埋地管线用重防腐涂料的技术发展

介绍了埋地管线用重防腐涂料的主要发展历程,对几种常用埋地管线用防腐材料进行了评价和对比,从中得出熔结环氧粉末涂料应用于埋地管线中的优势。     

基于水下清洗的舰船防污优化研究

将水下清洗与防污涂层性能的持续发挥联系在一起,分析了水下清洗延长防污涂层期效的过程,并以经济性为指标提出了优化分析方法,对水下清洗方式进行了比较,得出了空化射流水下清洗方式更有利于防污涂层性能的持续发挥。     

涂布漆抗张强度检测应注意问题的探讨

主要探讨硝化纤维素与酯、醇、芳香烃类等混合溶剂制成的、涂装于飞机蒙布上的硝基涂布漆的抗张强度检测过程中应注意的问题。     

船舶表面新型环保防污涂料研究进展

随着人们环保意识的不断提高,环保、广谱的新型防污涂料已经成为当前海洋防污领域的研究热点。概述生物污损的形成过程和污损机制,综述近年来新型环保防污涂料的研究进展,包括污损释放防污涂料、光催化防污材料和基于仿生策略衍生而出的天然防污剂、水凝胶防污涂层等;介绍抗菌肽的作用机制和改性表面的制备手段,指出该类防污材料具有广谱的抗菌活性和环境友好性,有望成为具有理想防污功能的新型海洋防污涂料;展望未来防污涂料的研究方向,旨在为发展高效、广谱、绿色的海洋防污涂料提供参考。     

Estimating thermal performance of cool colored paints

The purpose of this study is to investigate the thermal performance of cool colored acrylic paints containing infrared reflective pigments in comparison to conventional colored acrylic paints of similar colors (white, brown and yellow) applied on sheets of corrugated fiber cement roofing. Evaluated properties are: color according to ASTM D 2244-89, the UV/VIS/NIR reflectance according to ASTM E 903-96, and thermal performance by exposure to infrared radiation emitted from a lamp with the measurement of surface temperatures of the specimens with thermocouples connected to a data logging system.Results demonstrated that the cool colored paint formulations produced significantly higher NIR reflectance than conventional paints of similar colors, and that the surface temperatures were more than 10 °C lower than those of conventional paints when exposed to infrared radiation. The study shows that cool paints enhance thermal comfort inside buildings, which can reduce air conditioning costs.     

PEG/GO/TiO2纳米复合材料改性PVDF膜的制备及其抗污性能

为改善聚偏氟乙烯(PVDF)膜的抗污性能,以聚乙二醇2000接枝的GO/TiO₂(PEG/GO/TiO₂)纳米复合材料为添加剂,通过非溶剂诱导沉淀相分离法制备了一系列PEG/GO/TiO₂/PVDF复合超滤膜。采用FTIR、SEM和接触角测试仪对其结构和形貌进行了表征,采用超滤法评价其纯水通量和抗污性能。结果表明,当PEG/GO/TiO₂纳米复合材料质量分数为0.60%时,制备的PEG/GO/TiO₂/PVDF复合超滤膜(记为0.60%PEG/GO/TiO₂/PVDF)表现出最佳的亲水性和抗污性能,其接触角比PVDF膜下降8.2°,总孔隙率增加13.40%,PEG/GO/TiO₂纳米复合材料在PVDF膜中分散较均匀。在0.08 MPa的工作压力下,0.60%PEG/GO/TiO₂/PVDF的纯水通量高达282.44 L/(m²·h),对腐植酸溶液的过滤通量为131.96 L/(m^2...     

Enhanced Anticorrosion and Antifouling Properties of Lubricant-Infused Pyramidal Polydimethylsiloxane Coating

Although slippery liquid-infused porous surfaces (SLIPSs) have been extensively studied for anticorrosion and antifouling applications, their durability and stability restrict their practicality. Herein, a technique is presented for fabricating SLIPS with dual-protection. First, a polydimethylsiloxane (PDMS) coating with a pyramidal morphology is fabricated through mold-based lithographic techniques. The mold is prepared by applying a texturing process to a monocrystalline silicon wafer of the type used to produce solar cells. Once infused with lubricant, the SLIPS is prepared and has a water-contact angle of 112°, on an inclined surface, water droplets slide easily off its surface. Due to the excellent chemical stability and low superficiality of the lubricant layer, the SLIPS offers excellent antifouling and anticorrosion properties. In a static marine environment, the SLIPS has an extremely low coverage fraction of algae. After being immersed in a 3.5% NaCl solution for 400 days, |Z|_0.01 Hz ≈ 10¹¹ Ω, and the phase angle at high frequency is approximately −90°. SLIPSs based on the PDMS coating provide dual protection (anticorrosion and antifouling), showing that this design approach produces SLIPSs with excellent potential for applications in marine environments.     

基于聚合物微球接枝硅油的超滑棉织物制备及其防污性能

为提高超滑织物的物理化学稳定性,首先采用乳液聚合法以乙烯基改性纳米二氧化硅(V-SiO₂)为原料制备自黏性核壳型聚合物微球,将其经浸涂-焙烘工艺组装到棉织物表面得到粗糙基底;然后利用氨基-环氧基接枝反应、氨基-羟基氢键作用将氨基硅油接枝在粗糙基底表面得到超滑织物。探究了超滑织物的疏液、防污及物理化学稳定性能。结果表明:超滑织物中超滑表面的粗糙结构由粒径为321.3 nm的微球构成,表面水滴接触角为138°;水、二甲基亚砜在超滑织物表面的滑动角分别为7°、15°;接触番茄酱、咖啡污物后,超滑表面黏附量显著减少;经200 mL以内水冲击后,超滑织物表面水、二甲基亚砜的滑动角分别小于12°、26°;在pH值为3~9条件下其表面液滴的接触角稳定在42°~49°之间。     

超分子水凝胶的制备与应用

水凝胶在日常生产与生活中发挥着重要作用,但传统水凝胶由于缺乏刺激响应性等动态性,无法满足日益增长的生产与生活需求。因此,制备并应用具有优异自修复性、刺激响应性以及可适应性等动态性的超分子水凝胶（SHGs）备受关注。综述了SHGs的制备与应用研究进展,系统归纳了高分子类SHGs（如聚丙烯酸SHGs、聚丙烯酰胺SHGs等）和天然高分子类SHGs（如壳聚糖SHGs、透明质酸SHGs等）的合成方法,阐述了SHGs在生物医药、柔性传感、防污材料等领域中的应用情况,最后展望了SHGs存在问题及发展趋势。     

叔碳酸酯改性聚酯印铁涂料的研制

采用叔碳酸酯为原料合成高固体含量聚酯树脂，与甲醚化三聚氰胺甲醛树脂交联制备聚酯印铁涂料。研究了叔碳酸酯的添加量对涂膜性能的影响，研究发现当叔碳酸的添加量为3％－5％，聚酯印铁涂料具有良好的耐冲击性能，优异的附着力和耐化学品性。