1、Novel UV

In this present work, however, the use of reactive monomers containing carbon‑carbon triple bonds to react with epoxy resin was proposed to synthesize unsaturated resins modified with alkyne, and then to explore the potential applicability of alkyne groups in photocurable resins.

2、Eco

To address these issues, in this study, we reported a facile and green approach for preparing epoxy-terminated polyurethane (EPU)-modified epoxy resins with different EPU contents. It was found that the toughness of the epoxy resin was significantly improved after the addition of EPU.

3、A novel photocurable modified epoxy resin for high heat resistance

Compared with the system that uses acrylic acid to open epoxy group and the secondary hydroxyl group reacting with unsaturated anhydride, up to 1.5 times double bonds were potentially introduced. The structure of the resins was characterized by FT-IR and 1 H-NMR.

Research on Properties of Silicone

Based on this, the paper selects bisphenol, an epoxy acrylate, as the matrix and uses chemical grafting to study the heat resistance, mechanical properties, and micromorphology of the modified epoxy resin.

Epoxy Resin Modified Unsaturated Resins

To address these issues, researchers have developed a modification method that combines epoxy resin with unsaturated resins, creating a novel material that retains the advantages of epoxy resin while overcoming its drawbacks.

Research for Epoxy Modified Polyurethane Resin Technology

The epoxy modified polyurethane resin can be prepared under the catalyst action of isocyanate monomer and linear thermoplastic polyurethane elastomer and bisphenola epoxy resin.

Polyurethane modified epoxy acrylate resins containing ε

Epoxy acrylate resins modified by polyurethane with excellent mechanical properties play a crucial role in UV-curable coatings, but the high viscosity limits their further applications in 3D printing, electronic packaging material.

Structure and properties evaluation of epoxy resin modified with

The present work investigates the properties and structure of epoxy resin (EP) modified with polyurethane (PUR). This latter was prepared using polymeric diphenylmethane diisocyanate and polyethylene glycol (PEG 400) or poly-oxypropylene diol with different molecular weights (POPD 1002 and POPD 2002).

THE SYNTHESIS OF MODIFIED EPOXY RESINS

Among these bio-based epoxy resins, plant oil-based epoxy resins lead to weak heat resistance due to their non-aromatic chain structure, leading to the formation of mechanical and other performance characteristics, limiting their industrial applications.

A new type of unsaturated polyester resin with epoxy functionalized

It was found that E-SiO 2 grafted onto the DFA/UPR backbone by chemical bonds, and the material exhibited ductile fracture with Si element on the fracture surface.

Epoxy resin (Epoxy Resin) is a high-performance thermosetting polymer known for its excellent mechanical properties, chemical resistance, and electrical insulation. In modern industry, epoxy resin is widely used in the production of composite materials, particularly in aerospace, automotive, electronics, and construction. its brittleness and processing challenges limit its application in certain fields. To address these issues, researchers have developed a modification method that combines epoxy resin with unsaturated resins, creating a novel material that retains the advantages of epoxy resin while overcoming its drawbacks.

Unsaturated resins, such as polyamide (PA), polyester (PET), and polyurethane (PU), exhibit good flexibility and processability, making them ideal choices for composite manufacturing. By integrating epoxy resin with unsaturated resins, the mechanical properties of composites can be significantly improved while maintaining superior electrical insulation and corrosion resistance.

The process of modifying epoxy resin with unsaturated resins typically involves the following steps:

1. Mixing: Epoxy resin and unsaturated resin are blended in specific ratios. This can be achieved through mechanical stirring, ultrasonic treatment, or high-speed shearing to ensure uniform mixing.

2. Curing: The mixed resin must cure under controlled conditions. This often involves adding catalysts, initiators, or other additives to accelerate the reaction. Curing parameters, including temperature, pressure, and time, directly impact the final material’s mechanical and physical properties.

3. Post-Treatment: After curing, the composite may undergo post-processing steps such as sanding, polishing, or coating to achieve the desired surface quality and appearance.

Advantages of Epoxy Resin Modified Unsaturated Resins:

1. Enhanced Mechanical Properties: The combination with unsaturated resins significantly improves the strength and hardness of the composite, making it better suited for heavy loads and impact resistance.

2. Improved Processability: The modified composite exhibits greater flexibility and plasticity, reducing processing difficulty during shaping.

3. Cost Efficiency: While epoxy resin is relatively expensive, modification techniques can lower material costs while maintaining or enhancing performance.

4. Environmental Friendliness: The production process generates less waste, minimizing environmental impact.

Challenges of Epoxy Resin Modified Unsaturated Resins:

1. Cost Issues: The high cost of epoxy resin may result in modified composites remaining more expensive than traditional unsaturated resin composites.

2. Performance Balancing: Finding the optimal ratio to balance the benefits of epoxy and unsaturated resins is critical to avoid compromising performance.

3. Application Limitations: Despite its advantages, the material may still face limitations in extreme environments or specific applications.

In the future, advancements in technology and innovation will expand the applications of epoxy resin-modified unsaturated resins. Further research and development could resolve cost, performance, and environmental concerns, enabling this composite material to better meet industrial and market demands.