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硼酸锌、纳米二氧化硅和固化剂对环氧纳米复合材料及涂层的力学性能和热行为特性

Characteristics of Mechanical Properties and Thermal Behavior of Epoxy Nanocomposites and Coatings by Zinc Borate, Nano Silica, and Hardener.

作者信息

Huy Cuong Huynh Le, Thanh An Truong

机构信息

Faculty of Chemical Engineering, Ho Chi Minh City University of Food Industry (HUFI), Ho Chi Minh City 756100, Vietnam.

Center for Experimental Practice, Ho Chi Minh City University of Food Industry (HUFI), Ho Chi Minh City 756100, Vietnam.

出版信息

ACS Omega. 2022 Oct 18;7(43):38299-38310. doi: 10.1021/acsomega.2c02462. eCollection 2022 Nov 1.

DOI:10.1021/acsomega.2c02462
PMID:36340107
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9631919/
Abstract

This study reports the ability of zinc borate (ZB) and nano silica (NS) in improving mechanical properties and thermal behavior of nanocomposites and coatings composed of epoxy resin EPIKOTE 1001 × 75 cured with hardener T31. The properties of the fabricated nanocomposites were characterized using scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, derivative thermogravimetry, differential scanning calorimetry, and dynamic mechanical analysis. With the addition content of 5 wt % ZB into epoxy resin (EPIKOTE 1001 × 75/T31/ZB-5), the impact strength of the fabricated epoxy polymer film increased by 50%, and the glass transition temperature ( ) increased from 52 to 71 °C. By adding the content of 5 wt % ZB and 1 wt % NS into epoxy resin (EPIKOTE 1001 × 75/T31/ZB-5/NS-1), the impact strength of the formed epoxy nanocomposite films increased by 137.5%, and increased from 52 to 82 °C. The results showed that 5 wt % ZB, 1 wt % NS, and hardener T31 improved the toughness and mechanical properties of epoxy polymer materials. The thermal stability of epoxy composite EPIKOTE 1001 × 75/T31/ZB-5 increased by 1.9% and that of epoxy nanocomposite EPIKOTE 1001 × 75/T31/ZB-5/NS-1 increased by 4.7%. The epoxy coating based on epoxy resin EPIKOTE 1001 × 75/T31/ZB-5/NS-1 achieved mechanical properties and had the strongest decomposition temperature at 642 °C.

摘要

本研究报告了硼酸锌（ZB）和纳米二氧化硅（NS）对由固化剂T31固化的环氧树脂EPIKOTE 1001×75组成的纳米复合材料和涂层的机械性能及热行为的改善能力。使用扫描电子显微镜、透射电子显微镜、热重分析、微商热重法、差示扫描量热法和动态力学分析对制备的纳米复合材料的性能进行了表征。在环氧树脂（EPIKOTE 1001×75/T31/ZB - 5）中添加5 wt%的ZB，制备的环氧聚合物薄膜的冲击强度提高了50%，玻璃化转变温度（ ）从52℃提高到71℃。在环氧树脂（EPIKOTE 1001×75/T31/ZB - �/NS - 1）中添加5 wt%的ZB和1 wt%的NS，形成的环氧纳米复合薄膜的冲击强度提高了137.5%， 从52℃提高到82℃。结果表明，5 wt%的ZB、1 wt%的NS和固化剂T31改善了环氧聚合物材料的韧性和机械性能。环氧复合材料EPIKOTE 1001×75/T31/ZB - 5的热稳定性提高了1.9%，环氧纳米复合材料EPIKOTE 1001×75/T31/ZB - 5/NS - 1的热稳定性提高了4.7%。基于环氧树脂EPIKOTE 1001×75/T31/ZB - 5/NS - 1的环氧涂层具有机械性能，其最强分解温度为642℃。

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