International Journal of Adhesion and Adhesives最新文献

{"title":"Enhancing the coloration of polypropylene surfaces through low-frequency plasma modification with disperse dyes","authors":"","doi":"10.1016/j.ijadhadh.2024.103837","DOIUrl":"10.1016/j.ijadhadh.2024.103837","url":null,"abstract":"<div><p>This study focuses on the effective coloring of nonwoven polypropylene surfaces, achieved through the application of oxygen and nitrogen plasma treatments in a vacuum environment using cold plasma. Various plasma durations were employed to introduce experimental diversity into the samples. Following surface modification, dispersal dyeing based on benzenesulphonamide was performed. To evaluate the impact of surface modification, comprehensive characterization tests, including SEM, FTIR-ATR, XRD, and XPS, were conducted. Performance effects were scrutinized through color spectrum values (CIE L*, a*, b*, and K/S values), tearing strengths and contact angle measurements. Furthermore, fastness tests for washing (color change and staining) and for rubbing (dry and wet) were carried out to examine the effect of surface modification on dyed polypropylene nonwoven fabrics. According to the test results, a notable increase in K/S values was observed after plasma treatments. The impact of nitrogen and oxygen plasma treatment on polypropylene surfaces was comprehensively evaluated, considering performance properties across all characterization processes.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142172550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of thermal processing on the integrity of polyurea microcapsules for underwater adhesives","authors":"","doi":"10.1016/j.ijadhadh.2024.103838","DOIUrl":"10.1016/j.ijadhadh.2024.103838","url":null,"abstract":"<div><p>Adhesives that rely on a curing mechanism struggle to function in underwater environments due to detrimental interactions with water. One strategy to overcome this involves protecting sensitive components in mechanically responsive microcapsules. In this way, a two-part adhesive can be achieved via a single mixture, applied as one would apply a pressure sensitive adhesive. This work focused on improving polyurea microcapsule shell integrity, specifically focusing on the effect of additional thermal processing. The improved microcapsule shells displayed limited payload leakage with only an 8 % loss in pot life compared to the base isocyanate resin alone. A mixture of optimized microcapsules and isocyanate resin was evaluated against a wide range of substrates and conditions, including dry and wet environments. When microcapsules were intentionally ruptured to release the catalyst and crosslinker payload, the microcapsule-isocyanate mixture had improved adhesive strength (506 %) compared to the base isocyanate resin without microcapsules.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142168336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness of liquid rubber dam in improving dental isolation: An in vitro study","authors":"","doi":"10.1016/j.ijadhadh.2024.103819","DOIUrl":"10.1016/j.ijadhadh.2024.103819","url":null,"abstract":"<div><p>A liquid rubber dam is used as a gingiva protector and to ameliorate the sealing quality around the tooth. No information about the mechanical properties of liquid rubber dam and its efficiency in tooth isolation was reported in the literature. Therefore, the purpose of the present <em>in vitro</em> study was to evaluate the morphological changes after contact with different solutions, microleakages, bond strength to enamel, and mechanical properties of two different liquid rubber dams (Top dam “TD” and OpalDam™ “OD”). Scanning electron microscopy (SEM) was used to investigate the morphological changes. Compression strength and viscosity tests were used to investigate the mechanical properties. A shear bond strength test was performed to evaluate the bond strength of liquid rubber dams to enamel. Solubility was performed to investigate the effect of water after 90 min of contact. Finally, the microleakage tests were performed by using methylene blue. Data were statistically analyzed. No presence of methylene blue was detected after 30, 60, and 90 min of immersion for both dams, giving both products a good sealing ability in time. SEM demonstrated morphological changes of the materials’ surfaces after contact with bleaching and phosphoric acid products. TD demonstrated higher bond strength to enamel as well as higher compression strength at 90 min compared to OD. However, TD demonstrated higher solubility than OD, which facilitates its deposition in layers. The shear viscosity of the TD was higher than that of the OD material by about a factor of 60. Within the limitations of the present study, liquid rubber dam can ensure the sealing ability. TD seems to be more resistant and has higher bond strength to tooth structure compared to OD.