Enhanced pigment weathering resistance by coating with high dielectric ceramic. The partner company, Tiwest, based in Western Australia, is a major contributor to the economy, and earns more than $A400m annually in exports. It is the only company in the world that mines, separates, refines and manufactures titania products, including pigments, in one region. The current post-titania particle formation wet-coating process, however, presents a major capital and recurrent cost and necessitates a pi ....Enhanced pigment weathering resistance by coating with high dielectric ceramic. The partner company, Tiwest, based in Western Australia, is a major contributor to the economy, and earns more than $A400m annually in exports. It is the only company in the world that mines, separates, refines and manufactures titania products, including pigments, in one region. The current post-titania particle formation wet-coating process, however, presents a major capital and recurrent cost and necessitates a pigment regrind stage. The research will investigate the development of a highly durable dry-coated pigment utilising a novel high dielectric coating. This development has the potential to ensure the partner company's future competitiveness through reduced processing costs and improved product performance.Read moreRead less
Wet Particulate Materials - Flow or Fracture? Most advanced materials are produced from starting materials in the form of fine particles. Powders, especially in ceramic engineering, are first processed wet into near-final shape. Improved understanding of the fracture of particle networks is critical in order to process nano-sized advanced ceramic materials for use in solar energy harvesting and extreme heat engine applications as well as minimising drying cracks in paints and coatings. The resea ....Wet Particulate Materials - Flow or Fracture? Most advanced materials are produced from starting materials in the form of fine particles. Powders, especially in ceramic engineering, are first processed wet into near-final shape. Improved understanding of the fracture of particle networks is critical in order to process nano-sized advanced ceramic materials for use in solar energy harvesting and extreme heat engine applications as well as minimising drying cracks in paints and coatings. The research aims to identify the fundamental link between particle network strength and structure and the fracture of wet powder bodies. The microscopic mechanisms that control the behaviour will be investigated with a particular focus on toughening mechanisms including the influence of plasticity.Read moreRead less
Electronic and Optical Properties of Doped Titanium Dioxide. Titanium dioxide, is widely used as a white pigment, owing to its high refractive index, second, only after diamond. Yellowing of rutile pigment particles, observed on prolonged exposure to sunlight, is a serious problem that pigment manufacturers would like to overcome. It is proposed that aluminium-doping of rutile limits this discolouration by altering the electronic structure of the rutile particles. This project seeks to identify ....Electronic and Optical Properties of Doped Titanium Dioxide. Titanium dioxide, is widely used as a white pigment, owing to its high refractive index, second, only after diamond. Yellowing of rutile pigment particles, observed on prolonged exposure to sunlight, is a serious problem that pigment manufacturers would like to overcome. It is proposed that aluminium-doping of rutile limits this discolouration by altering the electronic structure of the rutile particles. This project seeks to identify the specific electronic cause of the yellowing process, the nature of the Al defect,it's effect on the electronic structure of rutile, and the electronic perturbations that may occur when other dopants are used.Read moreRead less
STABILISATION OF TITANIA PIGMENTS FOR IMPROVED WATER-BASED PAINT APPLICATIONS. This project aims to improve the stability and optical properties of titania pigments in water-based paints. Tailored dispersing agents will be used to stabilise pigments in paints in both the wet and dry state. Enhanced understanding of the dispersing agents interaction with the titania pigment surface and the subsequent stability of the pigment in dry paint films will allow advances in water-based paint stability. T ....STABILISATION OF TITANIA PIGMENTS FOR IMPROVED WATER-BASED PAINT APPLICATIONS. This project aims to improve the stability and optical properties of titania pigments in water-based paints. Tailored dispersing agents will be used to stabilise pigments in paints in both the wet and dry state. Enhanced understanding of the dispersing agents interaction with the titania pigment surface and the subsequent stability of the pigment in dry paint films will allow advances in water-based paint stability. This understanding facilitates continued movement away from solvent-based paints required by environmental and health legislation. The potential growth in market share for the Australian pigment industry is in excess of $50M pa.Read moreRead less
Janus particles and nanorattles: new materials for paint technology. This project will pave the way for self cleaning paints that achieve opacity with greatly reduced titanium dioxide levels. Painted surfaces will maintain their clean and new look for longer and a clean town look will be much more readily maintained. More efficient use of titanium dioxide will reduce the need for sand mining and reduce the cost of quality paint.
