Academic literature on the topic 'Thermoplastic acrylic resin'
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Journal articles on the topic "Thermoplastic acrylic resin"
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A. Hatim, Nadira, Amer A. Taqa, and Sufian A. Yassin. "Modification of heat cured acrylic resin by using additives to make a flexible acrylic resin denture base material: A pilot study." Edorium Journal of Dentistry 3, no. 1 (February 5, 2016): 1–11. http://dx.doi.org/10.5348/d01-2016-14-oa-1.
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Aims: The study was conducted to modify heat cured acrylic resin denture base material with additives [flavoring agents (caramel, banana)], and plasticizer into a flexible heat cured acrylic resin as a Flexite thermoplastic material. Methods: One hundred ninety-five samples of heat cured acrylic resin (HCAR) that consist of control group and three types of additives with two concentrations 15%, and 20% [flavoring agents (caramel, banana)], and plasticizer di-butyl phthalate (DBP) addition to (HCAR) 20% group, plasticizer (DBP) addition to (HCAR) group, flavoring (caramel) addition to (HCAR) group, flavoring (banana) addition to (HCAR) group and flexite thermoplastic material group were prepared to examine tensile strength, water sorption, solubility, color change and dimensional accuracy. Results: Statistically significant differences were identified between groups with and without additives exhibited higher mean value of tensile strength of flexite thermoplastic group. Duncan's multiple range test, and ANOVA were done to evaluate the effect of additives against each additive, concentration and storage time of samples. The result showed that the dimensional accuracy, water sorption and solubility tests of the groups (caramel + plasticizer + heat cured acrylic resin) had statistically lower changes than other groups with additives but were still higher than control group and Flexite thermoplastic during seven days. They also showed color change between groups. The first group (caramel + plasticizer + heat cured acrylic resin) with the concentration of 20% showed lowest change in their properties when compared with the plasticizer group and the other groups of flavors additions (caramel and banana) after seven days and six months. Conclusion: Within the limitation of this research, it was concluded that all prepared samples with additives (caramel, banana, and plasticizer) have better properties than the control group except the Flexite thermoplastic group which showed to have a higher tensile strength than control group during the periods of two and seven days.
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Koesomawati, Ria. "DIFFERENCES IN THE NUMBER OF CANDIDA ALBICANS COLONIES ON ACRYLIC RESIN AND THERMOPLASTIC NYLON IN SOURSOP LEAF EXTRACT IMMERSION." Interdental Jurnal Kedokteran Gigi (IJKG) 17, no. 2 (December 22, 2021): 123–31. http://dx.doi.org/10.46862/interdental.v17i2.2931.
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Introduction: Denture stomatitis is a chronic inflammation caused by wearing dentures, mainly caused by Candida albicans. Heat-polymerized acrylic resins are often used as denture bases, but lack the ability to absorb liquids due to their porosity and surface roughness. The basis of the latest dentures is thermoplastic nylon because it is more aesthetically, hypoallergenic and more flexible. Soursop leaf extract contains alkaloids, tannins, flavonoids, and saponins as antifungal. The purpose of this study was to examinate whether there were differences in the number of Candida albicans colonies on heat-polymerized acrylic resin plates and thermoplastic nylon in soursop leaf extract immersion. Materials and Methods: The research design was an experimental pre-post test with control group design, n = 50 plates were divided into 2 groups, heat-polymerized acrylic resin (n=25) and thermoplastic nylon (n=25), divided into 5 groups, 3 treatment groups using 10%,15%,25% soursop leaf extract, Fittident®and aquadest in the control groups. Samples were contaminated with Candida albicans suspension and incubated, counted before immersion for 8 hours, then put in Saboroud’s bath and counted again. Results and Discussions: Wilcoxon test analysis showed significant differences in all groups, except the aquadest group. The Mann-Whitney test showed significant differences between the treatment groups, except between the 25% extract and the Fittident®control group. Also, showed a significant difference in the 15% concentration group between heat-polymerized acrylic resin and thermoplastic nylon. Conclusion:There was a difference in the decrease in the number of Candida albicans colonies on heat-polymerized acrylic resin plates and thermoplastic nylon in soursop leaf extract at a concentration of 15%, while at concentrations of 10% and 25% there was no difference
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Jawad, Dr Raya Mohammed. "Evaluation of the effect of hypochlorite cleanser on water sorption and solubility of flexible and conventional hot – cure – acrylic denture base. (A comparative study)." Mustansiria Dental Journal 11, no. 1 (February 26, 2018): 31–42. http://dx.doi.org/10.32828/mdj.v11i1.222.
