最新刊期
卷 35 ， 期 12 ， 2022
- 摘要：Porous materials have received great attention due to their potential applications in various fields. Mesoporous materials with channel sizes of 2-50 nm have high specific surface area and pore volume. Also, the nanochannels of mesoporous materials possess the confinement effects. Therefore, mesoporous materials are not only of importance in separation, adsorption, and catalysis, but also have great potential in energy storage, environmental treatment, and electronics. Controlled size and morphologies, as well as the chemistry of pore walls, are critical to the performance of mesoporous materials. Block copolymers can form ordered structures at mesoscopic scale through microphase separation, which provides an ideal platform for the preparation of mesoporous materials. In this review, the methods of preparing mesoporous materials via block copolymers are summarized.关键词：Block copolymers;Microphase separation;Mesoporous materials;Etching;Selective swelling
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发布时间：2022-10-17 - 摘要：Lithography is the core step of chip manufacturing. The lithography machine and photoresist are interdependent and indispensable in the lithography process. However, photoresist materials have received less attention although they are of the same importance as the lithography machine. On the one hand, there are few news media reports about photoresist materials. And most of what people see is related to the news of lithography machine. On the other hand, there are few domestic famous companies engaged in photoresist related industry research and development. At present, the domestic medium or low-end photoresist for printed circuit board has been basically localized, and the semiconductor photoresist for high-end chip manufacturing almost depends on imports. To overcome the foreign monopoly of chip manufacturing industry, the domestic production of high-end photoresist is imperative, especially the extreme ultraviolet photoresist suitable for high-end chip manufacturing. The most advanced semiconductor chips such as 5 nm and 7 nm were produced by extreme ultraviolet lithography with its corresponding photoresist. This review focuses on the photoresist materials for latest extreme ultraviolet lithography technology, and summarizes the organic photoresist materials and organic-inorganic hybrid photoresist materials. We believed that these references and progress can provide a certain guidance for developing new types of photoresist designed by scientists or engineers, as well as for overcoming the bottleneck of photoresist industry.关键词：Photoresist;Extreme ultraviolet lithography;Integrated circuit
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发布时间：2022-10-17 - 摘要：Polyimide fiber is one of the best fibers with high temperature resistance at present. It is widely used in aerospace, flexible electronic equipment and other fields. It can be prepared by one-step or two-step method. However, the polyimide fiber prepared by one-step method has the problems of high solvent toxicity, low solubility in most low toxic organic solvents and poor fiber forming; The polyimide fiber prepared by two-step method has the defects of surface porosity and poor mechanical properties. Because these two preparation methods have several problems, the further application and development of polyimide fiber are limited. This paper first reviews the relative references home and abroad, starting from the contradiction that it is difficult to balance the fiber forming properties of polyimide and fiber properties. The molecular structure of polyimide main chain, the orientation degree of main chain and the design principle of sequence degree of side chain are described, which provides a new idea for the preparation of high-performance polyimide fiber. In addition, the future development trend and application prospect of polyimide fiber are prospected.关键词：Polyimide;High temperature resistant materials;Processing performance;Mechanical property
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发布时间：2022-10-17 - 摘要：Poly-α-olefins synthetic oil is widely used as the base oil of high-grade lubricating oil and is most commonly used in the production of automobile engine lubricating oil, industrial gear oil and turbine lubricating oil. This paper introduces the properties, synthesis methods and various catalysts of Poly-α-olefins. The reaction mechanism and technological process of synthesizing poly-α-olefins with aluminum chloride as catalyst are described. The process development of poly-α-olefins synthesis with aluminum chloride as catalyst in recent years was reviewed from three aspects: modification and loading of aluminum chloride, selection of reaction raw materials and synergistic effect of cocatalysts. According to the advantages and disadvantages of poly-α-olefins synthesis process with aluminum chloride as catalyst, the research direction of polyalphaolefin synthesis process is prospected.关键词：Poly-α-olefins;Aluminum chloride;α-Olefin;Co-catalyst;Polymerization mechanism
