［Objective］This study aims to mitigate the adverse effects caused by the adhesion ofmarine fouling organisms to the windows of optical instruments during their service in the marineenvironment.［Methods］ Using 3，3，3-trifluoropropylmethyldimethoxysilane（MTFPS） as the monomer，a liquid-like molecular brush slippery surface which featuring a main chain composed ofsiloxane bonds was prepared via covalent grafting on the surface of glass substrate through acid-catalyzed polycondensation. The structure and morphology of the molecular brush slippery surface werecharacterized systematically. Additionally，key performances of the slippery surface were investigated， including liquid repellency，light transmittance，stability，and anti-fouling efficacy against proteins， bacteria，and algae.［Results］The liquid-like molecular brush slippery surface formed by chemicalbonding exhibits excellent liquid repellency，which can effectively prevent liquid from wetting thesurface and maintain high light transmittance. Furthermore，the surface-bonded liquid-like molecularbrush demonstrates superior anti-adhesion performance against bovine serum albumin，Escherichia coli，Staphylococcus aureus，Chlorella pyrenoidosa and Phaeodactylum tricornutum.［Conclusion］This work provides novel insights and strategies for the development of anti-fouling technologies tailored tothe windows of optical instruments in the marine field.

［Objective］To effectively provide early warning of coating damage，metal substrate corrosion，and extend the service life of organic coatings.［Methods］Using electrospinning technology， polyacrylonitrile（PAN）core-shell nanofibers loaded with 8-hydroxyquinoline（8-HQ）and fluorescein（FL）were prepared，and epoxy resin was drop-coated onto the fiber surface to obtain a fiber-resincomposite coating. The morphology of the nanofibers was observed by scanning electron microscopy（SEM）and transmission electron microscopy（TEM）. The chemical composition of the nanofibers wasstudied using Fourier transform infrared spectroscopy（FT-IR）and thermogravimetric analysis. The release performance of the loaded materials and the corrosion inhibition performance of 8-HQ in the fibers were investigated using ultraviolet absorption spectroscopy and laser confocal scanning microscopy（CLSM）. The anticorrosion performance of the coating was studied using SEM，energy dispersive spectroscopy（EDS）， X-ray photoelectron spectroscopy（XPS）， and electrochemical impedance spectroscopy（EIS）.［Results］ The PAN@8-HQ/FL nanofibers exhibited uniform fiber diameters and a layered core-shell structure，and were successfully loaded with 8-HQ/FL，showing good release performance. According to EIS results，the damaged composite coating had a corrosion inhibition efficiency of 95. 1% after 144 hours，demonstrating excellent anticorrosion performance.［Conclusion］The study found that when only the composite coating was damaged，the released FL could emit green fluorescence under UV light. When the damage reached the metal substrate，the 8-HQreleased from the damaged composite coating could form a black complex with Fe3 . generated bycorrosion，filling the microcracks after coating damage and providing a corrosion-isolating effect，thus achieving dual functions of layered self-warning and corrosion inhibition for microscopic coatingdamage.

［Objective］ This study aims to develop a polyurethane-based marine antifoulingcoating combining fast curing characteristics with environmental friendliness.［Methods］ A UV-curable sulfobetaine-type zwitterionic castor oil-based polyurethane resin was prepared by using azwitterionic precursor synthesized via thiol-ene addition reaction，isophorone diisocyanate，castor oil， hydroxyethyl acrylate and 1，3-propanesultone. The antifouling coating was obtained through UVcuring. The precursor structure was characterized by FT-IR， ¹H NMR and HRMS，and the conversion rate of carbon-carbon double bonds in the resin was determined. The water absorption，water contact angle，diatom adhesion resistance and biotoxicity of the coating were systematically investigated.［Results］With the increasing of zwitterionic content，the water absorption rate increased significantly， the coating water contact angle decreased，and the diatom attachment density on the coating surfacedecreased. The coating with 30% zwitterionic precursor exhibited the lowest diatom attachment density of（68±26）cells/mm². Moreover，the coating showed no toxic effect on diatom growth.［Conclusion］ The zwitterionic coating can effectively inhibit the attachment of Nitzschia closterium，and has no significant effect on diatom growth.

