Science and Engineering of Composite Materials最新文献

{"title":"The assessment of color adjustment potentials for monoshade universal composites","authors":"B. Korkut, Çiğdem Hacıali, Ezgi Tüter Bayraktar, F. Yanikoglu","doi":"10.1515/secm-2022-0189","DOIUrl":"https://doi.org/10.1515/secm-2022-0189","url":null,"abstract":"Abstract Objective To evaluate the color adjustment potentials of monoshade universal composites in different shades of class I cavities. Methodology About 132 restorations were performed using monoshade universal composites (Omnichroma, OMNI; Essentia Universal; EU; Charisma Diamond One, CDO), and one simplyshade composite (NeoSpectra-ST, NEO) as control. A transparent silicone mold was used to provide standardized restorations on prefabricated class I cavities of acrylic dentures in B1, A2, and C4 shades. The assessment of color adjustment was performed immediately after, at 24 h, and at 2 weeks, through the cross-polarized dental photographs. The quantitative assessments were performed using a software (Digital Color Meter, Macintosh AC). The collected L*, a*, and b* coordinates from the restorations and the adjacent denture surfaces were used to provide Δ E 00 ⁎ text{Δ}{E}_{00}^{ast } values. Shapiro–Wilk, three-way Anova and Tukey HSD Test were used for the statistical analyses (p < 0.05). Results Among all composites and shades, the Δ E 00 ⁎ text{Δ}{E}_{00}^{ast } values were significantly the highest (1.27 ± 0.49a) for the immediately after assessments compared to the assessments at 1 day (1.01 ± 0.41b) and 2 weeks (0.97 ± 0.4c)(p < 0.05). At 24 h and 2 weeks of evaluations, the Δ E 00 ⁎ text{Δ}{E}_{00}^{ast } values for the control (0.42 ± 0.16H) were significantly the lowest (p < 0.05). Only the control presented imperceptible color changes for all the cavity shades (PT ≤ 0.8). After 2 weeks, EU (1.06 ± 0.32F) and OMNI (1.12 ± 0.18EF) presented significantly lower Δ E 00 ⁎ text{Δ}{E}_{00}^{ast } values compared to the CDO (1.29 ± 0.2CD) (p < 0.05). Restorations in lighter cavities presented significantly lower Δ E 00 ⁎ text{Δ}{E}_{00}^{ast } values. Conclusion Monoshade universal composites presented acceptable but perceptible color adjustment potentials in class I cavities without the shade selection procedure. Simplyshade composites following the shade selection might still be the best options regarding the level of color adjustment. Monoshade universal composites might provide better color adjustments in cavities with lighter shades.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41420965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogels loaded with atenolol drug metal–organic framework showing biological activity","authors":"Juan Du, Limei Fan, Jinfeng Fu","doi":"10.1515/secm-2022-0216","DOIUrl":"https://doi.org/10.1515/secm-2022-0216","url":null,"abstract":"Abstract Using the starting reactants of Zn(OAc)2 and 2-mercaptonicotinic acid (H2L), we successfully synthesized a fresh Zn(ii) compound, that is, [Zn3(L)3] n (1), under hydrothermal conditions and then successfully loaded with atenolol. Hualuronic acid/carboxymethyl chitosan hydrogels loaded with atenolol drug metal–organic framework were prepared based on a chemical synthesis method. The microscopic morphology of the hydrogels was investigated, and scanning electron microscopic results showed that the hydrogels had a highly porous morphology with good penetration between the pores. For the new hydrogels, the enzyme-linked immunosorbent assay detection was conducted, and the production of sVCAM-1 and TNF-a in vascular endothelial cells was determined. Besides, the levels of inflammatory response in the vascular endothelial cells were also determined with the real-time reverse transcriptase polymerase chain reaction assay.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46239111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A numerical study on the spatial orientation of aligning fibrous particles in composites considering the wall effect","authors":"Jianjun Lin, Qingxin Zhao, Huisu Chen, Caihong Xue, Mingqi Li, Lili Yuan","doi":"10.1515/secm-2022-0195","DOIUrl":"https://doi.org/10.1515/secm-2022-0195","url":null,"abstract":"Abstract The reinforced efficiency of steel fibers in composites is closely related to their spatial orientation, which can be generally driven by the external magnetic force and restricted by the wall effect of rigid boundaries of the container. To clarify the spatial orientation of steel fibers in composites considering the effect of rigid boundaries under the electromagnetic field, a series of two-phase models consisting of fibrous particles and homogeneous matrix are generated, in which the fibers are separately simplified as spherocylindrical, cylindrical, and linear particles. Based on these models of the semi-periodic boundaries, the effect of fiber characteristics (e.g., the fiber content V f, fiber aspect ratio ε, fiber length l sf, and fiber style) on both the spatial distribution and orientation degree of fibrous particles is studied before and after the fibers are aligned by the magnetic force. The results revealed that (1) both the effective number N A and orientation degree ξ of fibrous particles at a cross-section of the container can be greatly increased when the electromagnetic field is applied and (2) the wall effect of rigid boundaries shows an adverse impact on the amelioration of N A and ξ, and the range size of the affected region is essentially equal to the effective length of fibrous particles of different shapes (e.g., l sf + D sf) for spherocylindrical particles and l sf for cylindrical and linear particles).","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49316345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An