International Journal of Adhesion and Adhesives最新文献_第7页

Collagen biomodification and bond stability in dentin pretreated with natural galloylated agents 天然没食子酸盐预处理牙本质的胶原生物修饰和结合稳定性

IF 3.5 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives

Pub Date : 2025-11-07 DOI: 10.1016/j.ijadhadh.2025.104197

Talita Arrais Daniel Mendes , Samuel Chillavert Dias Pascoal , Maria Clara Ayres Estellita , Marcelo Victor Sidou Lemos , Israel Simon Andrade Costa , Edinaldo Gomes de Meneses Neto , Sérgio Lima Santiago , Juliano Sartori Mendonça

This in vitro study evaluated the effect of biomodifying agents - 0.1 % epigallocatechin-3-gallate (EGCG), 1 % tannic acid (TAN), 6.5 % grape seed extract (GSE), and distilled water (DW) - used as aqueous dentin pretreatments on dentin collagen and on the adhesive performance of composite resin restorations. Dentin specimens were pretreated actively for 60 s with solutions prepared in a 100 % distilled water solvent. The outcomes assessed were modulus of elasticity (ME) by the three-point bending test (n = 15); mass variation (MV%) (n = 15); and dentin bond strength to composite resin (n = 8), assessed via microtensile bond strength to composite resin along with fracture pattern analysis. Qualitative evaluations included Fourier-transform infrared spectroscopy (FTIR) (n = 3) and micropermeability testing (n = 3). Statistical analysis was conducted using two-way ANOVA followed by Tukey's post hoc test (p < 0.05). TAN group presented the highest ME values. For MV%, both EGCG and TAN exhibited significant mass gain compared to the other groups (p < 0.05), which remained stable after degradation. Regarding bond strength, only TAN and GSE preserved interface stability after six months, consistent with the hybrid layer quality observed in the micropermeability analysis. Failure modes differed significantly over time in the DW (p = 0.025) and EGCG (p = 0.002) groups. FTIR revealed stronger amide I and II peaks for TAN and GSE. It can be concluded that the tested natural agents are effective in collagen biomodification; however, only TAN and GSE sustained long-term resin–dentin bond stability.

本体外研究评估了生物改性剂——0.1%表没食子儿茶素-3-没食子酸酯（EGCG）、1%单宁酸（TAN）、6.5%葡萄籽提取物（GSE）和蒸馏水（DW）——作为牙本质水处理预处理对牙本质胶原蛋白和复合树脂修复体粘附性能的影响。牙本质标本用100%蒸馏水溶剂制备的溶液积极预处理60 s。通过三点弯曲试验评估的结果是弹性模量（ME）（n = 15）；质量变化（MV%）（n = 15）；牙本质与复合树脂的结合强度（n = 8），通过与复合树脂的微拉伸结合断裂模式分析来评估。定性评价包括傅里叶变换红外光谱（FTIR）（n = 3）和微渗透率测试（n = 3）。统计学分析采用双因素方差分析和Tukey事后检验（p < 0.05）。TAN组ME值最高。对于MV%， EGCG和TAN均表现出较其他组显著的质量增加（p < 0.05），降解后质量保持稳定。在结合强度方面，只有TAN和GSE在6个月后保持了界面稳定性，这与微渗透分析中观察到的杂化层质量一致。随着时间的推移，DW组（p = 0.025）和EGCG组（p = 0.002）的失效模式差异显著。FTIR显示TAN和GSE有较强的酰胺I和酰胺II峰。实验结果表明，所测天然制剂对胶原蛋白的生物修饰是有效的；然而，只有TAN和GSE维持了长期的树脂-牙本质结合稳定性。

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引用次数: 0

Effects of transverse impact on the residual strength of the page type CFRP adhesive joint 横向冲击对页型CFRP粘接接头残余强度的影响

IF 3.5 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives

Pub Date : 2025-11-07 DOI: 10.1016/j.ijadhadh.2025.104207

Mo Yang , Kang Guo , Jianan Xi , Jinkai Hu , Hao Xuan , Yuebin Zhou , Wen Zhang

Adhesive joints are critical components in modern engineering structures, their performance under impact loading conditions remains a significant challenge. This research proposed a novel page type adhesive joint, aiming to significantly enhance the residual strength of the planar joint after impact. Both finite element analysis and experimental test methods have been employed to study the transverse impact damage and residual strength of the page type adhesive joint. The finite element analysis model accurately predicts the damage evolution and residual strength of the joint, with experimental results showing good agreement. Furthermore, the tensile strength of single lap joints were contrasted with that of the page type joints. The results demonstrate that the page type adhesive joint exhibits superior residual strength compared to traditional single lap joint, with its advantages becoming more pronounced as impact energy increases. This study provides valuable insights into enhancing the impact resistance and residual strength of adhesive joints, offering a promising solution for improving the durability and reliability of composite structures in engineering applications.

