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Bienzyme system immobilized in biomimetic silica for application in antifouling coatings 被引量:2
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作者 王洪武 姜艳军 +1 位作者 周丽亚 高静 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第8期1384-1388,共5页
Antifouling coatings are used extensively on vessels and underwater structures. Conventional antifouling coatings contain toxic biocides and heavy metals, which may induce unwanted adverse effects such as toxicity to ... Antifouling coatings are used extensively on vessels and underwater structures. Conventional antifouling coatings contain toxic biocides and heavy metals, which may induce unwanted adverse effects such as toxicity to non-target organisms, imposex in gastropods and increased multiresistance among bacteria. Therefore,enzyme-based coatings could be a new alternative solution. A H2O2-producing bienzyme system was developed in this study. H2O2 can be produced from starch by the cooperation of α-amylase and glucose oxidase, which promotes the hydrolysis of polymeric chain and oxidizes the glucose to produce H2O2, respectively. The encapsulated bienzyme(A-G@BS) exhibits enhanced stabilities of thermal, pH, recycling and tolerance of xylene. The A-G@BScontaining coating releases H2O2 at rates exceeding a target of 36 nmol·cm-2·d-1for 90 days in a laboratory assay. The results demonstrate that the method is a promising coating technology for entrapping active enzymes,presenting an interesting avenue for enzyme-based antifouling solutions. 展开更多
关键词 antifouling Bienzyme H2O2 coating
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Extraction of Protease Produced by Sea Mud Bacteria and Evaluation of Antifouling Performance 被引量:2
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作者 WANG Li YU Liangmin LIN Cunguo 《Journal of Ocean University of China》 SCIE CAS CSCD 2019年第5期1139-1146,共8页
Enzyme-based antifouling coatings are potential alternative to traditional tributyltin-based coatings in the marine biofouling control depended on its environmental friendliness.Proteases are usually the key antifouli... Enzyme-based antifouling coatings are potential alternative to traditional tributyltin-based coatings in the marine biofouling control depended on its environmental friendliness.Proteases are usually the key antifouling active components in enzyme based antifouling coatings.In this work,based on biological antagonism effect,a marine proteolytic bacterial strain of Bacillus velezensis was isolated from the sea mud,and denoted as SM-1.The scanning electron microscope(SEM)revealed that the bacteria are rod-shaped with length 1-1.3μm.The protease-producing conditions of SM-1 were investigated,and it was found that the culture solution displays higher proteolytic activity under the culture conditions of 35℃,10‰-20‰salinity,pH 6-9 and more than 7 d culture time.Moreover,the 25 kDa protein was confirmed to be the main active component in the crude protease,which was revealed via the experiment of SDS-PAGE.The antifouling assay indicated that the protease SM-1 has remarkable effect on the decomposition of barnacle cement and diatom secretion,and also can effectively inhibit the attachment of barnacle cyprids,diatom and mussel byssus.Therefore,this protease potentially can be used as environmental-friendly antifoulant of enzyme-based marine antifouling coatings,and this work also provides a new approach to obtain antifouling protease via isolating proteolytic bacteria from the sea mud surrounding representative fouling organisms. 展开更多
