1、Advances in Toughening Modification Methods for Epoxy Resins: A

Through a detailed analysis of experimental studies, this paper highlights the effectiveness of various toughening strategies and suggests future research directions aimed at further optimizing epoxy resin toughening techniques for diverse industrial applications.

2、Toughening epoxy resins: Recent advances in network architectures and

To achieve a synergistic enhancement of strength and toughness, recent efforts have focused on engineering multiscale toughening networks and leveraging rheological techniques to elucidate their structural evolution.

3、Research status of mechanical modification of epoxy resin

Researchers worldwide are working on enhancing its mechanical properties, like toughness, through various techniques like adding nanomaterials like carbon nanotubes or silica, using toughening agents, and modifying its surface. By controlling these materials well, we can make epoxy composites stronger and more durable.

4、Research progress on toughening modification of epoxy resin

Epoxy resin is a polymer material known for its high strength and rigidity,good chemical stability,and ease of processing.However,its brittleness seriously limits its applications.To address the toughening of epoxy resin,domestic and foreign scholars have conducted extensive research.The article mainly introduced the research progress on the ...

5、Toughening Epoxy Resin Using a Liquid Crystalline Elastomer for

Herein, an LCE named poly [4,4′-bis (6-hydroxyhexyloxy)biphenyl phenylsuccinate] (PBDPS) was utilized to construct robust EP thermosets with optimal toughening efficiency and anomalous reinforcement by controlling over the formation of multiscale phase structures in the matrix over broad sizes ranging from nano- to micron-scale while increasing ...

Advances in Toughening Modification Methods for Epoxy Resins: A

This work provides a comprehensive review of the recent advancements in the toughening modification methods for epoxy resins.

Enhancing the mechanical strength and toughness of epoxy resins with

All modifiers showed toughening effects on epoxy resins, conforming the synergistic effect of nano-POSS and rubbery linear chains. Among them, samples with a higher proportion of conjugated segments have better toughening effects, which are related to the reactive hydroxyl groups.

Enhancing toughness of epoxy resin through chain extending and end

Toughening an epoxy resin without compromising its mechanical strength and thermal property remains a significant challenge. In this study, bisphenol A (BPA) served as a chain extender, whereas phenol functioned as an end-capping agent, both of which were intended to tune the properties of E55 epoxy resin (EP).

Toughening of Epoxy Systems by Adding Three Toughness Modifiers as

This study aims to enhance the toughness of fragile epoxy resin by incorporating natural rubber (NR) and commercial plastics (PMMA and ABS). Two groups of polymeric blends were formulated: Epoxy/NR/ABS/PMMA.

Journal of Applied Polymer Science

Effective toughening of epoxy resins with epoxy-terminated hyperbranched polyethers prepared from two types of polyhydroxy monomers.

Research Progress on Epoxy Resin Toughening Modifiers

Abstract: Epoxy resins, due to their excellent mechanical properties, electrical insulation, and chemical stability, are widely used in aerospace, automotive manufacturing, electronics, and construction. their brittleness limits applications in extreme environments, making toughening modification critical. This paper reviews advances in epoxy resin toughening modifiers, including traditional methods and cutting-edge technologies.

Keywords: Epoxy resin; Toughening modification; Composite materials; Nanotechnology; Polymer matrix

Introduction Epoxy resin, a thermosetting polymer, exhibits superior adhesive strength, electrical insulation, and mechanical properties. its brittleness and poor impact resistance restrict its use in complex structural components and high-performance applications. Enhancing toughness via modifiers has become a research focus.

Traditional Toughening Methods

1. Filler Reinforcement Fillers like calcium carbonate, diatomite, and talc are commonly added to epoxy resins. These reduce fracture toughness while improving impact resistance. Despite simplicity, compatibility issues between fillers and resins may compromise performance.

2. Blending Toughening Blending epoxy resins with high-toughness materials (e.g., rubber, thermoplastic elastomers [TPEs], carbon fibers) creates composites with enhanced toughness. This approach leverages synergistic properties of diverse materials.

3. Microencapsulation Technology Microcapsules encasing toughening agents are dispersed in the resin matrix. Upon external force, capsules rupture, releasing agents to transfer stress and inhibit crack propagation. This method improves toughness and environmental adaptability.

4. Graft Copolymerization Introducing grafted chains onto epoxy molecular structures via copolymerization tunes toughness. Adjusting graft ratios and types achieves uniform mechanical properties and improved resilience.

Cutting-Edge Modification Technologies

1. Nanotechnology Nanoparticles (e.g., carbon nanotubes, graphene, nano-oxides) significantly enhance toughness by bridging matrix defects,得益于 their high specific surface area and mechanical strength.

2. Self-Healing Technology Additives with self-healing capabilities enable autonomous repair of damage, restoring material performance. This suits applications requiring frequent maintenance, such as aerospace and automotive industries.

3. Bio-Based Toughening Agents Bio-based agents derived from natural sources (e.g., starch, chitosan, cellulose) offer biodegradability, eco-friendliness, and cost-effectiveness. Their integration supports sustainable development goals.

Epoxy resin toughening is an interdisciplinary field. Advances in nanotechnology, bio-based materials, and green chemistry have driven innovation. Future research will explore novel modifiers and methods to meet evolving engineering demands.