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Background: One of the primary applications for thermoplastics flexible resinsinvolved flexible partial dentures tooth born and combination flexible andchromium cobalt framework partial denture. There are certain to be many newclinical applications for thermoplastic resins in dentistry. The cleansers effectmaturity of the sterilization of acrylic resin denture base; therefore, it usingchemical or physical methods can minimize the risk of periodontal disease such asdenture related stomatitis in denture users.This study aims: to evaluate of the effect of hypochlorite cleanser on the watersorptsion and solubility of flexible and conventional hot – cure acrylic resindenture base. Compare the results on the water sorption and solubility betweenspecimens.Methods: Sixty of flexible and hot –cured acrylic resin specimens were prepared asfollowing:30 samples from hot – cure acrylic divided into two group 15 specimens immersein the hypochlorite and 15 specimens immerse in the water. The process is curedin the water bath according to the conventional method. 30 specimens fromflexible resin divided into two group 15 specimens immerse in the hypochloriteand 15 specimens immerse in the water. The process is cured in the plasticinjection machine.Results: showed highly significant differences among these groups. It showed that thehot – cured acrylic high water sorption and lower solubility and the flexible resinlower water sorption and high solubility.Conclusion:1. The comparison between the hot –cured acrylic and flexible resin denture baseimmersed in the hypochlorite and water on the water sorption is higher of thehot –cure acrylic and lower of the flexible resin.2. The flexible resin denture base immersed in the hypochlorite and water ishigher solubility compared with the hot –cured acrylic is lower solubility.
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Yerro, O., V. Radojevic, I. Radovic, M. Petrovic, P. S. Uskokovic, D. B. Stojanovic, and R. Aleksic. "Thermoplastic acrylic resin with self-healing properties." Polymer Engineering & Science 56, no. 3 (December 10, 2015): 251–57. http://dx.doi.org/10.1002/pen.24244.
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A. Alabady, Alkasim, and Bayan S. Khalaf. "Bond Strength Of Acrylic Soft Liner To Nd:Yag Laser-Treated Thermoplastic Acrylic Denture Base Material." 3C Tecnología_Glosas de innovación aplicadas a la pyme 12, no. 01 (March 31, 2023): 354–64. http://dx.doi.org/10.17993/3ctecno.2023.v12n1e43.354-364.
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Aim of the study: Using surface roughness and tensile bond strength tests, the objective of this investigation was to ascertain the impact of laser surface modification on the binding strength of injectable thermoplastic acrylic denture base material to acrylic-based soft-liner material. Materials and methods: Acrylic base soft liner material was bonded to injectable thermoplastic acrylic resin (Deflex). Forty specimens were created (20 disc, 20 dumbbells) 10 of each specimen type as control specimens, and 10 were treated with nano pulse Nd: YAG laser. The data were analyzed using the Kruskal-Wallis test and unpaired t-test (a=.05) and the roughness test was performed utilizing a double column universal test machine. Results: Compared to the control groups, the laser group had much increased roughness and tensile bond strength. Conclusions. Following Nd:YAG laser surface treatment, the tensile bonding strength between acrylic soft-liner material and thermoplastic acrylic was increased.
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Perrin, Henri, Masoud Bodaghi, Vincent Berthé, Sébastien Klein, and Régis Vaudemont. "On the Hot-Plate Welding of Reactively Compatibilized Acrylic-Based Composites/Polyamide (PA)-12." Materials 16, no. 2 (January 10, 2023): 691. http://dx.doi.org/10.3390/ma16020691.
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Joining of dissimilar thermoplastics and their composites is a challenge for thermal welding techniques due to different melting points. Reactive welding with an auxiliary functional material can offer the clear opportunities to develop joining processes due to robustness to joining dissimilar thermoplastic polymers and their composites. The current study employed reactive compatibilization to offer the possibility of joining an acrylic-based glass fiber composite to polyamide (PA)-12 by applying a hot-tool welding technique. For this purpose, composite plates are fabricated by a typical vacuum infusion and thin layer thermoplastic films are formed by a thermostamping of PA12 granules. Subsequently, the reactive welding of the interposed PA12 sheet and Elium®-GMA-Glass composite is conducted by hot-plate welding. A glycidyl methacrylate (GMA) as a compatibilizing agent is copolymerized with methyl methacrylate Elium® resin. During the hot-tool welding process of dissimilar thermoplastic material, GMA can react with the polyamide end groups. The heat distribution at the Elium® GMA/PA-12 interface is responsible for obtaining a strong joint. This study focuses on the functionality of the compatibilizer on the welding of acrylic-based composites with polyamide (PA)-12 while varying the assembly temperature. The flatwise tensile test proved the effectiveness of GMA on the interface bounding. The excellent bounding incompatible polymers Elium® resin (PMMA) and PA12 was achieved at 200 °C.