粘结接头是现代工程结构中的关键部件，其在冲击荷载作用下的性能是一个重大挑战。本研究提出了一种新型的页式粘接接头，旨在显著提高平面接头在碰撞后的残余强度。采用有限元分析和实验测试相结合的方法，对页式粘接接头的横向冲击损伤和残余强度进行了研究。有限元分析模型对接头的损伤演化和残余强度预测较准确，与试验结果吻合较好。并对单搭接节点与页型节点的抗拉强度进行了对比。结果表明：页型粘接接头的残余强度优于传统的单搭接接头，且随着冲击能量的增大，其优势更加明显；本研究为提高粘接接头的抗冲击性和残余强度提供了有价值的见解，为提高工程应用中复合材料结构的耐久性和可靠性提供了有希望的解决方案。

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引用次数: 0

Role of the amine monomer in polymer/metal interaction: application to the DGEBA-DETA-TA6V system 胺单体在聚合物/金属相互作用中的作用：在dgeba - delta - ta6v体系中的应用

IF 3.5 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives

Pub Date : 2025-11-05 DOI: 10.1016/j.ijadhadh.2025.104201

Antoine Dubernard , Christophe Drouet , Jérôme Esvan , Diane Samélor , Olivier Marsan , Carole Thouron , Alessandro Pugliara , Maëlenn Aufray

This study provides an in-depth analysis of the DGEBA (Diglycidyl Ether of Bisphenol A.)-DETA (Diethylenetriamine)/TA6V alloy (Titanium 90 m%, Aluminum 6 m%, Vanadium 4 m%), aiming to comprehensively describe the interactions (term encompassing all events leading to a final state, commonly used in the field of calorimetry) governing the formation of the polymer-metal interphase, thus implying a region with properties (physico-chemical or thermal) distinct from those of the bulk polymer. By integrating multiple analytical techniques – including mixing microcalorimetry, DSC, TEM/STEM/EDX, Karl Fischer titration, NIR, UV–Vis spectrophotometry, and XPS – the mechanisms involved were further elucidated. Key findings include the kinetically favorable (40 °C) character of the DETA/TA6V interaction versus the polyaddition process itself, as well as the crucial role of the surface chemistry and structure of the Ti-based alloy substrate in determining active site availability, and finally the quantification of water formation during the interaction. Additionally, using an analytical UV–Vis methodology with hydrogen peroxide as complexing agent, the amount of dissolved titanium ions was titrated from the Ti-based substrate surface when contacted with DETA, and checked its dependence on surface properties and microstructure. XPS results suggest that amine/Ti complexes in the final polymer/TA6V system predominantly involve N-Ti-O bonding rather than N-Ti. By shedding light on the formation of interphases involving metal-amine surface complexes and chelates, this contribution is expected to offer valuable insights for both academic and industrial users of TA6V and epoxy-based formulations.

本研究提供了对DGEBA（双酚a二乙酸乙酯）-DETA（二乙烯三胺）/TA6V合金（钛90 m%，铝6 m%，钒4 m%）的深入分析，旨在全面描述控制聚合物-金属间相形成的相互作用（包括导致最终状态的所有事件的术语，通常用于量热学领域），从而意味着具有与本体聚合物不同的性质（物理化学或热）的区域。采用混合微量热法、DSC法、TEM/STEM/EDX法、卡尔费歇尔滴定法、近红外光谱法、紫外-可见分光光度法和XPS法等多种分析技术，进一步阐明了其作用机理。主要发现包括DETA/TA6V相互作用相对于多加成过程本身的动力学有利（40°C）特征，以及ti基合金衬底的表面化学和结构在决定活性位点可用性方面的关键作用，最后是相互作用过程中水形成的量化。此外，采用紫外可见分析方法，以双氧水为络合剂，滴定钛基基底表面与DETA接触时钛离子的溶解量，并检查其对表面性质和微观结构的依赖。XPS结果表明，在最终的聚合物/TA6V体系中，胺/Ti配合物主要是N-Ti- o键而不是N-Ti键。通过揭示涉及金属胺表面配合物和螯合物的界面相的形成，这一贡献有望为TA6V和环氧基配方的学术和工业用户提供有价值的见解。