关键词 BIOFOULING protegolytic BACTERIA PROTEASE antifouling coatings
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Adhesion of foulings on surface energy of silicone rubber coatings
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作者 Tian Jun and Xue Qunji 《Acta Oceanologica Sinica》 SCIE CAS CSCD 1999年第1期97-102,共6页
All antifouling paints in use today are effective because toxic ingredients based on heavy metals are included in their formulation, the environmental effects of organotins in seawater have been a topic of much intere... All antifouling paints in use today are effective because toxic ingredients based on heavy metals are included in their formulation, the environmental effects of organotins in seawater have been a topic of much interest and concern in recent years. This study has found that the material of rich silicone rubber on coating surface based on the low discursive component of surface energy makes barnacle settling on them unable to attach permanently and is removed by moving water. The material Permits only small amounts of fouling to attach, such as algae, Ciona intestinalis, because the high polar interaction of coating surface may absorb water to form water film in sea, and cause very low adhesion of the fouling spotes. 展开更多
关键词 coatING low surface energy silicone rubber antifouling EP/PU
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Eco-friendly polysaccharide coatings for antifouling and dragreduction and potential application for marine devices 被引量:1
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作者 Hao YANG Liguo QIN +5 位作者 Wenhui ZHAO Fagla Jules MAWIGNON Hui GUO Yongkang WU Yali ZHANG Guangneng DONG 《Friction》 SCIE EI CAS CSCD 2024年第4期726-744,共19页
Traditional antifouling agents usually have a certain toxic effect on marine environments and non-target organisms.In this study,Dictyophora indusiata polysaccharide(DIP)was applied as a natural antifouling surface mo... Traditional antifouling agents usually have a certain toxic effect on marine environments and non-target organisms.In this study,Dictyophora indusiata polysaccharide(DIP)was applied as a natural antifouling surface modifier to prepare the surface coating for marine antifouling.Three DIP coatings were prepared:D.indusiata spore polysaccharide(DISP),D.indusiata volva polysaccharide(DIVP),and D.indusiata embryonic body polysaccharide(DIEP).The antifouling,tribological,and anticorrosion behavior of the coatings were examined.Results revealed that the three kinds of DIP coatings had excellent antifouling properties,which could effectively prevent the adhesion of Chlorella and the attachment of water-based and oily stains on the surface.Additionally,the coatings showed great mechanical stability and could maintain an extremely low coefficient of friction(COF<0.05)after continuous wear.The drag reduction rate of the coated surfaces reached 5%,showing a powerful lubrication performance.Furthermore,the DIP coatings presented an outstanding corrosion resistance,where the equivalent circuit impedances were 4-9 orders of magnitude higher than the control groups.This research showed a promising prospect of surface coating fabrication with DIP for marine devices to achieve the purpose of antifouling and drag reduction. 展开更多