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发布时间：2022-10-17 - 摘要：Adiponitrile is an important basic organic chemical raw material. For a long time, the domestic adiponitrile synthesis technology has been restricted by the technological monopoly of developed countries and almost completely relied on imports, which greatly hindered the development of the domestic nylon 66 industry. The butadiene hydrocyanation process is currently the most important adiponitrile production process in the world, and the isomerization reaction of 2- methyl-3 butenenitrile directly affects the economics of the entire process. This review summarizes the research progress of 2-methyl-3butenenitrile isomerization ligands and catalysts, and introduces the catalytic mechanism, reaction technology and the influence of Lewis acid. At the end of the article, the current problems of catalysts are explained, and possible future research ideas and challenges are pointed out, hoping to provide ideas for the technical development of catalysts in the domestic adiponitrile synthesis industry.关键词：2-Methyl-3-butenenitrile;Isomerization;Phosphorus ligand;Complex;Catalyst
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发布时间：2022-10-17 - 摘要：With the rapid development of China’s highway industry in recent years and the demand of some construction industries, the use of asphalt has been increasing. However, asphalt can not be directly used in engineering because of its flowability at high temperature and easy embrittlement at low temperature. The modification of asphalt by adding different substances is a major focus of current research. According to the different modified substances added, this paper introduces the development status of several mainstream modified asphalt, including doped rubber modification, doped SBS modification, nano particle modification and composite modification, discusses various modification mechanisms, summarizes their advantages and disadvantages, and prospects the research direction of low temperature resistant and waterproof modified asphalt in the future.关键词：Modified asphalt;Low temperature resistance;Waterproofing
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发布时间：2022-10-17 - 摘要：Based on supramolecular action and dynamic covalent bonds, a hydrogel with shape memory function was prepared. Poly(vinyl alcohol) (PVA) was used as the main body of the hydrogel, and L-cysteine (Cys) was grafted onto PVA through an esterification reaction to form a copolymer of L-cysteine-polyvinyl alcohol (Cys-PVA). Subsequently, hydroxyethyl cellulose (HEC) was added to introduce a double network structure to improve the mechanical properties of the hydrogel, and to prepare L-cysteine-polyvinyl alcohol/hydroxyethyl cellulose (Cys-PVA/HEC) by combining with Cys- PVA. The results of infrared spectroscopy and nuclear magnetic resonance showed that the reaction molar ratio of PVA to Cys was n(PVA)∶n(Cys)=1∶1. When the esterification reaction was 18 h, almost all the hydroxyl groups of PVA were grafted with Cys. Scanning electron microscopy (SEM) and BET surface area observed that Cys-PVA/HEC hydrogel has obvious network porous structure. The shape memory test shows that Cys-PVA/HEC hydrogel has multi-response triple shape memory. The mechanical performance test showed that the addition of HEC improved the mechanical performance of Cys-PVA/HEC hydrogel, but also affected its shape memory performance. The hydrogel performance was better when the amount of HEC added was 0.4 g.关键词：Hydrogel;Poly(vinyl alcohol);L-cysteine;Cellulose;Shape memory
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发布时间：2022-10-17 - 摘要：In this work, one kind of novel quaternary ammonium salt was synthesized, and used to prepare the watersoluble chitosan (CS38) via condensation reaction. Layer-by-layer self-assembly process were used to prepare the antimicrobial and hemostatic cotton fabric. The physical and chemical structures of the modified cotton fabric were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). It was found that the warp and weft breaking force retention rate of modified cotton was about 70%. The sample still showed good breaking force properties even after modification. The addition of water-soluble chitosan enhanced the hemostatic and antimicrobial properties of original cotton significantly. The blooding clotting index (BCI) of modified sample was decreased from 75±8 to 25±4. This modified cotton fabric expressed good antimicrobial properties and inactivated 81.08% and 73.21% of E. coli O157∶H7 and S. aureus with 6.57 and 6.45 logs reductions within 60 min of contact, respectively. The antimicrobial properties of modified sample were increased significantly with the addition of self-assembly layers.关键词：Quaternary ammonium salt;Layer-by-layer self-assembly;Chitosan;Hemostatic;Antimicrobial
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发布时间：2022-10-17 - 摘要：A new type of hyper-crosslinked porous organic polymer FDA-PP5 was synthesized by one-step polymerization of Friedel-Crafts alkylation using pillar[5]arene as polymerization monomer and formaldehyde dimethyl acetal (FDA) as cross-linking agent. The polyhydroxyl functional porous polymer FDA-PP5-OH was further modified by demethylation. The results showed that the surface wettability and specific surface area of FDA-PP5-OH increased with the introduction of hydroxyl groups. The adsorption experimental results show that the adsorption processes of the two polymers for methylene blue, neutral red, methyl orange and tetracycline are in accordance with the Langmuir adsorption model, and the hydroxyl functionalized FDA-PP5-OH has larger saturated adsorption capacity and faster adsorption rate.关键词：Porous organic polymer;Pillar[5]arene;Demethylation;Dye absorption;Tetracycline adsorption