［Objective］To solve the failure of conventional inhibitor at high-temperature duringthe curing addition silicone rubber by dip-coating processes，this study aimed to develop a novel crosslinking inhibitor with broad temperature adaptability.［Methods］ The inhibition effects of bidentate Schiff-base inhibitors（In-2 to In-7）were comparatively investigated and compared with the commonly used acetylene alcohol inhibitor（In-1） in the liquid silicone rubber curing process. A systematic evaluation of coordination atom types（N^N，N^O，N^S）and substituent effects on inhibition performance was conducted through storage stability at 80 ℃，curing time at vulcanization temperature， swelling properties and mechanical properties of cured products.［Results］The N^N type Schiff-base inhibitor In-4 demonstrated optimal performance，extending the storage time at 80 ℃ from 2 h to 6 hwhile maintaining superior mechanical properties with the tensile strength and elongation at breakbeing 3. 34 MPa，317% respectively，at 0. 10 mmol loading. A functional coating with 0. 57 mmthickness was easily achieved by dip-coating for 60 seconds and met most requirements.［Conclusion］ The In-4 inhibitor suppressed effectively the hydrosilylation reaction at 80 ℃，and improved significantly in processing stability. The results above showed great potential applications in dip-coating field. The systematic studies also provided crucial process parameters for high-performancesilicone rubber production.

［Objective］This paper develops a high-performance acrylic polyurethane hull coatingand improves its key properties.［Methods］Firstly，hydroxy acrylic resins were screened for optimalweatherability through accelerated UVB aging tests that simulated outdoor exposure conditions. Then， nano-fillers were introduced and compared with conventional fillers. The volume solids content of thecoatings was tested using a density cup by the immersion method to evaluate their effectiveness inreducing density and achieving high volume solids. The enhancement effect of hexagonal boron nitridenanosheets（BNNS）was evaluated through performance tests including salt spray resistance，abrasion resistance，and seawater immersion.［Results］The formulation was finalized with hydroxy acrylic resin 1# as the primary resin，incorporating nano-fillers to partially replace conventional types. This approachresulted in a 1%-3% loading range that effectively lowered the coating density without a substantialincrease in viscosity，accomplishing the ideal profile of high volume solids，low viscosity，and low VOC. Furthermore，the incorporation of BNNS was found to significantly enhance the coating’s abrasion and corrosion resistance. Specifically，at a loading of 1. 5%，these properties were significantly improved compared to the blank sample.［Conclusion］This study presents a viable solution for developing high-performance，high-volume-solid，low-viscosity，and environmentally friendly hull coatings. 

［Objective］ This study aimed to address the challenges associated with surfacetreatment of rusted metal substrates by developing a compound functional acid-epoxy rusty anti-corrosion coating.［Methods］Tannic acid（TA），gallic acid（GA）and salicylic acid（SA）were selected as rust converters. A four-factor，three-level orthogonal test design was employed to formulate the composite coating by combining the rust converter with epoxy resin curing agent and fillers. Metallographic microscopy，scanning electron microscopy（SEM），EDS elemental analysis，and electrochemical impedance spectroscopy（EIS） were used to systematically characterize the microstructure evolution of the conversion film and the corrosion and anti-corrosion behavior of the coating，and the protective performance was further validated by a neutral salt spray test（NSS）.［Results］The composite coating，formulated with bisphenol F-type epoxy resin，phenolic amine curing agent，zinc phosphate，and a blend of tannic acid and gallic acid as rust converters，exhibited a R_ct of 9. 533×10¹⁰ Ω ·cm² after 2 000 hours of immersion in a 3. 5%NaCl solution. Moreover，the anti-corrosion performance of the coating applied on the rusted steel plates surpassed that on bare steelsamples. The NSS showed that the corrosion products at the scribe on the coating did not spread or showany other signs of deterioration.［Conclusion］ The compound functional acid-epoxy rust anti-corrosion coating，prepared with the optimal coating formulation（DER354 resin 23. 7%，LITE 2009 curing agent 6. 4%，zinc phosphate 57. 9%，tannic acid 2%，gallic acid 2%，diluent 6%，additive 2%）， can provide effective protection for rusted steel.

