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、Composites With Epoxy‐Modified Waterborne Polyurethane

This research introduced a range of epoxy‐modified waterborne polyurethane (WEPU) sizing agents to improve both the mechanical performance and interfacial properties of composites.

3、Journal of Applied Polymer Science

This research introduced a range of epoxy-modified waterborne polyurethane (WEPU) sizing agents to improve both the mechanical performance and interfacial properties of composites.

4、Study on the Synthesis and Properties of Waterborne Polyurea Modified

In this study, epoxy-modified waterborne polyurea (WPUAE) emulsions were prepared using epoxy resin as a modifier. Fourier transform infrared spectroscopy (FT-IR) showed that E44 was successfully introduced into the molecular chain of WPUA.

5、Synthesis of poly (propylene carbonate) diol

In order to improve the corrosion resistance of waterborne polyurethane, a series of waterborne polyurethane emulsions were synthesized by modifying waterborne polyurethane with ring-opening epoxy resin.

Waterborne Epoxy Resin–Polyurethane–Emulsified Asphalt: Preparation and

The results show that waterborne polyurethane can effectively improve the flexibility of emulsified asphalt with a high content of waterborne epoxy resin. WEPEA exhibited excellent bonding strength, crack resistance and anti-impact properties, adhesion to aggregates, and water stability.

Toughness modification of waterborne epoxy emulsified asphalt by

In order to solve poor performance at low-temperature of w-EA, waterborne polyurethane (w-PU) is used as a toughening agent to modify waterborne epoxy emulsified asphalt (w-PUEA).

Study on preparation of epoxy resin modified waterborne

The traditional single polyurethane emulsion has the disadvantages of poor water resistance and heat resistance.The most effective method is to modify it to enhance the performance of the polyurethane emulsion adhesive and make it more widely used.Controlling the isocyanate index (R value) of 3.5,polypropylene glycol (PPG1000) and ...

Synthesis and Characterization of Epoxy Resins

On this basis, epoxy resin E-44 was introduced to modify the polyurethane prepolymer, and epoxy resin modified waterborne polyurethane emulsion was obtained.

Development of waterborne epoxy

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

In the field of modern material science, epoxy resins and polyurethane resins stand as two critical synthetic polymers, each with unique properties and widespread applications. As environmental awareness intensifies, traditional solvent-based epoxy and polyurethane resins face restrictions due to their volatile organic compound (VOC) emissions. Consequently, waterborne epoxy-modified polyurethane resin has emerged as a popular choice in industrial and construction sectors, offering low VOC emissions, excellent mechanical properties, and ease of processing. This article explores the properties, applications, and development prospects of waterborne epoxy-modified polyurethane resin.

1. Basic Concept and Composition

Waterborne epoxy-modified polyurethane resin is a composite material using water as a solvent, combining the high strength of epoxy resin with the flexibility of polyurethane. Structurally, it primarily consists of an epoxy resin matrix, polyurethane prepolymer, and a waterborne curing agent. The epoxy matrix provides strong adhesion and chemical stability; the polyurethane prepolymer ensures elasticity and flexibility; and the waterborne curing agent enables uniform dispersion and rapid curing in an aqueous medium.

2. Physical and Chemical Properties

Physical Properties

The resin exhibits outstanding abrasion resistance, impact resistance, and chemical resistance. Its hardness, tensile strength, and tear strength meet diverse application requirements. Additionally, its good flowability and moldability result in excellent processability, suitable for various shaping techniques.

Chemical Properties

Compared to traditional epoxy or polyurethane resins, waterborne epoxy-modified polyurethane resin has significantly lower VOC emissions, making it more environmentally friendly. Its chemical stability is also enhanced, demonstrating better resistance to ultraviolet (UV) radiation and environmental degradation.

3. Application Fields

Industrial Applications

In industries such as automotive manufacturing, aerospace, and electronics, waterborne epoxy-modified polyurethane resin is widely used in high-performance coatings, adhesives, and sealing materials. These products require exceptional mechanical properties, temperature resistance, and chemical corrosion resistance, all of which are satisfied by this resin.

Construction Applications

In construction, the resin is employed in waterproof coatings, sealants, and tile adhesives. These products offer strong adhesion, flexibility, and effective moisture protection, extending the lifespan of buildings.

4. Development Trends

Driven by technological advancements and stricter environmental standards, the evolution of waterborne epoxy-modified polyurethane resin focuses on:

• Eco-Friendly Material Innovation: Using bio-based or recycled raw materials to further reduce VOC emissions and meet stringent environmental regulations.
• Performance Optimization: Improving comprehensive properties through formulation and process enhancements, such as increased temperature and weather resistance.
• Multifunctionalization: Developing materials with additional capabilities, like self-healing or smart sensing, to address emerging market demands for high-performance materials.

As a novel eco-friendly material, waterborne epoxy-modified polyurethane resin boasts broad application prospects in future industrial and construction sectors due to its superior performance and environmental benefits. With continuous technological progress and market maturation, this material is poised for expanded adoption and growth.