最新刊期
- 摘要：Metal corrosion is a serious problem in the industrial field, and traditional anti-corrosion coatings are prone to cracking during service owing to mechanical stress or environmental erosion, leading to a decline in protective performance and difficulties in repair. Self-healing anti-corrosion coatings have become a key research focus in the field of corrosion protection owing to their intelligent repair characteristics, which autonomously restore anti-corrosion functions without frequent manual intervention. This paper systematically reviews the research progress of self-healing anti-corrosion coatings, focusing on the analysis of the repair mechanism, preparation methods, and performance characteristics of the two major systems, namely, externally assisted and intrinsically assisted coatings. With the help of microcapsules or nanocontainers loaded with restorative agents or corrosion inhibitors, when the coating is damaged, the restorative agents are released to fill the cracks, or the corrosion inhibitors react with the substrate to form a protective film, which improves the anticorrosion performance and realizes self-healing. Intrinsic coatings rely on the dynamic chemical bonding and shape memory effect of the coating itself and can repair damage through the reversible reorganization of these chemical bonds or molecular chain movement without external additives.关键词：Self-healing;Anti-corrosion;Intrinsic type;Extrinsic type4|0|0更新时间：2026-06-30
- 摘要：In the context of emerging engineering education and the development of first-class undergraduate courses, reforming practical teaching in specialized courses is of paramount importance. To address challenges in plastics engineering courses within the polymer materials and engineering program, such as difficulty in understanding abstract mechanical structures and principles and low student engagement, this paper explores the methods and practices of applying self-made teaching aids in course teaching. The teaching team designed and fabricated a series of key structural models, including screws, extruders, and injection molds, using 3D software and 3D printing technology, transforming two-dimensional images into observable and operable objects for application in classroom teaching of Plastics Processing Machinery, Plastics Processing Technology, and Plastic Mold Design courses. Additionally, a multifunctional product simulator and a supporting data acquisition system were designed and constructed for the Logistics Transport Plastic Packaging course, enabling intuitive verification of packaging protection effectiveness. Teaching practice demonstrates that the application of these self-made aids concretizes abstract theories, effectively stimulates students’ interest in learning, deepens their understanding of professional knowledge, and significantly enhances classroom teaching effectiveness. This provides a valuable reference for the reform of classroom and practical teaching in engineering programs.关键词：Polymer materials and engineering;Plastics engineering;Course construction;Teaching aid design;3D printing10|8|0更新时间：2026-06-25
- 摘要：Quinoxaline units have been widely employed in the construction of high-performance wide-bandgap polymer donors due to their moderate electron-deficient characteristic, strong quinoid form and multiple sites for structural modification. In this work, two novel polymer donors, PQx-1 and PQx-2, are designed and synthesized using phenyl-substituted quinoxaline as the electron-deficient unit. The positional isomerism of the alkoxy chain on the phenyl group can significantly influence the material properties. When the alkoxy chain is located at the meta-position of phenyl group, polymer PQx-2 exhibits a deeper HOMO energy level, favorable phase-separated morphology, and higher hole/electron mobilities compared with polymer PQx-1 featuring para-position substituted phenyl group. Consequently, the device based on PQx-2:BTP-eC9 can achieve a remarkable power conversion efficiency (PCE) of 17.16% using the non-halogenated solvent o-xylene as the processing solvent, significantly outperforming the photovoltaic performance of polymer PQx-1. The results demonstrate that positional isomerism of side chains can effectively tune the photovoltaic properties of materials, providing a viable strategy for the development of non-halogenated solvent processable wide bandgap polymer.关键词：Organic solar cells;Wide bandgap polymer donors;Quinoline;Positional isomerism;Non-halogen solvents13|23|0更新时间：2026-06-12
- 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 plating22|18|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 group30|14|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-curing20|16|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 experiments44|11|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 processing32|37|0更新时间：2026-05-09
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