1、Imidazole
One-component epoxy resins (OCERs) offer simplified processing and improved handling, but achieving long-term storage stability while independently controlling cure temperature remains challenging. In this study, polymeric thermal latent curing agents (TLCs) with covalently bound imidazole and long alkyl urea functionalities were synthesized via post-polymerization modification of poly (2 ...
2、All‐In‐One Epoxy/MXene Nanocomposites with Bead‐Type Polymeric
Here, it is demonstrated that all-in-one epoxy/MXene nanocomposite system, comprising epoxy resin, polymeric imidazole latent curing agent beads (PILCAB), and Ti 3 C 2 T x MXene, exhibits excellent storage stability, improved flame retardancy, and enhanced mechanical strength.
3、Effect of the Structure of Epoxy Monomers and Curing Agents: Toward
The effect of the structures of epoxy monomers and curing agents regarding the intrinsic thermal conductivity, dielectric proper-ties, insulation performance, thermomechanical properties, thermal stability, and hydrophobicity of the prepared epoxy resins was systematically explored.
4、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.
5、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.
Effect of Curing Agent Type on Curing Reaction Kinetics of Epoxy Resin
In this paper, low molecular weight polyamides, aromatic amines and anhydrides were selected as three kinds of curing agents and their isothermal viscosity-time properties were studied to...
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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-friendli-ness and mechanical functionality have emerged as vulcanization properties.
A critical review of dynamic bonds containing curing agents for epoxy
Investigated the mechanical, thermomechanical, thermal, and recycling properties of the epoxy thermosets cured by developed curing agents. Addressed the challenges, opportunities and emerging trends in the field.
Synthesis of polyfunctional amines as curing agents and its effect on
We investigated the effects of the curing agents on the mechanical properties of epoxy, including tensile strength, flexural strength, and impact strength.
In modern industry, epoxy resins, as high-performance thermosetting materials, are widely used in aerospace, automotive manufacturing, electronic packaging, construction, energy, and other fields due to their excellent mechanical properties, electrical insulation, and chemical stability. Epoxy curing agents are indispensable components for enabling the curing reaction of epoxy resins. They not only determine the speed and quality of curing but also directly affect the performance of the final product.
Epoxy resins are thermosetting compounds synthesized through the condensation of polyols and phenolic resins. Their molecular structures contain a large number of epoxide groups, which can undergo cross-linking and curing reactions under appropriate catalysts. The curing process typically requires the addition of curing agents, whose role is to provide sufficient reactive groups to promote or accelerate the curing reaction of the epoxy resin.
Common epoxy curing agents mainly include amines, anhydrides, and imidazoles. Among them, amine curing agents are widely used in various epoxy systems due to their good catalytic activity and low toxicity. Amine curing agents promote the curing process by forming stable adducts with the epoxide groups in epoxy resins.
The selection and application of epoxy curing agents involve multiple considerations. First, the type of curing agent must match the epoxy resin to ensure effective curing. Different types of epoxy resins may require different curing agents to achieve optimal curing results. For example, aromatic epoxy resins often require aliphatic amine curing agents, while aliphatic epoxy resins may be more suitable for aromatic amine curing agents.
Second, the dosage of the curing agent is critical. Insufficient curing agent leads to incomplete curing, compromising the mechanical properties of the product, while excessive curing agent may cause rapid curing, resulting in cracks or delamination. precise control of the curing agent dosage is essential for ensuring product quality.
Additionally, curing conditions significantly impact the epoxy curing process. Factors such as temperature, humidity, and light affect the reaction rate of the curing agent and the final product performance. For instance, excessively high temperatures may accelerate curing but increase shrinkage and brittleness, while low temperatures may slow down the reaction, leading to unstable product properties. Thus, curing conditions must be adjusted based on specific requirements to achieve optimal results.
Environmental requirements also play a crucial role in the selection and use of epoxy curing agents. With increasingly stringent environmental regulations, low-toxicity, low-emission eco-friendly curing agents are gaining attention. This not only protects the environment but also enhances the market competitiveness of products.
polymeric epoxy curing agents are vital to the application of epoxy resins. Selecting appropriate curing agents, precisely controlling dosages, adjusting curing conditions rationally, and prioritizing environmental considerations are key to ensuring the quality and performance of epoxy products. With the continuous development of new material technologies, future research on epoxy curing agents will deepen, providing stronger technical support for the widespread use of epoxy resins.
