环氧热固性材料中氨丙基封端硅氧烷处理的碳纳米管的增强作用：力学性能和热性能

Reinforcement of Aminopropyl-Terminated Siloxane-Treated Carbon Nanotubes in Epoxy Thermosets: Mechanical and Thermal Properties.

作者信息

Sun Yuxin, Zhang Xiwen, Zhao Dongyu

机构信息

School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.

Key Laboratory of Chemical Engineering Process & Technology for High-Efficiency Conversion, College of Heilongjiang Province, Harbin 150080, China.

出版信息

Polymers (Basel). 2023 Jul 27;15(15):3184. doi: 10.3390/polym15153184.

DOI:10.3390/polym15153184

PMID:37571078

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10421086/

Abstract

The synthesis and characterization of aminopropyl-terminated polydimethylsiloxane- treated carbon nanotube (AFCNT)-reinforced epoxy nanocomposites are reported in the current study. The amine functionalization of the CNTs was performed with a reaction to PDMS-NH. The AFCNTs were homogeneously dispersed in epoxy resin by using an emulsifier and a three-roller mill. The AFCNTs were characterized using Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The curing behavior of the epoxy/AFCNT was studied using a differential scanning calorimeter (DSC). The tensile and impact strengths of the 2.0 wt.% AFCNT-reinforced epoxy nanocomposite were enhanced by 43.2% and 370%, respectively. Moreover, the glass transition temperature () was also enhanced by 21 °C. Furthermore, significant enhancements were observed in the initial degradation and char yield values. SEM results confirmed that the AFCNTs were highly dispersed in the polymeric matrix.

摘要

本研究报道了氨丙基封端的聚二甲基硅氧烷处理的碳纳米管（AFCNT）增强环氧纳米复合材料的合成与表征。通过与PDMS-NH反应对碳纳米管进行胺功能化。使用乳化剂和三辊研磨机将AFCNTs均匀分散在环氧树脂中。使用傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）对AFCNTs进行表征。使用差示扫描量热仪（DSC）研究环氧/AFCNT的固化行为。2.0 wt.%的AFCNT增强环氧纳米复合材料的拉伸强度和冲击强度分别提高了43.2%和370%。此外，玻璃化转变温度（）也提高了21℃。此外，在初始降解和残炭率值方面观察到显著提高。SEM结果证实AFCNTs高度分散在聚合物基体中。