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Nam, Gwan-woo. "Study on Method Make Polymerization Resin and Thermoplastic Acrylic Resin Denture." Korean Journal of Security Convergence Management 7, no. 3 (August 31, 2018): 329–41. http://dx.doi.org/10.24826/kscs.7.3.25.
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Shrestha, Bidhan, E. Richard Hughes, Raj Kumar Singh, Pramita Suwal, Prakash Kumar Parajuli, Pragya Shrestha, Arati Sharma, and Galav Adhikari. "Fabrication of Closed Hollow Bulb Obturator Using Thermoplastic Resin Material." Case Reports in Dentistry 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/504561.
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Purpose.Closed hollow bulb obturators are used for the rehabilitation of postmaxillectomy patients. However, the time consuming process, complexity of fabrication, water leakage, and discoloration are notable disadvantages of this technique. This paper describes a clinical report of fabricating closed hollow bulb obturator using a single flask and one time processing method for an acquired maxillary defect. Hard thermoplastic resin sheet has been used for the fabrication of hollow bulb part of the obturator.Method.After fabrication of master cast conventionally, bulb and lid part of the defect were formed separately and joined by autopolymerizing acrylic resin to form one sized smaller hollow body. During packing procedure, the defect area was loaded with heat polymerizing acrylic resin and then previously fabricated smaller hollow body was adapted over it. The whole area was then loaded with heat cure acrylic. Further processes were carried out conventionally.Conclusion.This technique uses single flask which reduces laboratory time and makes the procedure simple. The thickness of hollow bulb can be controlled and light weight closed hollow bulb prosthesis can be fabricated. It also minimizes the disadvantages of closed hollow bulb obturator such as water leakage, bacterial infection, and discoloration.
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Bhudolia, Somen K., Goram Gohel, Durga Vasudevan, Kah Fai Leong, and Pierre Gerard. "Behaviour of Rectangular Hollow Thin Ply Carbon Thermoset and Thermoplastic Composite Tubes Subjected to Bending." Polymers 14, no. 7 (March 29, 2022): 1386. http://dx.doi.org/10.3390/polym14071386.
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Tubular composites are widely used in many industrial applications, and there is need to use new material and reliable manufacturing processes to improve the performance and process aspects. The current research presents a detailed study to understand the flexure response of rectangular tubular composites based on thin ply carbon fibres and Elium® resin. Another aim was to understand the failure mechanisms of novel tubular thermoplastic composite systems and carry out a baseline comparison with Epoxy-based tubular systems. In the current research, a bladder-assisted resin transfer moulding process was used to manufacture hollow thermoplastic composite tubes, and the bending behaviour of thin ply carbon (TPC) composite parts with novel Elium® (EL) and Epoxy (EP) resin as the matrix material was studied using a detailed experimental study. A testing method with optimized support span and a saddle was used to carry out three-point bending tests on the tubular composite structures. The TPC/EL composite tubes have shown 10% higher bending strength, with a noticeable increase in deformation due the presence of extended plasticity attributes for acrylic Elium resin. Failure mechanisms studied with the detailed microscopic investigation have shown severe catastrophic failure for epoxy-based composite tubes; however, acrylic Elium®-based composite tubes have shown different damage modes such as fibre splitting, resin infragmentation, and fibre resin-interfacial cracking.
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Yan, Xie, Tang Cheng, Li Mu, and Liu Jing. "Development of Corona Prevention Coatings for 750kV Substation in Operation." International Journal of Circuits, Systems and Signal Processing 17 (December 31, 2023): 194–200. http://dx.doi.org/10.46300/9106.2023.17.23.
