1、High performance epoxy resin with ultralow coefficient of thermal
To investigate the thermal and mechanical properties of the epoxy resins cured by the conformation-switchable curing agent, we adopt several conventional arylamine curing agents and R140 to prepare epoxy resins.
2、Thermal curing of epoxy resins at lower temperature using 4
In this study, we present N -methyl- N -pyridyl amide derivatives as thermal latent curing agents for use at lower temperatures, along with their mechanism of epoxy curing through the generation of the highly reactive 4- (methylamino)pyridine (4MAPy) (Figure 1).
3、A review of the curing rate and mechanical properties of epoxy resin on
In epoxy resin composite, the curing rate of epoxy resin determines the production efficiency, cost, and applications. The majority of the composite preparation cycle is dedicated to the curing reaction of the epoxy resin matrix.
4、THE ROLE OF THE EPOXY RESIN: CURING AGENT RATIO ON COMPOSITE
This paper focuses on analyzing the interfacial and thermal properties of an epoxy resin glass fibre reinforced composite.
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.
Thermal conductivities and mechanical properties of epoxy resin as a
Here, molecular dynamics simulations are used to calculate, compare, and elucidate connections between both thermal conductivities and mechanical properties of an exemplar epoxy resin, Bisphenol F cross-linked with Diethyl Toluene Diamine, as a function of degree of cross-linking.
Effect of Curing Agent Compounding on Heat Resistance of Epoxy Resin
Power insulation equipment needs to work in high temperature environment for a long time. With the increase of power level, higher requirements are put forward.
Improved curing performances of epoxy resin by a structure
Then, effect of synthesis conditions on the performances of curing agent was studied, including the reactant ratio, reaction temperature and time. To improve the heat stability of curing agent and dispersion ability of epoxy resin latex, 5 wt% of HAc (to -NH) was applied as a neutralization agent.
A review of the curing rate and mechanical properties of
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.
High performance epoxy resin with ultralow coefficient of thermal
In this work, we design and synthesize a new kind of conformation-switchable curing agent that contains dibenzocyclooctadiene (DBCOD) unit, named as cis -diamine-DBCOD.
In the field of materials science and engineering, understanding and mastering the physical properties of various materials is crucial. Among these, curing agents are an indispensable component of epoxy resin systems, and their performance directly impacts the curing process, final properties, and application scope of the entire system. Specifically, the heat release coefficient of curing agents—a parameter that governs both the efficiency of the curing reaction and the effective utilization and safety control of energy—is of particular importance. This article explores the heat release coefficient of epoxy resin curing agents and its significance in detail.
I. What is the Heat Release Coefficient of Epoxy Resin Curing Agents?
The heat release coefficient refers to the amount of heat released or absorbed per unit mass per unit time, typically expressed in joules per mole per second (J/(mol·s)). For epoxy resin curing agents, this coefficient reflects the substance’s capacity to release or absorb heat during the reaction. The magnitude of this coefficient directly influences the speed and efficiency of the curing reaction.
II. The Impact of the Heat Release Coefficient on Epoxy Resin Curing
- Effect on Curing Speed
The heat release coefficient is a key factor determining the curing speed of epoxy resins. Generally, curing agents with a higher heat release coefficient accelerate the curing process of the resin matrix, shortening the curing cycle and improving production efficiency. Conversely, curing agents with a lower heat release coefficient slow down the reaction, prolonging production time and increasing energy consumption.
- Effect on Curing Quality
Beyond speed, the heat release coefficient also affects curing quality. Curing agents with a high heat release coefficient facilitate rapid cross-linking reactions, resulting in denser and more uniform cured structures. In contrast, curing agents with low heat release coefficients may lead to incomplete curing, compromising the mechanical performance and durability of the final product.
- Effect of Environmental Conditions
The heat release coefficient is also influenced by environmental factors such as temperature. Under high-temperature conditions, curing agents with a higher heat release coefficient can dissipate heat more effectively, preventing overheating and ensuring safe and stable production. In low-temperature environments, curing agents with lower heat release coefficients may require additional heating equipment to sustain the curing reaction.
III. How to Select Appropriate Epoxy Resin Curing Agents?
When selecting epoxy resin curing agents, it is essential to consider factors such as the heat release coefficient, compatibility with the resin, and cost. Generally, curing agents with a moderate heat release coefficient and good resin compatibility balance curing speed, quality, and environmental stability. Additionally, evaluating the cost-performance ratio ensures optimal performance while controlling expenses.
the heat release coefficient of epoxy resin curing agents is a critical performance parameter. It governs not only the efficiency and quality of the curing process but also production costs and environmental control. in practical applications, rigorous research and testing of the heat release coefficient of curing agents are imperative to ensure they meet specific operational requirements and deliver optimized overall performance.