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引用次数: 0

Epoxy-silane: a non-removable film pretreatment for “Galvanneal” 环氧硅烷：一种用于“Galvanneal”的不可去除的前处理膜

IF 3.5 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives

Pub Date : 2025-11-05 DOI: 10.1016/j.ijadhadh.2025.104204

Paola Pary , Pablo Seré , Cecilia Deyá

Non-removable pretreatments based on 3-glycidoxypropyltriethoxysilane (GPTE) were studied on galvannealed steel as corrosion protectors and adhesion promoters. Three concentrations of GPTE were tested. The silane coatings were characterized by cyclic voltammetry, linear polarization, electrochemical impedance spectroscopy and FESEM. The pretreatment that provided the best protection of the substrate was 20 % v/v GPTE solution. Pretreated panels were exposed in the 100 % humidity chamber and then painted using a water-based paint. Panels without pretreatment or unexposed were also painted. Painted panels were placed in the salt spray and in the humidity chambers. The presence of the silane does not modify the paint/substrate dry adhesion. The best results after exposure in the accelerated tests chambers were obtained with the painted panels pretreated with GPTE 20 % v/v, even those pretreated and exposed to the humidity chamber before painted had better results than painted galvanneal without pretreatment.

研究了以3-甘氧基氧丙基三乙氧基硅烷（GPTE）为基材对镀锌钢进行防腐蚀和促进附着力的不可去除预处理。检测三种浓度的GPTE。采用循环伏安法、线性极化法、电化学阻抗谱法和FESEM对硅烷涂层进行了表征。20% v/v的GPTE溶液对底物的保护效果最好。经过预处理的面板暴露在100%湿度的室内，然后用水性涂料涂漆。未经预处理或未暴露的面板也被涂漆。在盐雾室和湿度室中放置了涂漆的面板。硅烷的存在不会改变涂料/基材的干燥附着力。经GPTE 20% v/v预处理的涂漆板在加速试验箱中暴露后的效果最好，即使涂漆前经过预处理并暴露在湿室中的涂漆板也比未经预处理的涂漆后的镀锌板效果更好。

引用次数: 0

A temperature-dependent viscoelastic model for silicone adhesives with comparative verification via deep learning 基于深度学习的硅树脂黏合剂的温度依赖粘弹性模型

IF 3.5 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives

Pub Date : 2025-11-05 DOI: 10.1016/j.ijadhadh.2025.104203

Siyu He , Feixiang Tang , Shun Xue , Zhaoxu Zhou , Li Yang , Fanliang Li , Xiaoping Wang , Sheng Liu

Silicone adhesives with their excellent viscoelasticity and aging resistance are often widely used as interconnection materials in fields such as electronic packaging. However, due to the difference in thermal expansion coefficients, the packaging structure may experience adhesive failure caused by thermal stress. In this paper, a temperature-dependent viscoelastic model of silicone adhesives was developed to study the mechanical behavior changes of an adhesive and relevant parameter expressions were provided. Additionally, deep learning and FEA were employed for comparative verification of the model. The results indicate that both the viscoelastic model and the deep learning model used in this study can capture the trend of temperature's influence on the adhesive. Both models successfully capture the temperature-dependent variation law of the adhesive's mechanical properties in both the low-temperature region below the critical temperature T_ref and the high-temperature region above the critical temperature T_ref. However, the prediction results indicate that the viscoelastic model is more consistent with the variation law of the experimental data. Meanwhile, the finite element simulation results are generally consistent with those of the theoretical model. This model can provide theoretical guidance for studying the mechanical behavior of other adhesives operating at different temperatures.

