Macromolecular Symposia最新文献_第6页

Modification Study of High-Temperature Resistant Rubber Based on Hydrogenated Nitrile Rubber (HNBR) / Polymide1212 (PA1212) Blend 氢化丁腈橡胶(HNBR) /聚酰胺1212 （PA1212）共混改性耐高温橡胶的研究

Macromolecular Symposia Pub Date : 2025-08-28 DOI: 10.1002/masy.70085

Chenjun Zhang, Xi Zhang, Xiaodan Liu, Yiheng Li, Xiaoqi Wang, Xu Jin, Man Shen, Lanqiong Zhang

{"title":"Modification Study of High-Temperature Resistant Rubber Based on Hydrogenated Nitrile Rubber (HNBR) / Polymide1212 (PA1212) Blend","authors":"Chenjun Zhang, Xi Zhang, Xiaodan Liu, Yiheng Li, Xiaoqi Wang, Xu Jin, Man Shen, Lanqiong Zhang","doi":"10.1002/masy.70085","DOIUrl":"https://doi.org/10.1002/masy.70085","url":null,"abstract":"<div>\u0000 \u0000 Specialty engineering rubber has been put forward with more stringent requirements. In this paper, the material properties and reinforcing effects of several fillers were investigated, and polyamide was selected as the target reinforcing material to modify hydrogenated nitrile butadiene rubber (HNBR) in order to improve the temperature resistance of the system. It was concluded that the mechanical properties of PA1212/HNBR system were better than those of PC/HNBR system at 120°C. The optimum PA1212 additive amount was determined through the mechanical property test and dispersion state observation of the blended system, which proved that the PA1212 reinforcing system significantly improved the heat resistance and mechanical properties of HNBR. The modified HNBR has excellent tensile strength and elasticity, which effectively improves the reliability and service life of the sealing equipment under high temperature conditions, and provides experimental references and theoretical basis for the research and development of high-temperature resistant rubber.\u0000 </div>","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144910013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Title Page 414-4 标题页414-4

Macromolecular Symposia Pub Date : 2025-08-28 DOI: 10.1002/masy.70105

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Microemulsion Mediated Organically Modified Silica-Based Sensors for Electrocatalysis 微乳液介导的有机改性硅基电催化传感器

Macromolecular Symposia Pub Date : 2025-08-28 DOI: 10.1002/masy.70096

Aman Rana, Nancy Jaswal, Sujeet Kumar Chaurasia, Manoj K. Singh, Pramod Kumar

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Redesign of Structural Elements of Passenger Seat Based on Circular Economy Principles 基于循环经济原则的汽车座椅结构元件再设计

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70063

Michele Perrella, Amedeo Di Marco, Matteo Bruno, Enrico Armentani

{"title":"Redesign of Structural Elements of Passenger Seat Based on Circular Economy Principles","authors":"Michele Perrella, Amedeo Di Marco, Matteo Bruno, Enrico Armentani","doi":"10.1002/masy.70063","DOIUrl":"https://doi.org/10.1002/masy.70063","url":null,"abstract":"A product's environmental impact spans its entire lifecycle, from creation to disposal. The circular economy aims to eliminate this impact and resource waste by closing resource flow loops. In this perspective, circular design strategies are essential in achieving this goal. The end-of-life products should allow for easy material separation to enable reintegration into production cycles. In this work, design strategies that favor circularity, such as design for disassembly and design for recovery, were considered. The modular redesign of a passenger vehicle seat armrest was conducted with the purpose to achieve modularity, lightness, comfort improvement, easy maintenance, and reconfigurability of the armrest assembly. Finite element virtual tests were performed by using Ansys Workbench, in order to simulate, respectively, a loading condition according to NF F31-119 standard and an act of vandalism to separate the coupled parts of the new armrest. The results obtained in terms of strength and stiffness of the redesigned train seat armrest were considered satisfactory.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/masy.70063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Laser Surface Texturing of Biodegradable Polymers 生物可降解聚合物的激光表面变形

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70053

Petronela-Daniela Rusu (Ostahie), Simona-Nicoleta Mazurchevici, Catalin Tampu, Constantin Carausu, Ciprian Dumitru Ciofu, Dumitru Nedelcu

