1、Preparation of Epoxy Resin with Disulfide
In this study, we have prepared a disulfide-containing curing agent via the condensation of -NH 2 and methyl carboxylate groups, and the curing agent was used to crosslink with epoxy resin.
2、A novel bio
In this paper, a novel bio-based epoxy resin curing agent of gluconic aldehyde amine (GAA) was prepared by Mannish reaction to cure the E901 epoxy resin to prepare glucose-based epoxy resin film (GAAF), as well as the effect of reaction temperature on the properties of GAA and GAAF were investigated.
3、Novel Thermal Latent Curing Agents for Epoxy Resins Based on Dual
Herein, we present a dual-locked thermal latent curing agent based on aminopyridines, protected by amidation and N -oxidation, designed to enhance both pot life and final curing efficiency.
4、Preparation and properties of stretchable low temperature resistant
Two innovative molecular design strategies for epoxy curing agents to address the inherent brittleness and cryogenic limitations of conventional epoxy systems are introduced.
5、Preparation of Epoxy Resin with Disulfide
Herein, a novel self-healing epoxy resin was synthesized with disulfide-containing curing agent via the condensation of dimethyl 3,3′-dithiodipropionate (DTPA) and polyether amine (PEA).
Preparation of Latent Curing Agent for Epoxy Resin by Encapsulation
The coating efficiency and latency were analyzed by DSC analysis of the one-component adhesive composed of the microcapsule-type curing agent and epoxy resin.
Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a
Conceptual comparison between: A) the conventional epoxy network formed by curing a diepoxide with a primary diamine, and B) the proposed use of ammonium salts as curing agents for epoxy resins. Thus, in this work we explore the use of ammonium salts as curing agents for epoxy resins (Figure 1B).
Synthesis and Characterization of a Novel Curing Agent for Epoxy Resin
Chai et al. prepared two latent curing agents (PHI-HPP and EMI-HPP) by a simple method, and used them to make one-component epoxy resins. These resins have excellent properties including flame retardancy, long shelf life, fast curing, transparency, and good mechanical properties [10].
Preparation of Epoxy Resin with Disulfide
In this study, we have prepared a disulfide-containing curing agent via the condensation of -NH 2 and methyl carboxylate groups, and the curing agent was used to crosslink with epoxy resin.
环氧树脂特种固化剂的研制与应用（Preparation and
环氧树脂特种固化剂的研制与应用（Preparation and application of special curing agent for epoxy resin） Preparation and application of special curing agent for epoxy resin Liu Shougui, Tan Zhouqin, Zhang Jie Zhong Hao Chenguang Chemical Research Institute, Sichuan, Zigong 643201, China) Abstract: This paper introduces ...
In modern industry and scientific research, epoxy resins are widely utilized due to their exceptional physical properties, chemical stability, and superior electrical insulation. the extensive application of epoxy resins is closely tied to their curing techniques, with curing agents being the critical substances that enable the curing reaction of epoxy resins. The preparation of epoxy resin curing agents must adhere to scientific principles while considering specific practical demands. This paper explores the preparation methods and applications of epoxy resin curing agents.
1. Classification of Epoxy Resin Curing Agents
Epoxy resin curing agents are primarily divided into two categories based on their chemical composition: organic curing agents and inorganic curing agents. Organic curing agents include phenolic resins, polyols, aromatic amines, and other compounds, while inorganic curing agents encompass silane coupling agents, phosphate esters, metal chelates, and similar substances. Each type has distinct characteristics and suits different application scenarios.
2. Preparation Processes of Epoxy Resin Curing Agents
(1) Preparation of Organic Curing Agents
The preparation of organic curing agents typically involves the following steps: First, appropriate raw materials such as phenolic resins or polyols are selected. These materials then undergo chemical reactions to form precursors of the curing agent. Subsequently, the precursors are modified through further chemical processes to enhance their compatibility with epoxy resins and curing efficiency. Finally, purification steps such as distillation, crystallization, or refinement are employed to obtain high-purity products. For example, phenolic resins can be converted into polyhydroxy compounds via condensation polymerization, followed by modifications like oxidation or sulfonation to produce curing agents with specific functionalities.
(2) Preparation of Inorganic Curing Agents
The preparation of inorganic curing agents is relatively straightforward, involving processes such as mixing, grinding, and drying of raw materials. For instance, silane coupling agents are synthesized through reactions between silanes and epoxy groups, while phosphate esters can directly react with epoxy groups via esterification. These inorganic curing agents often exhibit high reactivity, enabling rapid curing when combined with epoxy resins.
3. Applications of Epoxy Resin Curing Agents
The diverse range of epoxy resin curing agents allows for tailored selection based on specific application requirements. For instance, organic curing agents with highly active functional groups are suitable for applications demanding high strength and wear resistance. In contrast, inorganic curing agents containing silanes or phosphate groups are preferred for scenarios requiring enhanced adhesion or weather resistance. Additionally, the emergence of novel curing agents driven by advancements in materials science continues to expand the utility of epoxy resin systems.
4. Future Development Trends of Epoxy Resin Curing Agents
Advancements in technology and material innovation have propelled the evolution of epoxy resin curing agents. Future research will prioritize environmental sustainability and high performance, while exploring curing agents with specialized functions. Key focuses include developing self-healing curing agents, eco-friendly formulations, and contamination-free curing systems to address niche application needs.
The preparation of epoxy resin curing agents is a multidisciplinary field encompassing chemistry, materials science, and physics. Through rigorous research and innovation, the development of epoxy resin materials and their applications can be advanced, contributing to technological progress and societal advancement.
