1、Catalyst

This study addresses these challenges by modifying the catalyst to regulate the curing process. By lowering the activation energy of the overall curing reaction, we suppressed the heat accumulation and uneven curing while enhancing the degree of cure and crosslinking density.

2、Frontal Polymerization of Epoxy Resins: Kinetic Modeling, Rate

Radical-induced cationic frontal polymerization (RICFP) represents an innovative curing mechanism for epoxy resins that employs photoacid generators (PAGs) to initiate cationic polymerization, resulting in ring opening and subsequent polymerization of the epoxy resin.

3、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.

4、Interactions and Curing Dynamics Between UV

These properties, along with rapid UV curing, support the suitability of the proposed systems for advanced applications such as system-in-package (SiP) and 3D integration.

Current situation and development trend of reactive epoxy resin curing

Curing agent changes the properties of epoxy resin to obtain new curing products. With the development of industrial technology in China, there are many kinds of epoxy resin curing products, including polyamine curing agent, acid anhydride curing agent, polymercaptan curing agent and so on.

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.

The effect of epoxy resin and curing agent groups on mechanical

Enhancing matrix strength can be achieved by modifying the structure of curing agents. With the widespread application of epoxy resin composites, understanding the inherent relationship between epoxy resin crosslinking structures and their properties has become increasingly crucial.

The epoxy resin system: function and role of curing agents

Epoxy resins are frequently used in electrical devices, castings, packaging, adhesive, corrosion resistance, and dip coating. In the presence of curing agents, epoxy resins become rigid and...

The epoxy resin system: function and role of curing agents

The epoxy resin curing reaction is accelerated or regulated by epoxy curing agents. During the curing phase, the epoxy resin undergoes irreversible modifications.

Functional dendritic curing agent for epoxy resin: Processing

Considering the advantage of dendrimers, such as high density of functional terminal groups, greater solubility in resins, we proposed to use them as modifying agents to prepare functionalized curing agents for curing and toughening epoxy resins.

In the field of modern material science, epoxy resin, as a high-performance synthetic resin, is widely used in industries such as electronics, automotive, aerospace, construction, and more due to its excellent adhesion, mechanical strength, and chemical stability. the complexity of the epoxy resin curing process and its sensitivity to environmental conditions limit its applications. developing an effective epoxy curing agent activity regulation technology is of great significance for enhancing the performance and expanding the application range of epoxy resins.

Epoxy curing agent activity regulation technology refers to controlling the chemical reaction rate, crosslinking density, and final physical properties of epoxy resin during the curing process by adjusting the type and dosage of curing agents, reaction conditions, and adding specific auxiliary materials. The core of this technology lies in effectively controlling the epoxy resin curing process to meet different application fields and performance requirements.

I. Importance of Epoxy Curing Agent Activity Regulation

The curing of epoxy resin is a complex chemical reaction process involving multiple reactants. The activity of these reactants directly affects the curing speed, crosslinking degree, and final mechanical properties of the epoxy resin. For example, the acid anhydride component in the curing agent is one of the main factors influencing the curing of epoxy resin, and its activity directly determines the curing speed and crosslinking degree. Additionally, environmental factors such as curing temperature, humidity, and light exposure significantly impact the curing process. regulating the activity of epoxy curing agents can effectively control the curing process, thereby meeting the demands of diverse applications.

II. Principles and Methods of Epoxy Curing Agent Activity Regulation

1. Selecting Appropriate Curing Agent Types: Choose curing agent types based on the application needs and performance requirements of the epoxy resin. Different curing agents have varying activity characteristics. For instance, acid anhydride curing agents exhibit high activity, while phenolic curing agents have lower activity. Selecting suitable curing agents enables effective control over the curing process.

2. Adjusting Curing Agent Dosage: The dosage of the curing agent directly affects the curing speed and crosslinking degree of the epoxy resin. Adjusting the dosage can modulate the curing performance. For example, increasing the amount of acid anhydride curing agent accelerates the curing process, but excessive dosage may lead to over-crosslinking and brittleness.

3. Optimizing Reaction Conditions: Factors such as temperature, humidity, and light exposure influence the curing process. By controlling these conditions, the curing process can be regulated. For example, curing epoxy resin at lower temperatures slows the process, improving mechanical properties, while higher humidity promotes curing reactions.

4. Adding Auxiliary Materials: In some cases, specific additives can enhance curing performance. For instance, catalysts accelerate curing reactions, while inhibitors delay them.

III. Practical Applications of Epoxy Curing Agent Activity Regulation Technology

This technology holds broad prospects in practical applications. In aerospace, it enables fast curing and high mechanical properties in epoxy composite materials. In electronics, it improves the electrical performance and reliability of epoxy circuit boards. In construction, it achieves rapid curing and strong adhesion in epoxy adhesives.

epoxy curing agent activity regulation technology is key to realizing high-performance applications of epoxy resin. By selecting appropriate curing agents, adjusting dosages, optimizing reaction conditions, and adding auxiliary materials, the curing process can be effectively controlled to meet diverse needs. With technological advancements and new material development, this technology will continue to expand its application potential.