Effects of interface bonding on the macro-mechanical properties of microcapsule/epoxy resin composites

Designing Schiff-Based Hyperbranched Polysiloxane for Simultaneously Enhancing Epoxy Resin with Mechanical Properties, Thermal Stability, and Recyclability

“…Epoxy resins are widely utilized in various industries due to their excellent processability, high strength, good dielectric properties, and chemical stability. − However, the inherent brittleness of cured epoxy resins, attributed to their highly cross-linked network, has prompted research into effective methods for toughening these resins. − Despite promising results in toughening epoxy resins through the incorporation of second phases such as rubber elastomers, thermoplastic materials, liquid crystal polymers, and block copolymers, the challenge lies in minimizing the reduction in thermal stability and processability as a result of these modifications. − In the context of modifying epoxy resins, researchers have explored the use of hyperbranched polymers as modifiers due to their unique branched topologies, abundant functional terminal groups, and flexible designability. − Various studies have investigated the impact of incorporating hyperbranched polymers into epoxy resins. For instance, Pan et al synthesized an epoxy-terminated hyperbranched polysiloxane (EPTS-12) for toughening epoxy resins through a silylation reaction.…”

One-Step Synthesis of Functionalized Microcapsules with Excellent Dispersibility for Efficient Self-Healing and Anticorrosion Coatings

“…Currently, numerous studies have been conducted to enhance the dispersibility of microcapsules through two primary methods: the preparation of bilayer microcapsules and microcapsule surface modification. − The preparation of bilayer microcapsules necessitates depositing a polymer layer rich with reactive groups onto the surface of a single-layer microcapsule, thereby enhancing the compatibility between the microcapsule and the resin matrix. − Li et al deposited a layer of hydroxyl- and amine-rich polydopamine (PDA) onto the surface of polyurethane (PUF) microcapsules to create PUF/PDA bilayer microcapsules. The hydroxyl and amino groups on the surface of polydopamine significantly enhanced the compatibility of microcapsules with epoxy resins, leading to improved dispersibility of microcapsules in the coating and improved self-healing properties and corrosion resistance of the coatings .…”

Incorporating paraffin@SiO2 nanocapsules with abundant surface hydroxyl groups into polydimethylsiloxane to develop composites with enhanced interfacial heat conductance for chip heat dissipation

“…For instance, paraffin@poly-(styrene-methyl methacrylate) microcapsules 13 and paraffin@poly-urea microcapsules 14 were mixed with silicone rubber to prepare phase change composites, respectively, and the paraffin@melamine-formaldehyde microcapsules were employed to fabricate an epoxy based phase change composite. 15 However, phase change capsules with organic shells suffer from low thermal conductivity. Decoration with inorganic nanomaterials could make an improvement in the thermal conductivity of the phase change capsules, 16,17 while these decorations inevitably result in the complexity of preparation processes.…”