1、Mechanical properties and hydrophobicity improvement of epoxy coatings

Subsequently, the modified curing agents were homogeneously blended with epoxy resin to fabricate epoxy coatings. The performance of these modified epoxy coatings was comprehensively evaluated from multiple aspects, encompassing mechanical properties, thermal stability, and surface wettability.

2、Effect of the Structure of Epoxy Monomers and Curing Agents: Toward

Herein, a liquid crystalline epoxy (LCE) monomer with a biphenyl mesogenic unit was first synthesized through an efficient one-step reaction.

3、Preparation and antifouling properties of Organic

By blending the self-made curing agent, modified nano-Ag, and E-44, an organic-inorganic hybrid epoxy resin integrating microbial attachment inhibition, hydrophobicity, liquid crystallinity, and micro-nano surface structure was successfully prepared.

4、Influence of different composite curing agents on the rapid curing

In particular, effective formulations are designed for mixing fast and slow curing agents, studying their effects on the curing behavior, curing quality, and mechanical properties of...

5、Study on hydrophobicity and aging characteristics of epox

To address this issue, this study modifies epoxy resin (EP) by incorporating nano-MgO to improve its hydrophobic properties. Initially, molecular dynamics simulations were conducted to determine the optimal doping ratio of nano-MgO by evaluating modified materials with varying concentrations.

High

High-Impact Epoxy Resins with Superior Hydrophobicity Toughened by Epoxy Functionalized Poly (olefin- alt-maleimide) Derivatives.

Reinforced Superhydrophobic Anti

After adding F–SiC, the hydrophobicity, wear resistance and corrosion resistance of the coating were significantly improved. In addition, the corrosion resistance of the composite coating containing different contents of F–SiC was analyzed through electrochemical and salt spray tests.

Influence of Preparation Methods and Nanomaterials on Hydrophobicity

To enhance the surface stability and durability of superhydrophobic coatings, nanoparticle/epoxy formulations were developed using three types of nanoparticles, two dispersion techniques, three application methods, and two epoxy resin introduction approaches.

Research Progress in Waterborne Epoxy Resin Curing Agent

The effect of the compatibility and reactivity of waterborne epoxy curing agents on the curing films and its control methods were also discussed，which provided guidance for selection of suitable curing agents and development of waterborne epoxy curing agent with excellent performance.

UV

Herein, we have prepared a flexible and self-healing epoxy acrylic coating by introducing dynamic disulfide bond and dangling chain into the resin system, furthermore, sprayed nano-SiO2 to construct the micro surface structure to endow the coating with super-hydrophobicity.

With the rapid development of modern industry, epoxy resins have seen increasingly widespread applications in fields such as electronics, aerospace, automotive, and construction. As an indispensable component of epoxy resin systems, the performance of curing agents directly impacts the final properties of the entire system. Among these, the hydrophobicity of curing agents is a critical factor affecting the properties of cured epoxy resins. This paper explores the concept, influencing factors, and practical applications of the hydrophobicity of epoxy resin curing agents.

I. Definition and Importance of the Hydrophobicity of Epoxy Resin Curing Agents

The hydrophobicity of epoxy resin curing agents refers to the content or distribution of hydrophilic groups within the curing agent molecules. Hydrophilic groups typically include those capable of forming hydrogen bonds with water molecules, such as hydroxyl groups (-OH) and carboxyl groups (-COOH). Hydrophobic groups, by contrast, are those that interact weakly with water molecules, such as benzene rings and carbon chains.

The impact of hydrophobic curing agents on epoxy resin systems is manifested in several key aspects:

1. Improving curing rate: Hydrophobic curing agents reduce the contact angle between the resin and curing agent, promoting the curing reaction and accelerating the curing process.
2. Enhancing mechanical properties: By adjusting the hydrophobicity of curing agents, the hardness, toughness, and impact resistance of the cured material can be fine-tuned.
3. Optimizing electrical insulation: Hydrophobic curing agents improve the electrical insulation properties of the cured resin, reducing surface resistivity.
4. Boosting chemical resistance: Certain hydrophobic curing agents enhance the chemical corrosion resistance of the resin, extending its lifespan in harsh environments.

II. Factors Influencing the Hydrophobicity of Epoxy Resin Curing Agents

1. Molecular structure: The hydrophobicity of curing agents is closely tied to their molecular structure. Compounds with longer carbon chains tend to provide more hydrophobic environments, facilitating the curing reaction.
2. Functional group properties: The nature of functional groups in curing agents affects hydrophobicity. For example, compounds with abundant hydroxyl groups are generally more hydrophilic, while those with fewer hydroxyl groups exhibit greater hydrophobicity.
3. Molecular weight: Larger-molecule compounds often demonstrate stronger hydrophobicity due to lower solubility in solvents, which stabilizes hydrophobic environments.
4. Additive effects: The addition of specific additives, such as surfactants or plasticizers, can modulate the hydrophobicity of curing agents.

III. Practical Applications of the Hydrophobicity of Epoxy Resin Curing Agents

1. Improving curing efficiency: In industrial production, hydrophobic curing agents are commonly used to accelerate the curing process of epoxy resins and enhance productivity.
2. Tailoring material properties: By adjusting the hydrophobicity of curing agents, composites with specific properties—such as high strength, wear resistance, or corrosion resistance—can be engineered.
3. Addressing specialized challenges: In niche applications like aerospace or nuclear industries, customized hydrophobic curing agents are employed to meet stringent requirements, ensuring material safety and reliability.

Research on the hydrophobicity of epoxy resin curing agents is crucial for advancing the development of epoxy materials. A deep understanding of the factors influencing hydrophobicity and its effects on material properties enables better design and application of epoxy systems to meet diverse industrial needs. In the future, ongoing advancements in materials technology will drive further innovation in this field, expanding the potential applications of epoxy resin materials.