Polymer micro-capsules for stain-resistant paint. This project aims to create an advanced micro-capsule system to be used in the manufacturing of high-performance waterborne paints on a large scale. Surface coatings seal, strengthen, and decorate the majority of surfaces in the building industry. Despite their importance, advances in paint science have only been incremental and a truly stain-resistant, robust and environmentally friendly coating has yet to be developed. This project will use pol ....Polymer micro-capsules for stain-resistant paint. This project aims to create an advanced micro-capsule system to be used in the manufacturing of high-performance waterborne paints on a large scale. Surface coatings seal, strengthen, and decorate the majority of surfaces in the building industry. Despite their importance, advances in paint science have only been incremental and a truly stain-resistant, robust and environmentally friendly coating has yet to be developed. This project will use polymer Janus nanoparticles to radically redesign architectural coatings, with the goal to reduce the use of non-renewable components, and increase stain-resistance and durability. This new technology will lead to less disruption for the environment, and important economic and technological benefits for Australia.Read moreRead less
Key Functional Additives in Paint Technology. The goal of this project is to create two novel advanced particle systems with complex architecture that can be manufactured on a large scale, which aim to lead to high-performance waterborne paints. It is intended that these paints will have three functional characteristics: provide more efficient use of titanium dioxide; display pronounced water-resistance; and contribute to removing the need for organic solvents from the gloss paint sector. This r ....Key Functional Additives in Paint Technology. The goal of this project is to create two novel advanced particle systems with complex architecture that can be manufactured on a large scale, which aim to lead to high-performance waterborne paints. It is intended that these paints will have three functional characteristics: provide more efficient use of titanium dioxide; display pronounced water-resistance; and contribute to removing the need for organic solvents from the gloss paint sector. This research aims to provide the means to create paint films with greatly improved properties at reduced cost, with reduced requirement for non-renewable resources and reduced environmental footprint.Read moreRead less
Polymer nanoparticles with gradient morphology for environmentally friendly aqueous coatings applications. The commercial and practical importance of coatings (paints) in today’s society can hardly be overstated. With the ongoing drive towards more environmentally friendly coating systems, there is a strong desire to replace traditionally employed solvent-based coatings with entirely waterborne systems. Waterborne coatings are a key measure by which the coating industry can meet requirements to ....Polymer nanoparticles with gradient morphology for environmentally friendly aqueous coatings applications. The commercial and practical importance of coatings (paints) in today’s society can hardly be overstated. With the ongoing drive towards more environmentally friendly coating systems, there is a strong desire to replace traditionally employed solvent-based coatings with entirely waterborne systems. Waterborne coatings are a key measure by which the coating industry can meet requirements to reduce emission of volatile organic compounds. However, maximum performance cannot be achieved currently using waterborne coatings, which in turn limits applications. The overall aim of this project is to develop environmentally friendly high-performance waterborne coatings that will enable replacement of currently employed solvent-based systems.Read moreRead less
Polymer nanofibres for advanced paint formulations. Surface coatings seal, strengthen, and decorate the majority of surfaces in the building industry—a $72 billion market. Despite their importance, advances in paint science have only been incremental and a truly robust and water resistant paint coating has yet to be developed. Dulux Group Australia and the University of Sydney will use polymer nanofibres as additives to radically redesign architectural coatings, with the goal to drastically incr ....Polymer nanofibres for advanced paint formulations. Surface coatings seal, strengthen, and decorate the majority of surfaces in the building industry—a $72 billion market. Despite their importance, advances in paint science have only been incremental and a truly robust and water resistant paint coating has yet to be developed. Dulux Group Australia and the University of Sydney will use polymer nanofibres as additives to radically redesign architectural coatings, with the goal to drastically increase their durability. The partnership will bring a technological breakthrough that will lead to less disruption for the environment, and important economic and technological benefits for Australia.Read moreRead less
The effect of de-gassing on the dispersion and stability of emulsions and colloidal solutions. Although it is widely accepted that oil and water will not mix, the reverse has recently been found to occur (by the applicant) under the unusual conditions of complete de-gassing. This discovery has opened up new areas for investigation and for the development of new processes and products. Hydrocarbon oils and hydrophobic powders can now be readily dispersed in water without the use of additives. Ho ....The effect of de-gassing on the dispersion and stability of emulsions and colloidal solutions. Although it is widely accepted that oil and water will not mix, the reverse has recently been found to occur (by the applicant) under the unusual conditions of complete de-gassing. This discovery has opened up new areas for investigation and for the development of new processes and products. Hydrocarbon oils and hydrophobic powders can now be readily dispersed in water without the use of additives. However, the mechanisms involved have not yet been elucidated and it is the aim of this project to understand the process and develop potential commercial applications.Read moreRead less