integrated structure of air spring for ships and its strength characteristics","authors":"Yuqiang Cheng, Lin He, C. Shuai, Cunguang Cai, Hua Gao","doi":"10.1515/secm-2022-0221","DOIUrl":"https://doi.org/10.1515/secm-2022-0221","url":null,"abstract":"Abstract The increasing demand for the impact resistance of ships entails the excellent impact resistance and deformability of air spring (AS) for ships under high internal pressure. However, an AS of traditional structure is difficult to satisfy such new demand since it is designed with only 10 mm maximum deformation under high internal pressure and strong impact. For this reason, an integrated structure of filament winding reinforced bellows is proposed to ensure the structural strength at the connection of AS bellows and flanges under strong impact and high internal pressure. On this basis, a parameterized design of integrated bellows strength is explored, and we analyzed how the strength of the bellows was affected by the parameters of geometrical structure, material features, and filament winding. As proved in tests, the integrated structural design of the bellows could ensure the strength of AS under strong impact and high internal pressure, and the test result perfectly matches with the calculated strength of the integrated bellows as well as the optimized design.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47782187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"XRD analysis determined crystal cage occupying number n of carbon anion substituted mayenite-type cage compound C12A7: nC","authors":"Cong Ji, Fan Gu","doi":"10.1515/secm-2022-0197","DOIUrl":"https://doi.org/10.1515/secm-2022-0197","url":null,"abstract":"Abstract In this study, a series of samples of C12A7 derivative was prepared by high temperature sintering in a sealed graphite crucible. The theoretical model of C12A7 derivatives with different carbon occupation numbers was established. The X-ray diffraction (XRD) theoretical calculation was carried out. The conjecture was verified to a certain extent through the comparison of the theoretical calculation of XRD with the experimental results. According to the calculation results, it was found that the XRD patterns of C12A7 and its derivatives changed regularly with the change in the occupation number in the crystal cage. Under the condition that the types of vacancy atoms remained unchanged, the more vacancy atoms occupied in C12A7 crystal, the higher the peak at 2θ = 33.35° in the diffraction pattern. It was also found that the higher the atomic number of vacancy atoms in C12A7 crystal, the higher the peak at 2θ = 33.35° in the diffraction pattern. The carbon occupation number of samples at different experimental temperatures was deduced. The results showed that the carbon occupancy of the samples prepared at 990, 1,353 and 1,680°C were 11, 4 and 8, respectively.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48988550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chloride ion transport and service life prediction of aeolian sand concrete under dry–wet cycles","authors":"Wei Dong, Yajing Ji","doi":"10.1515/secm-2022-0188","DOIUrl":"https://doi.org/10.1515/secm-2022-0188","url":null,"abstract":"Abstract In this study, the dry–wet cycle test of chloride salt was carried out on aeolian sand concrete with different contents, and the chloride ion content in aeolian sand concrete was determined by taking powder from different depths on one side of the test block. And then combined with Monte Carlo stochastic statistical simulation and Weibull probability distribution function, the service life prediction model of aeolian sand concrete against chloride ion erosion is established. The results show that the free chloride ion content in aeolian sand concrete decreases with the increase in the depth from the surface of the specimen. At the same depth from the surface of the specimen, the free chloride ion content gradually increases with the increase in the number of dry–wet cycles. Through the analysis of life prediction, it is concluded that with the increase in aeolian sand content, the service life of aeolian sand concrete increases first and then decreases. The service life value of concrete with 75% aeolian sand content is the largest, and the greater the thickness of the protective layer, the more favorable the service life value.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42912534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Method for deriving twisting process parameters of large package E-glass yarn by measuring physical properties of bobbin yarn","authors":"Xi Wang, Juanfen Chen, Shuai Li, Pei Xiao, Kai Cheng, Yanhe Wang, Tianyong Zheng","doi":"10.1515/secm-2022-0212","DOIUrl":"https://doi.org/10.1515/secm-2022-0212","url":null,"abstract":"Abstract Twisting is an important part in the production process of large package E-glass yarn. To derive the twisting process parameters of large package E-glass yarn, a method from the physical properties of bobbin yarn is proposed based on the study of the twisting principle of E-glass yarn. After unwinding the bobbin yarn and measuring its twist, loop pitch, and corresponding diameter, the calculation is completed according to the steps of first determining the descending speed of the traveler, then fitting the spindle speed data, and finally calculating the elevating speed of the traveler. The result is that the twisting spindle speed of D450 E-glass yarn with 31.8 T/m decreases from 5,015 to 4,550 rpm, the elevating speed of the traveler is 0.91 m/min, and the descending speed of the traveler is 1.50 m/min. The accuracy of the calculation is verified by monitoring the rotating speed of the roving cake and measuring the loop pitch of bobbin yarn in the twisting experiment. The result shows that the prediction error of this method is less than 1.1%, which can effectively derive the twisting process parameters of large package E-glass yarn, and provide a reference for the twisting process design scheme of glass fiber strand manufacturers.