Materiale Plastice最新文献_第2页

Virtual Preparations Versus Classic Preparations on Resin Models in Prosthodontics 修复学中树脂模型的虚拟制备与传统制备的比较

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2024-01-05 DOI: 10.37358/mp.23.4.5692

Simona andreea Sandu

引用次数: 0

Piezoelectric thin Film Composites with BaTiO3 for Microelectronics 用于微电子学的 BaTiO3 压电薄膜复合材料

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2024-01-05 DOI: 10.37358/mp.23.4.5683

Mihaela Aradoaei, A. Lucaci, R. Ciobanu, Cristina-Mihaela Schreiner, Bogdan-George Rusu, G. Hitruc, Magdalena Aflori, Marius Paulet, A. Caramitu, A. Borş

{"title":"Piezoelectric thin Film Composites with BaTiO3 for Microelectronics","authors":"Mihaela Aradoaei, A. Lucaci, R. Ciobanu, Cristina-Mihaela Schreiner, Bogdan-George Rusu, G. Hitruc, Magdalena Aflori, Marius Paulet, A. Caramitu, A. Borş","doi":"10.37358/mp.23.4.5683","DOIUrl":"https://doi.org/10.37358/mp.23.4.5683","url":null,"abstract":"\u0000The piezocomposites from poly-(vinylidene fluoride) (PVDF) with BaTiO3 (BT) are largely presented in literature, but the composites from polydimethylsiloxane (PDMS) with BT consist a very new scientific preoccupation. The novelty of the paper lies in a new simpler route of preparation of the two composites with PDMS and respectively PVDF matrix, with tailored deposition on specific substrates for microelectronic use (e.g. indium-tin-oxide ITO/glass, Si/Pt, polyethylene terephthalate PET), along with an extensive comparation of their dielectric features, a consistent comparison of the influence of polymer matrix upon the piezoelectric features, and a demonstration of direct use for microelectronic applications of the composites of BT with PDMS. An interesting effect is observed around 100 kHz domain, determined by the activity and architecture of BT particles mainly for the BT-PDMS composites, which induce an additional ionic-dipolar conjugated polarization, as a displacement due to the balance between the resonance and anti-resonance frequency. Such phenomena explain the potential use of such composites as resonators/filters, and BT-PDMS composites should be further investigated for tailored applications in radiofrequency electronic field. We can appreciate that superior piezoelectric features are offered by the composites of BT with PDMS, comparing to the composites with PVDF, which means that the composites of BT with PDMS were worth to study, leading to more versatile variants of electronic characteristics and with superior values.\u0000","PeriodicalId":18360,"journal":{"name":"Materiale Plastice","volume":"29 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139449320","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}

引用次数: 0

The Study of the Glass Fiber Surface Treatment Effect on the Base Strength Characteristics of the Composite Material 玻璃纤维表面处理对复合材料基本强度特性影响的研究

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2024-01-05 DOI: 10.37358/mp.23.4.5695

Imad Rezakalla Antypas, A. Dyachenko

{"title":"The Study of the Glass Fiber Surface Treatment Effect on the Base Strength Characteristics of the Composite Material","authors":"Imad Rezakalla Antypas, A. Dyachenko","doi":"10.37358/mp.23.4.5695","DOIUrl":"https://doi.org/10.37358/mp.23.4.5695","url":null,"abstract":"\u0000This article examines the impact of surface treatment of glass fibers on the strength of a composite material with an unsaturated polyester polymer matrix reinforced with glass fibers. The strength tests conducted include tensile, bending, and impact strength tests, as well as weight loss measurements. The research was conducted in two stages: in the first stage, the time was kept constant while the fibers were treated with varying concentrations of an alkaline NaOH solution; in the second stage, the concentration was fixed and the variable parameter was the treatment time. The results of the study indicate that surface treatment of glass fibers significantly improves their adhesion to the matrix materials, resulting in improved strength test results for the composite samples. The impact resistance, bending resistance, and tensile strength values all increased compared to the reference samples. However, certain changes in the individual parameters of fiber processing led to a slight decrease in tensile strength when it fell below the reference values. Additionally, it was observed that as the concentration of the solution and treatment time increased, the weight of the fibers decreased.\u0000","PeriodicalId":18360,"journal":{"name":"Materiale Plastice","volume":"1 3","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139450061","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}

