［Objective］To address the issues of superhydrophobic coating is prone to loss and thecoating exhibits poor long-term stability under harsh conditions，leading to the attenuation of anti-corrosion and anti-scaling performance and insufficient service durability.［Methods］In this study，a hydrothermal method was adopted to synthesize flower-like structured nano-ZnO particles，which were subsequently subjected to hydrophobic modification with hydroxyfluorosilicone oil. The superhydrophobic coating was fabricated via a spray-coating technique，and then the coating was impregnated with hydroxyfluorosilicone oil to form a super-slippery surface. Scanning electron microscope，contact angle measurement instrument，electrochemical workstation were used to characterize the wettability，wear resistance，chemical stability，corrosion resistance，and anti-scalingperformance of the coating.［Results］The super-slippery surface prepared by coating hydroxyfluorosilicone oil exhibits a water contact angle（WCA）of（132. 9±2. 1）° and a sliding angle of（6. 8±0. 3）° . The corrosion current density（I_corr）of the prepared super-slippery coating was 2. 81×10^-11 A/cm²，and the corrosion potential（E_corr） was -0. 32 V. Furthermore，after dynamic simulated scaling test in a 0. 01 mol/L Ca²⁺ solution for 7 days，the CaCO₃ scaling amount on the surface of the super-slippery coating was only 3. 3 mg/cm².［Conclusion］The coating possesses good mechanical properties and chemical stability，and exhibits excellent anti-corrosion and anti-scaling effects，providing an effective solution to the corrosion and scaling issues of industrial metal materials.

［Objective］To address issues such as slow drying speed and short pot life during theapplication of waterborne epoxy primers.［Methods］Acrylic acid was used to perform ring-opening modification on epoxy resin，synthesizing a chain extender AAE51 containing carbon-carbon double bonds（C=C）capable of undergoing Michael addition reactions. Utilizing the characteristic that thedouble bond of this intermediate preferentially reacts with sterically hindered secondary amines（—NH—） during the Michael addition reaction，a waterborne epoxy curing agent with a highly crosslinked network structure was constructed. The chemical structure of the chain extender was characterized usingFourier-transform infrared spectroscopy（FT-IR）. The effects of the AAE51 addition amount on the stability of the curing agent，as well as the drying performance and corrosion resistance of the resulting coating films，were systematically investigated.［Results］When the addition amount of AAE51 in the waterborne epoxy curing agent was 8%（based on the total mass of the curing agent）， the curing agent had moderate viscosity and good water solubility. The self-drying performance of the coating filmformulated with it at room temperature was significantly improved，reaching a hardness of HB in12 hours and H in 24 hours. It could withstand 336 hours of salt-spray testing without blistering on thepanel surface，and the peeling width in the scratched area was less than 3 mm. It also showed noblistering after 336 hours of initial water resistance testing，and the system viscosity maintained good stability within a 3-hour pot life.［Conclusion］In this study，through the Michael addition reaction， the NH groups that are difficult to react with epoxy are fully utilized to form a network structure，therebyincreasing the glass-transition temperature of the curing agent and achieving the goal of acceleratingthe drying speed of the film.

［Objective］To improve the application efficiency（viscosity issues）and fire-retardant performance of solvent-free epoxy fire-retardant coatings in engineering applications.［Methods］ Orthogonal experiments were conducted to determine the optimal ratio. The application viscosity andfire-retardant performance of the solvent-free epoxy system were systematically investigated usingscanning electron microscopy（SEM） and thermal insulation efficiency test furnaces.［Results］ Solvent-free epoxy fire-retardant coatings（System1） were prepared using bisphenol A epoxy resin（NPEL-128）as the film-forming agent and polyamide resin（PA）as the curing agent. With a mixed viscosity of 2. 6 Pa·s，it was suitable for trowel application. At a coating thickness of 13. 6 mm，it achieved a fire resistance rating of 3 hours and an expansion ratio of 7 times. Solvent-free epoxy fire-retardant coatings were prepared with NPEL-128/bisphenol F epoxy resin（NPEL-170）/polypropylene glycol diglycidyl ether（PPGDGE） as the film-forming agent and amide-based amine resin as the curing agent（System2）. With a mixed viscosity of 1. 5 Pa·s，it was suitable for spray application. At a coating thickness of 7. 7 mm，it exhibited a fire resistance rating of 2 hours and an expansion ratio of 15 times.［Conclusion］ Both systems could effectively improve construction efficiency and offerexcellent fire-retardant performance. 