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发布时间：2022-10-17 - 摘要：The hydrogenated rosin-based hydroxylated polymer microspheres were prepared by suspension polymerization, using hydrogenated rosin derived glycidyl methacylate ester (HG) and styrene (St) as monomers, ethyleneglycol dimethacrylate (EGDMA) as a crosslinking agent, gelatin as a dispersing agent, azodiisobutyronitrile (AIBN) as initiator. The structure and morphology of the polymer microspheres were characterized by Fourier transform infrared spectroscopy (FTIR), laser particle size analyzer, scanning electron microscope (SEM), thermogravimetry analysis (TGA) and X-ray diffractometer (XRD). Effect of adsorption time on phenol adsorption capacity was investigated and the kinetic characteristics in adsorption process were also studied. The results showed that the hydrogenated rosinbased hydroxylated polymer microspheres have good spherical shape, thermal stability, uniform particle size distribution and an amorphous state. The adsorption capacity was 13 mg·g-1 when the initial concentration of phenol was 100 mg·L-1, solution pH was 7, the ratio of the solid to liquid at 1 g·L-1, temperature was 303 K and adsorption time was 90 min. The adsorption of phenol on microspheres follows the pseudo-second-order kinetic model.关键词：Hydrogenated rosin;Microspheres;Phenol;Adsorption;Kinetics
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发布时间：2022-10-17 - 摘要：Using spandex yarn as the core yarn and PPy/Ag nylon filaments as the wrapping yarns, the single-wrap and double-wrap yarn strain sensors are prepared by textile wrapping. The performance of electrical property is characterized, and the relationship among strain sensing, wrapping method and pre-stretching of the spandex core yarn are explored. The results show that: strain sensor made by PPy/Ag filaments wrapped yarn has good sensing performance, the rate of resistance change can be reached 16%; the high stretchability, its elongation can reach 50%; the double-wrapped yarn resistance is better than the single-wrapped yarn. The double-wrapped yarn resistance is reduced to 49.7%, but the sensitivity of the single-wrapped yarn is higher than double-wrapped yarn; pre-stretching of the core yarn spandex can adjust the resistance of the flexible strain sensor in the single-wrapping mode, but has a small effect on the sensitivity of the yarn sensor.关键词：Polypyrrole;Strain sensor;Wrap;Spandex;Sensitivit
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发布时间：2022-10-17 - 摘要：The esterification of diethylene glycol and maleic anhydride is used to prepare the micro-crosslinking assistant, and then copolymerized with unsaturated polyether macromonomer and unsaturated acid to prepare a highly adaptable polycarboxylate superplasticizer. The effects of the polyether monomer type, the ratio of acid-ether and the amount of micro-crosslinking auxiliary agent on the performance of polycarboxylate superplasticizer were experimentally studied.The results show that when the acid-to-ether ratio is 3.6 and the amounts of oxidant, reducing agent, chain transfer agent, and micro-crosslinking aid are 1.8%, 0.2%, 0.6%, and 6%, respectively, of the total monomer mass, the polycarboxylate superplasticizer prepared can effectively improve the adaptability problems caused by the complexity of concrete raw materials and the high mud content of sand and gravel, and it has good tolerance to sand and gravel aggregates with high mud content.关键词：Adaptability;Polycarboxylate superplasticizer;Micro-cross-linking;Performance
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发布时间：2022-10-17 - 摘要：In this study, phase separation is realized by electric field. After the hydrophilic light curing resin poly(ethylene glycol diacrylate) (PEGDA) was blended with hydrophobic heat curing dimethylsiloxane acrylate prepolymer (PDMS), PEGDA was orderly arranged in the direction of film thickness by dielectrophoresis under electric field. The pearl chain structure was fixed by light curing of PEGDA and thermal curing of PDMS. The formation of chain structure was observed online by optical microscope to determine the optimal conditions for phase separation. The structure of the cured PEGDA/ PDMS composite membrane was characterized by scanning electron microscopy (SEM) and Raman spectrometer, which further proved the realization of phase separation. The mechanical properties of the materials were tested. The realization of phase separation judged by the change of contact angle had little effect on the mechanical properties of the films. The results show that the chain structure of PEGDA particles in PDMS matrix under AC electric field is faster and uniform than that under DC electric field. When the AC electric field intensity is 500 V/mm and the frequency is 100 Hz, the pearl chain structure formed by PEGDA in the PDMS matrix is uniform. Compared with the composite film without electric field, the flexibility and surface hydrophilic properties of the obtained PEGDA/PDMS composite film increase, and the optical properties change little.关键词：Electric field;Phase separation;Poly(ethylene glycol diacrylate);Polydimethylsiloxan