硅酮胶以其优异的粘弹性和耐老化性能，在电子封装等领域常被广泛用作互连材料。然而，由于热膨胀系数的差异，包装结构可能会因热应力而发生胶粘剂失效。本文建立了硅酮胶粘剂的温度相关粘弹性模型，研究了胶粘剂的力学行为变化，并给出了相关参数表达式。此外，采用深度学习和有限元分析对模型进行了对比验证。结果表明，本文所采用的粘弹性模型和深度学习模型都能捕捉温度对胶粘剂影响的趋势。两种模型都成功地捕捉到了胶粘剂力学性能在低于临界温度Tref的低温区和高于临界温度Tref的高温区随温度的变化规律。然而，预测结果表明，粘弹性模型更符合实验数据的变化规律。同时，有限元模拟结果与理论模型基本一致。该模型可为研究其他胶粘剂在不同温度下的力学行为提供理论指导。

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引用次数: 0

Effect of a self-etching ceramic primer on the surface, mechanical, and adhesive properties of lithium disilicate-based glass-ceramics bonded to different substrates 自蚀刻陶瓷底漆对二硅酸锂基微晶玻璃与不同基材粘合的表面、机械和粘合性能的影响

IF 3.5 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives

Pub Date : 2025-11-03 DOI: 10.1016/j.ijadhadh.2025.104200

Maudiela Isabel Arita Torres , Gabriel Freitas Pereira , Nicole Escórcio de Meneses , Ana Letícia Daniel Fontenele , Bruna dos Santos Honório Tonin , Regina Guenka Palma-Dibb , Adriano Lincoln Albuquerque Mattos , Karina Matthes de Freitas Pontes , Raniel Fernandes Peixoto

This laboratory study evaluated the effect of a self-etching ceramic primer (Monobond Etch & Prime – MEP), with or without grit blasting, on the surface, mechanical, and adhesive properties of lithium disilicate (LD) ceramics, compared to hydrofluoric acid and silane (HF + S). LD specimens were prepared in two geometries: square-shaped (10 mm × 10 mm × 4 mm) for surface roughness (ΔS_a, μm), contact angle (CA), microtensile bond strength (μTBS), and scanning electron microscopy (SEM); and rectangular-shaped (15 mm × 2.5 mm × 1.5 mm) for three-point flexural strength (σf3P). Four groups were tested: HF + S grit-blasted (HF + S[g]), HF + S polished (HF + S[p]), MEP[g], and MEP[p]. After treatment, ΔS_a, CA, and σf3P were measured. LD blocks were cemented to composite or dentin to evaluate μTBS before and after thermocycling (TC, 10,000 cycles, 5 °C/55 °C, 30 s dwell time). Grit blasting significantly increased ΔS_a (HF + S[g]: 1.16 ± 0.12; MEP[g]: 0.85 ± 0.02) compared to polished specimens (HF + S[p]: 0.47 ± 0.04; MEP[p]: 0.38 ± 0.04), with the lowest CA observed in MEP[g] (27.50 ± 4.09°). HF + S-treated groups showed the lowest σf3P. TC reduced μTBS in all groups, but MEP-treated specimens exhibited greater adhesive stability (ΔμTBS ≤2.0 MPa). Grit-blasted surfaces showed higher μTBS than polished ones. HF + S and MEP performed similarly, except on composite before TC, where HF + S was superior. In conclusion, MEP[g] demonstrated μTBS comparable to HF + S, provided greater adhesive stability after TC, enhanced wettability, better preserved σf3P, reduced ΔS_a, and showed consistent μTBS to resin cement on both dentin and composite substrates, supporting its effectiveness as a reliable surface treatment for LD ceramics.