［Objective］ To enhance the mechanical strength of self-healing polyurethane containing disulfide bonds，a high-strength and high-resilience self-healing polyurethane elastomer（PU）based on disulfide bonds and multiple hydrogen bonds was prepared.［Methods］A prepolymer was first prepared by the reaction of polytetrahydrofuran（PTEMG） with isophorone diisocyanate（IPDI）. The prepolymer was then further reacted with 4，4'-diaminodiphenyl disulfide（4-AFD）to synthesize an intermediate. Finally，the intermediate reacted with isophthalic dihydrazide（IPDH）to form polyurethane（PU）. The influence of the molar ratio of soft and hard segment monomers on theproperties of PU was investigated. The products were characterized using Fourier transform infraredspectroscopy（FT-IR）， X-ray diffraction（XRD）， thermogravimetric analysis（TG）， and differential scanning calorimetry（DSC）.［Results］The polyurethane with a molar ratio of soft segments（PTEMG）to hard segments（including IPDI，4-AFD，and IPDH monomers） of 2.5（PU2. 5） possessed goodhardness and resilience. It exhibited a self-healing efficiency of 54% at 80 ℃ . Moreover，the self-healed PU2. 5 exhibited high elongation at break（827%）and tensile strength（8 MPa）.［Conclusion］ The synthesized polyurethane elastomer exhibited good self-healing and mechanical properties.

［Objective］To address the insufficient mechanical and barrier properties of traditional anticorrosion coating，this study synergistically combined nanosheets with tough cardanol-based vinyl ester（VER） resin to construct a high-performance nanoparticle-reinforced bio-based composite anticorrosion coating.［Methods］ Gallic acid-modified graphene oxide（NGA） was prepared by modifying graphene oxide（GO）with gallic acid（GA）via the bridging effect of diethylenetriamine. Subsequently，NGA was incorporated as a functional filler into a tough cardanol-based VER resin. Aseries of NGA/VER composite anticorrosion coatings were then fabricated through a UV curing approach.［Results］ The optimized cured film exhibited a gel content exceeding 99%，a tensile strength over 80 MPa，an elongation at break of 17. 59%，and a pencil hardness of 6H. Additionally，it demonstrated excellent thermal stability， chemical resistance， and long-term anticorrosion performance.［Conclusion］ This study constructed a high-strength and tough anticorrosion nanocomposite coating by synergistically combining modified GO with cardanol-based VER resin， providing an effective strategy for developing high-performance bio-based anticorrosion coating.

［Objective］Solve the problems of slow film formation and low adhesion of tung oil-based waterborne coatings.［Methods］A method for preparing UV-curable tung oil-based waterbornelatex coatings was proposed by using double bond functionalized tung oil and polyvinyl acetatelatex/polystyrene（PVAc/PS） core-shell latex via external emulsification composite. By utilising themorphological effects of core-shell latex particles to accelerate the film-forming and water-drainageprocesses of the latex，and combining this with the UV-curing properties of modified tung oil，the curing rate and film properties of the waterborne latex were improved.［Results］Taking pentaerythritol triacrylate（PETA）modified tung oil composite latex as the research object，after adjusting the water-oil ratio and optimizing the emulsifier dosage，combined with particle size distribution and microstructure analysis，it was found that when the emulsifier addition amount was 6% and the water-oil ratio was 7∶3，the latex exhibited uniform particle size dispersion and excellent stability. UV-curingperformance tests showed that high oil phase or high emulsifier addition amount could shorten thecuring time，rapid UV-curing could be achieved in as fast as 22 seconds，and the UV-curing efficiencywas excellent. When the oil phase proportion was high or the emulsifier content was high，the peak value of the stress-strain curve of the paint film was high，the adhesion was stably maintained at level 1 or 0，and at the same time，the gloss was improved and the roughness was reduced.［Conclusion］ Through the coordinated control of the water-oil ratio and emulsifier，tung oil-based waterborne latex coatings with good dispersion stability，rapid UV-curing and adjustable film properties can be prepared，providing technical support for the application of natural vegetable oil-based environmentallyfriendly coatings.

