氨基硅油改性丙烯酸树脂防污涂料的制备与性能

环境友好型有机硅改性丙烯酸树脂的合成及其用于海洋防污涂料的性能研究很有意义。以氨基硅油为原料,通过开环加成改性甲基丙烯酸缩水甘油酯(GMA),再与其他丙烯酸单体自由基聚合制备出氨基硅油改性丙烯酸树脂,借助FT-IR对其结构进行了表征,并以改性丙烯酸树脂为防污涂料成膜物制备了兼具自抛光特性/低表面能特性的防污涂料,考察了氨基硅油用量对涂料涂膜的附着力、柔韧性、接触角和表面能等的影响。结果表明:当氨基硅油用量为1%时,涂膜综合性能达到最佳,附着力、柔韧性达到一级,抗冲击强度≥50 kg·cm,硬度达到2 H,接触角为99.6°,表面能为23.3 m N/m;结合实海挂板试验显示,改性的防污涂料具有良好的防污性能。     

不同氟含量的苯丙树脂及防污涂料的性能研究

采用具有低表面能特性的有机氟单体对苯丙树脂进行改性合成,探讨了氟单体用量及软硬单体比例对树脂性能的影响,用接触角检测仪对涂膜表面与水的接触角进行了测量,并对涂膜的附着力、冲击强度等各项常规性能进行了综合检测,同时进行了实海挂板试验。结果表明,当氟单体含量为17.3%、软硬单体比值为0.46时,树脂性能较好,对应的防污涂料防污性能也最佳。此时涂料涂膜与水的接触角是145.5°,附着力等级1级,在50cm垂直高度下重锤冲击无裂纹。     

可UV固化的辣椒碱型杂萘联苯环氧丙烯酸酯防污涂料

合成含杂萘联苯结构的环氧甲基丙烯酸酯(EMA),并以其作为基体树脂,配制UV固化涂料,确定较优的配方.选用三羟甲基丙烷三丙烯酸酯(TMPTA)和1,6-己二醇二丙烯酸酯(HDDA)为稀释剂,引发剂1173的含量为3%,得到的紫外光(UV)固化涂层光泽度高,铅笔硬度为6H;附着力为1级.在此配方下加入合成辣椒碱作为防污涂料的防污剂,制备环境友好型防污涂料,并对涂膜性能及防污性能进行考察研究.添加10%辣椒碱防污剂时涂膜具有高的凝胶含量,优良耐化学性能和防污性能.     

无毒网箱防污涂料的制备及性能研究

以松香为成膜物,通过添加可塑剂和防污剂壬酸香草酰胺,制成了网箱防污涂料,讨论了可塑剂的选择和防污剂用量对涂膜防污效果的影响,检测了涂膜的急性毒性.防污效果海上对比试验结果表明,选用邻苯二甲酸二辛酯和氯化石蜡复合可塑剂(邻苯二甲酸二辛酯∶氯化石蜡=1 ∶ 1),防污剂用量为5％时,3个月后海上挂样网片增重量仅为3％,涂料...     

舰船高性能防腐蚀防污涂料研究进展

简要论述了海洋防腐蚀防污涂料的发展历史和研究现状,重点论述了舰船高性能防腐蚀防污涂料的最新研究进展。有机锡自抛光防污涂料被禁止使用之后,基于丙烯酸锌、丙烯酸铜和丙烯酸硅烷酯的自抛光防污涂料得到了广泛应用。基于含防污功能基团树脂的防污涂料、基于降解树脂的防污涂料以及基于表面结构特性的防污涂料技术成为当前防污涂料研究的热点。文中详细报道了降解树脂的结构对降解性能及力学性能影响规律,以及表面结构特性对污损释放型防污涂料防污性能的影响规律。随着环境保护法规的日趋严格,防腐蚀涂料向无溶剂(或高固体)、长效方向发展。报道了提高涂层的湿态附着力和致密性的方法,采用该方法可以大幅提高涂层的力学性能和耐蚀性能,满足了远洋和深海装备发展需求。     

无毒型低表面能海洋防污涂料的研制

为研制符合环保要求的无毒防污涂料,通过氟碳树脂与丙烯酸树脂的物理共混改性,探讨了两种树脂的最佳配比参数;同时通过更改颜料体积浓度(PVC)参数进行试验对比,分析了涂料中颜填料不同组分的变动对涂膜表面能及耐腐蚀等性能的影响,并最终确定涂料配方,制备出了无毒型低表面能海洋防污涂料.     

