共查询到18条相似文献,搜索用时 31 毫秒
1.
以聚醚多元醇MN-3050D、聚醚多元醇DL-2000D、聚己内酯二醇PCL-2000和聚碳酸酯二元醇PCDL-2000为软段,分别与二苯基甲烷二异氰酸酯(MDI-50)制备聚氨酯防冰涂料的A组分,以市售含氟树脂为聚氨酯防冰涂料的B组分,研究了软段组成对聚氨酯防冰涂料力学性能、吸水率、接触角、冰粘附强度的影响,并优选性能最佳的涂层评价其综合性能。结果表明:所制备的聚氨酯防冰涂料吸水率小于1%,接触角大于90°;相对于以MN-3050D和DL-2000D为软段的聚氨酯防冰涂料,以PCL-2000和PCDL-2000为软段的聚氨酯防冰涂料具有更优的力学性能和耐水性能,但冰粘附强度也更高;随着涂层厚度的增加,防冰涂料的冰粘附强度均逐渐减小。优选以PCL-2000为软段的聚氨酯防冰涂料评价其综合性能,结果显示其与混凝土的粘结强度为2.68 MPa,同时具有良好的耐老化性能和柔韧性。 相似文献
2.
本文利用含氟丙烯酸酯单体和含硅丙烯酸单体,对成膜性很好的丙烯酸酯树脂进行改性,从而在聚合物分子中引入有机硅链段和有机氟链段,降低涂膜的表面能,合成一种表面能低、憎水性强、耐久耐候性好的氟硅改性丙烯酸酯树脂防冰涂料。 相似文献
3.
4.
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. 相似文献
5.
通过对聚氨酯防冰涂料制备的研究,讨论了其微观润湿结构、疏水性能、润滑性能、力学性能及可再生性能等,所得聚氨酯防冰涂料具有一定的防冰效果,可作为架空线除冰的研究方向之一. 相似文献
6.
7.
8.
9.
周如东;刘德军;李鹏;陆文明;李文凯;移易;黄磊 《涂料工业》2024,(5):84-88
介绍了防覆冰材料表面的防覆冰机理,并对国内外亲水型、疏水型和弹性3大类防覆冰涂料的研究现状和优缺点进行了阐述,对涂层表面疏水性和防覆冰性的表征方法与手段进行了总结和介绍。最后,指出弹性疏水涂料将是未来防覆冰涂料领域的研究重点,另外在防覆冰涂料产品的推广应用、系统评价以及通用标准的建立方面,国内仍需要进一步优化与完善。 相似文献
10.
11.
12.
13.
Ambient‐cured polyesteramide (APEA) coating resin synthesized from dihydroxy fatty amide obtained from linseed oil, a sustainable resource, and poly(styrene‐co‐maleic anhydride), a bifunctional acid component, was found to exhibit improved physicomechanical and anticorrosive properties. The structural elucidation of APEA resin has been carried out by FTIR, 1H‐NMR, and 13C‐NMR spectroscopies. The physicomechanical and chemical resistance properties were investigated by standard methods. The corrosion resistance performance was evaluated in acid, alkali, and organic solvent. The thermal behavior was studied by TGA technique. A comparative study of these properties of APEA with reported baked polyesteramide (PEA) coatings was carried out. A remarkable improvement in the drying property of APEA was observed. The APEA coatings also showed improved physicomechanical and anticorrosive properties as compared to the baked PEA coatings. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1818–1824, 2005 相似文献
14.
《Journal of Adhesion Science and Technology》2013,27(12):1563-1575
One of the causes leading to low bond strength between a coating and a substrate (adhesion strength) - if coatings are formed at elevated temperatures in air - is assumed to be a weak boundary layer generated in the region of adhesional contact: the boundary layer consisting mostly of low-molecular-weight products resulting from thermal oxidative degradation of the polymer. It has been verified experimentally that products of oxidation diffuse from the coating surface layer to the contact area. The oxidation process is supposed to be localized within that surface layer. A method has been devised to determine the thickness of the layer, and model experiments have been conducted to show that low-molecular-weight products of oxidation deteriorate the adhesion strength. Ways have been found to increase the adhesion strength of coatings by means of modification of the coating applied in a layer-by-layer manner. The idea is to introduce separately such modifiers as antioxidants, inorganic fillers possessing high adsorption capacities, and crosslinking agents into the coating surface layer. This method of coating modification allows one to eliminate the negative effects of the low-molecular-weight products generated in the surface layers during the formation. 相似文献
15.
16.
17.
在固体材料表面黏附成膜是微藻细胞的一种生理特性。近些年基于微藻生物膜的生物过程,如生物膜贴壁培养和防附着技术受到了很多关注。微藻在固体材料表面的黏附受藻细胞与材料表面之间的相互作用的影响,建立黏附强度与材料表面性质参数间的关系对于通过材料选择来强化或控制微藻生物膜具有非常重要的意义。本工作的目的是揭示和明确材料亲疏水性对微藻黏附的影响,提出了一种双酚A环氧(EP)树脂表面亲疏水改性的方法。通过将亲水性的二乙醇胺(DEA)或疏水性的聚甲基聚硅氧烷(PMHS)加入到EP树脂中反应,EP树脂表面水接触角在36.80?~98.34?范围内可通过加入不同量的DEA或PMHS实现任意可调,材料的表面水接触角与DEA或PMHS加入量之间有线性关系。重要的是这种改性方法获得的材料,其形貌、结构、表面粗糙度等表面性质几乎没有变化,从而在研究和关联微藻黏附量与材料表面亲疏水性(表面水接触角)之间的关系时可以排除亲疏水性之外的其他表面性质的影响;其次,考察了小球藻和栅藻在不同亲疏水性材料表面的黏附行为,结果表明小球藻和栅藻在亲水性和疏水性材料表面均能黏附成膜,但在亲水性材料表面黏附更多更快;建立了微藻最大黏附容量与材料表面接触角之间关联关系,表明微藻最大黏附容量随材料表面水接触角的增大而线性降低,栅藻的表面黏附容量比小球藻大。 相似文献