本实验室研究评估了自蚀刻陶瓷底漆（Monobond Etch & Prime - MEP），与氢氟酸和硅烷（HF + S）相比，在有或没有喷砂的情况下，对二硅酸锂（LD）陶瓷的表面、机械和粘合性能的影响。制备了两种几何形状的LD样品：表面粗糙度（ΔSa, μm）、接触角（CA）、微拉伸结合强度（μTBS）和扫描电子显微镜（SEM）为正方形（10 mm × 10 mm × 4 mm）；三点抗弯强度（σf3P）为15mm × 2.5 mm × 1.5 mm的矩形。试验分为四组：HF + S喷砂组（HF + S[g]）、HF + S抛光组（HF + S[p]）、MEP[g]、MEP[p]。处理后测定ΔSa、CA、σf3P。将LD块与复合材料或牙本质粘接，评价热循环（TC， 10000次循环，5°C/55°C， 30 s停留时间）前后的μTBS。与抛光试样（HF + S[p]: 0.47±0.04;MEP[p]: 0.38±0.04）相比，喷砂显著提高ΔSa (HF + S[g]: 1.16±0.12;MEP[g]: 0.85±0.02)，其中MEP[g]的CA最低（27.50±4.09°）。HF + s处理组的σf3P最低。TC降低了各组的μTBS，但mep处理的样品表现出更大的粘附稳定性（ΔμTBS≤2.0 MPa）。喷砂表面的μTBS高于抛光表面。HF + S和MEP表现相似，但在TC之前的复合材料中，HF + S表现更好。综上所述，MEP[g]表现出与HF + S相当的μTBS，在TC后具有更强的粘接稳定性，增强了润湿性，更好地保留了σf3P，降低了ΔSa，并且在牙本质和复合基材上对树脂水泥表现出一致的μTBS，支持其作为LD陶瓷表面处理的有效性。

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引用次数: 0

Effectiveness of surface treatments on tooth–base bonding in conventional and 3D-printed dentures: A systematic review of in vitro studies 表面处理对传统和3d打印义齿牙基结合的有效性：体外研究的系统回顾

IF 3.5 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives

Pub Date : 2025-11-02 DOI: 10.1016/j.ijadhadh.2025.104190

Victor de Melo-Soares , Alessandra Rodrigues de Sousa , Andréa Cândido dos Reis , Mariana Lima da Costa Valente

Research question

Adhesion between the base and artificial teeth in 3D-printed prostheses is limited by physicochemical disparities, which may compromise bond strength and lead to failure. Developing strategies to enhance this adhesion is crucial to improve mechanical performance and clinical success of digitally fabricated prostheses. The research question was: How effective are different surface treatments in improving the bond strength between prefabricated and 3D-printed denture teeth and denture base resins compared to conventional denture base resins?

Material and methods

This review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) and was registered at osf.io/mqncf. Literature searches were conducted across five databases (PubMed, Embase, ScienceDirect, Web of Science, Scopus) and two sources of non-peer-reviewed literature (Google Scholar and ProQuest). The RoBDEMAT tool was applied to assess the risk of bias in the included studies.

Results

A total of 449 articles were identified, after removing duplicates, 339 titles and abstracts were screened, 18 were assessed in full, and 7 were included in the review. The highest shear bond strength was achieved with combined chemical and thermal treatment (24.49 ± 0.91 MPa), outperforming particle blasting (16.17 ± 1.30 MPa) and no treatment (13.73 ± 1.15 MPa). Blasting, however, showed better performance (5.71 ± 1.47 MPa) than chemical treatment alone (2.87 ± 0.44 MPa). Despite methodological variations, mechanical, chemical, and thermal treatments, applied individually or in combination, can enhance resin bonding. Bond strength was lower when combining printed and prefabricated components compared to fully printed parts.

Conclusions

Mechanical and chemical surface treatments effectively improve the bond strength between denture teeth and 3D-printed denture base resins. Enhancements in surface roughness, surface energy, and chemical interactions were associated with stronger adhesion.

研究问题3d打印修复体中基托与假牙之间的粘附受到物理化学差异的限制，这可能会影响结合强度并导致失败。发展策略，以提高这种粘附是至关重要的，以提高机械性能和临床成功的数字制造假体。研究的问题是：与传统的义齿基托树脂相比，不同的表面处理在提高预制和3d打印义齿与义齿基托树脂之间的结合强度方面的效果如何？材料和方法本综述遵循系统评价和荟萃分析首选报告项目（PRISMA），并在osf.io/mqncf上注册。文献检索通过5个数据库（PubMed, Embase, ScienceDirect, Web of Science, Scopus）和2个非同行评议文献来源（b谷歌Scholar和ProQuest）进行。应用RoBDEMAT工具评估纳入研究的偏倚风险。结果共纳入文献449篇，剔除重复后筛选出339篇题目及摘要，全文评价18篇，纳入综述7篇。化学热处理复合处理获得的剪切强度最高（24.49±0.91 MPa），优于颗粒爆破（16.17±1.30 MPa）和未处理（13.73±1.15 MPa）。爆破效果（5.71±1.47 MPa）优于单纯化学处理（2.87±0.44 MPa）。尽管方法不同，机械、化学和热处理，单独或联合应用，可以增强树脂粘合。与完全打印的部件相比，打印和预制部件结合时的粘合强度较低。结论机械表面处理和化学表面处理可有效提高义齿与3d打印义齿基托树脂的结合强度。表面粗糙度、表面能和化学相互作用的增强与更强的附着力有关。

