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基于环氧多面体低聚倍半硅氧烷（EP-POSS）及其衍生物的紫外光固化坚固耐用疏水涂层

UV Curable Robust Durable Hydrophobic Coating Based on Epoxy Polyhedral Oligomeric Silsesquioxanes (EP-POSS) and Their Derivatives.

作者信息

Zhang Peng, Qin Ban, Xia Jianhui

机构信息

South China Advanced Institute for Soft Matter Science and Technology (AISMST), School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, People's Republic of China.

Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, People's Republic of China.

出版信息

ACS Omega. 2022 May 13;7(20):17108-17118. doi: 10.1021/acsomega.2c00534. eCollection 2022 May 24.

DOI:10.1021/acsomega.2c00534
PMID:35647429
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9134229/
Abstract

Hydrophobic coatings have considerable potential applications in many fields. Ease of operation and high durability are essential for practical use. Fast curing and being solvent-free are a plus, and if they possess certain characteristics (antigraffiti, good adhesion, high hardness, heat resistance, wide range of applicability, etc.) at the same time, it is a dream solution. Herein, a facile one-step approach with the above features was reported for a UV curable robust hydrophobic coating based on Epoxy Polyhedral Oligomeric Silsesquioxanes (EP-POSSs). The structure and surface morphology of these EP-POSSs and their derivatives were systematically studied. Because of the core-in-cage structure which was constructed by repeating units of R-Si(O) and the strong covalent bonds of Si-C and Si-O, the coatings displayed high pencil hardness (6-8H), high thermal stability with initial decomposition temperature around 350-400 °C, and a high water contact angle (up to 108.06°) even after outdoor exposure for a month. These POSSs and their derivatives are expected to find uses in various applications such as stain resistance, self-cleaning, scratch resistance, and cigarette moxibustion resistance of wood furniture, kitchenware, and medical and industrial appliances.

摘要

疏水涂层在许多领域具有相当大的潜在应用价值。操作简便和高耐久性对于实际应用至关重要。快速固化且无溶剂是其优点，若同时具备某些特性（抗涂鸦、良好附着力、高硬度、耐热性、广泛适用性等），则是理想的解决方案。在此，报道了一种基于环氧多面体低聚倍半硅氧烷（EP-POSSs）的具有上述特点的简便一步法制备紫外光固化坚固疏水涂层的方法。对这些EP-POSSs及其衍生物的结构和表面形态进行了系统研究。由于由R-Si(O)重复单元构建的笼中核心结构以及Si-C和Si-O的强共价键，涂层显示出高铅笔硬度（6-8H）、初始分解温度约为350-400°C的高热稳定性，甚至在户外暴露一个月后仍具有高达108.06°的高水接触角。这些POSSs及其衍生物有望用于各种应用，如木材家具、厨具以及医疗和工业器具的防污、自清洁、抗划伤和抗艾灸。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c78/9134229/40a36838f898/ao2c00534_0012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c78/9134229/40a36838f898/ao2c00534_0012.jpg

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