最新刊期
- 摘要：With the increasing emphasis on engineering practice in the cultivation of Polymer Materials and Engineering, the course Fundamentals of Materials Science faces growing demands for stronger professional alignment and closer integration with practical applications. Considering the diverse student backgrounds at Zhejiang University and the presence of cross-disciplinary course enrollment, systematic adjustments have been made to the organization of course content and instructional approaches. By optimizing the sequence of theoretical development, strengthening polymer-related relevance, incorporating engineering-based case studies, and refining teaching organization with digital support, the course enhances professional orientation while maintaining the integrity of the fundamental materials theory. Teaching outcomes indicate a steady improvement in students’ average scores (from 78.4 to 81.6), with increased classroom engagement and a stronger sense of professional relevance. This teaching practice provides a useful reference for optimizing foundational materials courses for increasingly diversified student structures.关键词：Fundamentals of materials science;Polymer materials and engineering;Teaching reform;Professional compatibility;Practice integration26|14|0更新时间：2026-07-14
- 摘要：A PIF@Cu composite current collector was prepared using polyimide foam (PIF) as a lightweight porous substrate through a glyoxylic acid-based formaldehyde-free electroless copper plating process combined with a palladium-free silver activation strategy. The effects of bath pH, temperature, glyoxylic acid concentration, and plating time on the deposition rate and electrical conductivity were systematically investigated. The optimal performance was obtained at pH 12.5, 60 ℃, a glyoxylic acid concentration of 0.1762 mol·L–1, and a plating time of 60 min, giving a deposition rate of 15.71 μm·h–1 and a sheet resistance of 2.805 mΩ·sq–1. The obtained PIF@Cu showed good adhesion, thermal stability, and conductive stability under deformation. After 500 bending cycles, the increase in sheet resistance was 25.0%, lower than that of Cu foil. When used as the anode current collector in a CR2032 lithium-metal half-cell, the capacity retention after 200 cycles was 94.22%, higher than 92.40% for the Cu foil-based cell, and the specific capacity at 2C reached 150.0 mAh·g–1, higher than 128.0 mAh·g–1 for the Cu foil-based cell. In addition, PIF@Cu exhibited a lower areal density and a higher gravimetric energy density than commercial Cu foil. These results indicate that PIF@Cu has advantages over commercial Cu foil in lightweight design, conductive stability, and electrochemical performance.关键词：Polyimide foam;Composite current collector;Palladium-free;Glyoxylic acid;Electroless copper plating40|101|0更新时间：2026-05-29
- 摘要：In response to the new requirements for the cultivation of talent under the new engineering and engineering education accreditation, and in line with the distinctive characteristics of Dalian Polytechnic University, this study aims to develop a first-class undergraduate curriculum oriented toward cultivating high-level applied engineering and technical talents. Driven by gold-standard courses and guided by distinguished faculty, a “four-in-one” reform and innovation has been implemented for the polymer materials and engineering curriculum group. This reform encompasses the optimization and restructuring of teaching content, diversified innovation in teaching methods, organic integration of curriculum-based ideological and political education, and effective establishment of a teaching quality assurance system. As a result, the quality of talent cultivation has been continuously enhanced.关键词：Polymer materials and engineering;New engineering;Engineering education certification;Course group43|35|0更新时间：2026-05-29
- 摘要：A UV-curable acrylated polysiloxane was prepared from octamethylcyclotetrasiloxane (D4) and 3-methacryloxypropylmethyldimethoxysilane (KH-571) via ring-opening polycondensation, which is simple, low-cost, and highly efficient. The molecular structure, photopolymerization kinetics, mechanical properties, and thermal stability of the resultant material were systematically investigated using multiple characterization techniques, including real-time infrared spectroscopy (RTIR), Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) spectroscopy, and thermogravimetric analysis (TG). The experimental results demonstrated that the acrylated polysiloxane possessed excellent rapid photopolymerization capability, with the double bond conversion rate increasing significantly as the acryloyloxy group content increased. The prepared samples exhibited superior mechanical properties and thermal stability, which could be effectively regulated by adjusting the reactant ratio. Specifically, sample PSi-15, with a methyl-to-acryloyloxy chain segment ratio of 15:1, had the highest acryloyloxy group content and crosslinking degree, thereby exhibiting the optimal tensile strength (616.32 kPa). In contrast, sample PSi-50 had a lower acryloyloxy group content, and the flexible Si―O―Si segments endowed the polymer with good molecular flexibility. At this reactant ratio, the sample achieved a favorable balance between strength and flexibility, showing the best toughness (92.31 kJ/m3). Owing to its readily available raw materials, low cost, high curing efficiency, and tunable performance, this UV-curable polysiloxane has broad application prospects in relevant fields.关键词：UV-curing;Silicone materials;Acrylated;Polysiloxane;Free radical UV-curing54|46|0更新时间：2026-05-29
- 摘要：In response to the Ministry of Education’s call for “research feeding back into teaching” and to address the low prevalence of experiments on organic polymer porous materials in undergraduate teaching, this study leverages the research group’s preliminary achievements to transform the high-performance sponge preparation technology based on the Hofmeister effect into an undergraduate experimental teaching project. In this experiment, we used poly(vinyl alcohol) (PVA) as the raw material and glycerol, calcium chloride, and sodium citrate as additives, achieving the sol-gel transition of PVA solution through the synergistic effects of multiple components, successfully producing hydrophilic porous sponges. The experimental principles are intuitive, the operational difficulty aligns with the theoretical knowledge and skill levels of undergraduates, and the phenomena are distinct with strong extensibility. It has been successfully implemented in the “comprehensive experiments” course for chemical engineering and technology majors at Fuzhou University. Teaching practice demonstrates that students can complete the entire process from material synthesis to performance testing, not only deepening their understanding of relevant theoretical knowledge and enhancing their comprehensive practical abilities, but also stimulating research interest and innovative thinking, providing a valuable model for building a new engineering experimental curriculum system that integrates science and education.关键词：Hofmeister effect;Poly(vinyl alcohol);Sponge;Feeding back of research into teaching;New engineering experiments63|32|0更新时间：2026-05-11
- 摘要：The advancement of intelligent manufacturing is driving the evolution of polymer processing into a new developmental stage. Artificial intelligence technologies, particularly machine learning (ML), have become key enablers for overcoming the limitations of traditional empirical methods and achieving intelligent optimization of processing workflows. In response to the current gap between ML education and real engineering applications in polymer materials curricula, this study introduces a teaching innovation that integrates data-driven intelligence with professional practice through an undergraduate hollow blow molding experiment. Specifically, a hybrid approach combining a BP neural network with a genetic algorithm was applied to optimize five critical process parameters in hollow blow molding: die temperature, mold closing speed, airflow rate, blowing time, and cooling time. A predictive model was developed to identify the optimal parameter set for maximizing the vertical compressive strength of molded parts. Experimental validation confirmed the effectiveness of this approach, establishing a complete instructional loop encompassing component fabrication, data collection, model building, algorithmic optimization, and result verification. The redesigned course not only strengthens students’ mastery of conventional polymer processing techniques but also guides them through the entire workflow of applying ML to real-world process optimization. This initiative effectively bridges ML theory with practical manufacturing scenarios, while deepening students’ understanding of the “process-structure-property” relationship in polymer science and fostering computational thinking framed around “data-model-decision”. The project offers a replicable model for cultivating talent capable of supporting the transformation and upgrading of the intelligent polymer manufacturing industry.关键词：Hollow blow molding;Machine learning;Teaching innovation;Curriculum development;Polymer processing49|57|0更新时间：2026-05-09
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