1、The Working Principle of Epoxy Penetrating Curing Agents
The working principle of epoxy curing agents can be summarized as follows: Amines, acids, and phenols in curing agents react with epoxy groups in the resin, forming a three-dimensional network structure that enhances mechanical strength and chemical resistance.
2、环氧树脂固化剂的常见类型及其固化机理
环氧树脂固化剂的常见类型及其固化机理 本文简要概述了环氧树脂固化剂的常见类型及其固化机理。 包括脂肪族二胺和多胺、芳香族多胺、其他含氮化合物和改性脂肪族胺。 伯胺和仲胺对环氧树脂的固化作用是通过氮原子上的活性氢打开环氧基团，使其交联 ...
3、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 infusible. Eco-friendliness and mechanical functionality have emerged as vulcanization properties.
环氧树脂的固化剂 (Curing Agents for Epoxy Resin)
酮亚胺，是由脂肪族多胺如DTA，TTA，DPDA，m-XDA，和酮类如甲乙酮（MEK），异丁基酮（MIBK）反应而得到的产物，作为高固含涂料中固化剂的应用而引起广泛兴趣。 酮亚胺和环氧树脂混合后的反应非常缓慢，但当其用在涂料中时，是作为一种潜伏性固化剂，通过吸收空气中的水份重新释放出胺基，在常温下完成固化。 脂肪胺固化剂可以和环氧树脂在常温下实现固化，固化后树脂的性能优异，耐温性可以达到100°C。 和脂肪胺相比，芳香胺固化后的耐温性和耐化性则更高。 环氧-胺固化反应的过程可以下图所示，伯胺中的活泼氢首先和环氧基反应形成仲胺，仲胺进一步和环氧基发生反应。 而形成的叔胺则和环氧基完成聚合反应。
Epoxy Curing Agents
Clear and pigmented coatings based upon Amicure® IC curing agents exhibit very rapid hardness development, excellent low temperature cure, very good color and UV stability and excellent surface appearance.
Curing Agent: Types & Process of Curing Agents for Epoxy Resin
Explore the main types of curing agents & various crosslinking methods which help to improve the polymerization process to select the right curing agent for coating formulation.
Epoxy Curing Agents: A Comprehensive Understanding of Their
Explore the basic knowledge of epoxy curing agents, including their classification, working principle, wide application in construction, electronics, automotive and other industries, as well as market trends and the latest developments of environmentally friendly products.
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.
高韧性及快速固化环氧树脂体系的研究进展
摘要 概述了环氧树脂增韧及快速固化方面的最新研究进展。 内容包括采用柔性固化剂如改性脂肪族胺类、酸酐类、聚醚胺类、聚氨酯类、含硅氧链类、液晶胺类固化剂增韧,在环氧树脂中引入醚键、硅氧键、热致型液晶等柔性基团增韧,添加反应型增韧剂...
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...
In modern industrial and construction fields, the application of epoxy resins has become ubiquitous. From the manufacturing of high-performance composites to the encapsulation of precision electronic components, and from the reinforcement and repair of various structures, epoxy resins play a critical role. Among these, epoxy penetrating curing agents, as an indispensable part of epoxy resin applications, merit in-depth exploration of their working principles. The following sections will analyze the mechanisms of epoxy penetrating curing agents in detail.
I. Chemical Cross-Linking Reactions
Epoxy groups are a key component of epoxy resin molecular structures, capable of undergoing chemical reactions with various curing agents to form stable three-dimensional network structures. These cross-linking reactions endow epoxy resins with excellent mechanical properties, chemical resistance, and electrical insulation. The chemical reactions between epoxy groups and curing agents typically include addition polymerization, ring-opening polymerization, and click chemistry, among others. These reaction processes not only determine the structure and performance of the final product but also influence the speed and temperature range of the curing process.
II. Curing Process
After the chemical reaction between epoxy groups and curing agents, the epoxy resin enters the curing stage. Curing involves the transition of epoxy resin from a liquid to a solid state, accompanied by both physical and chemical changes. Physical changes include volume shrinkage and hardening, while chemical changes involve the formation of intermolecular or intramolecular cross-linking networks. Controlling the curing process is crucial to ensuring the final product’s performance, as different curing conditions (e.g., temperature, pressure, time) affect the curing speed and mechanical properties.
III. Practical Applications
Taking the common bisphenol A epoxy resin as an example, its curing process can be adjusted by selecting different curing agents. For instance, peroxides can be added to accelerate curing, while amine-based curing agents improve hardness and wear resistance. In engineering practice, choosing the appropriate combination of epoxy groups and curing agents—and precisely controlling curing conditions—enables the production of epoxy resin products tailored to specific performance requirements.
IV. Prospects
With advances in materials science, research into novel epoxy groups and curing agents continues to expand, offering new possibilities for epoxy resin applications. For example, introducing reversible cross-linking systems allows for dynamic adjustment of epoxy resin properties under specific conditions. Additionally, the development of green curing technologies has become a focus, aiming to reduce harmful emissions during curing and achieve environmentally friendly processes.
epoxy penetrating curing agents are vital to the application of epoxy resins. By understanding their chemical cross-linking mechanisms, curing processes, and practical cases, we can better grasp the performance characteristics of epoxy resins and their potential across industries. As technology advances and market demands evolve, epoxy curing techniques will continue to develop, driving innovation and value creation across sectors.
