1、UV

During heating and curing, the hydrophilic groups reacted with the coating curing agent and were eliminated, thus finally forming a dispersed hydrophobic barrier with enhanced anti-corrosion properties.

2、Hydrophobic Epoxy Curing Agents

Hydrophobic epoxy curing agents are specially designed compounds that react with epoxide groups in epoxy resins, yielding water-insoluble, three-dimensional networks.

3、UV Curable Robust Durable Hydrophobic Coating Based on Epoxy Polyhedral

In this work, we built a robust, durable hydrophobic coating with functional EP-POSSs and their derivatives containing long-chain alkyl groups and/or fluoroalkyl groups, functionalized surface-modified nanoparticles, cation photoinitiators, and suitable organic solvents as building blocks.

4、High‐Performance Epoxy Adhesives for Underwater

In this paper, we developed a novel epoxy resin (EP) underwater adhesive by incorporating hydrophobic‐modified curing agents and hydrophobic fumed silica. The curing agents were formulated by blending phenolic amine 810 with polyamide 651 (PA651), ensuring a balanced combination.

5、Hydrophobization of fully bio

Three bio-based additives (hexanoic acid, resveratrol, and a cardanol-based epoxy resin) were studied aiming to enhance the hydrophobicity of the coatings. The curing reaction mechanisms have been extensively explored.

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 properties, insulation performance, thermomechanical properties, thermal stability, and hydrophobicity of the prepared epoxy resins was systematically explored.

Synthesis and properties of a nonionic water

In this study, we synthesized a B-A-B type epoxy compound with a long hydrophobic alkyl chain connected to the intermediate nitrogen atom, using ethylene glycol diglycidyl ether and 3,4-dimethoxyaniline as raw materials. Subsequently, the epoxy compound was sealed with triethylenetetramine.

Waterborne Epoxy Curing Agents: An Emerging Eco

Waterborne epoxy curing agents are novel environmentally friendly materials produced by modifying traditional amine-based curing agents with hydrophilic groups.

Phosphorus

Study on synthesis of novel phosphorus-containing flame retardant epoxy curing agents from renewable resources and the comprehensive properties of their combined cured products

dmp

This article explores the use of DMP-30 as a curing agent with hydrophobic properties for waterproofing applications, referencing international studies and providing detailed insights into its characteristics and benefits.

Epoxy Curing Agents with Hydrophobic Groups

In modern industry and scientific research, epoxy resins are widely used across numerous fields, including construction, electronics, and aerospace. Epoxy resins are renowned for their excellent mechanical properties, electrical insulation, and chemical stability. to achieve these advantages, epoxy resins must undergo a specific curing process to form a stable network structure. In this process, curing agents play a critical role.

Curing agents are chemicals that react with epoxy resins and promote their cross-linking into solid materials. They typically contain reactive groups such as hydroxyl (-OH) or carboxyl (-COOH), which can undergo chemical reactions with the epoxide groups (C=C) in epoxy resins. This reaction, known as the curing reaction, hardens the epoxy resin and ultimately transforms it into a rigid solid material.

The role of curing agents in the curing process of epoxy resins is indispensable. First, curing agents accelerate the curing speed of epoxy resins by providing additional reactive sites. Second, the presence of curing agents enhances the mechanical properties of epoxy resins, such as hardness and impact resistance. Additionally, curing agents can improve the electrical properties of epoxy resins, for example, by increasing their dielectric strength and thermal stability.

selecting the appropriate curing agent is crucial to ensuring the performance of epoxy resins. Different epoxy resins may require different types of curing agents to achieve optimal curing effects and properties. several factors must be considered when choosing a curing agent:

1. Type of Epoxy Resin: Different epoxy resins may have varying requirements for curing agents. For instance, aromatic epoxy resins often require aliphatic or cycloaliphatic curing agents for better performance.

2. Curing Conditions: Factors such as curing temperature, time, and pressure also influence the selection of curing agents. In some cases, adjusting the dosage of the curing agent or adding catalysts may be necessary to optimize the curing process.

3. Application Requirements: Based on specific needs, curing agents may need to possess particular performance characteristics, such as heat resistance, corrosion resistance, or conductivity.

4. Environmental Factors: Environmental considerations, such as toxicity and volatile organic compound (VOC) content, must also be taken into account.

In practical applications, the selection and ratio of curing agents directly affect the performance of epoxy resins. For example, excessive curing agents may lead to incomplete curing, reducing mechanical properties, while insufficient curing agents can cause rapid curing, resulting in brittle materials. precise control over the dosage and ratio of curing agents enables accurate tuning of epoxy resin properties.

Beyond selecting the right curing agent, other factors must be addressed to ensure the final performance of epoxy resins meets expectations. These include:

1. Quality of Raw Materials: High-quality epoxy resins and curing agents, free of impurities and meeting relevant standards, must be used.

2. Uniform Mixing: Thorough mixing of epoxy resins and curing agents is essential to avoid air bubbles or other defects.

3. Storage Conditions: Both curing agents and epoxy resins must be stored under appropriate conditions to prevent moisture absorption, oxidation, or caking.

4. Post-Processing: Cured epoxy resins may require grinding, polishing, or other post-processing steps to improve surface quality and aesthetics.

the curing of epoxy resins is a complex chemical process involving multiple interacting factors. Selecting the appropriate curing agent and strictly controlling related parameters are vital to ensuring the performance of epoxy resins. With advancements in technology and the emergence of new materials, innovative methods and techniques may further expand the potential applications of epoxy resins in the future.