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142161736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of surface micro-texturing laser-etching on adhesive property and failure behaviors of basalt fiber composite single-lap-joint","authors":"","doi":"10.1016/j.ijadhadh.2024.103831","DOIUrl":"10.1016/j.ijadhadh.2024.103831","url":null,"abstract":"<div><p>Laser-etching technology can perform micro-nano processing on the sub-surface of composite, thereby enhancing its mechanical interlocking to improve the adhesive performance. However, it can easily cause surface fiber damage and destroy the integrity of composite. Hence, the influences of surface micro-texturing and laser-etching effect on the adhesive property and failure behaviors of basalt fiber reinforced polymer (BFRP) composite single-lap-joint are investigated. Here, different surface micro-texturing of BFRP with different laser-etching power and line space are processed by laser-etching. The surface morphology and wetting property of experimental samples are characterized, and single lap tests are conducted to evaluate the adhesive properties. Results show that the adhesive property firstly increases and then decreases with the laser power increase, where the samples etched with 10 W and line space of 0.1 mm perform the best. It is found that the epoxy on the surface is removed by laser-etching to improve the contact area, but the fiber damage is formed to affect the adhesive property. When the laser-etching reaches a certain depth in spite of fiber damage, it can achieve the best bonding performance with the balance of performance and structural integrity. Finally, the multi-scale simulations are conducted to effectively demonstrate the laser-etched interface bonding behavior and damage evolution process of BFRP single lap joints.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142147649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Local reinforcement of adhesively bonded square shape aluminum energy absorber with CFRP under quasi-static axial loading: An experimental and numerical study","authors":"","doi":"10.1016/j.ijadhadh.2024.103835","DOIUrl":"10.1016/j.ijadhadh.2024.103835","url":null,"abstract":"<div><p>This study presents experimental and numerical investigations on the effects of composite ply angle, thickness and number of layers on energy absorption behavior of adhesively bonded carbon fiber-reinforced plastic/aluminum hybrid structure under quasi-static axial loading. This paper aims to use the advantages of adhesive bonding for the local strengthening of a square shaped aluminum energy absorber by composite and as a result achieving desirable energy absorption behavior prior to failure in the connection and without heterogeneous deformation of the structure while reducing the weight of the structure and usage of material and at the same time obtaining favorable results compared to the traditional ways like reinforcing the aluminum structure with composite globally. For this purpose, two models were made and analyzed; one reinforced with four L-shaped composites adhesively bonded using Araldite 2015 to four outside corners of the aluminum square and the other reinforced locally to four corners from within the square. Finite element model was developed for analysis of these hybrid structures. Five different ply angles for composite and multiple number of composite layers varied from 2 to 8 layers under the same and different thicknesses were investigated. Moreover an alpha factor has been determined to measure the importance of local reinforement of the square shape aluminum energy absorber by L-shaped composites. The results showed that compared to aluminum and aluminum with global composite reinforcement energy absorbers, due to the adhesive connection between aluminum and composite in the locally reinforced CFRP/aluminum specimen, the composite had better energy absorption by following the collapse pattern of aluminum and creating a continuous collapse and failure modes. The results indicated good coordination and agreement between the simulated models and the experimental tests. The findings from this experiment demonstrates significant potential for local reinforcement of structures employing adhesives. Utilizing such connections and the ability to strengthen specific areas based on arbitrary geometry and strengthening location could offer substantial opportunities in constructing lightweight structures with high energy absorption across diverse applications.