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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

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

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

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

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

An Analysis of Water Sorption of Some Composites Used in Dentistry 几种牙科用复合材料的吸水性分析

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2023-07-03 DOI: 10.37358/mp.23.2.5663

Özlem Akyüz Bege�, Hakan Bege�

{"title":"An Analysis of Water Sorption of Some Composites Used in Dentistry","authors":"Özlem Akyüz Bege�, Hakan Bege�","doi":"10.37358/mp.23.2.5663","DOIUrl":"https://doi.org/10.37358/mp.23.2.5663","url":null,"abstract":"\u0000This study aimed to investigate the water sorption levels of 3 different condensable bulk fill composites, two flowable bulk fill composites, two microhybrid composites, one nanofilled composite, and one nanohybrid composite material polymerized with the same beam device on the 14th and 30th days.We evaluated nine different composite materials. The materials were prepared as cylindrical blocks (n=7) with a diameter of 7 mm and a thickness of 2 mm and polymerized. Each sample was kept in distilled water for specified times and measured by the ISO 4049 method.We used The Kruskal-Wallis test to compare more than two independent groups where numerical variables had no normal distribution. The Dwass-Steel-Critchlow-Fligner test evaluated differences between the groups if the non-parametric tests were applied. We used The Wilcoxon test to compare the numerical variables without normal distribution (water sorption values in the 14th and 30th-day measurements for each cement material).For water sorption, there was no statistically significant difference between the water sorption values of the resin composite materials on the 14th and 30th days. No statistically significant difference was found in comparing water sorption values between the 14th and 30th measurements for each resin composite material. There is a need for more extended studies by keeping the conditions constant for the evaluated composites and for bulk fill composites to be evaluated with 4mm samples.\u0000","PeriodicalId":18360,"journal":{"name":"Materiale Plastice","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48363727","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

Application of the Six Sigma Method to Improve Vulcanization Times in Automotive Tires 六西格玛方法在提高汽车轮胎硫化时间中的应用

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2023-07-03 DOI: 10.37358/mp.23.2.5660

Ion Durbacă, Nicoleta Sporea, G. Tomescu, A. Dumitrescu

引用次数: 0

About Some Mechanical Properties Regarding Sandwich Samples Reinforced with Poplar Strips and the Core from Crushed Corn Cobs with Hybrid Dammar-Based Matrix 用混合Dammar基基质研究杨条和玉米棒芯增强夹层样品的一些力学性能

IF 0.8 4区材料科学

Materiale Plastice Pub Date : 2023-07-03 DOI: 10.37358/mp.23.2.5666

A. I. Rădoi, M. Stănescu, D. Bolcu, C. Miriţoiu, A. Rosca, M. Bogdan, C. Nicolicescu

引用次数: 0

Effect of Abrasive Water Jet Parameters on the Drilling of Aluminum Foam Sandwiched with Glass Fiber Polymer Composites 磨料水射流参数对泡沫铝夹层玻璃纤维聚合物复合材料钻孔的影响