Imidazole-based accelerators for low-temperature curing of epoxy powder coatings
Innovative imidazole-based accelerators reduce curing temperatures of DICY/epoxy powder coatings by 20-40°C, maintaining mechanical and thermal properties. Ideal for heat-sensitive substrates like wood and plastics, enhancing compatibility and performance.
Overview
This innovative solution introduces imidazole-based curing accelerators designed to significantly reduce the curing temperature of DICY/epoxy powder coatings by 20-40°C. This advancement maintains the final coating's mechanical strength, thermal stability, and chemical resistance while expanding the applicability of these coatings to heat-sensitive substrates such as wood and plastics. The incorporation of these accelerators optimizes performance in diverse environmental conditions, ensuring compatibility and long-term stability.
Technical specifications
Key features:
- Reduced curing temperature: Lowers curing temperature by 20-40°C compared to standard DICY/epoxy systems.
- Maintained properties: Ensures mechanical strength, thermal stability, and chemical resistance are not compromised.
- Wide applicability: Suitable for heat-sensitive substrates like wood and plastics.
- Enhanced reaction kinetics: Imidazole derivatives facilitate nucleophilic attack on epoxy rings, reducing activation energy.
- Thermodynamic efficiency: Utilizes hydrogen bonding and electron-pair donation for improved reactivity.
Validation procedures:
- Differential scanning calorimetry (DSC) and rheological analysis to evaluate curing kinetics.
- Testing various concentrations (0.5-5 wt%) of imidazole accelerators for optimal performance.
Technology readiness level
This technology is currently at TRL 5, indicating that the core functionality has been validated in a relevant environment. Ongoing efforts focus on optimizing formulations and validating performance across different substrate materials.
About University of Southern Queensland
UniSQ is a comprehensive public research university of more than 20,000 students, with a practical, regionally engaged character across campuses in Toowoomba, Springfield and Ipswich and a large online cohort. Its southern Queensland footprint places researchers close to regional employers, government and community organisations, while purpose-built laboratories and field facilities support applied collaboration. Industry can engage through co-designed research, internships, industry-funded higher degrees, the National Industry PhD Program, Cooperative Research Centres and regional innovation hubs. Research is supported by the Australian Research Council, the National Health and Medical Research Council and competitive Australian Government funding, with a dedicated Research Partnerships function helping scope collaborations and funding pathways.
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