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引用次数: 0

Deciphering elastoplastic properties from atomistic structure: Reactive coarse-grained MD for epoxies 从原子结构解读弹塑性特性：环氧树脂的反应性粗粒MD

IF 3.5 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives

Pub Date : 2025-10-31 DOI: 10.1016/j.ijadhadh.2025.104196

Maximilian Ries, Jonas Tiefenthäler, Maximilian Losert, Gunnar Possart

Adhesive joints provide a better strength-to-weight ratio than traditional fastening methods and thus play a vital role in lightweight and cost-efficient engineering designs. The interaction of adherend and adhesive causes a region with different local resin-to-hardener ratios, e.g., due to demixing or sterically hindered diffusion during curing. Consequently, this interphase exhibits a mechanical behavior that differs from that of the bulk adhesive, immediately implying thickness-dependent properties of the joint, which should be, but are not yet, addressed in engineering. Additionally, these local gradients of structural and especially mechanical properties are, if at all, very difficult to assess by experimental methods. As a remedy, we derive the elastoplastic material parameters for bulk adhesives covering a wide range of mixing ratios. To this end, we simulate the curing and deformation of pure epoxy with reactive, coarse-grained molecular dynamics (CGMD) and introduce an extrapolation scheme to obtain the quasi-static material response. The latter removes the viscous contributions, which facilitates the comparison of ultra-fast MD with conventional mechanical testing. Based on these results, we calibrate elastoplastic constitutive models with VOCE-type hardening and obtain mixing ratio-dependent Young’s modulus, Poisson’s ratio, yield stress, and hardening parameters. Finally, we obtain the correlation between these material parameters and structural characteristics, such as density and curing degree, for a wide range of mixing ratios. With these results, we can then conclude on the local mechanical properties of interphases, based on CGMD simulations of the curing of adhesive joints, which inherently provide the local structure gradients in the vicinity of the adherends [1].

与传统的紧固方法相比，粘接接头提供了更好的强度重量比，因此在轻量化和经济高效的工程设计中起着至关重要的作用。粘附剂和粘合剂的相互作用导致一个区域具有不同的局部树脂与硬化剂比率，例如，由于在固化期间的脱混或空间阻碍扩散。因此，这种界面相表现出不同于散装粘合剂的力学行为，立即意味着接头的厚度依赖特性，这应该在工程中得到解决，但尚未得到解决。此外，这些局部的结构梯度，特别是力学性能，如果有的话，很难用实验方法来评估。作为补救措施，我们推导了弹性胶黏剂的材料参数，涵盖了广泛的混合比。为此，我们采用反应性粗粒分子动力学（CGMD）模拟纯环氧树脂的固化和变形，并引入一种外推方案来获得准静态材料响应。后者消除了粘性的贡献，这有利于超快速MD与常规力学测试的比较。基于这些结果，我们校准了具有voce型硬化的弹塑性本构模型，并获得了与混合比相关的杨氏模量、泊松比、屈服应力和硬化参数。最后，在较宽的混合比范围内，我们得到了这些材料参数与结构特性（如密度和固化度）之间的相关性。根据这些结果，我们可以基于黏着接头固化的CGMD模拟得出界面的局部力学性能，它固有地提供了黏着接头[1]附近的局部结构梯度。

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引用次数: 0

Automating thermal ageing and tensile tests for single lap joints 自动化单搭接热老化和拉伸试验

IF 3.5 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives

Pub Date : 2025-10-30 DOI: 10.1016/j.ijadhadh.2025.104198

Kazumasa Shimamoto, Takaya Inoue, Don N. Futaba, Haruhisa Akiyama, Woosuck Shin

Structural adhesive joints require high reliability. Thus, it is essential to bond the adherend under “bonding conditions” that can provide the required performance, including not only the initial properties but also changes over time. However, as the bonding conditions are dependent on multiple factors, the optimisation is complex. To address this multivariate problem, we constructed an experimental system that can autonomously search for the optimum “bonding conditions”. As a first step, the automation of thermal ageing and tensile tests for the characterisation of bonded joints was investigated. This was achieved using an automated testing system combining serial-link articulated robots, ovens, and tensile-testing machines. The effects of curing temperature and curing time on the initial strength were investigated experimentally, and the optimum curing conditions and the change in residual strength over time by thermal ageing were verified.