低表面能防污涂料的最新进展

本文从理论上分析了低表面能防污涂料 (主要为氟碳树脂防污涂料及有机硅弹性体防污涂料 )防污性能的影响因素 ,并综述了低表面能防污涂料的设计准则及最新进展     

天然防污剂间苯三酚在低表面能海洋涂料中的应用

以合成的乙烯基吡啶改性丙烯酸树脂为主要成膜物质,在颜填料不变的基础上,加入天然防污剂间苯三酚,制成了含天然防污剂间苯三酚的低表面能无毒海洋防污涂料。讨论了间苯三酚加入后对涂膜基本性能的影响,分析了其抑菌防污特性。结果表明,间苯三酚加入后,低表面能涂料的基本性能保持良好:其抗冲击强度大于50kg/cm2,附着力为1级,漆膜与水的接触角为130°,但是其抑菌特性明显增强,抑制大肠杆菌环最小直径达到21mm。     

丙烯酸锌自抛光防污涂料的配套性及防污性能研究

以自制的丙烯酸锌树脂为基料制备自抛光型防污涂料,研究了该自抛光防污漆与配套连接漆的附着特性,同时对该防污涂料的自抛光性能及防污性能进行了研究。结果表明,该防污涂料与配套连接漆的层间附着力大于2 MPa,且以防污漆内聚断裂为主,表明涂层具有较好的配套附着性;防污涂料的自抛光速率稳定,基本保持在65μm/a;经过3年浅海挂板试验后,漆膜表面无任何海洋污损生物附着,防污性能良好。     

SiO2改性低表面能纳米结构无毒海洋防污涂料

以合成的有机硅改性丙烯酸树脂为主要成膜物质,在颜填料不变的基础上添加纳米SiO2,制成了低表面能纳米结构无毒海洋防污涂料,讨论了树脂用量和纳米SiO2对涂膜附着力及其与液体接触角的影响,分析了低表面能防污涂料的表面结构.结果表明,树脂用量为25%～30%时,涂膜的附着力为1级,涂膜与水的接触角为150°,涂膜表面为纳米-微米阶层状结构.     

纳米SiO2/环氧复合钢板涂层材料机械及耐腐蚀性能

研究了纳米SiO₂添加量对环氧复合钢板涂层硬度、 T弯和应变等机械性能的影响, 并通过盐雾试验和电化学交流阻抗技术对涂层的耐腐蚀性能进行了测试。研究表明, 纳米SiO₂添加量为2.0%时, 涂层性能有较大的提高, 铅笔硬度从H提高到2H, T弯从4T改善到2T, 涂层的耐盐雾时间也由720h增加到1030h, 提高了40％以上。从电化学交流阻抗谱图得出, 添加量为2.0%的纳米SiO₂复合涂层的阻抗值最大, 高于未添加纳米SiO₂涂层的阻抗值近2个数量级。另外, 涂层的SEM照片显示, 纳米SiO₂添加量为2.0%时, 颗粒较均匀地分散, 黏接紧密, 形成较为致密的复合涂层。      

Improvement of minimum paint film thickness for THz paint meters by multiple-regression analysis

We propose a numerical parameter fitting method to determine the time delay between two temporally overlapped echo pulses in terahertz (THz) tomography measurements. The method is based on multiple-regression analysis with the least-squares method and is applied to decrease the minimum paint film thickness for THz paint meters. Applying multiple-regression analysis to paint thickness measurements is five times more sensitive with regard to the minimum thickness than numerical Fourier deconvolution. We apply the proposed method to determine the optical thickness, geometrical thickness, and group refractive index of dry paint film and wet paint film. The proposed method is useful for decreasing the minimum thickness for a THz paint meter and other THz tomography measurements.     

埕岛海上油田钢结构的腐蚀与防护

对胜利油田海滩及近海区的海上石油开采平台钢结构的腐蚀与防护,根据不同钢结构及部件所处的海洋大气区、潮差区、 飞溅区、全浸区和海泥区的不同腐蚀特点,选择了多种类型的涂装体系进行实验和实际应用。经过5年的暴露及服役考核,表明环氧富锌底漆结合HS厚浆型环氧聚氨酯涂漆涂体系,具有优异的综合性能。海底输油管线以环氧富锌底漆配以玻璃布增强厚浆型环氧煤沥青漆的涂装体系应用效果最佳。使用牺牲阳极块辅助保护,有助于延长使用寿命。指出了应用中尚存在的问题。     

涂料盐雾试样的勘误方法研究

在盐雾试验的基础上,对涂料试样提出了2种拓展考察的方法:残余附着力测试和划"×"处金属腐蚀状态勘验。在高氯化底漆+高氯化面漆、环氧底漆+高氯化面漆、环氧底漆+工程面漆和高氯化底漆+工程面漆等不同的涂料体系,通过试验得出了高氯化涂料具有突出的封闭阻挡性能,但涂层发脆。工程面漆与底漆粘附力较差,环氧底漆具有突出的基体附着力,与高氯化面漆配合,是性能优良的防腐涂料体系。     