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A single acrylic resin has poor conductivity and toughness, but strong hydrophilicity, which limits its application in high-voltage transmission corona prevention. In response to this issue, this article investigates the preparation of four types of acrylic composite conductive coatings with different additions of carbon fiber powder, multi-walled carbon nanotubes, and nano titanium dioxide. Through experimental testing, compare and analyze the effects of various fillers on the mechanical properties, conductivity, hydrophobicity, and heat resistance of acrylic composite conductive coatings. The experimental results show that the acrylic conductive coating prepared with thermoplastic acrylic resin as the matrix, carbon fiber powder and multi-walled carbon nanotubes as conductive fillers, and nano titanium dioxide as a self-cleaning agent has excellent performance characteristics in all aspects, and is suitable for corona prevention in ultra-high voltage transmission. This acrylic composite coating can be used to repair burrs and scratches on the surface of transmission lines, fill gaps in stranded wires, and achieve the goal of reducing the local electric field of high-voltage transmission lines to prevent wire corona.
Dissertations / Theses on the topic "Thermoplastic acrylic resin"
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Charlier, Quentin. "Adhesion phenomena in thermoplastic composites based on acrylic matrices obtained by free radical polymerization." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI140.
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Ce mémoire de thèse s’intéresse aux phénomènes d’adhésion dans des composites à matrice thermoplastique obtenus par polymérisation radicalaire de mélanges réactifs. Après une courte introduction bibliographique sur les thématiques d’adhésion et d’adhérence, les propriétés générales des principaux éléments constitutifs des assemblages finaux sont étudiées séparément pour discuter de leur pertinence en vue d’une application composite. Une attention particulière est portée sur les systèmes réactifs acryliques à l’état liquide. L’étude se concentre ensuite sur les mécanismes réactionnels et l’évolution des propriétés des systèmes réactifs lors de la polymérisation. Ces problématiques sont de première importance pour anticiper les mécanismes gouvernant l’adhésion dans les composites obtenus mais aussi pour appréhender les potentielles problématiques à venir lors des étapes de mise en forme. Enfin, une étude est spécifiquement dédiée au cas de l’adhésion entre matrice acrylique et fibres de verre dans des composites à fibres de renfort continues. Les propriétés à l’interface verre/acrylique ont été évaluées à l’échelle microscopique dans des systèmes modèles et à l’échelle macroscopique dans des composites unidirectionnels, c'est à dire pouvant les défauts d’adhésion générés lors de la mise en forme. L’ensemble de ces résultats permet de se positionner quant à l’utilisation de solutions acryliques thermoplastiques pour des applications composites structurauxThese PhD research works focus on adhesion phenomena involved in thermoplastic composites based on acrylic matrices obtained by free radical polymerization. After a short bibliographic section introducing some basics on adhesion phenomena and practical adhesion measurements, properties of elementary constituents are assessed to discuss their relevancy for composite applications. Special attention is paid to acrylic reactive systems and properties of acrylic resins at liquid state. Then, the reaction mechanisms involved in free radical polymerization are detailed. The changes in acrylic system properties during polymerization are investigated to anticipate further processing-related issues. At last, a study is dedicated to the assessment of interfacial adhesion between glass fiber and acrylic matrices in fiber reinforced composites. Interfacial properties are characterized at microscale in model systems and at macroscale in real-sized composites, i.e. integrating process-induced defects. From overall results, the relevancy of acrylic thermoplastic solutions for structural composite applications is discussed
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Kinvi-Dossou, Gbèssiho Raphaël. "Étude de la résistance à l’impact et de l’endommagement des composites stratifiés à matrice Elium acrylique : caractérisation expérimentale et modélisation numérique multi-échelle." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0249/document.
