1、A critical review of dynamic bonds containing curing agents for epoxy

Investigated the mechanical, thermomechanical, thermal, and recycling properties of the epoxy thermosets cured by developed curing agents. Addressed the challenges, opportunities and emerging trends in the field.

2、Epoxy Curing Agents Ancamine® 2337M – a Latent Curing Agent Designed

There is an increasing demand for curing agents that allow curing at temperatures within the 70-80°C range. At the same time one-component systems are expected to demonstrate long shelf-life stability at ambient temperatures prior to use.

3、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.

4、Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a

We have demonstrated that ammonium salts can be used as curing agents to produce a new class of ionic epoxy thermosets. This curing approach, based on the direct reactivity of quaternized amines with oxirane groups, opens a previously unexplored direction in epoxy chemistry.

Ancamine® 2337M

Ancamine® 2337M is an amine-based curing agent tailored for low-temperature curing applications, like electronics that remain stable under ambient conditions, ensuring extended shelf life and ease of handling.

Preparation and properties of stretchable low temperature resistant

Two innovative molecular design strategies for epoxy curing agents to address the inherent brittleness and cryogenic limitations of conventional epoxy systems are introduced.

Non

Compared with other curing methods, room temperature curing (curing temperature 15–40 C) has the advantages of low shrinkage caused by the thermal expansion difference, low internal stress, low energy consumption, and low toxicity.

Nonconventional phosphorus

Herein, a new phosphorus-containing tertiary amine, designated as DPDA, is developed as a curing agent for the preparation of desirable epoxy thermosets. The resultant EP-DPDA can self-extinguish quickly during tests, affording a V-0 rating as well as the LOI value of 29.2 %.

Non Toxic Epoxy Curing Ancamine 2337M

Ancamine® 2337M is a high-performance, non-toxic epoxy curing agent designed for low-temperature applications. It ensures extended shelf life, rapid curing at 70℃, and seamless integration into adhesive formulations, making it ideal for electronics and structural bonding.

HARDENER FOR ULTRA

The new high-solid curing agent (“Ancamine 2844”) for multi-component spray applica-tions provides an ultra-fast curing property with very good hardness development at ambient temperature and 5 °C with excel-lent carbamation resistance, as well as corro-sion resistance of up to 3000 h in salt spray (Table 1).

Epoxy curing agents play a critical role in modern industrial and construction fields. They not only determine the final performance of materials but also impact the convenience and safety of application, necessitating stringent criteria for their selection and use. This article explores the characteristics, advantages, and practical significance of ambient-temperature, non-toxic epoxy curing agents.

I. Definition and Composition

An epoxy curing agent is a substance that promotes the curing of epoxy resins by facilitating the formation of stable chemical bonds between epoxy molecules, thereby imparting desired physical and chemical properties. These agents typically exist in liquid or powder form, with primary components including amines, acid anhydrides, and imidazoles. Although their mechanisms vary, their shared goal is to accelerate the curing process through chemical reactions.

II. Advantages of Ambient-Temperature Curing

Compared to traditional high-temperature curing methods, ambient-temperature curing offers distinct benefits:

1. Environmental Friendliness: Eliminates the need for energy-intensive heating equipment, reducing energy consumption and carbon emissions, aligning with sustainable development goals.
2. Simplified Construction: No special low-temperature conditions are required, making the process adaptable to various climates and streamlining workflows.
3. Low Safety Risks: Avoids fire, explosion, and other hazards associated with high-temperature operations, enhancing on-site safety.
4. Broad Material Compatibility: Effective with both thermosetting and thermoplastic epoxy resins, expanding material applicability.
5. Shortened Timelines: Accelerates project progress by enabling rapid construction and reducing engineering cycles.

III. Application Areas

Ambient-cured epoxy resins, due to their superior performance, are widely used across industries:

1. Construction: Concrete repair, waterproofing layers, and floor coatings.
2. Automotive Manufacturing: Parts bonding, sealing, and coating.
3. Electronics: Circuit board adhesion and encapsulation.
4. Aerospace: Aircraft component bonding and structural reinforcement.
5. Furniture Making: Wood finishing and restoration.
6. Medical Devices: Dental implants and surgical instrument bonding.
7. Sports Facilities: Track and court surface installation and maintenance.

IV. Selection Criteria

When choosing ambient-cured epoxy resins, consider:

1. Curing Speed: Match the curing time to application requirements.
2. Mechanical Properties: Assess strength, hardness, and wear resistance post-curing.
3. Heat Resistance: Ensure stability within expected temperature ranges.
4. Chemical Resistance: Evaluate durability against chemicals for long-term reliability.
5. Cost-Effectiveness: Balance material costs with performance benefits.

V. Future Prospects

Advancements in technology and environmental awareness are driving growth in ambient-cured epoxy research and applications. Key future directions include:

1. Developing next-generation curing agents with faster curing speeds and lower costs.
2. Improving compatibility across diverse epoxy types to expand applications.
3. Integrating ambient curing with non-contact heating technologies (e.g., microwave, infrared) for efficiency gains.
4. Prioritizing biocompatibility and environmental safety to meet stricter health standards.
5. Advancing automated, intelligent construction techniques to enhance productivity and quality.

ambient-temperature, non-toxic epoxy curing agents are gaining prominence in modern industries and construction due to their eco-friendly and user-friendly attributes. With ongoing technological innovation, these agents are poised to contribute even more significantly to societal progress.