1、Toughening of Infusible Epoxy Resins by Core/Shell Nanoparticles Plus a

Abstract To develop high-performance epoxy resins (EP) that can be used to produce aircraft primary structure composite parts via vacuum-assisted resin infusion technology (VARI), low resin viscosity and high fracture toughness requirements must be met as well as maintaining the usual thermomechanical properties.

2、Core

This study addresses this dilemma through an innovative interfacial engineering approach, developing a core-shell structured organic-inorganic hybrid aluminum phenylphosphinate (PADP@BM) via chemical modification of boehmite nanoparticles with phenylphosphinic acid.

3、Toughening of epoxy resin systems using core–shell rubber

Researchers first focused on the use of core–shell rubber particles containing different cores and shells. They then used core–shell rubber particles along with rigid fillers such as silica to offset the slight diminish in mechanical properties, as well as the glass transition temperature.

Building effective core/shell polymer nanoparticles for e

In this work, by carefully controlling the composition and morphology of nanoparticles, a credible theory is proposed for the first time to quantitatively explain and predict the toughening effect and the performance of core/shell nanoparticles.

Impact Resistance Enhancement by Adding Core

The influences of core-shell particle contents on the tensile and impact strength of the epoxy thermosets modified with amino-terminated hyperbranched polymer were discussed in detail.

A Review of Toughening Epoxy Resin Matrix by Core

Based on an explanation of the different toughening mechanisms of EP, this article introduces the toughening mechanism, main types, and preparation methods of CSP toughening agents.

A systematic study on the synergistic effects of MWCNTs and core–shell

Here, core–shell impact modifier particles (CSIMPs) and multiwalled carbon nanotubes (MWCNs) were used as reinforcing agents for improving the toughness and tensile properties of epoxy...

In situ formation of core–shell nanoparticles in epoxy resin via

Here, we report a new synthetic method of in situ RAFT dispersion polymerization in a mixture of ethanol/water/epoxy for the good dispersion of core–shell rubber particles in the epoxy resin (Scheme 1).

High

In the present work, an organic core-inorganic shell nanoparticle, poly (butyl acrylate)@SiO 2 (PBA@SiO 2), was innovatively prepared to simultaneously improve the toughness and other mechanical properties of epoxy resin at different temperatures.

Reactive Core

Herein, we designed a core-shell structured bottlebrush copolymer (BBP), which is composed of rubbery poly (butyl acrylate) (PBA) core and an epoxy miscible/reactive poly (glycidyl methacrylate) (PGMA) shell, as an epoxy toughening agent.

Epoxy resins, as high-performance thermosetting polymers, are widely utilized in aerospace, automotive manufacturing, electronics, and construction due to their excellent physicochemical properties, electrical insulation, mechanical strength, and dimensional stability. inherent limitations such as low fracture toughness, poor chemical resistance, and brittleness restrict their application under harsh conditions. To address these drawbacks, researchers have developed various modification methods, among which incorporating core-shell structured polymers into epoxy resins has emerged as a promising approach. This strategy not only enhances mechanical performance and thermal stability but also improves environmental resistance. This article reviews the research progress and application prospects of core-shell polymer-modified epoxy resins.

Research Progress in Core-Shell Polymer-Modified Epoxy Resins

Core-shell polymers are macromolecular materials with a distinct core-shell architecture, where an outer protective layer encapsulates an inner core material. This structure endows them with unique properties, including superior mechanical performance, chemical stability, and thermal resistance. By introducing core-shell polymers as modifiers into epoxy resins, the mechanical and thermal properties of the resulting composites can be significantly improved while retaining the original electrical insulation and dimensional stability.

Studies have shown that adding core-shell polymers markedly enhances the mechanical properties of epoxy resins. For instance, incorporating cores with high elastic moduli, such as polystyrene (PS) or polyether sulfone (PES), substantially increases the tensile and flexural strength of the epoxy matrix. Additionally, the crosslinking interaction between core-shell polymers and epoxy resins further strengthens the overall mechanical performance, improving durability and robustness.

The thermal stability of core-shell polymer-modified epoxy resins is particularly noteworthy. The core material typically exhibits high thermal resistance, while the shell provides protective barriers against degradation at elevated temperatures. This dual mechanism enables the modified epoxy resins to maintain stability under extreme temperature conditions, meeting demands for specialized applications.

Chemical stability is another advantage of core-shell polymer-modified epoxy resins. The core-shell structure effectively isolates the epoxy matrix from external chemicals, reducing reactivity and enhancing resistance to corrosive substances.

Application Prospects of Core-Shell Polymer-Modified Epoxy Resins

With increasing technological demands, core-shell polymer-modified epoxy resins hold broad potential across multiple fields:

• Aerospace: These materials can be used to manufacture aircraft and spacecraft components (e.g., engine parts, casings) that require high strength, thermal resistance, and chemical stability.
• Automotive Industry: They are suitable for producing automotive parts (e.g., body structures, chassis components) that demand durability, heat resistance, and longevity under complex operating conditions.
• Electronics: In electronic devices, they can serve as circuit boards or encapsulation materials, leveraging their electrical insulation and dimensional stability to ensure reliable and prolonged device performance.

As a novel material modification technique, core-shell polymer-modified epoxy resins demonstrate exceptional potential in modern industries. By leveraging the core-shell design, epoxy resins achieve enhanced mechanical performance, thermal stability, and chemical resistance, addressing the demands for advanced materials. Future research and technological breakthroughs may expand their applications, driving innovation across related sectors.