关键词 Dictyophora indusiata polysaccharide(DIP)coating antifouling ANTICORROSION lubrication and drag reduction
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Review:Fabrication and Application of Zwitterion-based Functional Coatings
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作者 Jinyan Tan Shuxue Zhou +1 位作者 A.Catarina C.Esteves Limin Wu 《Journal of Harbin Institute of Technology(New Series)》 CAS 2022年第6期9-26,共18页
Zwitterion-based materials by virtue of their special physical and chemical characteristics have attracted researchers to utilize them for fabricating functional coatings. The simultaneous presence of positive and neg... Zwitterion-based materials by virtue of their special physical and chemical characteristics have attracted researchers to utilize them for fabricating functional coatings. The simultaneous presence of positive and negative charges renders the zwitterion-based materials with electrostatically induced hydration properties, which enables a high resistance towards oily pollutants, nonspecific protein adsorption, bacterial adhesion and biofilm formation. This review starts from the working mechanism of zwitterions and covers the fabrication strategies of zwitterion-based functional coatings, namely the zwitterion-bearing binder route, the zwitterion-bearing additive route and the post-generation of coatings containing zwitterionic precursors. The applications of zwitterion-based functional coatings are discussed, including medical implants, marine antifouling and oil-resistant coatings, with focus on the relevant mechanisms of the zwitterion-containing coatings for a specific performance. Finally, some comments and perspectives on the current situation and future development of zwitterion-based functional coatings are given. 展开更多
关键词 zwitterionic materials functional coatings medical implant coatings marine antifouling coatings oil-resistant coatings amphiphilic coatings degradable coatings
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Nontoxic Marine Anti-fouling Coating Containing Capsaicin 被引量:2
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作者 史航 王鲁民 《Marine Science Bulletin》 CAS 2006年第1期92-96,共5页
This paper summarizes a nontoxic Anti-fouling coating utilizing capsaicin as an anti-fouling agent. The capsaicin constituent used in the coating has a rating from about 100 000 to about 1 500 000 Scoville Heat Units.... This paper summarizes a nontoxic Anti-fouling coating utilizing capsaicin as an anti-fouling agent. The capsaicin constituent used in the coating has a rating from about 100 000 to about 1 500 000 Scoville Heat Units. The capsaicin is mixed with a silicon dioxide and then solubilized into a free-flowing homogeneous liquid oleoresin composition by adding a solvent to increase solubility and facilitate mixing. The oleoresin capsaicin liquid solution is mixed with a suitable corrosion resistant epoxy resin, which is then mixed with a hardening catalyst and applied to the surface to be treated. 展开更多
关键词 antifouling coating CAPSAICIN nontoxic fishnet marine fouling organism
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Structures and antifouling properties of low surface energy non-toxic antifouling coatings modified by nano-SiO_2 powder 被引量:18