引用次数: 0

In vitro Study on Water Absorption of Dental Restorative Materials 牙科修复材料吸水性体外研究

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2024-01-05 DOI: 10.37358/mp.23.4.5693

L. Todor, Razvan Fluieras, Dan Florin Bonta, I. Olariu, I. Lile, Otilia Lavinia Stana, R. Popovici, Sergiu Andrei Todor, Daniela Domocos, Ana Maria Matichescu

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Mechanical Properties, DMA and Structural Analysis of Cassia Auriculata/PLA Blended Hybrid bio Matrix Composite 决明子/聚乳酸混合生物基复合材料的力学性能、DMA 和结构分析

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2024-01-05 DOI: 10.37358/mp.23.4.5689

Sengalani Perumal Srinivasan, Raghavendran Giri, Vajjiram Santhanam, Paulraj Prabhu

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Surface-modified Polyurethane Structures Used as a Carrier for Simvastatin for the Possible Treatment of Atherosclerosis in Patients with Hepatic Arterial Variations 表面改性聚氨酯结构用作辛伐他汀的载体，可用于治疗肝动脉变异患者的动脉粥样硬化症

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2024-01-05 DOI: 10.37358/mp.23.4.5690

Laura Andreea Ghenciu (Bolintineanu), Sorin Lucian Bolintineanu, F. Borcan, D. Zăhoi

{"title":"Surface-modified Polyurethane Structures Used as a Carrier for Simvastatin for the Possible Treatment of Atherosclerosis in Patients with Hepatic Arterial Variations","authors":"Laura Andreea Ghenciu (Bolintineanu), Sorin Lucian Bolintineanu, F. Borcan, D. Zăhoi","doi":"10.37358/mp.23.4.5690","DOIUrl":"https://doi.org/10.37358/mp.23.4.5690","url":null,"abstract":"\u0000Simvastatin, a lipid-lowering drug from the statins group, is used in various dyslipidemias. It appears like a very useful medication to decrease the level of total cholesterol, of the low-density-lipids and triglycerides from blood, but it is well-known that the administration of statins have serious side effects, like muscle pain and weakness that can lead to kidney damage, rash on the skin and inflammation of the joints and of the blood vessels, shortness of breath, inflammation of the liver, dark urine, anemia, memory and sleep disorders, and problems in performing the sexual act. The main aims of this research were to obtain and to characterize a polymer carrier used for the transmembrane transfer of simvastatin. Hepatic arterial variations are common knowledge and it has been studied that these types of arteries have a narrower endoluminal diameter, therefore the patients may be prone to develop atherosclerosis more rapid that the ones with standard hepatic arterial patterns. The samples based on polyurethane structures with and respectively without the active agent were synthesized and characterized by measurements of pH, encapsulation efficacy, cumulative drug release in a simulated body fluid, scanning electron microscopy, Zetasizer measurements, thermal stability, cytotoxicity assay, and non-invasive skin irritation assessment. The results indicate the obtaining of heterogenous polyurethane structures with mean sizes between 80-440 nm and neutral pH, that have a good stability against the agglomeration tendency and a prolonged release rate. The results on structures cytotoxicity and their non-irritative potential are important clues that can be used in further clinical investigations.\u0000","PeriodicalId":18360,"journal":{"name":"Materiale Plastice","volume":"39 12","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139449511","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}

引用次数: 0

Effect of Process Parameters on the Hardness of 3D-printed Thermoplastic Polyurethane that Includes Foaming Agent 工艺参数对含发泡剂的 3D 打印热塑性聚氨酯硬度的影响

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2024-01-05 DOI: 10.37358/mp.23.4.5694