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Face aux défis environnementaux actuels, les industriels ont mis en œuvre de nouveaux matériaux recyclables et permettant une réduction significative de la masse. Le développement de la résine thermoplastique Elium par ARKEMA s’inscrit dans cette problématique. L’utilisation de cette résine pour la fabrication de pièces composites qui peuvent être sujettes à des dommages d’impact, nécessite au préalable des études, dans le but de comprendre leurs mécanismes de ruine sous ce type de sollicitation. Ainsi, la présente thèse propose une contribution à l’analyse multi-échelle de la tenue à l’impact des composites stratifiés à base de la résine Elium. Une étude expérimentale préliminaire a permis de confirmer la meilleure résistance à l’impact des composites à matrice Elium acrylique, comparativement à celles des composites thermodurcissables conventionnels. Ensuite, les performances à l’impact des composites stratifiés ont été améliorées par l’introduction de copolymères à blocs dans la matrice. Ces derniers sont capables de former des micelles de tailles nanométriques et ainsi d’améliorer la ténacité de la matrice acrylique. Les effets de l’énergie d’impact, de la température et de la composition en nanocharges sur la réponse du matériau composite ont été analysés. Afin de proposer un outil d’aide à la prédiction de la réponse à l’impact des matériaux fibres de verre/Acrylique, deux stratégies de modélisation ont été retenues. La première modélisation (macroscopique) considère le pli tissé du stratifié comme un matériau homogène tandis que la seconde (mésoscopique) utilise une description géométrique de l’ondulation et de l’entrecroisement des torons noyés dans la résine Elium. Ces deux modèles considèrent des zones cohésives à l’interface entre les plis adjacents pour simuler le délaminage interlaminaire. Des essais de délaminage (expérimentaux et numériques) ont permis d’alimenter le modèle d’endommagement de l’interface interplis. D’autre part, des essais de caractérisation du comportement mécanique et de l’endommagement du matériau couplés à l’homogénéisation multi-échelle des matériaux par la Mécanique du Génome de Structure ont permis d’identifier les paramètres du modèle macroscopique. A l’échelle mésoscopique, le modèle géométrique a été réalisé grâce au logiciel Texgen. Ce logiciel permet d’obtenir une description approchée mais réaliste de l’ondulation des torons de fibres. La même description a servi à l’homogénéisation numérique multi-échelle des stratifiés étudiés. La simulation numérique de l’impact basse vitesse a été effectuée au moyen du logiciel d’éléments finis ABAQUS/Explicit. Les modèles de comportement du matériau ont été implémentés via la routine utilisateur VUMAT. Les résultats obtenus offrent une bonne corrélation avec les données expérimentalesIn the race for light materials able of meeting modern environmental challenges, an acrylic resin (Elium) has been developed. Elium is a thermoplastic resin able to replace thermosetting matrices, which are widespread nowadays in the industrial world. The present study aims to evaluate the impact resistance and to understand the failure mechanisms of composite laminates based on acrylic matrix under impact loading. We provide a contribution to the multiscale analysis of the impact resistance of laminated composite.First, the impact resistance and the damage tolerance of the acrylic resin based composites were compared with those of conventional composites. Then, the impact performance of the laminated composites has been enhanced by adding copolymer blocks to the liquid acrylic resin. These copolymers are able to form micelles of nanometer sizes, which lead to the improvement of both the acrylic matrix fracture toughness and the impact resistance. The effects of the impact energy, temperature, and composition in nano-copolymers have also been investigated.In order to provide a numerical tool for the prediction of the impact response of the glass fiber/Acrylic laminates, two strategies have been analyzed. The first one, performed at the macroscopic scale, considers the woven ply of the laminate as homogeneous material, and the second one (at the mesoscopic scale), deals with a realistic geometrical description of the yarns undulation. Both models use cohesive zones at the interface between the adjacent plies, to simulate the delamination. For this purpose, experimental and numerical delamination tests were performed to feed the inter-ply damage model. Mechanical tests for material characterization were also performed on specimens in order to identify the ply-damage model parameters. The Mechanics of Structure Genome (MSG) and a finite element based micromechanics approaches were then conducted to evaluate the effective thermomechanical properties of the yarns and the plain woven composite laminate. The realistic topological and morphological textures of the composite were accounted through Texgen software. These numerical impact simulations were performed using the finite element software ABAQUS/Explicit. Both models were implemented through a user material subroutine VUMAT. The obtained results appear in a good agreement with the experimental data and confirm the relevance of the proposed approach
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Kinvi-Dossou, Gbèssiho Raphaël. "Étude de la résistance à l’impact et de l’endommagement des composites stratifiés à matrice Elium acrylique : caractérisation expérimentale et modélisation numérique multi-échelle." Electronic Thesis or Diss., Université de Lorraine, 2018. http://www.theses.fr/2018LORR0249.