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作者 CHEN MeiLing, QU YuanYuan, YANG Li & GAO Hong Laboratory of Marine Coatings, Dalian Jiaotong University, Dalian 116028, China 《Science China Chemistry》 SCIE EI CAS 2008年第9期848-852,共5页
Antifouling coatings are used to improve the speed and energy efficiency of ships by preventing or- ganisms, such as barnacles and weed, building up on the underwater hull and helping the ships movement through the wa... Antifouling coatings are used to improve the speed and energy efficiency of ships by preventing or- ganisms, such as barnacles and weed, building up on the underwater hull and helping the ships movement through the water. Typically, marine coatings are tributyltin self-polishing copolymer paints containing toxic molecules called biocides. They have been the most successful in combating bio- fouling on ships, but their widespread use has caused severe pollution in the marine ecosystem. The low surface energy marine coating is an entirely non-toxic alternative, which reduces the adhesion strength of marine organisms, facilitating their hydrodynamic removal at high speeds. In this paper, the novel low surface energy non-toxic marine antifouling coatings were prepared with modified acrylic resin, nano-SiO2, and other pigments. The effects of nano-SiO2 on the surface structure and elastic modulus of coating films have been studied, and the seawater test has been carried out in the Dalian Bay. The results showed that micro-nano layered structures on the coating films and the lowest surface energy and elastic modulus could be obtained when an appropriate mass ratio of resin, nano-SiO2, and other pigments in coatings approached. The seawater exposure test has shown that the lower the sur- face energy and elastic modulus of coatings are, the less the marine biofouling adheres on the coating films. 展开更多
关键词 NON-TOXIC antifouling coating low surface energy ELASTIC MODULUS NANO-SIO2
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Antifouling mechanism of natural product-based coatings investigated by digital holographic microscopy 被引量:2
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作者 Jiansen Pan Qingmei Peng +5 位作者 Guoliang Zhang Qingyi Xie Xiangjun Gong Pei-Yuan Qian Chunfeng Ma Guangzhao Zhang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2021年第25期200-207,共8页
Using natural product-based antifouling coatings has proven to be an effective strategy to combat biofouling.However,their antifouling mechanisms are still unclear.In this study,the antifouling mechanism of natural pr... Using natural product-based antifouling coatings has proven to be an effective strategy to combat biofouling.However,their antifouling mechanisms are still unclear.In this study,the antifouling mechanism of natural product-based coatings consisting of bio-sourced poly(lactic acid)-based polyurethane and ecofriendly antifoulant(butenolide)derived from marine bacteria was revealed by observing 3D bacterial motions utilizing a 3D tracking technique-digital holographic microscopy(DHM).As butenolide content increases,the density of planktonic marine bacteria(Pseudomonas sp.)near the surface decreases and thus leads to a reduced adhesion,indicating that butenolide elicits the adaptive response of Pseudomonas sp.to escape from the surface.Meanwhile,among these remained cells,an increased percentage is found to undergo subdiffusive motions compared with the case of smaller dose of butenolide.Further experiments show that butenolide can accelerate their swimming velocity and reduce flick frequency.Antibacterial assay confirms that butenolide-based coating shows high efficacy of antifouling performance against Pseudomonas sp.but without killing them like 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one(DCOIT). 展开更多