［Objective］ To address the operational challenges faced by PMMA cover plates in polar marine environments，including low-temperature intrusion and floating ice collision in polar marine environment.［Methods］A dual-layer composite coating system was developed，consisting ofan epoxy-based thermal insulation primer with low thermal conductivity and high adhesion，and a polysiloxane-based topcoat with high wear resistance and impact protection.［Results］The topcoat exhibited a wear value of 64. 5 mg at -35 ℃ under 500 g/1 000 r. Meanwhile，the coating system maintained surface integrity after undergoing -30 ℃ ice impact testing while demonstrating excellentsalt spray resistance and weather resistance. Additionally，this system reduced the thermal conductivity of PMMA covers from 0. 141 W/（m·K） to 0.108W/（m·K）， while the thermal conductivity of the primer was as low as 0. 049 W/（m·K）. In a -55 ℃ low-temperature environment，coated and uncoated PMMA samples were used as insulation box covers. After sealing at room temperature and resting for60 minutes，the internal temperature difference between them reached 10. 61 ℃，meeting equipment service requirements.［Conclusion］ This coating system simultaneously achieves effective thermal insulation，low-temperature wear resistance，resistance to floating ice impact，and excellent weather resistance in an energy-neutral manner. It provides a viable solution for high-reliability protection ofpolar equipment in environments characterized by the coupled effects of low temperatures，high salinity， and floating ice.

［Objective］ To address the corrosion-induced failure of Q420NH weathering steelused in power grid towers during service，an epoxy anti-corrosion coating with both excellent corrosionresistance and corrosion-inhibition self-healing capability was developed to improve the long-termprotection of tower steel structures.［Methods］A composite filler loaded with corrosion inhibitor 5-amino-2-mercaptobenzimidazole（AMB） was prepared by a one-step method. Then，it was incorporated into an epoxy coating，and applied onto the surface of Q420NH steel to construct a composite anti-corrosion coating. The morphology and composition of the composite filler were characterized，and its corrosion inhibition effect，as well as the corrosion resistance and self-healingperformance of the coating，were evaluated through release experiments，corrosion morphologyobservation，and electrochemical tests.［Results］ The composite filler had a particle size about 100 nm，and the inhibitor loading was 17. 5%. When the addition amount of the composite filler was nomore than 2%，the corrosion resistance of the epoxy coating was effectively maintained，with the low-frequency impedance modulus remaining above 10¹⁰ Ω ·cm² after 60 days of immersion in saline solution. For the scratched coating containing 2% composite filler，the low-frequency impedance modulus remained higher than 10⁵ Ω ·cm² after 168 h of immersion，the corrosion products in the scratched region were significantly reduced，and the characteristic Raman peaks of AMB were detected.［Conclusion］ The incorporation of 2% composite filler can effectively enhance the protectiveperformance of the epoxy coating on Q420NH steel and endow the coating with excellent corrosion-inhibition self-healing capability.

［Objective］ To address the issue of low paint transfer efficiency in the automobile painting process.［Methods］ Using a mass production painting line as a platform，a high transfer efficiency（high TE） spraying system with external clearcoat spraying was employed for trial sprayverification. By optimizing spraying trajectories and adjusting process parameters，the improvement effects on spraying quality，energy consumption，and paint unit consumption were evaluated.［Results］ The high transfer efficiency spraying technology significantly improved paint transfer efficiency.Compared with conventional electrostatic spraying technology，paint unit consumption was reduced by 15%，spray booth air velocity was decreased by 30%，and the transfer efficiency was 90. 2%. Thespraying quality met the requirements for mass production.［Conclusion］This technology represents an effective path for cost reduction，efficiency improvement，and green manufacturing in automobile painting，and holds great potential for large-scale promotion.