Full textAbstract:
Face aux défis environnementaux actuels, les industriels ont mis en œuvre de nouveaux matériaux recyclables et permettant une réduction significative de la masse. Le développement de la résine thermoplastique Elium par ARKEMA s’inscrit dans cette problématique. L’utilisation de cette résine pour la fabrication de pièces composites qui peuvent être sujettes à des dommages d’impact, nécessite au préalable des études, dans le but de comprendre leurs mécanismes de ruine sous ce type de sollicitation. Ainsi, la présente thèse propose une contribution à l’analyse multi-échelle de la tenue à l’impact des composites stratifiés à base de la résine Elium. Une étude expérimentale préliminaire a permis de confirmer la meilleure résistance à l’impact des composites à matrice Elium acrylique, comparativement à celles des composites thermodurcissables conventionnels. Ensuite, les performances à l’impact des composites stratifiés ont été améliorées par l’introduction de copolymères à blocs dans la matrice. Ces derniers sont capables de former des micelles de tailles nanométriques et ainsi d’améliorer la ténacité de la matrice acrylique. Les effets de l’énergie d’impact, de la température et de la composition en nanocharges sur la réponse du matériau composite ont été analysés. Afin de proposer un outil d’aide à la prédiction de la réponse à l’impact des matériaux fibres de verre/Acrylique, deux stratégies de modélisation ont été retenues. La première modélisation (macroscopique) considère le pli tissé du stratifié comme un matériau homogène tandis que la seconde (mésoscopique) utilise une description géométrique de l’ondulation et de l’entrecroisement des torons noyés dans la résine Elium. Ces deux modèles considèrent des zones cohésives à l’interface entre les plis adjacents pour simuler le délaminage interlaminaire. Des essais de délaminage (expérimentaux et numériques) ont permis d’alimenter le modèle d’endommagement de l’interface interplis. D’autre part, des essais de caractérisation du comportement mécanique et de l’endommagement du matériau couplés à l’homogénéisation multi-échelle des matériaux par la Mécanique du Génome de Structure ont permis d’identifier les paramètres du modèle macroscopique. A l’échelle mésoscopique, le modèle géométrique a été réalisé grâce au logiciel Texgen. Ce logiciel permet d’obtenir une description approchée mais réaliste de l’ondulation des torons de fibres. La même description a servi à l’homogénéisation numérique multi-échelle des stratifiés étudiés. La simulation numérique de l’impact basse vitesse a été effectuée au moyen du logiciel d’éléments finis ABAQUS/Explicit. Les modèles de comportement du matériau ont été implémentés via la routine utilisateur VUMAT. Les résultats obtenus offrent une bonne corrélation avec les données expérimentalesIn the race for light materials able of meeting modern environmental challenges, an acrylic resin (Elium) has been developed. Elium is a thermoplastic resin able to replace thermosetting matrices, which are widespread nowadays in the industrial world. The present study aims to evaluate the impact resistance and to understand the failure mechanisms of composite laminates based on acrylic matrix under impact loading. We provide a contribution to the multiscale analysis of the impact resistance of laminated composite.First, the impact resistance and the damage tolerance of the acrylic resin based composites were compared with those of conventional composites. Then, the impact performance of the laminated composites has been enhanced by adding copolymer blocks to the liquid acrylic resin. These copolymers are able to form micelles of nanometer sizes, which lead to the improvement of both the acrylic matrix fracture toughness and the impact resistance. The effects of the impact energy, temperature, and composition in nano-copolymers have also been investigated.In order to provide a numerical tool for the prediction of the impact response of the glass fiber/Acrylic laminates, two strategies have been analyzed. The first one, performed at the macroscopic scale, considers the woven ply of the laminate as homogeneous material, and the second one (at the mesoscopic scale), deals with a realistic geometrical description of the yarns undulation. Both models use cohesive zones at the interface between the adjacent plies, to simulate the delamination. For this purpose, experimental and numerical delamination tests were performed to feed the inter-ply damage model. Mechanical tests for material characterization were also performed on specimens in order to identify the ply-damage model parameters. The Mechanics of Structure Genome (MSG) and a finite element based micromechanics approaches were then conducted to evaluate the effective thermomechanical properties of the yarns and the plain woven composite laminate. The realistic topological and morphological textures of the composite were accounted through Texgen software. These numerical impact simulations were performed using the finite element software ABAQUS/Explicit. Both models were implemented through a user material subroutine VUMAT. The obtained results appear in a good agreement with the experimental data and confirm the relevance of the proposed approach
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Fontanier, Jean-Charles. "Développement d'un système réactif pour composites acryliques par procédé RTM." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI024.
