1、A review of the curing rate and mechanical properties of epoxy resin on

Abstract The curing rate of epoxy resins is a critical parameter that significantly influences the curing properties of polymer matrix composites (PMCs). It plays a vital role in meeting high-performance requirements, particularly in achieving rapid development of high modulus.

2、The epoxy resin system: function and role of curing agents

Curing agents are critical components of aqueous epoxy resin systems. Unfortunately, its uses and applications are restricted because of its low emulsifying yields. Epoxy resins are...

3、A review of the curing rate and mechanical properties of

The effects of curing methods, curing agents, accelerators, functional fillers and composite curing processes on the curing rate and mechanical properties are also reviewed.

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.

Influence of different composite curing agents on the rapid curing

In particular, effective formulations are designed for mixing fast and slow curing agents, studying their effects on the curing behavior, curing quality, and mechanical properties of epoxy resins and elucidating their influence mechanisms.

Cold

The curing reaction of a commercial cold-curing structural epoxy resin, specifically formulated for civil engineering applications, was analyzed by thermal analysis as a function of the curing time and the sample thickness.

Abadgaran

During the curing process, the resin transitions from a viscous liquid to a rigid glassy solid. This transformation is one of the most tangible changes in the resin. The graph above shows the viscosity changes of epoxy resin during curing at different curing conditions and temperatures.

A review of the curing rate and mechanical properties of epoxy resin on

The paper reviews the current state of research on the curing of epoxy resins in PMCs, including theoretical studies on the curing kinetics of the curing rate. The efects of curing methods, curing agents, accelerators, functional fillers and composite curing processes on the curing rate and mechanical properties are also reviewed.

All About Epoxy Resin: Pro&Cons, Curing Agents

Explore epoxy resin including its definition, pros and cons, curing agents suited for use.

Curing reactions of epoxy powder coatings in perspectives of

The properties of the cured products of epoxy powder coatings are dominated by the curing systems. This review discusses the types, reaction principles, characteristics of curing agents and accelerators that participate in the curing reaction with different epoxy resins.

Epoxy resin curing agents are essential chemical reagents used to facilitate the curing reactions of epoxy resin matrix materials. In modern industrial and construction fields, epoxy resins are widely employed in coatings, adhesives, sealing materials, and composites due to their excellent physical properties and chemical stability. Curing agents are critical to ensuring these materials achieve optimal performance. evaluating and selecting the appropriate epoxy resin curing agent is particularly important.

I. The Role of Epoxy Resin Curing Agents

Curing agents primarily provide the necessary chemical or physical stimulation during the curing process of epoxy resins, enabling smooth cross-linking reactions between resin molecules to form hard, durable materials. This curing process often involves volume shrinkage, so curing agents must have adequate adaptability to accommodate such changes, ensuring the final product’s dimensional accuracy and structural integrity.

II. Types of Curing Agents

1. Acid Anhydride Curing Agents: These are widely used due to their high reactivity, which accelerates the curing of epoxy resins. They typically offer good thermal and chemical stability but may produce irritating odors, requiring adequate ventilation during use.

2. Amine Curing Agents: Amine curing agents, including aliphatic and aromatic types, are known for their fast curing speed and high hardness in the final product. they are relatively costly and may release toxic gases, necessitating safety precautions during application.

3. Imidazole Curing Agents: Imidazole curing agents are less toxic and environmentally adaptable, making them suitable for applications requiring low-toxicity materials. They offer moderate curing speeds and lower costs, balancing performance and economy.

III. Criteria for Selecting Curing Agents

1. Performance Requirements: Choose curing agents based on specific application needs. For example, imidazole curing agents may be preferred for high-performance electronic encapsulation, while cost-sensitive projects might opt for cheaper amine curing agents.

2. Environmental Factors: Prioritize low-toxicity or non-toxic curing agents with low volatile organic compound (VOC) emissions to meet environmental standards.

3. Economic Considerations: Evaluate the cost-effectiveness of curing agents, aligning selections with project budgets.

IV. Advantages and Disadvantages of Epoxy Resin Curing Agents

1. Advantages:

   • Fast curing speed, improving production efficiency.
   • High hardness and wear resistance in cured materials.
   • Versatility in adjusting formulations for diverse applications.
   • Environmental adaptability, especially for imidazole-based options.

2. Disadvantages:

   • Some curing agents emit irritating odors or toxic gases, requiring enhanced ventilation.
   • Higher costs, particularly for specialized or high-performance applications.
   • Certain curing agents have higher VOC content, posing environmental and health risks.

The selection of epoxy resin curing agents should balance application requirements, environmental conditions, and economic constraints. It is crucial to understand the characteristics of different curing agents, weighing their pros and cons to ensure optimal performance, environmental compliance, and safety. With advancements in technology and growing environmental awareness, future curing agents will likely prioritize eco-friendliness and cost-efficiency, expanding the potential applications of epoxy resins.