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发布时间：2022-10-17 - 摘要：Lanthanum isonipecotic acid is synthesized from isonipecotic acid, Lanthanum nitrate, hexahydrate and aqueous ammonia.The molecular formula is determined to be La(C6H10NO2)3(NO3)3·H2O by Fourier infrared spectra analysis (FTIR),elemental analysis, and thermogravimetric analysis (TG-DSC). The heat stability of lanthanum isonipecotic acid is compared with that of common heat stabilizers. In order to further improve the heat stability of lanthanum isonipecotic acid, it was compounded with zinc stearate and pentaerythritol in binary and ternary combinations. When the ratio of lanthanum isonipecotic acid/zinc stearate/pentaerythritol is 2/1/2, the heat stability time is 42 min, and the anti-tarnishing property has been greatly improved. Lanthanum isonipecotic acid can absorb Cl- produced by poly(vinyl chloride) (PVC) degradation and combine with rare earth ions to form LaCl3, thus inhibiting the degradation of PVC and achieving the effect of heat stability.关键词：Lanthanum isonipecotic acid;Thermal stabilizer;Poly(vinyl chloride);Rare earth;Mechanism of thermal stabilization
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发布时间：2022-10-17 - 摘要：With phenol as the target molecule, acrylamide as functional monomer, methyl acrylamide as cross-linking agent and azobiisobutyronitrile as initiator, the phenol molecular imprinted polymers were prepared by solution polymerization. Based on self-assembly technology, the adsorption process of polymers on the gold electrode was enhanced by the sensitization of chitosan to prepare phenol molecular blot electrochemical sensors. Scanning electron microscopy results showed the surface of imprinted polymer presented many grooves and many voids. The successful preparation of electrochemical sensor was verified by cyclic voltammetry (CV)and AC impedance (alternating cuncent impedance). By optimizing the experimental conditions, the peak current time was best when the time was 20min. Phenol concentration had a good linear relationship with peak current within the range 6.7×10-6~24.6×10-6 mg/L, and its detection limit was 3.55×10-9 mg/L. The prepared sensor was used to test the water sample to determine the phenol content, and the effect was remarkable.关键词：Phenol;Electrochemical sensor;Molecularly imprinted;Solution polymerization
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发布时间：2022-10-17 - 摘要：Polydimethylsiloxane (PDMS) is widely used in the field of flexible electronics due to its transparency, biocompatibility, good elasticity and so on. Aiming at the wire layout of flexible electronic devices, a new flexible structure of PDMS with spring wire is designed. Through the combination of experiment and finite element simulation, under the condition of constant spring parameters such as spring outer diameter D, the optimum process parameters of tensile properties of flexible structure were studied from three aspects: the ratio of PDMS prepolymer to curing agent, the thickness of flexible structure and the spring spacing. The results show that the optimum process parameters are as follows: the mass ratio of PDMS prepolymer to curing agent is 15∶1, the structure thickness is 2.14D, and the spring spacing is 1.57D. The tensile strain of flexible structure can reach 95%, and the tensile force tends to be stable under the same tensile deformation after 20 cycles. In the flexible structure, the spring-shaped wire still has excellent conductivity stability even though it has large deformation during stretching.关键词：Flexible structure;Polydimethylsiloxane (PDMS);Spring shaped wires;Finite element method
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发布时间：2022-10-17 - 摘要：Compositions of ВК-36 film adhesive were analyzed by using Fourier-transform infrared spectroscopy (FTIR) and X-ray photon electron spectroscopy (XPS). Main compositions of ВК-36 film adhesive are similar to those of SY-14A film adhesive except that ВК-36 film adhesive has a great amount of aluminum powder and fumed silica. Dynamic differential scanning calorimetry (DSC) experiments at multiple heating rates (β) were performed to obtaine the characteristic reaction temperatures (maximum cure peak temperatures Tp) of ВК-36 film adhesive. Based on changes of Tp with different heating rates (β) from DSC curves, a linear equation, Tp=T1+ΔTlnβ, had been set up to determine the curing temperature more reasonably. The above equation can be used to explain some laws of higher or lower of apparent activation energies (Ea), by which the apparent activation energy (Ea) is nearly equal to RT12/ΔT . The apparent activation energy (Ea) values determined by the simple equation (Ea ≈RT12/ΔT ) are similar to those determined by methods of Kissinger and Ozawa. Activation energy (Ea) results calculated with different data assembles show that Ea values have increasing trend with increasing peak temperatures data due to increasing heating rate. The simple equation (Ea≈RT12/ΔT) is derived by using limit-calculating method.关键词：Film adhesive;Thermal analysis;Curing process;Cure kinetics;Limit-calculating method