关键词 antifouling coatings Biodegradable polymer Natural antifoulant BUTENOLIDE Digital holographic microscopy
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Antifouling nanocomposite polymer coatings for marine applications:A review on experiments,mechanisms,and theoretical studies 被引量:2
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作者 Sepideh Pourhashem Abdolvahab Seif +8 位作者 Farhad Saba Elham Garmroudi Nezhad Xiaohong Ji Ziyang Zhou Xiaofan Zhai Majid Mirzaee Jizhou Duan Alimorad Rashidi Baorong Hou 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第23期73-113,共41页
Marine fouling is a worldwide challenge with huge damages on industrial structures,side effects on economics of industries,and environmental and safety-related hazards.Different approaches have been used for combating... Marine fouling is a worldwide challenge with huge damages on industrial structures,side effects on economics of industries,and environmental and safety-related hazards.Different approaches have been used for combating fouling in the marine environment.Meanwhile,nanocomposite polymer coatings are a novel generation of antifouling coatings with merits of toxin-free chemical composition and ease of large-scale application.Nanomaterials such as nano-metals,nano-metal oxides,metal-organic frameworks,carbon-based nanostructures,MXene,and nanoclays have antibacterial and antifouling properties in the polymer coatings.Besides,these nanomaterials can improve the corrosion resistance,mechanical strength,weathering stability,and thermal resistance of the polymer coatings.Therefore,in this review paper,the antifouling nanocomposite coatings are introduced and antifouling mechanisms are discussed.This review explicitly indicates that the antifouling efficiency of the nanocomposite coatings depends on the properties of the polymer matrix,the inherent properties of the nanomaterials,the weight percent and the dispersion method of the nanomaterials within the coating matrix,and the chemicals used for modifying the surface of the nanomaterials;meanwhile,the hybrids of different nanomaterials and appropriate chemical agents could be used to improve the antifouling behavior of the prepared nanocomposites.Moreover,the theoretical studies are introduced to pave the way of researchers working on theantifouling coatings,and the importance of the theoretical studies and computational modeling along with the experimental research is notified to develop antifouling coatings with high efficiency. 展开更多
关键词 antifouling nanocomposite coatings Nano-metal oxides Carbon-based nanomaterials MXene and nanoclays Theoretical studies
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Polyethersulfone-polyvinylpyrrolidone composite membranes: Effects of polyvinylpyrrolidone content and polydopamine coating on membrane morphology, structure and performances 被引量:1
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作者 Yanna Wu Jianxian Zeng +4 位作者 Yajie Zeng Hu Zhou Guoqing Liu Jian Jian Jie Ding 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2021年第10期84-97,共14页
