1、Influence of amine curing agents on phase change performance in

In 3.1, four structurally similar amine curing agents were chosen as model compounds to examine the relationship between curing agent properties and phase change behavior.

2、Impact of carbamate formation on the surface tension of epoxy‐amine

Understanding how the system's surface tension changes during curing could help target applications for tailored composites. Using the Wilhelmy plate method, surface tensions for epoxy-curing agent systems were investigated under different environments.

3、Curing kinetics and performances of synthesized multi

In this study, two novel multi-amine compounds with more active groups, modified dicyandiamide (MDY) and branched polyamine (BPA), were synthesized and applied as the high-efficiency curing agents for epoxy powder coatings.

4、Effects of Curing Agents on the Adhesion of Epoxy Resin to

Hardeners of the thiol type, which contain relatively heavy sulfur atoms, and hardeners with aromatic rings, displaying high planarity, enable the entire molecule to approach the metal surface, resulting in a relatively high adhesion strength.

5、Bio

Bio-based epoxy curing agents from lignin was synthesized by ring-opening reactions of cyclic aza-silane species to obtain lignin-based curing agents with amine hydroxyl equivalent weights up to 68 g/eq.

Study on curing kinetics of epoxy

In this report, curing kinetics of epoxy/amine is examined in an effort to reveal solutions to reducing temperature caused by the exothermic reaction. A versamid amine (VDETA) and a butyl ether modified amine (BDETA) derived from diethylene triamine (DETA) are employed as curing agents for a liquid diglycidyl ether of bisphenol A (DGEBA).

Impact of carbamate formation on the surface tension of epoxy

Epoxy-amine reactive systems, including their surface tension, have been stud-ied due to their use and importance in composites and adhesives in laboratory and industrial applications. Understanding how the system's surface tension changes during curing could help target applications for tailored composites.

Cure Kinetics of Commercial Epoxy

The dependence of the apparent activation energy for the epoxy-amine reaction on the degree of conversion can be obtained by applying iso-conversional methods to the non-isothermal cure data obtained by using differential scanning calorimetry (DSC).

Cure kinetics and thermal degradation characteristics of epoxy

In this paper, we report detailed cure kinetics of epoxy and polyetheramine (Jeffamine) systems. Three cured epoxy networks were prepared by using three types of Jeffamines having different molecular masses and polyether segment in the chain.

Effect of the Aromatic Amine Curing Agent Structure on Properties of

Epoxy resin is one of the commonly used matrixes of syntactic foams as a buoyancy material, the curing agents of which affect some of the properties for syntactic foams.

Abstract: This paper aims to investigate the surface energy characteristics of epoxy amine curing agents and their impact on the performance of coatings and films. Epoxy amine curing agents are critical components in the curing process of epoxy resins, and their surface energy significantly affects adhesion, durability, and overall coating performance. This study elaborates on the definition of surface energy, influencing factors, and the relationship between surface energy and coating properties.

Keywords: Epoxy amine curing agent; Surface energy; Coatings; Film performance; Epoxy resin

1. Introduction

Epoxy amine curing agents are essential chemical materials widely used in coatings, adhesives, and sealing materials. Surface energy, defined as the magnitude of intermolecular interaction forces, directly influences wettability, adhesion, and mechanical properties. In coatings and film applications, the surface energy of epoxy amine curing agents plays a pivotal role in determining coating performance. This paper provides a detailed analysis of the surface energy of epoxy amine curing agents and explores its effects on coating properties.

2. Definition of Surface Energy in Epoxy Amine Curing Agents

Surface energy refers to the magnitude of intermolecular interaction forces, including van der Waals forces, hydrogen bonds, and ionic bonds. Higher surface energy indicates stronger intermolecular interactions, leading to better adhesion in coatings. Conversely, lower surface energy results in weaker adhesion.

3. Factors Affecting Surface Energy of Epoxy Amine Curing Agents

1. Temperature: Elevated temperatures increase molecular thermal motion, thereby raising surface energy. Conversely, lower temperatures reduce thermal motion and decrease surface energy. Temperature is a significant factor affecting surface energy.

2. Humidity: Higher humidity increases the presence of water molecules, enhancing surface energy. Reduced humidity diminishes water content, lowering surface energy. Humidity also markedly influences surface energy.

3. Additives: The type and dosage of additives substantially affect surface energy. For example, surfactants can improve surface energy, subsequently enhancing coating adhesion.

4. Relationship Between Surface Energy and Coating Performance

1. Adhesion: Higher surface energy in epoxy amine curing agents improves adhesion between coatings and substrates. Stronger intermolecular interactions facilitate stable bonding with substrate surfaces.

2. Durability: Greater surface energy enhances coating durability by promoting reactions with atmospheric moisture and oxygen to form protective layers, extending service life.

3. Overall Performance: Surface energy also impacts other coating properties. Excessive surface energy may reduce hardness and wear resistance, while insufficient energy could compromise flexibility and impact resistance.

the surface energy of epoxy amine curing agents critically influences coating performance. By adjusting temperature, humidity, and additive formulations, surface energy can be optimized to improve coating properties. Future research and industrial applications should prioritize studying and leveraging surface energy to advance coating technologies.