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Le contexte environnemental actuel conduit les constructeurs automobiles à diminuer les émissions globales de CO2. Afin de répondre à cet objectif, plusieurs voies sont accessibles mais l’allègement de la structure du véhicule apparaît comme la solution la plus prometteuse grâce à la substitution des pièces métalliques par des matériaux composites et plus particulièrement des composites thermoplastiques à matrices acryliques. Cette étude s’est donc intéressée à développer et caractériser plusieurs formulations à base acrylique afin d’identifier les différents leviers (choix du monomère / condition de polymérisation) permettant d’atteindre une polymérisation rapide (< 3 à 5 min) adaptée aux hautes cadences de l’industrie automobile. Le moulage par transfert de résine (RTM) ayant été choisi comme procédé de mise en œuvre, une seconde étape de travail a été de caractériser l’évolution de la viscosité au cours de la polymérisation. En disposant des mesures cinétiques et rhéologiques, il a aussi été possible, par modèle inverse, de proposer un suivi in-situ de la polymérisation via la corrélation des données par des mesures diélectrométriques. Puis, dans une optique d’amélioration de la tenue chimique du PMMA, la synthèse d’un polymère réversible présentant alternativement une structure tridimensionnelle et une structure linéaire a été réalisée. Ainsi, grâce à la préparation d’un comonomère présentant des fonctions Diels-Alder, il a été possible d’obtenir un polymère ayant la capacité d’emprunter les propriétés de résistance chimique des réseaux thermodurcissables tout en conservant l’aptitude à la transformation des thermoplastiques. Enfin, une dernière étude s’est portée sur le renforcement du PMMA par mélange avec différents polymères. Ainsi, grâce à un choix judicieux de polymères présentant des caractéristiques physico-chimiques intéressantes, il a été possible d’améliorer significativement la tenue en température mais également la résistance au choc de la matrice acrylique développéeNowadays, polymer matrix composites are widely used for aerospace, automotive, railway and sport industries. For similar structural properties, these materials coul be very attractive since they could be 30 to 40% lighter than metallic counterparts. In the current context of environmental development issues, thermoplastic-based composites, (in our case acrylic matrix based one), can be considered as they can be easily recycled as opposed to thermoset-based ones. Furthermore, they could exhibit good mechanical properties, i.e. stiffness and impact resistance, enabling them to be relevant for many applications. Manufacturing structural composites requires to produce parts without defects having complex geometries. For this purpose Resin Transfer Molding (RTM) has been selected to process such composites. Indeed, it corresponds to a low temperature closed-mold process allowing for manufacturing complex continuous fiber-based-reinforced parts. However, it requires precursors with a very low viscosity (η < 1 Pa.s) to ensure a good impregnation of the dry preform. To be cost effective, fast reactive systems have also to be selected. Thermoplastic polymers which own a very high viscosity in molten state cannot be directly used. Our strategy is to design an acrylic-based reactive formulation exhibiting a very low initial viscosity, i.e. about 100 mPa.s and which can subsequently polymerizes via a free radical mechanism once the mold is filled and the preform fully impregnated. Therefore, our main objective is to optimize curing conditions (especially thermal initiator ratios and temperature) of RTM-compatible acrylic-based reactive formulations to lead to suitable composite parts with high conversion rate, low residual monomer content and relevant process cycles
Book chapters on the topic "Thermoplastic acrylic resin"
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Kouassi, A. Y. E., R. Matadi Boumbimba, and M. K. Sangaré. "Effect of the Nanostrength® M53 on Elastic Properties of Glass Fiber Reinforced Acrylic Thermoplastic Resin." In Advances in Applied Mechanics, 1–15. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-49727-8_1.
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Obande, Winifred, and Dipa Ray. "Joining and repair of resin-infused, continuous fibre-reinforced, thermoplastic acrylic-matrix composites for extended applicability." In Composites Assembly for High Performance Fastener-less Structures, 93–115. Institution of Engineering and Technology, 2022. http://dx.doi.org/10.1049/pbme015e_ch5.
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Cosmina Ardelean, Lavinia, Laura-Cristina Rusu, Codruta Victoria Tigmeanu, Meda Lavinia Negrutiu, and Daniela Maria Pop. "Advances in Dentures: Novel Polymeric Materials and Manufacturing Technologies." In Advances in Dentures - Prosthetic Solutions, Materials and Technologies [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.113936.
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Acrylic resins dominated dentures technology for several decades. Due to their many disadvantages, new types of polymers, with better properties, suitable for dental prosthodontics applications were constantly attempted. The choice of polymeric materials and manufacturing technologies has experienced significant development in recent years. Different types of thermoplastic injected resins, light-cured resins, or the versatile high-performance polymers are several choices of novel materials for dentures manufacturing. CAD/CAM systems, both substractive and additive, are being considered the most promising choice for the future manufacturing of polymers in dentistry. The chapter is focused on presenting the choices of novel polymeric materials, their manufacturing technologies, and applications in prosthodontics.
Conference papers on the topic "Thermoplastic acrylic resin"
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SIDDIG, N. "Simulation and monitoring of the infusion of thick composites with thermoplastic acrylic resin." In Material Forming. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903131-64.
