1、Novel Thermal Latent Curing Agents for Epoxy Resins Based on Dual
Herein, we present a dual-locked thermal latent curing agent based on aminopyridines, protected by amidation and N -oxidation, designed to enhance both pot life and final curing efficiency.
2、Journal of Applied Polymer Science
Developing effective latent curing agent for rapid curing of epoxy resins at low temperatures remains challenging. This study reports a latent curing agent, ortho-cresol phenolic epoxy resin-bisphenol A (EOCN-BPA), prepared through the addition reaction of o-methyl phenolic epoxy resin with BPA.
3、Curing reactions of epoxy powder coatings in perspectives of chemical
• Chemical mechanisms and curing conditions for epoxy powder coatings are discussed. • Accelerators matched curing agents for epoxy powder coatings are classified.
4、Preparation of Latent Curing Agent for Epoxy Resin by Encapsulation
The microcapsule-type curing agents DDM-PMMA and IZ-PU were prepared by solvent evaporation method and interfacial polymerization method, respectively. The surface morphology of the two microcapsules was characterized by SEM.
5、Research Progress of Latent Curing Agent for Epoxy Resin
Meanwhile, the current evaluation methods of latent performance of curing agent are summarized, including DSC and rheological behavior analysis. Finally, the advantages and disadvantages of the current latent curing agents are evaluated, and the trends of future work are highlighted.
Thermally
Latent curing agents are not active at room temperature, but they will react with epoxy resin by the application of an external force like heat or light. Thermally-latent curing agents are well-known and they are widely used.
Novel Thermal Latent Curing Agents for Epoxy Resins Based on Dual
Novel Thermal Latent Curing Agents for Epoxy Resins Based on Dual-Locked Aminopyridines by Amidation and N-Oxidation | Articles | Nature Index
Thermal curing of epoxy resins at lower temperature using 4
Abstract To expand the application fields of epoxy resins, there has been a growing demand for thermal latent curing agents that combine a lower curing temperature with a long storage lifetime for ...
Imidazole
In this study, polymeric thermal latent curing agents (TLCs) with covalently bound imidazole and long alkyl urea functionalities were synthesized via post-polymerization modification of poly (2-ethyl-2-oxazoline) (PEOZ).
LATENT CURING AGENTS AND ACCELERATORS FOR EPOXY RESIN AJICURE
Ajicure PN-23J is the fastest curing agent of all Ajicures. However Ajicure PN-23J is so fine particle that its pot life formulated with epoxy resins is relatively short.
Epoxy resins, as a critical component of modern materials science, have gained widespread applications across multiple industries due to their exceptional physical and chemical properties. Among these, latent powder curing agents play an indispensable role in epoxy resin applications. Through chemical reactions, they enable rapid curing of materials, significantly enhancing the convenience of epoxy resin utilization. This article provides an in-depth exploration of the working principles, characteristics, and practical significance of latent powder curing agents for epoxy resins.
1. Working Principles of Latent Powder Curing Agents for Epoxy Resins
Latent powder curing agents are powdered chemicals containing initiators. When mixed with epoxy resins, the chemical components of the initiators decompose rapidly, releasing active free radicals. These radicals react with the epoxide groups in epoxy molecules, forming stable polymer chains that facilitate the curing process. This curing typically occurs at room temperature, eliminating the need for heating or additional catalysts.
2. Characteristics of Latent Powder Curing Agents
- Rapid Curing: These agents enable epoxy resins to cure within short timeframes, reducing construction cycles and improving production efficiency.
- Environmental Friendliness: The curing process releases no volatile organic compounds (VOCs), minimizing environmental and health impacts, aligning with green building material standards.
- Versatility: Beyond epoxy resins, latent powder curing agents can blend with other resin systems to enhance mechanical properties and weather resistance.
- Ease of Operation: Their preparation involves simply mixing initiators with epoxy resins in specific ratios, simplifying operational complexity.
3. Practical Significance of Latent Powder Curing Agents
- Productivity Improvement: Accelerated curing shortens processing times, boosts efficiency, and lowers costs.
- Quality Assurance: Rapid curing ensures structural performance meets design requirements faster, enhancing engineering safety.
- Adaptability to Diverse Needs: Versatility enables applications in construction, composites, and other fields.
- Technological Advancement: Research on these agents drives innovation in materials science and new material development.
As highly efficient curing agents, latent powder curing agents are pivotal to epoxy resin applications. By understanding their mechanisms, characteristics, and practical value, we can better leverage this technology to advance materials science and meet growing market demands. With ongoing technological progress and emerging materials, latent powder curing agents are poised to play a larger role in future building materials, contributing to societal development.