Hydrophilic modification is a promising method to inhibit fouling formation on ultrafiltration membrane.In this work,different mass concentrations(1%–16%)of hydrophilic polyvinylpyrrolidone were incorporated into pol... Hydrophilic modification is a promising method to inhibit fouling formation on ultrafiltration membrane.In this work,different mass concentrations(1%–16%)of hydrophilic polyvinylpyrrolidone were incorporated into polyethersulfone(PES)membranes fabricated by none-solvent induced phase separation.Then,polydopamine(PDA)coating on the surface of prepared membrane was carried out at pH 8.5.The morphology and structure,surface hydrophilicity,permeation flux,BSA rejection,antifouling and stability performances of PES and PDA/PES modified membranes were investigated in detail.The results indicated that PDA was successfully attached onto the membranes.Membrane hydrophilicity was evaluated by water contact angle measurement.The contact angles of modified membranes reduced remarkably,suggesting that the membrane hydrophilicities were significantly increased.The results of filtration tests,which were done by dead-end filtration of bovine serum albumin solution,showed that the properties of permeability and fouling resistance were obviously improved by PDA modification.When polyvinylpyrrolidone mass content reached 10%,flux recovery ratio of modified membrane was up to91.23%,and its BSA rejection were over 70%.The results of stability tests showed that the modified membranes had good mechanical stability and chemical stability.This facile fabrication procedure and outstanding performances suggested that the modified membranes had a potential in treating fouling. 展开更多
关键词 Polyethersulfone membrane Polydopamine coating HYDROPHILICITY Permeability antifouling
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Progress in Polymer-Ceramic Hybrid Antifouling Coatings 被引量:1
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作者 Zhen-Qiang Zhang Yin-Jie Huang +1 位作者 Chun-Feng Ma Guang-Zhao Zhang 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2023年第7期995-1001,共7页
Simultaneous realization of superior mechanical and antifouling properties is critical for a coating. The use of stereoscopic polysiloxanes in place of linear polysiloxanes to fabricate antifouling coatings can combin... Simultaneous realization of superior mechanical and antifouling properties is critical for a coating. The use of stereoscopic polysiloxanes in place of linear polysiloxanes to fabricate antifouling coatings can combine properties of organic and inorganic materials, i.e., they can exhibit both high hardness and wear resistance from inorganic components as well as the flexibility and tunability from organic components. This strategy is used to prepare hard yet flexible antifouling coatings or polymer-ceramic hybrid antifouling coatings. In this mini-review, we report the recent advances in this field. Particularly, the effects of stereoscopic polysiloxane structures on their mechanical and antifouling properties are discussed in detail. 展开更多
关键词 antifouling coating Organic-inorganic hybrid SOL-GEL Hard yet flexible
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一种基于射频辉光放电光谱仪的防污漆中铜元素含量的快速检测方法 被引量:1
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作者 汪杰 张海江 +4 位作者 夏萌 李江江 宋震 尹继凯 桂泰江 《合成材料老化与应用》 CAS 2024年第2期17-19,共3页