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46198731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of Mg-based metal matrix biomedical composites for acicular cruciate ligament fixation by reinforcing with rare earth oxide and hydroxyapatite – A mechanical, corrosion, and microstructural perspective","authors":"D. Aggarwal, V. Kumar, Siddharth R. Sharma","doi":"10.1515/secm-2022-0179","DOIUrl":"https://doi.org/10.1515/secm-2022-0179","url":null,"abstract":"Abstract This study provides an insight into the synthesis of high-strength and corrosion-inhibiting Mg-based biodegradable implant material by the addition of rare earth oxide material for acicular cruciate ligament reconstruction applications. The matrix has been reinforced with a naturally occurring mineral, hydroxyapatite (Ca5(PO4)3OH) and rare earth oxide, neodymium oxide (Nd2O3), in different concentrations. The mechanical response has been assessed by analyzing the samples’ microhardness, ultimate compressive, and tensile strength. In contrast, the corrosion rates were calculated using phosphate buffer saline solution by using different techniques under suitable physiological conditions. The microstructure characterization has been carried out by field emission scanning electron microscope, electron dispersive spectroscopy, optical microscopy, and X-ray diffraction techniques. Moreover, the surface properties of the composites were assessed using surface roughness and contact angle measurements. The sample showed maximum hardness at a concentration of 1.5% rare earth oxide. Moreover, the highest ultimate compressive and tensile strength followed the same order, i.e., 1.5% > 2% > 1%. In addition, the microstructure analysis revealed a refined microstructure and the formation of secondary intermetallic phases. Resistance to dislocation and grain growth barricading were the prominent features highlighted in the study for enhanced mechanical and corrosion properties. Moreover, the hydrogen evolution was lower for Mg–HA–1.5Nd2O3 samples, which was a clear indication of a reduced corrosion rate.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43540261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 particle size distribution on microstructure and chloride permeability of blended cement with supplementary cementitious materials","authors":"Ge Gao, Qiang Li, Hongjie Luo, Xiao Huang","doi":"10.1515/secm-2022-0226","DOIUrl":"https://doi.org/10.1515/secm-2022-0226","url":null,"abstract":"Abstract In order to improve the chloride ion penetration resistance of supplementary cementitious materials (SCMs) in blended cement, this study optimizes the particle size distribution of cementitious components based on the Fuller model. Portland cement (PC), fly ash (FA), and ground granulated blast furnace slag (GGBFS) are successfully divided into four particle size ranges by precision air classifier, which are 0–8, 8–30, 30–50, and 50–80 μm, respectively. The optimum cementitious materials in four ranges based on 28-day compressive strength are determined by nine groups of orthogonal tests. The blended cement with optimal performance is obtained by GGBFS in 0–8 μm, PC in 8–30 μm, GGBFS in 30–50 μm, and FA in 50–80 μm. The results show that the blended cement with SCMs based on Fuller model have superior microstructure and chloride ion penetration resistance, which is due to their smaller pore size, a strong volcanic ash effect, and chloride ion binding ability. In addition, this research presents a novel approach for realizing the application of a large amount of SCMs in blended cement.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135311332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 on properties of recycled mixed polyester/nylon/spandex modified by hydrogenated petroleum resin","authors":"Xinmou Kuang, Minru Su, Liang Wang, Hao Li, Xiaolan Shen, Mengyun Yu, Yiran Wu","doi":"10.1515/secm-2022-0225","DOIUrl":"https://doi.org/10.1515/secm-2022-0225","url":null,"abstract":"Abstract In order to improve the utilization value of recycled materials, the study considers recycled materials such as polyester/nylon/spandex as raw materials. Using polyester/polyamide/spandex as raw materials, the recycled polyester/polyamide/spandex mixed materials were first pretreated to obtain the pretreated mixed materials. Then, the pretreated mixed materials were evenly mixed with hydrogenated petroleum resin. The composite materials were prepared through extrusion and injection molding. By comparing the mechanical properties, the effects of different hydrogenated petroleum resins and their additives on the tensile strength, bending strength, impact strength, elongation at break, and bending modulus of the composites were investigated. And the microstructure of the fracture surface was characterized by scanning electron microscopy. The results showed that: (a) when the addition amount of hydrogenated C5 petroleum resin was 4.5%, the maximum impact strength and fracture elongation were 18.03 kJ/m 2 and 15.92%, respectively. (b) The maximum tensile strength, bending strength, and bending modulus could reach 22.9, 38.72, and 2217.9 MPa, when the addition amount of hydrogenated C9 petroleum resin was 4.5, 29.5, and 39.5%, respectively.","PeriodicalId":21480,"journal":{"name":"Science and Engineering of Composite Materials","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135212008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}