1、Preparation and properties of a novel waterborne epoxy resin modified

Waterborne epoxy resin is one alternative to enhance bond strength and storage stability for waterproof adhesive layer. Grafting copolymerization is selected in this paper as one experimental case to investigate its properties and also a feasible innovative preparation.

2、Waterborne epoxy resins modified by reactive polyacrylate modifier with

In this study, waterborne difunctional polyacrylate with long fluorinated side chains and epoxy groups (WALF) was used as emulsifier and reactive surface modifier for epoxy resin.

3、Preparation and Properties of Waterborne Acrylic

In this work, a type of waterborne acrylic-modified epoxy phosphate resin was synthesized by an “A-B-C” three-step method, involving three pathways: esterification, polymerization, and neutralization.

Development of waterborne epoxy

Water-based coating has gained much attention globally due to environmental issues. This work aims to develop a waterborne epoxy coating incorporated with modified natural rubber (NR) latex...

Optimization of preparation techniques for high

This study seeks to fabricate waterborne phenol-formaldehyde epoxy resins with superior performance by investigating pivotal factors influencing their properties and refining preparation methods.

Preparation of waterborne epoxy dispersion and its application in 2K

At present, there are two principle methods for preparing waterborne epoxy dispersions: phase inversion and chemical modification.

Advances in Waterborne Acrylic Resins: Synthesis Principle

This review summarizes the research on the modification of waterborne acrylic resin and analyzes and explores the composition and performance improvement mechanism and introduces the modification methods and application fields of waterborne acrylic resin.

Preparation Optimization and Performance Evaluation of Waterborne Epoxy

Based on the tensile properties, bending properties, impact resistance, and storage stability of waterborne epoxy resin, the preparation process of waterborne epoxy resin was optimized, and the bonding properties of waterborne epoxy resin were evaluated.

Epoxy Resin Water

Specifically, the epoxy resin can be waterborne by emulsifying method (including mechanical method, reverse transformation method), self-emulsifying method (also called chemical modification method), and curing agent modification method.

Preparation and performance characterization of waterborne epoxy resin

Waterborne epoxy resin modified emulsified asphalt (WEREA) was then prepared for the application of a tack coat material. Fourier Transform Infrared Spectroscopy (FTIR) test was conducted to explore the possible reactions between the compositions.

Epoxy resin, as a high-performance thermosetting polymer, is widely utilized in aerospace, automotive manufacturing, construction, and electronics due to its excellent mechanical properties, electrical insulation, and chemical resistance. its poor compatibility with water limits applications in humid environments. To address this challenge, researchers have developed various aqueous modification methods to enhance the hydrophilicity of epoxy resins. This article explores the principles, effects, and application prospects of these modifications.

I. Principles of Aqueous Modification for Epoxy Resins

Aqueous modification of epoxy resins is primarily achieved through the following approaches:

1. Surface Treatment: Modify the epoxy surface by coating it with hydrophilic materials such as poly(dimethylsiloxane) (PDMS) or poly(vinyl alcohol) (PVA) to reduce surface polarity and minimize water interaction.

2. Introduction of Hydrophilic Groups: Incorporate hydrophilic functional groups (e.g., hydroxyl [-OH] or carboxyl [-COOH]) into the epoxy molecular structure to form hydrogen bonds with water, improving hydrophilicity.

3. Use of Crosslinking Agents: Employ water-reactive crosslinking agents (e.g., epoxy-containing compounds) to create a network structure post-curing, introducing hydrophilic groups and enhancing water compatibility.

4. Blend Modification: Combine epoxy resin with hydrophilic polymers to leverage synergistic effects, improving overall water compatibility.

II. Effectiveness Analysis of Modification Methods

These modifications significantly improve epoxy resin’s stability and dispersibility in water. For example:

• Surface treatment maintains dispersion without rapid settling.
• Hydrophilic group introduction boosts water absorption and swelling rates without compromising mechanical properties.
• Crosslinking agents enhance hydrolytic resistance, extending service life.
• Blend modification optimizes cost-performance balance.

III. Application Prospects of Aqueous Modification

With growing environmental awareness and green chemistry trends, aqueous modifications offer new possibilities for epoxy resins:

1. Cost Reduction: Decreases reliance on organic solvents.
2. Enhanced Performance in Humid Conditions: Critical for specialized applications.
3. Extreme Environment Potential: Epoxy’s inherent thermal and chemical stability, combined with aqueous modifications, enables broader use in harsh settings.

Aqueous modification of epoxy resins is a promising research field. Methods such as surface treatment, hydrophilic group incorporation, crosslinking, and blending effectively improve water compatibility, expanding application scope. Future advancements are expected to introduce more efficient, eco-friendly techniques, supporting the widespread adoption of modified epoxy resins.