利用射频辉光放电光谱仪测定防污漆中铜元素含量,可在1h内准确测定出结果,同时分析渗出层的厚度,可以快速判定防污漆的防污效果。相比于传统的采用电感耦合等离子体原子发射(ICP-OES)或者原子吸收光谱仪的测量方法,该方法具有以下优势:... 利用射频辉光放电光谱仪测定防污漆中铜元素含量,可在1h内准确测定出结果,同时分析渗出层的厚度,可以快速判定防污漆的防污效果。相比于传统的采用电感耦合等离子体原子发射(ICP-OES)或者原子吸收光谱仪的测量方法,该方法具有以下优势:不需要复杂冗长的前处理过程,测试时间短,也不会产生废酸等废液,同时可以分析渗出层的厚度。经测试发现,模拟实验后防污漆表层铜元素含量为41.0%,随着深度的增加,铜元素含量先快速降低,随后缓慢增加,最后趋于平稳。由表面剥蚀到5μm深度时,铜含量降到最低值40.5%。此深度也就是“渗出层”的厚度。随着深度进一步增加,铜含量增加至40.9%,在23.0μm趋于稳定。 展开更多
关键词 防污涂料 铜含量 渗出层 辉光放电
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丙烯酸硅烷酯柔性自抛光防污涂料制备及性能
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作者 于雪艳 王效军 +6 位作者 陈正涛 康思波 张华庆 刘术辉 丛巍巍 张凯 桂泰江 《精细化工》 EI CAS CSCD 北大核心 2024年第5期1030-1035,共6页
以甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸异辛酯、丙烯酸甲氧基乙酯、丙烯酸三异丙基硅酯为单体,制备了丙烯酸硅烷酯基体树脂,将其与韧性树脂(液态聚丁二烯)共同作为成膜共混树脂,并以Cu_(2)O作为主要防污剂组分、吡啶硫酮铜(CuPT)和代森... 以甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸异辛酯、丙烯酸甲氧基乙酯、丙烯酸三异丙基硅酯为单体,制备了丙烯酸硅烷酯基体树脂,将其与韧性树脂(液态聚丁二烯)共同作为成膜共混树脂,并以Cu_(2)O作为主要防污剂组分、吡啶硫酮铜(CuPT)和代森锌(Zineb)为辅助有机防污剂组分,配制了柔性自抛光防污涂料。对丙烯酸硅烷酯基体树脂进行了FTIR表征和玻璃化转变温度(Tg)测定,对成膜共混树脂进行了SEM测试,对柔性自抛光防污涂料进行了柔韧性、附着力、吸水率和防污性能测试。结果表明,丙烯酸硅烷酯基体树脂的Tg=–20.54℃时,具有较好的物理机械性能;韧性树脂可以作为外增塑手段增加丙烯酸硅烷酯基体树脂的柔韧性,当m(丙烯酸硅烷酯基体树脂)∶m(韧性树脂)=7∶3时,成膜共混树脂的相容性最好;柔性自抛光防污涂料柔韧性为1级,在弹性体基材表面附着力达到4.0 MPa;经过60 d测试,吸水率为1.1%~1.2%;浅海浸泡挂板36个月显示出明显的防污效果。 展开更多
关键词 丙烯酸硅烷酯树脂 柔性防污涂料 增塑剂 韧性树脂 海洋 功能材料
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足球鞋用有机硅改性聚氨酯合成革的制备方法及防污性能研究
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作者 张卫军 王志柱 《中国皮革》 CAS 2024年第12期127-131,共5页
由于足球鞋用聚氨酯合成革表面易于沾水与沾污,且去污难度较大,极易影响足球鞋功能性与应用性。因此,以有机硅类化合物针对聚氨酯合成革进行防水防油防污整理以提高其防污性能势在必行。据此,本文以有机硅改性制备了足球鞋用防污聚氨酯... 由于足球鞋用聚氨酯合成革表面易于沾水与沾污,且去污难度较大,极易影响足球鞋功能性与应用性。因此,以有机硅类化合物针对聚氨酯合成革进行防水防油防污整理以提高其防污性能势在必行。据此,本文以有机硅改性制备了足球鞋用防污聚氨酯合成革,并对其防污性能进行了测试表征。结果发现,相较于未改性聚氨酯合成革,有机硅改性聚氨酯合成革的水接触角较大,表面能较小,吸水率较低;相较于未改性聚氨酯合成革,有机硅改性聚氨酯合成革的口红、咖啡、油性笔等残留污渍较轻,且表面触感相对较好。可见,有机硅端羟基聚硅氧烷的掺入可赋予聚氨酯合成革优异的防污性能。 展开更多
关键词 足球鞋 端羟基聚硅氧烷 聚氨酯合成革 聚氨酯涂层 防污性能
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船舶防污减阻涂料研究进展 被引量:1
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作者 孙一鸣 丛巍巍 +2 位作者 张凯 桂泰江 王海滨 《材料导报》 EI CAS CSCD 北大核心 2024年第S01期544-547,共4页
海洋生物污损引发船体腐蚀加速、寿命缩短、航行阻力增加以及燃料损耗增加等问题,已成为海洋工业的全球性问题。随着人们对海洋环保意识的提高,传统防污涂料释放防污剂的污染问题被日益关注,研究环境友好型防污减阻涂料逐渐成为发展趋... 海洋生物污损引发船体腐蚀加速、寿命缩短、航行阻力增加以及燃料损耗增加等问题,已成为海洋工业的全球性问题。随着人们对海洋环保意识的提高,传统防污涂料释放防污剂的污染问题被日益关注,研究环境友好型防污减阻涂料逐渐成为发展趋势。本文综述了两种防污减阻涂料的研究进展,污损释放型涂料以有机硅和有机氟为研究重点,仿生防污涂料主要研究仿生表面结构与天然活性物质等。本文阐述了现有研究的优缺点及未来研究方向,最后展望了防污减阻涂料的应用前景与发展方向。 展开更多
关键词 海洋生物污损 环境友好型涂料 污损释放型 仿生防污
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基于拉曼光谱的含铜自抛光防污涂料的性能研究
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作者 朱永强 冯孟 +4 位作者 赵亓新 王寒冰 杨玉龙 齐建涛 丛巍巍 《材料导报》 EI CAS CSCD 北大核心 2024年第9期48-52,共5页
海洋生物污损现象常常发生于涉海材料及海事设备的表面,造成了严重的经济损失及安全隐患。防污涂料可通过缓慢的毒剂释放来达到缓解海洋污损生物的目的,是极为经济高效的措施之一。其中防污剂是防污涂料功能实现的主体组分。然而,有关... 海洋生物污损现象常常发生于涉海材料及海事设备的表面,造成了严重的经济损失及安全隐患。防污涂料可通过缓慢的毒剂释放来达到缓解海洋污损生物的目的,是极为经济高效的措施之一。其中防污剂是防污涂料功能实现的主体组分。然而,有关含铜自抛光防污涂料(Cu_(2)O-SPC)中防污剂氧化亚铜(Cu_(2)O)的检测及在服役过程中的成分变化研究较少。鉴于此,本工作探究了Cu_(2)O-SPC表面特征及防污剂Cu_(2)O在服役过程中的成分变化。扫描电子显微镜(SEM)、能谱仪(EDS)结果表明,Cu_(2)O-SPC表面存在明显的颗粒相和非颗粒相,其中颗粒相存在大量的Cu、C、O元素,非颗粒相存在Cu、C、O、Fe、S、Si等元素。拉曼(Raman)光谱结果表明,选定Cu_(2)O-SPC中Cu_(2)O的追踪拉曼特征峰为409 cm^(-1),抛光磨蚀前后Cu_(2)O-SPC的特征峰值发生了变化;对Cu_(2)O-SPC部分区域进行原位分析发现Cu_(2)O特征峰强度及峰面积降低并且波动减小。这表明抛光磨蚀前后Cu_(2)O-SPC中Cu_(2)O浓度发生了变化,且对Cu_(2)O进行追踪发现,防污涂料服役过程中Cu_(2)O向外界进行了缓慢扩散,并且于防污涂料内部在浓度差的驱动下由高浓度向低浓度进行了扩散。本工作有助于明确海洋装备用防污涂料表面形貌及成分、防污剂浓度转变,为防污涂料关键化学组分追踪和量化分析提供了新的思路。 展开更多
