低表面能含氟硅防冰涂料的制备及应用

概述了涂料防冰的原理,重点论述了低表面能涂料在输电线上的应用,并介绍了新研发的氟硅防冰涂料FB-01的制备及性能.检测结果表明,由甲基丙烯酸酯类单体、乙烯基三乙氧基硅烷、含氟甲基丙烯酸酯类单体等原料制得的含氟硅清漆,可有效降低冰和衬底表面的附着力,具有一定防冰效果.     

防覆冰涂料的研究及进展

输电线路防覆冰涂料具有低表面能、强憎水性、高传热吸光性和良好的耐候性等特点,且涂层尽量多层化、梯度化。概述了输电线路领域国内外防覆冰涂料的研究现状和进展,给出了制备防覆冰涂料的技术思路和方法,提出在我国开展防覆冰涂料研究开发的必要性、研究要求和方向。     

憎水性涂料对风机叶片结冰影响研究

通过风洞实验探索憎水性涂料分别在不同空气温度、相对湿度及冰冻时间的因素下对风机叶片覆冰过程的影响。实验结果表明:憎水性涂料并不能完全防止叶片结冰,但具有一定的防冰效果。空气温度为-6~-8℃时,憎水性涂料的防冰性能最差。温度一定时,憎水性涂料的防冰性能随相对湿度呈单调递减关系。当表面冰层达到一定厚度时,憎水涂料将失去防冰性能。憎水性涂料在一定范围的温度和湿度条件下才能发挥出良好的防冰性能。     

产品开发

<正>开发防覆冰超疏水涂料前景佳冰给交通运输、电力、建筑及工业、农业等带来许多灾难,防覆冰技术研究具有很重要的意义。防覆冰超疏水涂料可缩短水滴在涂料表面的停留时间,使水滴在结冰前从材料表面滑落,达到防覆冰的目的,可广泛应用于高压电缆、铁塔、通信线路、风力发电的浆叶、飞机和船舶等许多领域,具有广阔的应用前景,开发前景佳。     

飞机防冰涂料应用研究进展

介绍了飞机遭遇结冰云雾引发的安全风险,提出防冰涂层是解决飞机防冰问题的有效方法.基于防冰涂层理论模型,面向应用,分别综述了国内外防冰涂料产品和技术发展现状,分析了目前国内防冰涂料与国外的差距.     

产品开发

发展防冰融冰功能涂料前景好 防冰除冰方法是雨雪冰冻等极端自然灾害环境中保证交通、电力、通讯等设施正常运转的重要措施。功能涂料防冰融冰是防冰除冰方法之一。防冰融冰功能型涂料主要有4种：超疏水型防覆冰涂料、融冰型防覆冰涂料,电热型除冰涂料和光热型除冰涂料。其中超疏水型防覆冰涂料在防冰应用上展现了良好的应用前景,兼具导电发热或光照发热或者通过释放出的物质降低冰点等作用起到融冰效果的超疏水防冰融冰涂料则最具发展前景,是此类涂料的发展方向。     

高寒列车转向架防冰涂料的研究

在高寒地区运行的列车转向架部位容易发生结冰现象,这在一定程度上对行车安全造成隐患。对于平滑表面而言,表面的接触角滞后与冰粘附强度呈现线性关系,即接触角滞后越小,冰粘附强度越低。基于这一基础理论,本文意在构建低滞后的光滑涂层,实现涂层的低冰粘附强度,从而达到易除冰的效果。研究选用 HDI三聚体型多异氰酸酯为固化剂,对比了 3种商品化具有低表面能特性的含氟羟基树脂应用于双组分防冰涂料的性能差异,并采用疏水性最强、防冰性能最优的氟硅树脂制备了综合性能优异的高寒列车转向架防冰涂料。     

防覆冰超疏水涂料的研究与进展

介绍了常用的防覆冰技术(涂撒防结冰剂、机械除冰、热力除冰、自然被动除冰和其他除冰技术),综述了防覆冰原理、超疏水表面和防覆冰超疏水性涂层(纳米复合材料等超疏水涂料)的研究进展。最后对防覆冰超疏水性涂层的制备进行了概括,并对其应用前景进行了展望。     