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142147651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of interfacial bonding on the low velocity impact performance of jute fibre/epoxy polymer composites","authors":"","doi":"10.1016/j.ijadhadh.2024.103833","DOIUrl":"10.1016/j.ijadhadh.2024.103833","url":null,"abstract":"<div><p>This research aimed to analyze the low-velocity impact on jute/epoxy polymer samples and used their fractured samples for computer tomographic (CT) analysis for predicting the impact damage areas developed on jute/epoxy polymer by using its impact images. The computer tomography analysis was performed with two different thicknesses of natural fabric composites. Initially, this developed the jute/epoxy polymer composites using Compression molding techniques with different thickness and these fabricated samples undergoes to analyzed the low-velocity impact strength with an automated data acquisition system on different thicknesses of jute fabric-reinforced polymer composite materials. The fabricated composite plates were tested under the low-velocity impact testing method with different loading conditions. The higher impact strength was observed on the 6 mm thickness of the plate. The impact analysis on laminate materials is performed with different energy levels on the same thickness of the plate individually. Among various energy absorption tests, the 10 J created more damage on the 3 mm thick plate and 15 J created more damage on the 6 mm thick plate. After the impact testing, the samples were analyzed in the damaged areas using CT scanning systems. Based on this analysis, the fabricated materials were best-suited for lightweight application areas.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142147650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adhesive bonding in automotive hybrid multi-cell square tubes: Experimental and numerical investigation on quasi-static axial crashworthiness performance","authors":"","doi":"10.1016/j.ijadhadh.2024.103832","DOIUrl":"10.1016/j.ijadhadh.2024.103832","url":null,"abstract":"<div><p>The increasing demand for lightweight vehicles to improve fuel efficiency and performance has driven the adoption of thin-walled tubes made from lightweight hybrid materials as key energy-absorbing components in automotive structures. However, joining these hybrid materials presents a challenge, as traditional methods like welding are unsuitable. This study examines the axial crushing behavior of multi-cell, thin-walled energy-absorbing tubes with square cross-sections, joined using adhesive bonding. A two-cell square aluminum tube was experimentally constructed and tested to evaluate its energy absorption characteristics and failure modes. Additionally, the tube was modeled in ABAQUS software, incorporating elastoplastic deformation of the aluminum and cohesive contact properties for the adhesive layer. After validating the model with experimental data, a parametric study was conducted to assess the impact of different plate material combinations and wall thicknesses on crashworthiness and failure modes. The findings revealed that the effectiveness of material combinations (Al/St) with varying wall thicknesses depends on the adhesive bond's ability to maintain plate integrity during axial loading. In some cases, specific Al/St combinations with particular wall thicknesses resulted in a loss of structural integrity, leading to global cohesive failure. Finally, an analytical equation was developed to predict the axial mean crush force, which demonstrated strong agreement with both experimental and numerical results.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142147648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of laser treatment on the adhesion force of metallized carbon fiber reinforced polymer (CFRP) composite","authors":"","doi":"10.1016/j.ijadhadh.2024.103830","DOIUrl":"10.1016/j.ijadhadh.2024.103830","url":null,"abstract":"<div><p>Carbon fiber reinforced polymer (CFRP) is an engineering composite material with excellent performance. After metallization, the CFRP composite exhibits unique properties such as electromagnetic shielding and high electrical conductivity. In this study, we utilized laser treatment process to enhance the adhesion strength of the copper layer electrolessed on CFRP composite. The surface microstructure of CFRP and the copper layer was determined using an optical microscope, and the adhesion force of the copper layer on CFRP composite was measured through 3M tape and pull-out tests. The results indicate that with an increase in the number of