chain. |
| Impact | Multidisciplinary collaboration. |
| Start Year | 2018 |
| Title | DEPOSITION OF POLYMERIC FILMS |
| Description | An apparatus for and method of depositing a polymeric film on a substrate (5) , the apparatus comprising: a delivery unit (7, 8) for delivering an aerosol spray comprising aerosol droplets of a liquid precursor comprising a polymeric phase to the substrate, the polymeric phase comprising a polymeric material and at least one solvent; a heating unit (15) for at least heating an environment such as at least partially to evaporate the at least one solvent of the polymeric phase prior to the aerosol droplets depositing on the substrate; and an electrostatic field generation unit (9) for generating an electrostatic field between the delivery unit and the substrate, and electrostatically charging the aerosol droplets such that the aerosol droplets are electrostatically attracted to the substrate. |
| IP Reference | WO2006085114 |
| Protection | Patent application published |
| Year Protection Granted | 2006 |
| Licensed | Commercial In Confidence |
| Impact | The development of superthin/thin polymeric thin films and coating technology has created a platform technology which is now being exploited for a variety of applications in transport, clean energy, healthcare and biomedical applications. |
| Title | In-situ formation of nanocmposites |
| Description | A novel and cost-effective in-situ processing of dielectric nanocomposites with well controlled structure and composition, as well as minimising the agglomeration of nanoparticles in composites. |
| IP Reference | |
| Protection | Protection not required |
| Year Protection Granted | 2017 |
| Licensed | Commercial In Confidence |
| Impact | Simplfying the processing of nanocomposites. The fabricated method is not only applicable for dielectric application but also for other structural, functional and biomedical applications. |
| Title | Medical device -dialyser |
| Description | Received Therapeutic Acceleration Support (TAS) Fund of £74840 to perform a proof of concept of novel and high performance coated haemodialysis dialysers designed to adsorb uraemic toxins. |
| Type | Therapeutic Intervention - Medical Devices |
| Current Stage Of Development | Initial development |
| Year Development Stage Completed | 2019 |
| Development Status | Under active development/distribution |
| Impact | The novel coated dialyser has generated interests from 3 international dialyser manufacturers that wish to collaborate with us and evaluate our coated dialysers. |
| Description | 2020 The 10th International Conference on Key Engineering Materials |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | The purpose of The 10th International Conference on Key Engineering Materials (ICKEM 2020) is to bring together researchers, engineers and practitioners interested in the whole range of fields related to the materials that underpin modern technologies |
| Year(s) Of Engagement Activity | 2020 |
| URL | https://www.buildup.eu/en/events/10th-international-conference-key-engineering-materials-ickem-2020 |
| Description | 2nd International Conference and Expo on Ceramics and Composite Materials Berlin, Germany July 25-26, 2016 |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | The keynote paper was well received which has led to wider collaborations and join grant applications. |
| Year(s) Of Engagement Activity | 2016 |
| Description | 5th International Conf. on Advanced Manufacturing and Materials (ICAMM) 2021, Macau, China, Nov. 2021 |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | ICAMM 2021 focuses on the advanced manufacturing and materials research. The applications of advanced manufacturing and materials to such domains as Multi-scale and/or Multi-disciplinary Approaches, |
| Year(s) Of Engagement Activity | 2021 |
| URL | http://www.wikicfp.com/cfp/servlet/event.showcfp?eventid=127270©ownerid=13881 |
| Description | Innovation in materials design and processes for delivering high performance nanostructured films and nanocomposite coatings, International Conference on Nanomaterials and Biomaterials (ICNB 2017) 11-13 December 2017 in Amsterdam |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | The study of all materials requires a multi-tool approach to analysing and characterising the material as well as its interactions and function. It is by using these orthogonal approaches that the best discoveries are made and data turns into knowledge for the benefit of the science. ICNB 2017 would bring together researchers from academia and industry with practitioners in materials characterisation, including instrument manufacturers and developers, to open dialogues about new approaches and technological innovation in the field of Nanomaterials and Biomaterials. |
| Year(s) Of Engagement Activity | 2017 |
| URL | http://www.icnb.org/ |
| Description | Invited talk on "High Performance Nanostructured Coatings and their Applications" at XXVII Materials Research Congress, Cancun, Mexico, August 2018 |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | A core mission of the Materials Research Society is to promote leading-edge research on materials around the world. The Materials Research Society (MRS) and the Sociedad Mexicana de Materiales (SMM) worked together on this global effort by growing the International Materials Research Congress (IMRC) held annually in Cancun, Mexico. The IMRC offered a range of symposium topics of interest to the materials research community at large. It has become a popular conference destination with about 1,700 attendees from nearly 60 countries in 2018. |
| Year(s) Of Engagement Activity | 2018 |
| URL | http://www.mrs-mexico.org.mx/imrc2018/ |
| Description | Keynote paper at 21st International Conference on Advances in Materials & Processing Technologies, Dublin, Ireland, 4th -7th September 2018 |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | The AMPT conference series provides a forum for academics, researchers, and practicing engineers to meet and exchange innovative ideas and information on all aspects of material processing technologies |
| Year(s) Of Engagement Activity | 2018 |
| URL | http://ampt2018.org/ |
| Description | Materials Hub Launch Event |
| Form Of Engagement Activity | Participation in an open day or visit at my research institution |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | The event has led to wider engagements with academic and industry sectors, resulted in new successful joint grant applications to Innovate UK and European Commission. |
| Year(s) Of Engagement Activity | 2016 |
| Description | The 7th Annual World Congress of Nano Science & Technology-2017 |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | The 7th Annual World Congress of Nano Science and Technology-2017 (Nano S&T-2017) was held in Japan during October 24-26, 2017. It covers all frontier topics in advanced nanomaterials, nanoelectronics, applications of nanotechnology, nanomedicine and biomaterials, etc. The aim of the conference was to bring together leading scientists, researchers, engineers, practitioners, technology developers and policy makers from multidisciplinary research and application areas to exchange information on their latest research progress and innovation, to discuss the benefits of Nanotechnology and materials science in their research and development efforts to advance the networking, and collaborating between different academia, research and market leaders in the field. Participants from the top international academic, government and private industry labs of different disciplines participated in Nano S&t-2017 to identify new technology trends, development tools, R&D collaborations, and commercialization partners. It provided an unprecedented opportunity and effective platform for institutions and industries to share ideas and discover innovation in the area of nanotechnology and develop new business opportunities. 400+ Oral Presentations Covering the Hot Topics and Cutting-Edge Technology in the Field of Nanoscience and Nanotechnology and 50+ Posters Demonstrating. There were expressions of interests in the work of Professor Choy's group in using nanocomposite coating for high voltage dielectric breakdown as well as wider structural and functional applications. |
| Year(s) Of Engagement Activity | 2017 |
| URL | http://www.bitcongress.com/nano2017/RenownedSpeakers.asp |