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发布时间：2022-10-17 - 摘要：In this paper, tung oil-based derivatives were prepared using UV light as the energy source and the inorganic acid as the catalyst. First, methyl eleostearate was prepared via the transesterification reaction between tung oil and methanol, and then reacted with resorcinol to synthesize tung oil-based derivatives (ME-RES) by Friedel-Crafts alkylation reaction under UV light. The structure of the product was also characterized and analyzed by Fourier transform infrared (FT-IR) spectroscopy, ultraviolet and visible (UV-Vis) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy and high performance liquid chromatography-mass spectroscopy (HPLC-MS). Finally, the influence of factors such as catalyst and solvent on the reaction was investigated through a single factor. The research results showed that concentrated sulfuric acid could catalyze the alkylation reaction of methyl eleostearate and resorcinol under the condition of UV light, and the suitable concentration range was 80%-90%, while the ordinary proton acids such as H3PO4, CH3COOH could not catalyze the alkylation reaction under UV light. In addition, the research have found that photochemical reactions have the advantages of short reaction time, high yield, low energy consumption, and environmental protection.关键词：Tung oil;UV light;Inorganic acid;Photocatalysis;Friedel-Crafts alkylation reaction
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发布时间：2022-10-17 - 摘要：The random forest method in data analysis is used to study the optimization of impact properties for PP/ POE/β-Na/ATP blends. The model parameters are adjusted by learning and training the present 8 groups samples, and then the component particle size of these samples is lowered to refine the content of each component within the range of contents for these samples. 1750 samples are selected to verify the best two groups of predicted data. The experimental results are in good agreement with the predicted values. Thus, the better formula can be selected with less experimental times. The data flux of experimental verification is greatly expanded. The cost and the time of material formulation optimization and selection are effectively saved. Furthermore, the numerical analysis method is extended to analyze the orientation of PVDF/BaTiO3 composites during the uniaxial tensile. The predicted results are basically consistent with the experimental results, which verifies the universality of Python numerical analysis method in the formula optimization of polymer blends.关键词：POE;PP;Blending modification;Data analysis
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发布时间：2022-10-17 - 摘要：The type selection experiment of drag reduction polymer materials at high Reynolds number (up to 2.2× 107) is carried out by using the method of measuring torque on the rotating disc and rotating cylinder in water tank. Taking poly(ethylene oxide) (PEO), polyacrylamide (PAM) and guar gum, which are widely used in drag reduction at present, as experimental objects, the effects of concentration, relative molecular mass, mixing with other polymers, shearing and seawater on drag reduction were studied. The main conclusions are as follows: (1) the drag reduction rate generally increases with the increase of concentration. As far as PEO(Mn=1×107) is concerned, the concentration of 5 mg/L is saturated at low Reynolds number (Re<1×107), and the maximum drag reduction rate is about 60%. (2) The drag reduction rate generally increases with the increase of relative molecular mass. When Re<1.3×107, the drag reduction rate is basically unchanged when the relative molecular mass is greater than 8×106. (3) The ability to resist shearing increases with the increases of concentration and relative molecular mass, but the increase decreases when the concentration >5 mg/L and relative molecular mass >8×106. (4) Increasing the concentration or mixing PAM can improve the drag reduction rate and the ability to resist shearing, and the former has better effect. (5) The drag reduction rate in seawater is equivalent to that in fresh water, but the ability to resist shearing in seawater is slightly poor.关键词：Drag reduction;High molecular polymer;Selection;High Reynolds number;Experiment
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发布时间：2022-10-17 - 摘要：Coating preparation and coating is an important part of engineering practice for students majoring in polymer materials and engineering. However, due to the large area of land, high cost, flammability, solvent emissions and other safety and environmental protection problems, coating practice teaching resources is in great shortage, which seriously restricts the cultivation of innovative consciousness and high-quality talents. We apply virtual simulation technology to develop the virtual simulation experiment of wood green coating, and simulate the operation process of wood coating environment, coating equipment and coating process in the actual experiment, which solves the experimental teaching bottleneck of high cost, high risk, high consumption and large footprint in coating experiment. The developed virtual simulation experiment break through the traditional coating experiment teaching time and space limitations, effectively extend the experimental teaching content, and help students better understand the relevant process principle, operating environment, process and control system, production safety.关键词：Virtual simulation experiment;Wood coating;Green coating;Coating practice