［Objective］ To address the insufficient long-term protective performance of waterborne anticorrosive coatings，composite fillers with excellent dispersibility and dual shielding-passivation anticorrosive capabilities were prepared. This study aimed to clarify the effects of keypreparation and formulation parameters on coating performance，thereby providing support for the development of high-performance waterborne anticorrosive coatings.［Methods］Polyaniline-mica iron oxide（PANI-MIO）composite fillers were prepared via in-situ polymerization of aniline（ANI）to form polyaniline（PANI） on the surface of mica iron oxide（MIO）. Their successful preparation was characterized by FT-IR and SEM. The fillers were dispersed in waterborne epoxy resin to form coatings，and the effects of the ANI/MIO feeding ratio and filler content on the dispersibility of PANI-MIO，as well as the mechanical and anticorrosive properties of the coatings，were systematicallyinvestigated.［Results］ PANI-MIO with different ANI/MIO feeding ratios maintained uniform dispersion in the coatings，but agglomeration occurred when the filler content was ≥15%. PANI-MIOslightly improved the coating hardness without affecting its impact resistance and cross-cut adhesion.The coating exhibited optimal anticorrosive performance when the ANI/MIO feeding ratio was 0. 1∶1 and the filler content was 15%. After immersion in 3. 5%NaCl solution for 40 days，its |Z|_{0. 1 Hz} remained above 10⁹ Ω·cm²，the intact coating showed non-corrosion after 3 000 h in the neutral salt spray test， and only slight local corrosion appeared at the scratch after 720 h in the scratch salt spray test. Incontrast，the |Z|_{0. 1 Hz} of the pure resin coating decreased to 10^{7. 5} Ω ·cm² in the same period，with blistering and pitting occurring after 600 h in the salt spray test，and obvious corrosion diffusion at the scratch after 240 h.［Conclusion］The PANI-MIO composite filler enhances anticorrosive performance through the synergistic effect of“MIO shielding + PANI passivation”. The optimal combination is an ANI/MIO feeding ratio of 0. 1∶1 and a filler content of 15%. This filler can balance the dispersionstability of the coating and its comprehensive mechanical-anticorrosive performance，providing afeasible solution for the upgrading of waterborne coatings in the industrial heavy anticorrosive field.

［Objective/Significance］ Non-food biomass primarily comes from landscape plants（such as wood，cellulose，etc.），and it boasts advantages including low carbon emissions，a wide range of sources，and environmental friendliness. Utilizing this type of biomass to produce resins can not onlyreduce reliance on limited petroleum resources but also avoid the issue of grain consumption associatedwith food-based biomass.［Analysis/Discussion/Progress］This paper focuses on the current researchprogress of non-food biobased resins for coatings and raises the existing issues of high production costs， performance limitations and poor stability difficulty in large-scale production，and inconsistent quality.［Conclusion/Prospect］Research on non-food bio-based resins for coatings should focus on specific aspects，including the development of new biomass raw materials，performance tailoring of resin/nanocomposite materials，and methods to enhance performance such as blending with other resins or chemical modification. 

［Objective］ This study aims to rapidly evaluate the performance of anticorrosiveweatherable coatings used in marine environments of China.［Methods］ Two artificial accelerated ageing test procedures suitable for China..s actual marine environments were established referring to thecyclic ageing test procedures outlined in ISO 12944 and Norsok M501. Procedure 1（P1）consists of one cycle：72 h of UV aging（UVA-340）/condensation + 72 h of salt spray + 24 h of high-low temperature alternation. Procedure 2（P2）consists of one cycle：120 h of UV ageing（UVB-313）/condensation + 48 h of salt spray. Verification tests were conducted，with natural weathering exposures in the South China Sea and East China Sea as benchmarks for comparison.［Results］Procedure P1 was suitable for evaluating weatherable coatings with low requirements for the appearance performance but high requirements for corrosion resistance，such as those for offshore platforms. It achieved an accelerationfactor of more than 21 times for anti-corrosion performance. Procedure P1 was suitable for evaluatingcoatings with high requirements for appearance performance，such as ship topside paints. The acceleration rate relative to one-year atmospheric exposure was about 4-6 times，and approximately 7-9. 5 times relative to two-year atmospheric exposure.［Conclusion］ Both cyclic ageing proceduresdemonstrated significant acceleration effect for investigating anticorrosive weatherable coating systems.However，the appropriate test procedure should be selected according to the specific application scenario. 

