Jiyi Li¹, Zongqi Xiong², Xinxin Cao^3,*

Structural Durability & Health Monitoring, Vol.20, No.5, 2026, DOI:10.32604/sdhm.2026.083367 - 24 August 2026

Abstract In response to the common interlaminar shear and delamination defects in the pavement of long-span steel bridges, this paper investigates the interface fatigue failure mechanism of the “SMA-13 + epoxy resin + orthotropic steel plate” system. Static direct shear tests indicate that the optimal application rate of epoxy resin is 1.5 kg/m², and that elevated temperatures cause the failure mode to transition from brittle fracture to ductile creep. Based on full-factorial dynamic shear fatigue tests, this study discarded subjective empirical thresholds and innovatively proposed the “geometric tangent method” to quantitatively define fatigue life. Analysis of variance More >

Bungo Ochiai^*, Yuji Kamachi, Yoshimasa Matsumura^#

Journal of Polymer Materials, Vol.43, No.2, 2026, DOI:10.32604/jpm.2026.078288 - 30 June 2026

Abstract Epoxy-acrylate hybrid systems are extensively employed in adhesives, coatings, and composites; however, conventional formulations often rely on toxic monomers such as glycidyl methacrylate (GMA). This study introduces a sequentially curable epoxy-acrylate hybrid system based on novel hybrid monomers containing both glycidate and acrylate groups, synthesized via the partial oxidation of a diacrylate. Radical polymerization of monomers with a glycidate content exceeding 80% yielded viscous prepolymers consisting of epoxy-functionalized polymers and residual low-molecular-weight glycidates. These prepolymers were subsequently cured with amines at ambient temperature to form crosslinked networks. The gel fraction exceeded 90% when cured with More > Graphic Abstract

Pavlo Bekhta^1,2,*, Iryna Lytvyn¹

Journal of Renewable Materials, Vol.14, No.5, 2026, DOI:10.32604/jrm.2026.02026-0035 - 28 May 2026

Abstract The modification of melamine–urea–formaldehyde (MUF) adhesives with lignosulfonates (LS) represents a promising strategy for developing more sustainable wood-based panels. However, the influence of the counterion type remains poorly understood. In this study, the effect of lignosulfonate counterions on adhesives performance and properties of MUF-bonded particleboards was investigated, with a focus on sodium (NaLS) and magnesium (MgLS) lignosulfonates incorporated at 2.5%, 5.0%, and 7.5%. Adhesives performance was characterized by measuring dry solids content, dynamic viscosity, gelation time, and pH. The produced particleboards were evaluated in terms of density, bending strength, modulus of elasticity, internal bond strength… More > Graphic Abstract

Guoguan Wu^1,2, Baipei Liu^1,3, Dawei Jiang^1,2,*, Haorui Yu¹, Jiayu Fu^1,2, Chengze Yu¹, Hanbin Wang¹, Miaojun Xu^1,2,*, Zijian Wu⁴, Bin Li^1,2,*

Journal of Polymer Materials, Vol.43, No.1, 2026, DOI:10.32604/jpm.2026.075384 - 03 April 2026

Abstract Epoxy resins are extensively employed in the construction, electronics, automotive, and aerospace industries owing to their outstanding mechanical strength, chemical resistance, and electrical insulation. However, their intrinsic flammability, poor wear resistance, and hydrophilicity significantly restrict broader applications. To address these challenges, a novel multifunctional coating (CEOS-DOPO-PDMS) has been designed and fabricated via an NP-GLIDE approach. The system integrates 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) as a reactive phosphorus-based flame retardant, epoxy-terminated polydimethylsiloxane (EP-PDMS) as a hydrophobic segment, and cycloaliphatic epoxy-functionalized oligosiloxanes (CEOS) as a cross-linking co-reactant. The resulting CEOS-DOPO-PDMS hybrid precursor was blended with bisphenol A diglycidyl ether (DGEBA)… More > Graphic Abstract

Mingyan He^1,2, Jiayu Fu^1,2, Fangyu Guo^1,2, Dawei Jiang^1,2,*, Ting Yang^1,2, Miaojun Xu^1,2,*, Zijian Wu³, Bin Li^1,2,*

Journal of Polymer Materials, Vol.43, No.1, 2026, DOI:10.32604/jpm.2026.075379 - 03 April 2026

Abstract Phenolic resins are widely used in thermal protection, yet achieving simultaneous improvement in thermal stability and mechanical strength remains challenging. In this work, a vinyl-modified silicone resin (VMTQ) was synthesized and incorporated into a boron phenolic resin (BPF) matrix. Three composite ceramic fillers, Al₂O₃–SiO₂–ZrO₂ (ASZ), Al₂O₃–SiO₂–TiO₂ (AST), and Al₂O₃–SiO₂–MgO (ASM), were further introduced to construct a multi-oxide synergistic reinforcement system. Thermogravimetric analysis shows that the maximum decomposition rate decreases by 0.2–0.3%·min⁻¹, while the ASM/V3/BPF-3 composite exhibits a 74.53% increase in char yield at 800°C and a 163.3°C increase in initial decomposition temperature, confirming its significantly enhanced thermal More >

