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首页> 外文期刊>Journal of Applied Polymer Science >Polymers dynamics of the nonfluoro, nano-brush repelling agent with self-stratifying property in water-based coatings
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Polymers dynamics of the nonfluoro, nano-brush repelling agent with self-stratifying property in water-based coatings

机译：非氟酚，纳米刷排斥试剂具有自分层性能的聚合物动力学，水基涂料

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摘要

While perfluoroalkyl acids (PFAAs), also known as C8s, are used extensively in textile repellent coatings, concerns have arisen for their carcinogenicity and hazardous effects on the environment. In this study, a novel water-based, nonfluoro, and nanobrush textile repelling agent was prepared by conventional sol-gel chemistry using amorphous fumed silica and n-octyltriethoxysilane as the starting materials. Minimal interaction between the designed repelling agent and marketed water-based resins was confirmed using linear viscosity region (LVR) analysis and asymmetric-flow field-flow fractionation (AF4), suggesting the self-stratification potential of the repelling agent. More specifically, the repelling agent exhibited excellent compatibility and self-stratifying ability with a force-emulsified acrylic-based resin, affording a water contact angle of 104.3 degrees when incorporated at 7% solid content. Performance tests carried out on thermoplastic polyurethane (TPU) revealed excellent adhesion (100/100) of a final formulation, and a significant increase in water contact angle from 80.1 degrees to 103.8 degrees after treatment. In addition, the fouling area after the removal of a submerged sample from a mixture of slurry, polymer, and oil decreased from 48 to 1% when the repelling agent was added. Moreover, the sludge-fouling property remained unchanged after 1000 cycles of abrasion. These findings demonstrate the potential of the described nonfluoro, nanobrush repelling agent as an environmentally safe alternative for use with commercial resins, in turn realizing a fully water-based hydrophobic coating. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48003.
机译：而全氟烷基酸（PFAAs），也称为C8s，在纺织品涂料中广泛使用，因此对其致癌性和对环境的危险作用产生了疑虑。在该研究中，通过使用无定形的溶解二氧化硅和正辛基三乙氧基硅烷作为起始材料，通过常规溶胶 - 凝胶化学制备新的水基，非氟和纳米水纺织品排斥剂。使用线性粘度区域（LVR）分析和不对称流场 - 流量分级（AF4）确认设计排斥剂和销售水基树脂之间的最小相互作用，表明排斥剂的自分层电位。更具体地，排斥剂表现出具有力乳化丙烯酸类树脂的优异的相容性和自分层能力，当加入7％固体含量时，水接触角度为104.3度。在热塑性聚氨酯（TPU）上进行的性能试验显示出最终配方的优异粘附（100/100），并在处理后从80.1度到103.8度的水接触角显着增加。此外，在加入排斥剂时从浆料，聚合物和油的混合物中除去浸没式样品后的污垢区域从48℃下降到1％。此外，在1000次磨损后，污泥污泥性能保持不变。这些发现证明了所描述的非流量，纳米水浸剂剂作为与商业树脂一起使用的环保替代物的潜力，反过来实现了完全水基疏水涂层。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,48003。

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