超低表面能防冰涂料通过鉴定

由海洋化工研究院自主设计的一种超低表面能防冰涂料日前通过鉴定。目前，该涂料已进入应用试验阶段。     

输电线路防覆冰涂料

用改性的石硅溶胶-苯丙乳液却基料，吸光性能良好的FeMnCuOx为颜料，制备疏水防冰涂料。对所制备的涂料进行了性能检测和应用实验，结果表叫：该涂料具有一定防粒冰性能，在-20—0℃和较高相对湿度的实验室条件下具有减缓铝线表面结冰的作用，同时该涂料还具有较好的结合力和耐候性。     

抗结冰涂料在轨道车辆上的应用研究

高速动车组在北方冬季运行时，车下重要组成部分转向架容易在风雪天气下发生覆冰，对制动效果和信号传输均带来不利影响，威胁车辆运行的安全和平稳性。抗结冰涂料可以通过降低材料表面能实现抗结冰功能，本文通过设计性能实验综合分析比较了当前市面存在的几种不同品牌的抗结冰涂料的疏水性、着冰力等性能，之后结合工艺配套性等因素选用其中性能优异的某种涂料做实车性能测试。综合测试结果表明抗结冰涂料的使用可有效降低冰对涂层的附着力，更有利于冰层的融化和脱落。最后，综合实验结果探讨了这类涂料在轨道车辆上的应用前景。     

Design and preparation of durable anti-icing polysilazane coatings with abrasion and UV resistance

This work developed a method to enhance the durability of anti-icing performance of a coating to endure abrasion and UV exposure, through grafting functional polydimethylsiloxane (PDMS) to TiO₂ particles and further reacting with polysilazane (PSZ) pre-polymer. This method remarkably improved the anti-icing properties of PSZ-based coatings evaluated by freezing delay time and ice removal shear strength. After either surface abrasion for 50 cycles or UV exposure for 100 h, the modified coatings exhibited ice shear strength increase by only 10.44 and 6.44 kPa respectively, significantly lower comparing to that of the coatings containing 30% TiO₂ with no PDMS modification (29.69 and 11.88 kPa, respectively). Such strengthened durability of anti-icing performance is attributed to the PDMS molecules bridging PSZ rigid segments and TiO₂ compositions, which formed a hydrophobic cross-linking network structure. The durable anti-icing technique developed herein shall appeal to many outdoor applications of facilities and infrastructures.     

防覆冰涂料在输电线路上的应用

输电线路覆冰灾害及其预防现已成为一个迫切需要解决的问题。对比了几种防冰涂料在输电线上的应用,分别测试其接触角、涂层表面张力、户外覆冰量等并考察了其在户外的实际应用效果。     

Long-term hydrophobicity and ice adhesion strength of latex paints containing silicone oil microcapsules

Waterborne anti-icing coatings were prepared by embedding silicone oil microcapsules in latex paints. The long-term hydrophobicity and ice adhesion strength of the coatings were examined with a QUV accelerated weathering tester and a pull-off adhesion tester. The effects of silicone oil content and pigment/binder (PB) ratio on the long-term hydrophobicity and the ice adhesion strength of the coatings were investigated. A higher silicone oil content and a PB ratio close to the critical pigment volume concentration favor long-term hydrophobicity of the coatings. An obvious decrease in ice adhesion strength was achieved for coatings with a PB ratio of 5.0 and a silicone oil content of 4.2%. For coatings with the same surface roughness, a higher water contact angle (WCA) led to lower ice adhesion strength. However, for coatings with different surface roughnesses, the ice adhesion strength was found to be dependent on surface roughness rather than on WCA.     

低表面能涂层在飞机防除冰领域的研究进展与应用

阐述了飞机防除冰的重要性及通常采用的防除冰方法,简要介绍了疏水型低表面能涂层在飞机防除冰领域的辅助作用及该类涂层的疏水机理和分类,评述了几类含氟低表面能树脂在疏水涂料领域的研究进展以及该类涂层在飞机蒙皮和防除冰领域的应用。     

Anti-Icing gradient organosilicate coatings

The factors characterizing the adhesion of water to the coating surface are analyzed. The compatibility of polymer components and its influence on the characteristics determining the anti-icing properties of coatings are considered. It is demonstrated that the use of the complementing results obtained by physicochemical methods of investigations and operational, accelerated, and natural tests makes it possible to properly choose and optimize the coating compositions.     

输电线路防覆冰涂料的研究进展

简述了线路覆冰雪造成的危害,综述了目前国内外线路防覆冰涂料的类型和研究现状,提出了梯度结构的憎水性吸热涂料是未来输电线路防覆冰涂料的发展趋势.