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、Curing reactions of epoxy powder coatings in perspectives of chemical

Different from the previous reviews of powder coatings focusing on the formulation optimization and performance improvement, this review interprets curing reactions of epoxy powder coatings from the perspectives of chemical mechanism and selection strategy.

3、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.

4、The Effect of Different Diluents and Curing Agents on the Performance

A unified rule is that as the amount of diluent and curing agent increases, the flame retardancy improves while the mechanical properties decrease. This work provides data support for the preparation and process optimization of resin-based coatings.

Effect of Curing Agent Type on Curing Reaction Kinetics of Epoxy Resin

In this paper, low molecular weight polyamides, aromatic amines and anhydrides were selected as three kinds of curing agents and their isothermal viscosity-time properties were studied to...

Study on the Addition Amount of Nonyl Phenol Epoxy Curing Agent

This curing agent, renowned for its excellent chemical stability, adhesive properties, and mechanical strength, is extensively used in coatings, adhesives, composite materials, and other fields. precisely controlling the dosage of nonyl phenol epoxy curing agents to achieve optimal performance remains a focal point of attention in the industry.

Improved curing performances of epoxy resin by a structure

The curing kinetics of liquid epoxy resin (E-51) in the presence of curing agent was studied by differential scanning calorimetry (DSC), and the curing process of cured film was observed by light microscope.

Mechanical and chemical properties of matrix composite: Curing agent

In this study, the author aims to determine the effect of the ratio of epoxy and curing agent on the properties of the epoxy matrix material and the effect of the duration of the degassing process in producing epoxy to know its difference in its mechanical properties.

The effect of reactive diluents on curing of epoxy resins and

The main purpose of the present study was to evaluate the effect of reactive epoxy diluents of different functionality on curing of liquid epoxy resins and properties of the cured epoxy coatings.

Study curing of epoxy resin by Isophoronediamine/ Triethylenetetramine

Epoxy is a widely used thermosetting resin recognized for its exceptional performance in adhesives, coatings, and various other applications, attributed to its high tensile strength, stiffness, electrical performance, and chemical resistance.

In the application of epoxy resins, curing agents, as a critical component, directly influence the performance of the final product. This study aims to explore the impact of epoxy curing agent addition amounts on material properties and analyze the scientific principles and practical significance from multiple perspectives.

I. Basic Concept and Importance of Epoxy Curing Agents

Epoxy curing agents are substances that promote the curing reaction of epoxy resins. They provide essential chemical bonding during the curing process, ensuring the material exhibits required physical and chemical properties. The selection of curing agents directly affects key indicators such as adhesive strength, temperature resistance, corrosion resistance, and electrical properties of the epoxy resin.

II. Specific Impact of Addition Amount on Performance

1. Adhesive Strength: The amount of curing agent determines the interfacial bonding force between the resin matrix and reinforcing materials. An appropriate amount ensures sufficient chemical anchoring, firmly securing the reinforcement within the matrix. Excessive or insufficient curing agents can reduce bonding strength.

2. Temperature Resistance: Active groups in curing agents participate in the curing reaction, forming stable crosslinked structures that enhance thermal stability. excessive curing agents may increase crosslinking density, potentially lowering thermal stability.

3. Corrosion Resistance: Functional groups in curing agents react with the resin matrix or other chemicals to form protective layers, improving corrosion resistance. Optimal amounts ensure uniform protective layers, while excess may lead to uneven coatings and reduced performance.

4. Electrical Properties: Some curing agents introduce conductive networks during curing, increasing electrical conductivity. excessive amounts may disrupt these networks, degrading electrical properties.

III. Influencing Factors Analysis

1. Resin Type: Different epoxy resins require varying curing agent amounts. For example, aromatic epoxy resins typically need more curing agents for optimal performance.

2. Curing Conditions: Temperature, time, and environmental humidity affect the activation and distribution of curing agents, influencing final performance.

3. Reinforcement Material Types and Properties: Different reinforcements react with curing agents at varying rates, affecting the optimal addition amount.

IV. Practical Application Recommendations

1. Select curing agent types based on resin type and desired performance.
2. Strictly control curing conditions (temperature, time, and environment) to ensure optimal results.
3. Use multiple curing agents to achieve balanced performance when single agents fall short.
4. Conduct small-scale trials to determine the best addition amount and optimize for large-scale production.

The addition amount of epoxy curing agents significantly impacts material performance. Precision control of curing agent dosage maximizes the potential of epoxy resins while maintaining desirable properties. Understanding curing agent characteristics and optimizing their application is critical for designing and manufacturing high-performance epoxy products.