Sultan Binalrimal^1,*, Abdullah M. Alshehri², Mohammed Mustafa^2,*, Ali Robaian Alqahtani², Rasha Alharthi³, Basil Almutairi⁴

Journal of Polymer Materials, Vol.43, No.1, 2026, DOI:10.32604/jpm.2026.075142 - 03 April 2026

Abstract Composite resin restorations are routinely exposed to acidic and chromogenic beverages that may alter their surface integrity over time. This in-vitro study evaluated the surface roughness behavior of two universal single-shade (Unishade) composites and two conventional multi-shade composites following immersion in commonly consumed staining solutions and assessed whether repolishing could restore smoothness after degradation. A total of 120 standardized disc specimens were fabricated and allocated to four material groups, with each group subdivided into distilled water, cola, and coffee immersion subgroups. Surface roughness was recorded at baseline, after one week, after one month, and following a… More >

Awanda Wira Anggini^1,2, Rita Kartika Sari^1,*, Dede Hermawan¹, Muhammad Iqbal Maulana², Wahyu Hidayat³, Bora Jeong⁴, Muhammad Adly Rahandi Lubis^2,5,*

Journal of Renewable Materials, Vol.14, No.3, 2026, DOI:10.32604/jrm.2025.02025-0114 - 25 March 2026

Abstract Recent advancements in developing tannin-based non-isocyanate polyurethane (NIPU) resins have unlocked new possibilities for sustainable and eco-friendly wood adhesives. Unlike conventional polyurethane, NIPUs eliminate hazardous isocyanates, offering safer alternatives for industrial applications. Tannin, a naturally occurring polyphenolic compound, plays a pivotal role in enhancing these resins’ fire-resistance and super-hydrophobic properties. This review highlights key developments in synthesizing tannin-based NIPU, focusing on various polymerization techniques such as polyaddition, polycondensation, ring-opening polymerization, and rearrangement. These strategies contribute to improved mechanical strength, thermal stability, and resistance to water absorption. Recent studies demonstrate that tannin-based NIPU adhesives meet or… More > Graphic Abstract

Priscilla Yamilhet Montes-Orona¹, Mercedes Georgina Ramírez-Aragón², Isaela Villalpando-De La Torre³, Urbano Nava-Camberos¹, Jared Ceniceros-García¹, José Luis García-Hernández^1,*

Phyton-International Journal of Experimental Botany, Vol.95, No.2, 2026, DOI:10.32604/phyton.2026.074379 - 28 February 2026

Abstract Mexican oregano (Lippia graveolens Kunth) is an aromatic species of high culinary and medicinal relevance. In Mexico, more than 40 taxa with characteristic aroma and flavor are commercially recognized as oregano, with L. graveolens being the most widely distributed and economically important. Despite its relevance, few domesticated or semi-domesticated cultivars exist, and wild populations remain the main source of raw material, raising concerns regarding sustainability and quality standardization. The essential oil and oleoresins of L. graveolens possess recognized bioactivity, including antioxidant, antifungal, antibacterial, and anti-inflammatory properties, largely attributed to phenolic compounds such as thymol and carvacrol. Given the… More >

Jia Liu, Yuwu Zhang^*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.33, No.2, pp. 1-1, 2025, DOI:10.32604/icces.2025.011553

Abstract The rigidity of the resin matrix is a critical factor affecting the impact resistance of composites [1]. However, the intrinsic relationship between resin matrix rigidity and ballistic performance remains insufficiently understood. To reveal the influence mechanisms of resin matrix rigidity on ballistic performance, this study compares the ballistic limits of PBO-140, PBO-200, Aramid III, and Aramid II fiber reinforced composites with resin matrices of different rigidities (epoxy resin, PX90, and PX30) through ballistic impact tests. The experimental results show that, the ballistic limit of composites with PX90 resin is higher than that of composites with… More >

Minjie Li¹, Wanhao Shi¹, Dingqian Yang², Manman Yuan², Jiabao Du², Xuandong Liu^1,*

Energy Engineering, Vol.122, No.10, pp. 4297-4312, 2025, DOI:10.32604/ee.2025.066337 - 30 September 2025

Abstract In Xinjiang, China, Oil-immersed paper bushings used in reactors are highly susceptible to discharge breakdown faults due to drastic fluctuations in environmental and oil temperatures. To mitigate this problem, oil-free and explosion-proof epoxy resin-impregnated paper (ERIP) bushings are recommended as replacements. This study develops a multi-physics(electric-thermal-fluid) coupling model for 750 kV high voltage reactors ERIP bushings. The model aims to comprehensively assess their thermal and electrical performance under extreme ambient temperatures ranging from −40°C to 90°C and oil temperatures varying from −10°C to 90°C. The results demonstrate that the bushing temperature rises consistently with increases… More >