关键词 防污涂料 防污剂 微观形貌 成分变化
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新型有机硼防污剂在自抛光防污涂料中的匹配稳定性和防污性能研究
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作者 刘术辉 张凯 +3 位作者 张华庆 王效军 丛巍巍 桂泰江 《材料导报》 EI CAS CSCD 北大核心 2024年第S01期538-543,共6页
本工作探究了一种新型有机硼防污剂——4-异丙基吡啶甲基二苯基硼烷(4-IPDMB)在防污涂料中的稳定性和防污性能。以稳定水解的丙烯酸硅树脂为自抛光基体树脂,以4-IPDMB为主防污剂,以吡啶硫酮锌、溴代吡咯腈或异噻唑啉酮等作为辅助防污剂... 本工作探究了一种新型有机硼防污剂——4-异丙基吡啶甲基二苯基硼烷(4-IPDMB)在防污涂料中的稳定性和防污性能。以稳定水解的丙烯酸硅树脂为自抛光基体树脂,以4-IPDMB为主防污剂,以吡啶硫酮锌、溴代吡咯腈或异噻唑啉酮等作为辅助防污剂,制备了多种防污涂料,并进行性能表征。首先采用一步自由基聚合法成功制备了一种具有稳定抛光速率的丙烯酸硅树脂,抛光速率测试结果表明该丙烯酸硅树脂的抛光速率为4μm/month。按配方将如上组分配制成涂料后,通过附着力试验、储存稳定性试验和浅海静态挂板试验对4-IPDMB在防污涂料中的配方匹配稳定性和防污能力进行了表征。结果表明,含有4-IPDMB的防污涂料具有良好的防污性能,当与其他辅助防污剂混合后,附着力、防污性能和储存稳定性均产生一定程度的变化,需进一步探究4-IPDMB与辅助防污剂之间的潜在化学反应,指导配方优化。 展开更多
关键词 4-异丙基吡啶甲基二苯基硼烷(4-IPDMB) 丙烯酸硅树脂 复配防污剂体系 自抛光型防污涂料
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自抛光防污涂层的水渗透特性及其对抛光速率的影响研究
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作者 张焕娟 丛巍巍 +2 位作者 张凯 苏荣国 桂泰江 《中国海洋大学学报(自然科学版)》 CAS CSCD 北大核心 2024年第2期99-105,共7页
本文采用电化学阻抗谱法(EIS)对比分析了水在两种商业化丙烯酸硅自抛光防污涂层A1和A2中的渗透行为,并通过动态模拟实验测试了两种涂层在3.5%人工海水中的抛光速率。EIS测试结果表明,水在两种丙烯酸硅自抛光防污涂层中的渗透均呈典型的F... 本文采用电化学阻抗谱法(EIS)对比分析了水在两种商业化丙烯酸硅自抛光防污涂层A1和A2中的渗透行为,并通过动态模拟实验测试了两种涂层在3.5%人工海水中的抛光速率。EIS测试结果表明,水在两种丙烯酸硅自抛光防污涂层中的渗透均呈典型的Fick扩散,进而拟合计算得到涂层A1的饱和吸水体积百分率约为11.5%,涂层A2的饱和吸水体积百分率约为20%。动态模拟实验表明防污涂层A1在人工海水中的抛光速率为0.15μm/d,涂层A2的抛光速率为0.26μm/d。饱和吸水体积百分率较大更有利于丙烯酸硅树脂水解,抛光速率更快。 展开更多
关键词 自抛光防污涂层 电化学阻抗谱 水渗透 抛光速率
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超声喷涂技术制备细胞膜涂层工艺初探
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作者 吉诚 安永琪 +3 位作者 王雅楠 蒋青 罗日方 王云兵 《表面技术》 EI CAS CSCD 北大核心 2024年第23期78-87,共10页
目的利用超声喷涂技术在宏观界面构建具有抗污、抗凝血功能的细胞膜涂层,以提高涂层制备过程的原料利用率、涂层的均匀性和稳定性。方法使用超声喷涂技术将制备的红细胞膜(EMs)逐层喷涂在基底界面,使用荧光显微镜、扫描电子显微镜、水... 目的利用超声喷涂技术在宏观界面构建具有抗污、抗凝血功能的细胞膜涂层,以提高涂层制备过程的原料利用率、涂层的均匀性和稳定性。方法使用超声喷涂技术将制备的红细胞膜(EMs)逐层喷涂在基底界面,使用荧光显微镜、扫描电子显微镜、水接触角等验证红细胞膜涂层(EMC)的组装过程、涂层稳定性的影响因素和涂层在多种材料表面的稳定涂覆。并通过蛋白吸附实验、血小板黏附和半体内血液循环实验评价涂层的抗污性能和血液相容性。结果在膜蛋白质量浓度为1 mg/mL的条件下,约30μL/cm^(2)的喷涂量,可获得厚度约500 nm的红细胞膜涂层,并且随着红细胞膜喷涂量的增加,红细胞膜涂层厚度逐渐增加至1~2μm。由于超声喷涂时涉及液滴快速蒸发和膜成分融合的过程,分散介质的盐离子浓度以及基底界面的特性将影响涂层的稳定性。超纯水体系有助于避免盐结晶行为对膜融合的阻碍。加热基底有助于加快喷涂速率,抑制不均匀的咖啡环结构。此外,富含官能团的亲水界面可以有效促进微液滴的融合和铺展,提高涂层的稳定性。优化工艺后,利用超声喷涂技术可在无机、金属和多种聚合物基材表面形成稳定的红细胞膜涂层,在基底表面形成水接触角34°的亲水性涂层。蛋白吸附实验表明,制得的红细胞膜涂层具有良好的抗污性能。血液相容性实验表明,红细胞膜涂层可有效减少血小板的黏附和激活以及材料表面血栓形成。结论超声喷涂技术可在多种材料表面形成可控、均匀和稳定的红细胞膜涂层,赋予材料表面良好的抗污、抗凝血性能。 展开更多
关键词 超声喷涂 细胞膜涂层 红细胞膜 抗污界面 血液相容性 表面改性
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SEBS/sCFO复合涂层的制备及防污性能
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作者 胡志威 郭毅 董丽杰 《表面技术》 EI CAS CSCD 北大核心 2024年第20期223-231,共9页
目的合成可抑制海洋生物吸附的磁性纳米微球,制备具有微纳结构的新型防污复合材料。方法首先采用溶剂热法和一步吸附法制备铁酸钴/苯并三唑(CFO/BTA,sCFO)磁性纳米球,将sCFO与嵌段共聚物聚(苯乙烯-乙烯-丁烯-苯乙烯)(SEBS)复合,通过喷... 目的合成可抑制海洋生物吸附的磁性纳米微球,制备具有微纳结构的新型防污复合材料。方法首先采用溶剂热法和一步吸附法制备铁酸钴/苯并三唑(CFO/BTA,sCFO)磁性纳米球,将sCFO与嵌段共聚物聚(苯乙烯-乙烯-丁烯-苯乙烯)(SEBS)复合,通过喷涂法制备SEBS/sCFO复合涂层。使用透射电子显微镜、X射线衍射仪、傅里叶变换红外光谱仪、热重分析仪等分析sCFO的微观形貌、晶体结构和化学组成等,通过扫描电子显微镜、接触角测试、蛋白吸附实验、硅藻吸附实验等分析sCFO添加量对SEBS/sCFO复合涂层的表面形貌和防污性能的影响。结果所制备的sCFO为球形结构,尺寸为60~70 nm,饱和磁化强度为44.7 emu/g,其中苯并三唑含量约为32.3%。SEBS涂层的表面因为相分离而呈现褶皱状形貌,SEBS/sCFO复合涂层的表面形貌也因磁性纳米粒子的诱导作用而发生取向,随着sCFO添加量的增加,SEBS/sCFO复合涂层的相分离结构发生变化,提高了SEBS/sCFO复合涂层的抗蛋白吸附性能和抗硅藻吸附性能。结论sCFO纳米球的添加提高了复合涂层的抗蛋白吸附性能、抗硅藻吸附性能,通过sCFO纳米球对SEBS热塑性弹性体表面结构的诱导作用,为研制具有不同微纳表面的新型防污涂层提供了新方法,在海洋防污领域具有潜在的应用前景。 展开更多
关键词 铁酸钴 苯并三唑 聚(苯乙烯-乙烯-丁烯-苯乙烯) 嵌段共聚物 喷涂法 抗生物淤积
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