1、Thermal curing of epoxy resins at lower temperature using 4
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 a one-component epoxy formulation.
2、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.
3、Liquid phosphorus
Herein, two liquid phosphorus-containing bis-imidazole compounds, PPDM and DPCMI, were synthesized as latent curing agents for EP, demonstrating multiple effects in improving latency, thermal stability, mechanical properties, and fire safety.
A latent curing agent for rapid curing of phenolic epoxy resin
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.
Epoxy Curing Agents – Latent Curing Agents for One Component Systems
Latent curing agents are clearly the choice for one component heat activated epoxy systems. Latency is achieved through either physical insolubility or lack of chemical reactivity at room temperature, and the reactivity, solubility, and latency all must be carefully balanced.
Facile synthesis of bio
Developing latent curing agents from bioresources are of great significance to the sustainable development of epoxy resins.
Imidazolium Phosphinate Ionic Liquids as Latent Curing Agents for Epoxy
This work establishes IMPILs as a novel class of liquid latent curing agents that satisfy both long-term storage requirements and excellent thermal-curing performance for advanced epoxy composites.
Bis‐Imidazole Derivative as Latent Curing Agent for One‐Component Epoxy
Abstract One-component epoxy resins (OCERs) are widely used for simplified processing, prolonged stability, and enhanced performance. This study synthesizes a novel bis-imidazole latent curing agen...
Latent Curing Agent of Epoxy Resin Based on Bio
V-fa was added into DCPD-ER in different proportions as a latent curing agent. At the same time, a usual curing agent, diaminodiphenylmethane (DDM), was also used as a comparative study....
Advanced Latent Curing Agents for Epoxy Resin Systems: Enhanced Control
Discover innovative latent curing agents for epoxy resins offering superior storage stability, precise curing control, and enhanced performance characteristics.
In modern industrial manufacturing, epoxy resins are widely used due to their excellent physical and chemical properties. the curing of epoxy resins is a complex chemical process involving many factors. The selection and application of curing agents are critical to ensuring the final performance of epoxy resins. Today, we will explore latent curing agents for epoxy resins and how they influence the performance and applications of epoxy resins.
What Are Latent Curing Agents?
Latent curing agents are chemical substances that do not exhibit curing reactions at room temperature but gradually initiate the curing process under specific conditions (such as heating or UV exposure). These agents typically have a long latent period, allowing for more flexible and controlled curing processes.
Characteristics and Applications of Latent Curing Agents
- Flexibility: Unlike catalysts that require immediate curing, latent curing agents allow users to initiate the curing process when needed, reducing waste caused by premature curing.
- Environmental Friendliness: Due to their slow reaction rates, latent curing agents minimize the emission of volatile organic compounds (VOCs), which is crucial for eco-friendly industrial applications.
- Precise Control: Latent curing agents enable users to precisely control curing times, which is especially important in applications requiring accurate timing (e.g., electronic encapsulation, precision medical devices).
- Temperature Sensitivity: Some latent curing agents are highly sensitive to temperature, allowing them to rapidly initiate curing within specific temperature ranges.
- Versatility: Latent curing agents are suitable for various epoxy resin systems, including thermosetting and photocurable epoxies, making them widely applicable across industries.
Practical Applications
Take epoxy composite materials as an example. Traditional epoxy curing agents require high temperatures to initiate curing. In contrast, latent curing agents offer a more flexible solution. In the aerospace industry, certain high-performance composites must operate under extreme temperatures and pressures. This demands curing agents that can quickly initiate curing under such conditions. By using latent curing agents, engineers can better control the curing process, enhancing the overall performance and reliability of composites.
Latent epoxy curing agents introduce new flexibility and possibilities for epoxy resin applications. By precisely controlling curing time and conditions, these agents enable epoxy resins to be used in diverse scenarios, from traditional electronic encapsulation to emerging aerospace fields. With ongoing advancements in materials science and processing technologies, latent epoxy curing agents are poised to play a vital role in industrial manufacturing, driving innovation and application of new materials.