多层复合型电磁屏蔽涂料的研究

涂层结构及厚度直接影响所制备涂料的屏蔽效能。本文使用不同材料作为填料制备涂料后,同改性镍涂料进行层状复合,对获得涂层的电磁屏蔽性能进行了研究。实验证明复合方法可以提高涂料的电磁屏蔽效能。     

FUNDAMENTAL STUDY OF PAINT SYSTEMS FOR MOBILE PHONES

The diversity of paint arises from the properties required of a coating. All ideal properties cannot be met in a single product because the paints are are constrained by the nature of the substrate on which the paint is used. The choice of polymer determines the paint film properties and as such, is the most important factor in the formulation of a paint. In this investigation, poly(vinylchloride) (PVC) copolymer with other principal monomers such as acrylic and polyurethane were studied. In addition to mechanical properties, abrading, adhesion, and scratch resistance were studied. Special attention was focused on the chemical resistance to ethanol and artificial perspiration. PVC copolymerization with acrylic or polyurethane was found to significantly enhance the chemical resistance of the basic binder system. In the free-radical polymerization process of PVC, it improved the physical properties of the paint system in terms of its permeability to acid. This prevents corrosion of aluminum flakes in the metallic paint used for mobile phones.     

Hydrogel Paint

For a hydrogel coating on a substrate to be stable, covalent bonds polymerize monomer units into polymer chains, crosslink the polymer chains into a polymer network, and interlink the polymer network to the substrate. The three processes—polymerization, crosslinking, and interlinking—usually concur. This concurrency hinders widespread applications of hydrogel coatings. Here a principle is described to create hydrogel paints that decouple polymerization from crosslinking and interlinking. Like a common paint, a hydrogel paint divides the labor between the paint maker and the paint user. The paint maker formulates the hydrogel paint by copolymerizing monomer units and coupling agents into polymer chains, but does not crosslink them. The paint user applies the paint on various materials (elastomer, plastic, glass, ceramic, or metal), and by various operations (brush, cast, dip, spin, or spray). During cure, the coupling agents crosslink the polymer chains into a network and interlink the polymer network to the substrate. As an example, hydrogels with thickness in the range of 2–20 µm are dip coated on medical nitinol wires. The coated wires reduce friction by eightfold, and remain stable over 50 test cycles. Also demonstrated are several proof‐of‐concept applications, including stimuli‐responsive structures and antifouling model boats.     

Evaluation of two lead-based paint removal and waste stabilization technology combinations on typical exterior surfaces

A study was conducted to demonstrate the effectiveness of a wet abrasive blasting technology to remove lead-based paint from exterior wood siding and brick substrates as well as to evaluate the effectiveness of two waste stabilization technologies to stabilize the resulting blast media (coal slag and mineral sand) paint debris thereby reducing the leachable lead content. The lead-based paint removal technology effectiveness was determined by the use of an X-ray fluorescence (XRF) spectrum analyzer (L- and K-shell). The effectiveness of the technologies to stabilize the debris was evaluated through the toxicity characteristic leaching procedure (TCLP). Wet abrasive blasting effectively removed the lead-based paint coating from both the wood and brick substrates to below the US Department of Housing and Urban Development Guideline (1mg/cm(2)) with no minimal or no damage to the underlying substrates (P<0.0001). The mean area air levels of lead-containing particulate generated during paint removal were significantly below the personal exposure limit (PEL) (P<0.0001). However, the mean personal breathing zone lead levels were approximately three times higher than the PEL. Neither of the two stabilization technologies consistently stabilized the resultant paint debris to achieve a leachable lead content below the RCRA regulatory threshold of <5 mg/l.     

脉冲软X射线辐射下复合材料的辐射特性实验研究

采用自行研制的微型红外通光测试系统,对三种复合材料和硬铝在脉冲软X射线辐射下的喷射冲量进行了实验测量研究.结果表明:涂层B较涂层A、玻璃钢和硬铝具有更好的抗脉冲辐射性能;在实验能注量范围内涂层B的烧蚀率只是涂层A的十分之一,是硬铝的三分之一.可以断定,涂层B是空间飞行器的最好防护层材料之一.     

带水带锈涂料的研制

针对带水带锈涂料广阔的应用前景,以改性环氧树脂、沥青、铁锈转化剂、配位体、防锈剂、溶剂等为主要原料研制成功了一种转化型带水带锈涂料,优化的工艺配方(质量分数)为:18%环氧树脂,6%沥青清漆,10%溶剂[V(丁醇):V(二甲苯)=1:1],35%铁锈转化剂[V(磷酸):V(鞣酸)=3～4:1],2%柠檬酸,1%磷酸二氢钠,1%钼酸钠,1%OP-10,2%炭黑,24%乙醇,0.5%乙二醇.探讨了主要成分对铁锈转化能力及涂膜质量的影响,检测了涂料和涂膜性能.结果表明:该涂料铁锈转化能力强,能带水带锈施工,各项性能良好,适用于钢铁件的防腐蚀处理.