［Objective］To address the issues of poor drying performance in low-temperature field environments and difficult application of rain erosion-resistant antistatic coatings for radomes.［Methods］A color paste was prepared using polyester polyols，pigments，and conductive fillers. An NCO-terminated elastic prepolymer was synthesized from this color paste，trimethylolpropane（TMP）， and isophorone diisocyanate（IPDI）. Subsequently，a one-component elastic repair coating for radomeswas developed using the NCO-terminated elastic prepolymer，N-［（triethoxysilyl）methyl］aniline（ND-42），and anti-aging additives and organic matting agents. The structure，molecular weight，and molecular weight distribution were characterized using Fourier transform infrared spectroscopy（FT-IR） and gel permeation chromatography（GPC）. The effects of different silane coupling agent modificationson the coating's elastic properties and application performance were investigated，along with the impacts of conductive fillers，various matting agents，and anti-aging additive dosages on the coating ..s antistatic properties，UV aging resistance，and surface characteristics.［Results］ A one-component elastic protective coating was successfully developed，capable of curing under field conditions（5-40 ℃， RH=20%-75%）. The coating modified with ND-42 and matted with organic matting agents exhibited excellent elasticity，good wear resistance，and a smooth，fine surface texture. Incorporation of conductive fillers achieved surface resistivity of 0. 5-10 MΩ while enhancing tensile strength. Afteradding the compound anti-aging additive，the coating remained free from powdering，cracking and ΔE= 2. 1 after 1 000 hours of UV aging.［Conclusion］ A protective coating suitable for field repair of radomes had been successfully developed. This coating provided a feasible approach for repair applications in the field of radomes.

［Objective］ This study aims to investigate the mechanism of rain erosion on windturbine blade coating and the influencing factors of rain erosion.［Methods］This study focuses on therainfall characteristics of the operating environment for wind turbine blades. Rain erosion resistancetests were conducted under six different rainfall conditions，by the rotating arm rain erosion test method， while maintaining identical environmental temperature，test speed，and raindrop diameter. Throughanalysis and comparison of the time of coating failure and mass loss under varying rainfall conditions.［Results］ It was observed that coatings in the tip to middle region exhibited different degrees ofbreakdown. The higher of rainfall，the greater the impact on the coating performance. However，the degradation of the coating protective performance exhibited a non-linear relationship with increasingrainfall intensity.［Conclusion］When evaluating the performance of wind turbine blade coatings inactual wind field environments based on laboratory rain erosion test results，the damaging effects of different rainfall intensities on the coatings should be comprehensively considered，and rainfall conditions should be set based on the rainfall environment in wind fields. 

［Objective/Significance］Offshore oil platforms are subjected to prolonged exposure tocomplex and severe marine corrosive environments，with the splash zone experiencing particularlyaggressive corrosion. Such corrosion can compromise the structural integrity of steel components，lead to pipeline failures，and potentially trigger significant safety and environmental incidents. Effectiveprotection of steel structures in the splash zone is therefore critical to ensuring the operational safety ofoffshore oil platforms.［Analysis/Discussion/Progress］This study provides a comprehensive review ofprevalent corrosion protection technologies for steel structures in the splash zone，encompassingmetallic coatings，metal or alloy sheathing，heavy-duty anti-corrosion coatings，composite cladding， and viscoelastic materials. A comparative evaluation is conducted based on criteria such as long-termprotective efficacy，construction efficiency，and economic viability. Metallic coatings and metal or alloy sheathing exhibit superior protective performance but entail high costs and complex applicationprocesses. Heavy-duty anti-corrosion coatings offer ease of application and cost-effectiveness，yet their impact resistance is limited. Composite cladding demonstrates excellent corrosion resistance andimpact durability but is characterized by lower construction efficiency and higher costs. Viscoelasticmaterials provide high application efficiency and reduced costs but are constrained by limited impactresistance.［Conclusion/Prospect］ Each technology presents distinct advantages and limitations， necessitating careful selection based on site-specific requirements. As marine oil and gas explorationintensifies，there is an urgent need to develop advanced corrosion protection technologies for the splashzone that combine long-term durability，enhanced impact resistance，high construction efficiency，and optimal cost-effectiveness.

［Objective/Significance］ Aiming at the severe corrosion threat in the marine environment and the limitations of traditional anti-corrosion coatings，the technical core and bottlenecks of self-warning and self-healing intelligent anti-corrosion coatings were clarified to provide a reference for their research and development as well as engineering application.［Analysis/Discussion/Progress］Focusing on marine scenarios，this paper combs the research status and functional mechanisms of self-reporting，self-healing and multi-functional integrated intelligent anti-corrosion coatings，summarizes existing problems and proposes corresponding solutions. It clarifiesthat self-warning relies on fluorescent/color-developing materials，self-healing depends on carrier release/dynamic bonds，and multi-function is achieved through composite filler integration；meanwhile， it identifies bottlenecks such as weak anti-interference of signals and difficulty in balancing self-healing and weather resistance，as well as their corresponding solutions.［Conclusion/Prospect］ Intelligent anti-corrosion coatings are an inevitable trend for long-term corrosion protection of marineengineering，in the future，it is necessary to break through technologies such as multi-functionalsynergy and extreme environment adaptation to promote their engineering application.