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
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.
3、Factors Affecting Epoxy Resin Curing Time
Temperature is the most significant factor affecting epoxy resin curing time. Warmer temperatures accelerate the chemical reaction while cooler temperatures slow it down.
4、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...
5、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.
Parameter estimation of epoxy resin cure kinetics by dynamics DSC data
Abstract This study focused on determining the curing kinetic parameters of amine-epoxy resin by performing dynamic DSC tests. The Kissinger and Crane equations were used to determine the activation energy, the pre-exponential factor, and the reaction order as kinetic parameters for curing.
Surface Chemistry and Molecular Dynamics of Epoxy Resin
In this study, we investigate the main reactions occurring on the surface of DEGBA/DEGBF epoxy resin following curing, post-curing, and thermal post-curing processes using Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS).
The effect of epoxy resin and curing agent groups on mechanical
The mechanical properties and glass transition temperatures of epoxy resin systems with different structures were compared to investigate the influence of the epoxy resin and curing agent structures on the system performance.
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 frequently used in electrical devices, castings, packaging, adhesive, corrosion resistance, and dip coating.
Effect of Curing Agent and Temperature on the Rheological Behavior of
The effect of curing agent (6610) content and temperature on the rheological behavior of the epoxy resin CYD-128 was studied by DSC analysis and viscosity experiments.
Epoxy resin, as a critical industrial and construction material, requires precise control over its curing process. Curing agents are essential components that drive the chemical reaction of epoxy resins, determining the rate at which the resin transitions from liquid to solid and ultimately influencing its performance. Understanding the time-dependent characteristics of epoxy resin curing agents is vital for optimizing material applications, enhancing production efficiency, and ensuring product quality.
The mechanism of epoxy resin curing agents involves chemical reactions. During curing, hydroxyl groups in the resin react with active functional groups in the curing agent, forming a three-dimensional cross-linked network structure. This structure imparts mechanical strength and chemical stability to the material. The speed of this reaction directly affects the efficiency of the curing agent and the overall curing time.
Epoxy resin curing agents come in diverse types, including aliphatic amines, aromatic amines, anhydrides, and acids. Each type has unique properties, such as reaction rate, curing temperature, and post-cure performance. Selecting the appropriate curing agent is crucial for successful epoxy resin curing.
The dosage of the curing agent significantly impacts curing time. Excessive amounts can lead to over-cross-linking, prolonging curing time, while insufficient dosages may result in incomplete curing and compromised performance. Accurate measurement of the curing agent is therefore key to controlling curing time.
Curing temperature is another critical factor. Different epoxy resins require specific curing temperatures, and deviations (too high or low) can either extend or shorten curing time. Typically, the recommended curing temperature range for epoxy resins is from room temperature to 120°C.
Curing time control depends not only on the type and dosage of the curing agent but also on factors such as resin formulation, environmental humidity, and curing equipment. For example, high humidity can reduce surface tension, slowing the curing reaction. Additionally, curing equipment design and operation—such as the use of automated temperature-controlled ovens—can improve precision and reduce curing time.
The time characteristics of epoxy resin curing agents have far-reaching implications for material applications. In electronic packaging, rapid curing minimizes defects and enhances reliability. In aerospace, high-performance epoxies paired with fast-curing agents significantly shorten manufacturing cycles and reduce costs.
Curing time also serves as a tool for tuning material properties. By adjusting curing time and conditions, physical and chemical properties—such as hardness, flexibility, and impact resistance—can be optimized. This is particularly important in automotive manufacturing and structural reinforcement.
Controlling the curing time of epoxy resin agents is a complex, multifaceted process. Through in-depth understanding and meticulous adjustment of various factors, epoxy resins can achieve rapid, uniform curing while meeting performance requirements. This balance enables epoxy materials to deliver greater value in industrial and construction applications.