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发布时间：2022-10-17 - 摘要：Modular teaching (MT) is based on moral education, focusing on the curriculum system construction. This study introduces the development history of MT. Then, taking the Master’s Program of Materials Science and Engineering (Polymer) in Jiangnan University as an example, through integrating the teaching course modules, various knowledge of research interests (including core courses, practical application and frontier progress) are varied based on the logical relationship among knowledge points. As a result, the teaching course modules of Polymer Material major are established. It solved the problems such as repeated construction of teaching system, lack of uniformity and advancement of teaching contents etc., which helped the graduate students construct and complete the knowledge system to meet the demand of innovation, and better cultivate their innovation and practice ability.关键词：Polymer material;Postgraduate cultivation;Modular curriculum;Innovation and practice
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发布时间：2022-10-17 - 摘要：Course teaching is at the center of student training and is of fundamental significance for improving the quality of student training. This article presents our try and practical exploration on first-class course construction with the course of Polymer Chemistry (including experiments teaching) as an example. Through the analysis of course teaching key points and the current shortcomings, the teaching contents of this course are reconstructed into five types of problems directed by outcome-based education (OBE) teaching concept. The online and offline classroom mixed teaching model is adopted with a variety of teaching methods such as case teaching, course debate, and inverted classrooms to break the silent state of traditional classroom teaching, together with scientifically evaluating the learning effect of students through diversified ability assessment methods. The teaching quality and ability of the teaching team via organizing course team has been significantly improved, and it has formed an operation mode based on bringing the new teachers with the old ones and combining complementary advantages, task-driven, mutual assistance and sharing. In the construction of other professional courses, our "classic" try is applying for leading the "face" courses, which has played a better model for demonstrating and guiding the teaching of other courses.关键词：Polymer chemistry;Mixed teaching;Outcome-based education (OBE);Course teaching design
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发布时间：2022-10-17 -
Teaching Practice of
Polymer Chemistry Course Reform Promoted by Engineering Education Accreditation摘要：Polymer Chemistry is a professional basic course for students majoring in polymer materials and engineering. The content of "Polymer Chemistry" contains a lot of theoretical knowledge about polymerization mechanisms and polymerization reaction kinetics, involving many tedious mathematics derivation processes, which are complex and difficult to understand. Therefore, it becomes a challenging and important task to develop students’ ability to solve complex engineering problems in the teaching process of Polymer Chemistry course. In view of this, this article provides a more detailed reform explorations carried out in our teaching team of Polymer Chemistry course including the strengthening of learning motivation and objectives, the establishment of engineering consciousness, the reorganization of teaching contents and the improvement of teaching methods. Through these reforms, the teaching processing has been organically performed and the objectives of the course have been achieved by acquisition of theoretical knowledge and development of abilities to solve complex engineering problems. It plays an important support for graduation requirements for engineering education accreditation, laying a foundation for the realization of the training objectives of this major.关键词：Engineering education;Engineering consciousness;Complex engineering problem;Problem solving ability- 33
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发布时间：2022-10-17 - 摘要：Based on the talents demands in high-performance membrane materials for serving the development of strategic emerging industries, in combination with the orientation of materials specialty, the specialized course "Membrane Separation Technology" has been established in Anhui University. In the teaching process, we attempt to cultivate learning interest of students by the optimization of reference books and teaching resources, the introduction of interesting classroom experiments, and the flipped classroom mode. And the engineering awareness and the ability to solve complex engineering problems are cultivated by introducing engineering practice teaching cases, designing membrane separation experiments, and optimizing process assessment methods. Satisfyingly, the good effects have initially been achieved. The course construction will be kept up with the times to provide support for cultivating advanced engineering and technical personnel in the strategic layout of polymer material industry.关键词：Membrane separation technology;Engineering awareness;Polymer membrane materials;Learning interest
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发布时间：2022-10-17
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