［Objective/Significance］Due to the excellent chemical corrosion resistance，electrical insulation，mechanical strength，and cost advantages of polyvinyl chloride（PVC）resin，this paper analyzes its application status and bottlenecks in the coatings field，providing a theoretical basis for its research， development and engineering applications.［Analysis/Discussion/Progress］ Focusing on technological breakthroughs of PVC resin in the coatings fields of corrosion resistance，stone chip resistance， waterproofing，and multifunctional protection，this review highlights recent advancements in enhancing the overall performance of PVC coatings through copolymer modification，nanocomposites，and surface functionalization. It also analyzes the limitations of PVC in coatings applications and proposes strategies suchas eco-friendly plasticizer substitution，development of bio-based PVC raw materials，and optimization of green production processes.［Conclusion/Prospect］PVC resin coatings are driving continuous innovationto improve overall performance and expand application boundaries while actively addressing environmentalchallenges，advancing toward high-performance，multifunctional，and sustainable development. Future research should prioritize multifunctional collaborative design and large-scale production to expand itsapplications in emerging fields such as smart self-healing coatings and flexible circuit packaging，thereby achieving sustainable development of PVC materials.

［Objective/Significance］ Superhydrophobic coatings have significant potential in applications such as self-cleaning，anti-icing，and corrosion protection. The spraying method hasbecome an important approach for the engineering application of superhydrophobic surfaces due to itssimple process and ease of scalability. However，the micro-nano rough structure essential for superhydrophobicity in spray-coated surfaces is prone to failure due to filler shedding or wear，making poor durability a core bottleneck restricting their widespread application.［Analysis/Discussion/Progress］ This paper systematically reviews the research progress on the durability of spray-applied superhydrophobic coatings. Starting from the theory of wettability，it elucidates the inherent mechanism of hydrophobic failure and summarizes enhancement strategies from three aspects：micro-nano structure optimization（such as multi-level rough structure，self-similar morphology），filler-resin interface strengthening（such as chemical bridging，interface modifiers），and dynamic coating repair （such as reversible coordination bonds，hydrogen bonds）.［Conclusion/Prospect］Currently，althoughcertain progress has been made in the research and modification of spray-coated superhydrophobiccoatings，industrial application is still constrained by such as harsh service environments， environmental regulations，and cost. In the future，by continuously focusing on the long-term weather resistance，multi-functional synergistic enhancement，and green large-scale preparation technology of superhydrophobic coatings，we can gradually promote their industrial application. 

［Objective/Significance］ Magnesium is chemically reactive and has poor corrosion resistance，which severely restricts its application in aerospace，automotive manufacturing，electronic products，biomedical，and other fields. Among various protective measures，corrosion inhibitor technology has gradually become an important research direction in the field of magnesium alloycorrosion protection due to its advantages of economic efficiency and ease of operation.［Analysis/Discussion/Progress］ Focusing on the research progress of magnesium alloy corrosion inhibitors in recent years，this paper systematically reviews the development status of inorganic， organic，composite，and green corrosion inhibitors according to their chemical composition，summarizes the corrosion inhibition mechanisms of various inhibitors，and provides an outlook on the futuredevelopment trends of the magnesium alloy corrosion inhibitor field based on existing research results.［Conclusion/Prospect］ The future development of magnesium alloy corrosion inhibitors requires breakthroughs across multiple dimensions：building upon high corrosion inhibition efficiency，while simultaneously meeting the comprehensive requirements of environmental friendliness，strong structural designability，and low cost. 

［Objective/Significance］ Anti-fingerprint agents have important applications in protecting the surface of touch screens.［Analysis/Discussion/Progress］Based on the mechanism of anti-fingerprint agents，the molecular design concept of anti-fingerprint agent was expounded from amolecular structure perspective. In light of market demand，the preparation methods for two categories of functional anti-fingerprint agents were introduced，and the preparation techniques of anti-fingerprint coatings were also summarized.［Conclusion/Prospect］The market demand for high-end functional anti-fingerprint coatings is expected to increase steadily. Although domestic research on anti-fingerprint agents has achieved systematic progress in molecular structure design and functionalproduct development，challenges persist，including reliance on imported key raw materials and a limited share in the high-end market. Future efforts should focus on technological breakthroughs for raw materials self-sufficiency，precise molecular design，innovation in functional products，and optimization of coating processes，thereby promoting domestic substitution and industrial upgrading.