结构粘接要求可靠性高。因此，必须在能够提供所需性能的“粘合条件”下粘合粘合剂，不仅包括初始性能，还包括随时间变化的性能。然而，由于粘接条件依赖于多种因素，因此优化是复杂的。为了解决这个多变量问题，我们构建了一个可以自主搜索最佳“键合条件”的实验系统。作为第一步，研究了焊接接头的热老化和拉伸测试的自动化。这是通过一个自动化测试系统实现的，该系统结合了串行链接关节机器人、烤箱和拉伸试验机。通过实验研究了固化温度和固化时间对初始强度的影响，验证了最佳固化条件和热老化残余强度随时间的变化规律。

引用次数: 0

Synergistic effects of hybrid h-BN and HNT particles on mechanical performance and fracture characterization of epoxy adhesive h-BN和HNT杂化颗粒对环氧胶粘剂力学性能和断裂性能的协同效应

IF 3.5 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives

Pub Date : 2025-10-30 DOI: 10.1016/j.ijadhadh.2025.104199

Mehmet Veysel Çakır , Özkan Özbek , Nurettin Furkan Doğan

The current study investigates the mechanical performance of adhesively bonded single-lap joints enhanced with halloysite nanotubes (HNT), hexagonal-boron nitride (h-BN), and their hybrids. For this aim, different amounts of single-phase and hybrid nanoparticles were incorporated into the epoxy adhesive, which bonded glass fiber-reinforced polymers (GFRP). Lap-shear and three-point bending experiments were conducted to analyze the effects of the nanoparticles under different loadings. The findings demonstrated that all nanoparticle-doped samples performed better mechanical characteristics than pure samples. Among the single-phase samples, 2.5 wt% h-BN contribution improved shear strength by 57.24 % and bending strength by 43.98 % compared to the pure. However, maximum enhancements in shear and bending strength were achieved from B1.5H1.5, which were 75.43 % and 57.86 %, respectively, compared to the pure sample. In addition, a significant increase of 205.88 % in elongation at break and 57.4 % in bending strain of the B1.5H1.5 sample was observed. These effects were due to the various toughening mechanisms provided by nanoparticles observed in SEM analyses and the synergistic effects formed in hybrid mixtures. Especially in the B1.5H1.5 sample, the hierarchical physical arrangement between HNTs and h-BN platelets creates an effective three-dimensional reinforcement network that enhances crack deflection and energy dissipation through geometric complementarity, causing crack path to extend and increasing the energy consumption.

本研究研究了高岭土纳米管（HNT）、六方氮化硼（h-BN）及其杂化物增强的单搭接接头的力学性能。为此，将不同数量的单相纳米粒子和杂化纳米粒子加入到环氧胶粘剂中，并将其粘合在玻璃纤维增强聚合物（GFRP）上。通过剪切实验和三点弯曲实验，分析了纳米颗粒在不同载荷下的作用效果。结果表明，所有纳米颗粒掺杂的样品都比纯样品具有更好的力学特性。在单相试样中，添加2.5 wt%的h-BN比纯h-BN提高了57.24%的抗剪强度和43.98%的抗折强度。然而，与纯样品相比，b1.5 - h1.5的抗剪强度和抗弯强度提高最大，分别提高了75.43%和57.86%。此外，B1.5H1.5试样的断裂伸长率和弯曲应变分别提高了205.88%和57.4%。这些效应是由于在SEM分析中观察到的纳米颗粒提供的各种增韧机制以及在杂化混合物中形成的协同效应。特别是在b1.5 - h1.5试样中，HNTs和h-BN片之间的分层物理排列形成了有效的三维补强网络，通过几何互补增强了裂纹挠度和能量耗散，导致裂纹路径延伸，增加了能量消耗。

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