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受贻贝启发的通用界面改性方法及其在聚合物增强和作为阻燃剂方面的应用。

Mussel-Inspired General Interface Modification Method and Its Application in Polymer Reinforcement and as a Flame Retardant.

作者信息

Wang Hao, Zhou Xuan, Abro Masroor, Gao Ming, Deng Meigui, Qin Zhi, Sun Yingjuan, Yue Lina, Zhang Xiaoqian

机构信息

College of Environmental Engineering, North China Institute of Science and Technology, Beijing 101601, P. R. China.

College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China.

出版信息

ACS Omega. 2018 May 4;3(5):4891-4898. doi: 10.1021/acsomega.8b00182. eCollection 2018 May 31.

DOI:10.1021/acsomega.8b00182
PMID:31458705
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6641865/
Abstract

Inspired by the remarkable adhesion of mussels, the mimicking of natural adhesive molecules has been widely used for surface modification. In the present study, an economical and easily available biomimic material named as tannic acid-Fe (TA-Fe) was first directly used as a surface modifier, carbonization agent, smoke inhibitor, and flame-retardant synergist. Compared with the flame-retardant magnesium hydroxide (Mg(OH)), TA-Fe-modified Mg(OH) endowed polyamide 6 (PA 6) with improved mechanical performance and flame-retardant properties. The flame-retardant and smoke-suppressant properties were tested by the limiting oxygen index and cone calorimeter tests. The flame-retardation mechanism was investigated by thermogravimetric analysis, scanning electron microscopy, and X-ray photoelectron spectroscopy. The tensile strength could increase up to 90%, and the modified flame retardant was found to have higher UL-94 grade with the same dosage of flame-retardant additives. The peak heat release rate, total heat release, peak of smoke production rate, and total smoke production were significantly reduced. The synergistic effect between TA-Fe and Mg(OH) was also discussed. This study provides new insights into the direct utilization of a biomimicking adhesive molecule, TA-Fe, to realize simultaneous composite reinforcement and flame-retardant property enhancement. Meanwhile, because of the extensive synergies of flame-retardant metal oxide with iron element and the universal growth characteristics of TA-Fe, it has potential applications in the preparation of various flame-retardant polymers.

摘要

受贻贝卓越附着力的启发，对天然粘附分子的模仿已广泛用于表面改性。在本研究中，一种经济且易于获得的仿生材料——单宁酸 - 铁（TA - Fe）首次被直接用作表面改性剂、碳化剂、抑烟剂和阻燃增效剂。与阻燃氢氧化镁（Mg(OH)）相比，TA - Fe改性的Mg(OH)赋予聚酰胺6（PA 6）更好的机械性能和阻燃性能。通过极限氧指数和锥形量热仪测试对阻燃和抑烟性能进行了测试。通过热重分析、扫描电子显微镜和X射线光电子能谱研究了阻燃机理。拉伸强度可提高至90%，并且发现相同用量的阻燃添加剂下，改性阻燃剂具有更高的UL - 94等级。峰值热释放速率、总热释放量、产烟速率峰值和总产烟量均显著降低。还讨论了TA - Fe与Mg(OH)之间的协同效应。本研究为直接利用仿生粘附分子TA - Fe实现同时增强复合材料和提高阻燃性能提供了新的见解。同时，由于阻燃金属氧化物与铁元素的广泛协同作用以及TA - Fe的普遍生长特性，它在各种阻燃聚合物的制备中具有潜在应用。

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