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Abstract. The ZEBRA project aims to advance the circular economy by creating wind turbine blades that can be completely recycled. Currently, Wind turbine blades are fabricated through Vacuum-Assisted Resin Infusion (VARI) using thermoset resins. In this endeavor, the recyclable thermoplastic resin Elium® from Arkema is utilized as a sustainable alternative to traditional thermoset resins. The production of thick and sizable components using reactive resins presents various intertwined physical aspects and difficulties, notably concerning potential overheating during the Elium® radical polymerization process. The optimization of this process necessitates the use of simulation to save the expensive time and effort caused by the experiments. However, to be reliable, these numerical methods must be validated to allow accurate predictions for potential defects with thick and complex parts. The challenge lies in flow front detection in the through-thickness direction. In this work, infusion tests were conducted for thick parts in a testing bench instrumented with a robust monitoring system. QRS sensors are placed through the part thickness to detect the front arrival instantaneously. The simulations are compared and validated to the signals of the QRS sensors for validation. Then the model was used to predict the flow behavior for more complex parts. A 3D flow is observed by the differences in permeability between the flow medium and the fabric, which induces a high difference in resin arrival times to the sensors depending on the position of sensors through the part thickness. The flow simulations showed a good approximation of the experimental results. However, deviations are observed in the flow front position, caused by the disturbance induced by the presence of the sensors.
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DENIS, Y. "Thermo-chemical modeling and simulation of glass/elium® acrylic thermoplastic resin composites." In Material Forming. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902479-34.
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Abstract. The recyclability limitations of wind blades significantly reduce their environmental benefit as a green energy source. Therefore, the use of new and sustainable materials is crucial. The Zero wastE Blade ReseArch project (ZEBRA), led by the French technical research center IRT Jules Verne, is looking to accelerate the industry transition to circular economy by designing and manufacturing the first 100% recyclable wind blades using the thermoplastic resin Elium®, developed by Arkema, with a consortium regrouping: LM Wind Power, Arkema, CANOE, Owens Corning, ENGIE and Suez. In this work, the polymerization kinetics of the reactive thermoplastic resin Elium® was characterized through isothermal and dynamic Differential Scanning Calorimetry (DSC) tests. The experimental curves are fitted to two different models from the literature; then the model parameters are identified and used as input to simulations. One model is selected and evaluated using a PAM-RTM© simulation for pure resin and the infusion of Owens Corning glass/Elium® composites [1]. The numerical results are compared with experimental data collected from Vacuum-assisted resin infusion (VARI) tests with the help of a robust monitoring system [2]. Then the model is used to predict the flow and polymerization behavior for thick and more complex parts.
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Tatman, G., A. Bahri, D. Zhu, A. D. Hill, and J. L. Miskimins. "Experimental Study of Proppant Transport Using 3d-Printed Rough Fracture Surfaces." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210196-ms.
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Abstract 3D printing is a type of additive manufacturing technology that allows for digital 3D models to be made into physical objects out of a wide range of thermoplastics, resins, and occasionally metals. In previous years, 3D printing models at high-resolution suitable for oil and gas research was either time consuming, cost-prohibitive, or limited to a small model build volume. However, the rapid advancement in resin 3D printing technology recently has allowed for a significant increase in production speeds and model size at little cost. In this study, we utilized 3D printed rough-wall fracture panels in a large-scaled proppant transport apparatus to evaluate the feasibility of repeatable and realistic experimental investigation by the 3D printing technology. Understanding proppant transport in hydraulically created fractures helps to answer the questions about proppant distribution, resultant fracture conductivity, effectiveness of fracture fluid and additives, and all leads to fracture treatment efficiency. In the past, lab experiments showed that fracture topography plays an important role on fracture conductivity, and the characteristics of fracture surfaces have been grouped as random distribution, channel, wavy and ledge (step-change). These surface features can be described by geostatistical parameters. For large-scale proppant transport, the realistic surfaces are difficult to create, and thus most studies have used smooth-surfaced parallel acrylic panels for the fracture walls. Stereolithography (SLA) resin 3D printers produce a physical model by using an ultraviolet light source to selectively illuminate and cure a photopolymer onto a travelling build platform. The physical models are based on a computer-generated surface with controlled statistical definition. We have successfully printed panels to build a 4ft X 2ft main fracture with a smaller fracture intersecting orthogonally. The panels are carefully printed with transparent resin to allow for video recording. Initial tests showed the mechanical integrity of printed fractures and proppant transport results. This paper describes the detailed procedure of generating fractures by 3D printing, experimental setup and the test results of proppant transport.