The Synergistic Toughening and Strengthening Effects of Cork Particles and Nanocellulose on Rosin-Based Epoxy Resin

Sun, Jingrong; Bai, Jinmeng; Li, Jingjing

doi:10.3390/polym14235064

Cited by 4 publications

(2 citation statements)

References 41 publications

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“…For instance, Sun Jingrong et al [43] incorporated cork particles and nanocellulose into rosin-based epoxy resin without altering the composition. The impact toughness results indicate a synergistic toughening effect of nanocellulose and cork particles on the resin.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of an Epoxy Toughening Curing Agent through Modification of Terephthalic Acid Sludge Waste

Fu,

Kong,

et al. 2024

Coatings

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Purified terephthalic acid (PTA) is widely used as a chemical raw material, with its production process resulting in significant compounds that generate a substantial amount of sludge waste annually. These compounds are known to possess active hydrogen. Utilizing this property, a novel approach for the treatment of PTA sludge waste was developed for its modification and re-use. This study focuses on the preparation of epoxy curing agents using PTA sludge-tank material. The modification of PTA sludge-tank material is achieved by using the one-pot method to investigate the toughening effect of home-made curing agents on epoxy resins and compare them with commercially available curing agents, and to analyze the mechanism of the structure of the curing agent on the material. The results showed that while the tensile strength of the experimental group was generally lower than that of the control group, the impact strength was significantly higher. Additionally, the hardness and tensile strength of the materials gradually decreased with an increase of the amount of hardener, while the elongation at break and impact strength increased. Notably, at a hardener amount of 35%, the elongation at break increased by 3.89%, and the tensile strength and impact strength reached 10.13 MPa and 42.86 kJ m−2, respectively, demonstrating excellent toughness and strength characteristics. These findings testified the feasibility of modifying PTA sludge waste to prepare an epoxy toughening curing agent is not only feasible, but also significantly enhances the material’s toughness.

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Section: Introductionmentioning

confidence: 99%

Synthesis of an Epoxy Toughening Curing Agent through Modification of Terephthalic Acid Sludge Waste

Fu,

Kong,

et al. 2024

Coatings

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“…Simple strategies may also be employed for the improvement of the mechanical response of epoxy and its composites, such as the use of fillers. Some examples include the use of inorganic particles, such as nano clays, cork particles [ 6 , 7 , 8 ] and nanoparticles, such as carbon nanotubes [ 9 ], graphene and its derivatives [ 10 ], and nanocellulose [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Imidazolium Ionic Liquids as Compatibilizer Agents for Microcrystalline Cellulose/Epoxy Composites

et al. 2023

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Four imidazolium-based ionic liquids (IL; 1-butyl-3-methylimidazolium chloride, 1-carboxymethyl-3-methylimidazolium chloride, 1,3-dicarboxymethylimidazolium chloride and 1-(2-hydroxyethyl) -3-methylimidazolium chloride) were tested as compatibilizers of microcrystalline cellulose (MCC). Subsequently, ethanolic IL solutions were prepared; MCC was mixed, and the mixtures were left to evaporate the ethanol at ambient conditions. These modified MCC were characterized and applied as reinforcements (5.0 and 10 phr) in an epoxy resin aiming to manufacture biobased composites with enhanced performances. The IL did not significantly modify the morphological and structural characteristics of such reinforcements. Regarding the thermal stability, the slight increase was associated with the MCC-IL affinity. The IL-modified MCC-epoxy composites presented improved mechanical responses, such as flexural strength (≈22.5%) and toughness behavior (≈18.6%), compared with pure epoxy. Such improvement was also obtained for the viscoelastic response, where the storage modulus at the glassy state depended on the MCC amount and IL type. These differences were associated with stronger hydrogen bonding between IL and epoxy hardener or the IL with MCC, causing a “bridging” effect between MCC and epoxy matrix.

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Research on toughening of in situ polymerized polyacrylate resin for liquid composite molding

Zhu,

Li,

Jin

et al. 2024

Polymer Composites

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Thermoplastic polyacrylate resin, which can be polymerized in situ, has a broad application prospect. Addressing the issue of poor toughness of polyacrylate resin, a toughening method involving in situ polymerization of polyacrylate resin for liquid composite molding was presented in this paper. KH570‐modified silica nanoparticles were used as reinforcement. The study focused on the surface modification's impact on the dispersion stability of the nanoparticle suspension, the effect of nanoparticles on the reaction, and the mechanical properties of the resin. The results showed that the contact angle between modified‐silica and acrylate resin decreased from 79.3° to 9.96°, and the stability of the suspension was increased by 34.8%. With the increase of silica nanoparticles, the reaction speed of the resin initially decreased and then increased. This was due to the influence of KH570 on the surface of the nanoparticles and the changes in resin viscosity caused by the nanoparticles. The mechanical properties of polymerization products first increased and then decreased. When nanoparticles mass ratio of nanoparticle to resin was 5:100, the elongation at break was increased by 94.9%, the impact strength was increased by 287%. This paper provided some ideas for high‐performance industrial application of high‐performance in situ polymerization of polyacrylate resin.Highlights The thermoplastic polyacrylate resin that can be formed by liquid composite molding. A method for improving the toughness of resin used in liquid composite molding. Nanosilica modified with KH570 interferes with the reaction of acrylate resin. The nanosilica changes the crack propagation path.

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The Synergistic Toughening and Strengthening Effects of Cork Particles and Nanocellulose on Rosin-Based Epoxy Resin

Cited by 4 publications

References 41 publications

Synthesis of an Epoxy Toughening Curing Agent through Modification of Terephthalic Acid Sludge Waste

Synthesis of an Epoxy Toughening Curing Agent through Modification of Terephthalic Acid Sludge Waste

Imidazolium Ionic Liquids as Compatibilizer Agents for Microcrystalline Cellulose/Epoxy Composites

Research on toughening of in situ polymerized polyacrylate resin for liquid composite molding

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