1、Preparation of waterborne epoxy dispersion and its application in 2K

Herein we present experimental schemes of a reactive emulsifier and three waterborne epoxy dispersions prepared for waterborne epoxy coatings.

2、Starting Formulation

A water dispersible epoxy resin, such as EPI-REZ Resin WD-510 or EPI-REZ Resin WD-512. These are liquid bisphenol A type epoxy resins that are specifically designed for water dilution. When appropriately blended with water, these resins form fine particle dispersions of liquid epoxy resin in water.

3、Development of waterborne epoxy

This work aims to develop a waterborne epoxy coating incorporated with modified natural rubber (NR) latex for improved performance.

Preparation and Properties of Waterborne Acrylic

Using the obtained waterborne epoxy phosphate resin as the film-forming material, an efficient waterborne epoxy coating can be prepared by screening waterborne additives and flash rust inhibitors.

High Performance Waterborne Coatings Based on Dispersions of a Solid

Most commercially available waterborne epoxy coat-ing systems are composed of a hydrophobic epoxy resin component and a hydrophilic, amine-functional curing agent.

Preparation of waterborne phosphated acrylate–epoxy hybrid dispersions

In this paper, a series of waterborne acrylic-modified epoxy hybrid dispersions were synthesized and successfully used as primers for coil coatings. Epoxy was phosphated to improve its adhesion to the metal substrate.

Preparation and characterization of waterborne silicone modified epoxy

Silicone modified epoxy resin was synthesized with bisphenol-A epoxy resin (E51) and dimethyldichlorosilane (DMDCS), and waterborne silicone modified epoxy resin (WSER) was prepared. The WSER emulsion exhibited good stability with particle size ranging from 0.5 to 2 μm.

Waterborne epoxy

The waterborne EPU dispersions were first synthesized to serve as seeds, and then the butyl acrylate (BA) and methyl methacrylate (MMA) monomers were introduced into EPU particles to form polymeric core by radical polymerization under the assistance of ultrasonic treatment.

Stable waterborne epoxy resins: Impact of toughening agents on coating

The CEB waterborne epoxy resins (CEBs) were synthesized through blending CA-4 with BPA at controlled ratios, followed by reaction with liquid epoxy resin. The research examined how the chain length in each CA influenced the properties of the resins, films and coatings.

Performance Evaluation and Mechanism Analysis of Modified Emulsion

The findings of this study are instrumental in advancing the application of waterborne epoxy resin modified emulsified asphalt mixtures in road maintenance and repair, offering a sustainable and performance-enhancing solution for pavement materials.

Waterborne Modified Epoxy Resin Dispersions

In modern industry and construction, epoxy resins are widely used due to their excellent chemical stability, mechanical properties, and electrical insulation characteristics. traditional solvent-based epoxy formulations often pose environmental pollution issues, limiting their application scope. Against this backdrop, waterborne modified epoxy resin dispersions have emerged as a solution. They not only address environmental concerns but also retain the fundamental properties of epoxy resins, offering new opportunities for advancements in material science.

I. Definition and Importance of Waterborne Modified Epoxy Resin Dispersions

Waterborne modified epoxy resin dispersions are emulsions or suspensions that use water as a solvent or dispersion medium, containing epoxy resin. Unlike traditional solvent-based epoxies, these dispersions avoid the use of volatile organic compounds (VOCs), significantly reducing harm to the environment and operators. Additionally, they exhibit better storage stability and construction convenience.

II. Preparation Process of Waterborne Modified Epoxy Resins

The preparation of waterborne modified epoxy resins typically involves the following steps:

1. Selection of base resin: Choose an appropriate epoxy resin as the matrix.
2. Functional group modification: Introduce specific functional groups (e.g., epoxide groups) via chemical reactions to enhance compatibility with aqueous media.
3. Physical dispersion: Disperse the modified epoxy resin into water using methods like grinding or ultrasonic treatment to form a stable emulsion or suspension.
4. Adjustment of properties: Fine-tune viscosity and solid content to meet application requirements.

III. Applications of Waterborne Modified Epoxy Resins

1. Coatings Industry: Widely used in automotive, marine, and industrial anti-corrosion coatings due to their eco-friendly properties. They provide strong adhesion, wear resistance, and chemical resistance while reducing hazardous emissions.
2. Electronic Encapsulation Materials: Employed in protecting electronic components (e.g., circuit boards and integrated circuits) due to their superior electrical insulation and mechanical strength.
3. Composites: Mixed with fibers or fillers to fabricate composites with exceptional mechanical performance, applied in aerospace, sports equipment, and other fields.
4. Construction Industry: Utilized in waterproof coatings, adhesives, and sealants to enhance durability and safety of buildings.
5. Medical Devices: Leveraged for manufacturing medical instruments and artificial organs due to their biocompatibility and non-toxicity.

IV. Future Trends of Waterborne Modified Epoxy Resins

With growing global environmental awareness and advancements in green chemistry, waterborne modified epoxy resins hold promising market potential. Future research will focus on:

• Improving performance metrics such as thermal resistance, UV resistance, and cost efficiency.
• Developing novel functional resins and additives to meet specialized application demands.

As an innovative material, waterborne modified epoxy resin dispersions have resolved environmental issues associated with traditional epoxies while opening new avenues in material science. With continuous technological progress and increasing demand, these dispersions are poised to play an increasingly vital role in future industrial and construction applications.