Mariana Cristiana Iacob, Diana Popescu, F. Baciu

{"title":"Effect of Process Parameters on the Hardness of 3D-printed Thermoplastic Polyurethane that Includes Foaming Agent","authors":"Mariana Cristiana Iacob, Diana Popescu, F. Baciu","doi":"10.37358/mp.23.4.5694","DOIUrl":"https://doi.org/10.37358/mp.23.4.5694","url":null,"abstract":"\u0000Recent progress in Material Extrusion-based Additive Manufacturing (MEX) has introduced active foaming agents in filaments composition, thus allowing for the tuning, by various process parameters, the hardness and the mechanical behavior of 3D-printed parts. In case of thermoplastic polyurethane (TPU) filaments, these advances significantly broaden the range of applications, particularly in the domains of comfort and orthotics (wrist-hand orthoses, insoles), offering the dual benefits of design flexibility inherent in MEX and the comfort of lightweight and customizable structures. However, the field is still in its early stages, with only a limited number of research efforts dedicated to characterizing these novel materials. In this context, this study is focused on determining the influence of printing temperature (190�C, 220�C, 240�C), infill density (25%, 35%, 45%) and infill pattern (honeycomb, gyroid) over the hardness of cylindrical specimens made of Colorfabb varioShore TPU. A comprehensive methodology of calibration is also presented as mandatory for obtaining good quality and accurate products by establishing correlations between flow rate and printing temperatures. The findings showed that the printing temperature is the most relevant factor impacting the hardness of varioShore TPU prints. At a printing temperature of 190�C, which corresponds to less foamed prints, the honeycomb infill yielded higher hardness compared to the gyroid infill, but the difference was not significant. Also, at 220�C and 240�C, the mean values of hardness remain relatively consistent, regardless of infill density and pattern.\u0000","PeriodicalId":18360,"journal":{"name":"Materiale Plastice","volume":"12 3","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139449755","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}

引用次数: 0

CONTENTS 4 / 2023 内容 4 / 2023

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2024-01-05 DOI: 10.37358/mp.23.4.5681

引用次数: 0

The Development of New Nanoplatforms Based on Albumin and Graphene Oxide for Aticancer Therapy 开发基于白蛋白和氧化石墨烯的新型癌症治疗纳米平台

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2024-01-05 DOI: 10.37358/mp.23.4.5682

Elena Iuliana Bîru, Andrei Sarbu, H. Iovu

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Preliminary Hybrid Joint Analysis for Aircraft Structures 飞机结构的初步混合接头分析

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2024-01-05 DOI: 10.37358/mp.23.4.5687

Raul Cormoş, C. Neagoe, Miruna Ciolca

{"title":"Preliminary Hybrid Joint Analysis for Aircraft Structures","authors":"Raul Cormoş, C. Neagoe, Miruna Ciolca","doi":"10.37358/mp.23.4.5687","DOIUrl":"https://doi.org/10.37358/mp.23.4.5687","url":null,"abstract":"\u0000Metal-composite joints, or hybrid joints are prevalent in aerospace structures due to their high strength and low weight. Such structures are usually found in areas where because of the load configuration, the use of composite materials is possible. Thereby, the analysis of such areas needs to consider both components, the metallic and the composite part. In this paper a hybrid joint is analyzed, consisting of a metallic stiffener, a multilayered honeycomb composite material, and joining fasteners, which constitute the joint between the isotropic and orthotropic materials. The present article has two main purposes: the first is to illustrate a pre-design procedure aimed to evaluate the load-carrying capability of a hybrid joint structure, thereby giving an estimate if the structure can withstand the given loading conditions; the second purpose is to present two types of finite element modeling techniques, one that captures the real geometric structure of the composite material and another which uses a simplified equivalent model, based on the desired level of evaluation of the composite material part. A comparison between the two models is made, highlighting the advantages and disadvantages of the two forms of evaluations. For the metallic parts - stiffener and fasteners, both static and fatigue analyses were performed, as fatigue failure represents the common service failure mode for this type of structural components.\u0000","PeriodicalId":18360,"journal":{"name":"Materiale Plastice","volume":"32 5","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139449682","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}

引用次数: 0