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Optimization of Real-Time Monitoring and Control of Industrial Conveyor Systems Using Vision Automated Identification Methods 基于视觉自动识别方法的工业输送系统实时监控优化

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70037

Nicolae Tunsoiu, Andrei Staicu, Daniela Tunsoiu, Mihaela-Elena Ulmeanu, Cristian-Vasile Doicin

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Predicting the Residual Life of Spur Gears Using the SED Method 用SED方法预测直齿齿轮的剩余寿命

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70056

Donato Perfetto, Nima Rezazadeh, Mario Munno, Stefano Beneduce

{"title":"Predicting the Residual Life of Spur Gears Using the SED Method","authors":"Donato Perfetto, Nima Rezazadeh, Mario Munno, Stefano Beneduce","doi":"10.1002/masy.70056","DOIUrl":"https://doi.org/10.1002/masy.70056","url":null,"abstract":"Ensuring sustainability in the industrial sector is a global priority, encompassing environmental, economic, and social dimensions. Achieving this objective requires the development of efficient strategies for product value retention, including numerical finite element (FE) models to predict component life and optimize resource utilization. For spur gears, as an example, accurate FE models are essential to replicate experimental behavior and estimate the number of cycles to failure (Nf) under operational loads. This study applies the local average strain energy density (SED) method to predict the residual life, that is, Nf, of a spur gear under varying operational loads ranging from 68 kN to 95 kN. A systematic approach was adopted: (i) developing geometric and FE model (using 2-D plane strain elements) of the gear to replicate an existing experimental setup, (ii) determining a suitable control radius R0 to define the control volume for SED calculation, and (iii) validating the FE model against experimental data. The use of R0 was instrumental in accurately capturing the energy density distribution, enabling precise residual life predictions. Results showed good agreement between SED values and experimental data, confirming that higher load levels led to increased SED values, which in turn resulted in lower Nf.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/masy.70056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Recyclable Composite Materials for the Upholstered Furniture Industry 用于软垫家具行业的可回收复合材料

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70039

Cornel Ciupan, Emilia Ciupan, Mihai Ciupan

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3D Printed Materials with Electrical Properties Tailored for Thermal Management 为热管理量身定制的具有电性能的3D打印材料

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70030

Marialuigia Raimondo, Francesca Aliberti, Elisa Calabrese, Roberto Pantani, Teresa Rosaria Verde, Andrea Sorrentino, Liberata Guadagno

{"title":"3D Printed Materials with Electrical Properties Tailored for Thermal Management","authors":"Marialuigia Raimondo, Francesca Aliberti, Elisa Calabrese, Roberto Pantani, Teresa Rosaria Verde, Andrea Sorrentino, Liberata Guadagno","doi":"10.1002/masy.70030","DOIUrl":"https://doi.org/10.1002/masy.70030","url":null,"abstract":"FDM (fused deposition modeling) 3D-printed parts, based on acrylonitrile butadiene styrene (ABS) with multi-walled carbon nanotubes (MWCNTs), are manufactured to obtain different multi-scale configurations of the internal conductive pathways. By appropriately selecting materials and printing parameters, it is possible to align MWCNTs along the printing direction, leading to an increase of electrical conductivity from 6.88 × 10−2 S/m before printing to 1.19 × 101 S/m of a single printed filament. Consequently, the conductive network arrangement through the sample justifies the higher electrical conductivity parallel to the printing direction (1.22 S/m) than its value perpendicularly measured (7.34 × 10−2 S/m) in 3D-printed samples. This approach, together with a suitable choice of the electrical contact position, allows controlling the flow of the electrical current, conferring parts the ability to heat up when subjected to an electrical source selectively. This energy-saving strategy can be advantageously applied to print quickly, in a single step, electronic devices, thermistors capable of converting electrical energy into thermal energy, heat exchangers, and electromagnetic interference (EMI) and radio frequency interference (RFI) shielding.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/masy.70030","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Electrical Behavior of Nanocomposites Exposed to Water Sorption 纳米复合材料在水吸附下的电学行为

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70027

Luigi Vertuccio, Francesca Aliberti, Raffaele Longo, Liberata Guadagno

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