laser treatment cycles, the trenches depth on the surface of CFRP composite also increases, leading to high surface roughness and thus enhancing the adhesion strength between the copper layer and the composite. The adhesion state of the copper layer on laser-treated CFRP composite can be qualitatively classified as grade 5B. Additionally, both mechanical cutting and laser treatment can improve the adhesion strength of the samples. The samples treated by mechanical cutting and the laser scan with ±45° exhibit the highest adhesion strength of 5.48 MPa. This is 415 % higher than that of the untreated sample, with a minimum damage area after pull-out testing, approximately 10 %. Compared to the sandblasting pretreatment process, the adhesion strength of the sample by laser treatment increased by 119 %.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142128605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of bond strength and electronic properties at the 6H-SiC/Al interface: Based on first-principles calculations","authors":"","doi":"10.1016/j.ijadhadh.2024.103817","DOIUrl":"10.1016/j.ijadhadh.2024.103817","url":null,"abstract":"<div><p>As the medium between the reinforcement and the matrix, the interface plays a critical role in the mechanical properties of silicon carbide particle reinforced aluminum matrix composites. This study used first-principles calculation methods to systematically analyze 14 different 6H-SiC/Al low-index interfaces, including atomic configuration, interface bonding strength, and electronic structure and bonding principles between interfaces. The adhesion work calculations reveal that the C-top-SiC(0001)/Al (111) and SiC(0001)/Al (100) interfaces have larger adhesion work values, specifically 5.09 J/m² and 5.021 J/m², respectively. Additionally, the rigid tensile testing confirms that the tensile stress values at the interfaces of C-top-SiC(0001)/Al (111) and SiC(0001)/Al (100) are higher, measuring 36.4 GPa and 32.5 GPa, respectively. The above results show that the interface bonding strength of these two configurations is the highest, the most stable, and most likely to appear in the 6H-SiC/Al interface configuration. The results of the analysis on charge density difference and partial density of states indicate that the interfaces of C-top-SiC (0001)/Al (111) and SiC (0001)/Al (100) are primarily composed of strong ionic and covalent bonds.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142128604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shelf-life effect of silane-containing universal adhesive on bonding effectiveness to glass-ceramic","authors":"","doi":"10.1016/j.ijadhadh.2024.103806","DOIUrl":"10.1016/j.ijadhadh.2024.103806","url":null,"abstract":"<div><h3>Objective</h3><p>To evaluate the shelf-life effect of a silane-containing universal adhesive (UA) on its shear bond strength (SBS) to lithium disilicate glass-ceramic (LiSi₂).</p></div><div><h3>Methods</h3><p>SBS to mirror-polished (‘MP’) and hydrofluoric acid-etched ground (‘HF’) lithium disilicate glass-ceramic (Initial LiSi, GC) with/without prior separate ceramic primer application (G-Multi Primer, GC: ‘G-MP’) was measured. Scotchbond Universal Plus (‘SBUp’) (3M Oral Care) was used 33 (‘fresh’) and 6 (‘expiring’) months before the expiration date. ‘MP’ specimen preparation involved (1) ‘G-MP’ priming (or not), (2) ‘SBUp’ application, (3) composite (Clearfil AP-X, Kuraray Noritake) placement, and (4) 20 s light-curing (SmartLite Pro, Dentsply Sirona). ‘HF’ specimen preparation involved (1) HF (Porcelain Etch, Ultradent) etching, (2) phosphoric acid (K-Etchant, Kuraray Noritake) post-etching, with (3) and (4) being the same as for ‘MP’. Upon light-curing, all specimens were stored in 37 °C water for either 1 week (‘immediate’) or 3 months (‘aged’) prior to SBS measurement. Statistics involved Linear Mixed-Effects modelling (α = 0.05).</p></div><div><h3>Results</h3><p>SBS was not significantly affected by SBUp's shelf life, except for a significantly higher SBS recorded for ‘fresh’ SBUp applied on HF-etched and separately silane-primed LiSi₂. Aging did not significantly decrease SBS. In fact, a significant increase in SBS upon aging was recorded for HF-etched LiSi₂ that was not separately silane-primed. The significantly highest bond strength was measured when LiSi₂ was HF-etched followed by separate silane-priming.</p></div><div><h3>Significance</h3><p>Despite the UA investigated has silane in its formulation, the most effective and durable bonding to LiSi₂ was achieved by HF-etching followed by separate silane-priming, irrespective of the UA's shelf life.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}