1、Study on epoxy resin with high elongation
Through solid state nuclear magnetic resonance (SSNMR), it was found that the cross-linking density of epoxy resin could be effectively reduced by adding the polyamide and polyether amine curing agent. The tensile tests showed that the elongation-at-break was remarkably improved.
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、Using Dihydrazides as Thermal Latent Curing Agents in Epoxy
In this study, highly adhesive epoxy-based sealing materials for liquid crystal (LC) displays were fabricated using different types of dihydrazides as thermal latent curing agents.
4、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.
5、Study on Flexible Epoxy Resin System with High Elongation
The research results showed that more flexible chain-extender, less curing agent and adequate accelerator were helpful to increase the elongation at break of the cured resin.
Composition optimization of a high
In this study, an optimization method for the multi-component epoxy resin system was put forward by using molecular dynamics simulations and machine learning methods.
Study on epoxy resin with high elongation
Through solid state nuclear magnetic resonance (SSNMR), it was found that the cross-linking density of epoxy resin could be effectively reduced by adding the polyamide and polyether amine curing agent. The tensile tests showed that the elongation-at-break was remarkably improved.
(PDF) Study on epoxy resin with high elongation
Through solid state nuclear magnetic resonance (SSNMR), it was found that the cross-linking density of epoxy resin could be effectively reduced by adding the polyamide and polyether amine...
FAST CURE, FLEXIBLE AND EHS FRIENDLY EPOXY COATINGS
s can improve flexibility but may reduce strength. Curing agents are typically based on amine chemistry, ofering wide range of options to optimize an epoxy system. Long-chain alkylphenol, such as nonylphenol, have been traditionally used o increase flex-ibility from the curing agent side. How-ever, nonylphenol is a reproductive toxin
Study on epoxy resin systems with high elongation at break
Abstract This study aimed to improve the flexibility of E-51 epoxy resin by using polyamide/polyether amine as a two-component curing agent. Through solid state nuclear magnetic resonance (SSNMR), it…
In modern industrial production, the performance of materials directly affects product quality and manufacturing efficiency. As a critical raw material in epoxy resin applications, the quality of epoxy curing agents determines key properties of final products, such as mechanical strength, temperature resistance, and electrical insulation. Among these, high-elongation epoxy curing agents have gained significant attention due to their exceptional performance.
The primary function of epoxy curing agents is to facilitate the crosslinking reaction of epoxy resins, forming a robust three-dimensional network structure that imparts superior mechanical properties and chemical stability. practical applications demand not only efficient crosslinking but also effective control over material shrinkage, reduction of internal stress during curing, and precise dimensional accuracy of the final product. This requires curing agents to combine high crosslinking efficiency with excellent elongation capabilities.
The development of high-elongation epoxy curing agents addresses the limitations of traditional curing agents. Through specialized chemical structures and formulations, these curing agents achieve low shrinkage and high elongation during curing. Specifically, they incorporate flexible polymer segments that absorb volumetric changes during curing, thereby reducing material shrinkage. Additionally, their reactive components enable rapid initiation of epoxy resin crosslinking at lower temperatures, improving curing efficiency.
In practice, high-elongation epoxy curing agents demonstrate notable advantages. For example, in the manufacture of high-performance electronic packaging materials, conventional curing agents may cause excessive shrinkage, compromising dimensional precision. By contrast, high-elongation curing agents effectively mitigate this issue, ensuring precise assembly requirements for electronic components.
These curing agents are particularly valuable in aerospace applications. In the fabrication of critical components like aircraft engine blades, where mechanical strength and heat resistance are paramount, high-elongation curing agents enhance thermal stability and toughness, improving component lifespan and reliability.
Despite their potential, the research and application of high-elongation epoxy curing agents face challenges. Balancing crosslinking efficiency with elongation properties to suit diverse applications remains a critical issue. Additionally, their relatively high cost may limit adoption in price-sensitive markets. Furthermore, advancements in new materials and technologies could introduce competitors with superior performance, challenging the market position of high-elongation curing agents.
Looking ahead, advances in materials science and chemical engineering will likely expand the applications of high-elongation epoxy curing agents. Through ongoing innovation and optimization, these curing agents can better meet the evolving demands of industries, contributing to progress across sectors.
