环氧树脂
材料科学
固化(化学)
硫化
纳米复合材料
傅里叶变换红外光谱
复合材料
流变仪
动态力学分析
纳米颗粒
自催化
动力学
化学工程
聚合物
天然橡胶
纳米技术
物理
量子力学
工程类
作者
Mohammad Hossein Karami,Mohammadreza Kalaee,Saeideh Mazinani,Mohamadreza Shakiba,Saied Shafiei Navid,Majid Abdouss,Alireza Beig Mohammadi,Weisong Zhao,Mojtaba Koosha,Ziyue Song,Tianduo Li
出处
期刊:Molecules
[MDPI AG]
日期:2022-04-30
卷期号:27 (9): 2870-2870
被引量:3
标识
DOI:10.3390/molecules27092870
摘要
In this study, the curing kinetics of epoxy nanocomposites containing ultra-fine full-vulcanized acrylonitrile butadiene rubber nanoparticles (UFNBRP) at different concentrations of 0, 0.5, 1 and 1.5 wt.% was investigated. In addition, the effect of curing temperatures was studied based on the rheological method under isothermal conditions. The epoxy resin/UFNBRP nanocomposites were characterized via Fourier transform infrared spectroscopy (FTIR). FTIR analysis exhibited the successful preparation of epoxy resin/UFNBRP, due to the existence of the UFNBRP characteristic peaks in the final product spectrum. The morphological structure of the epoxy resin/UFNBRP nanocomposites was investigated by both field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) studies. The FESEM and TEM studies showed UFNBRP had a spherical structure and was well dispersed in epoxy resin. The chemorheological analysis showed that due to the interactions between UFNBRP and epoxy resin, by increasing UFNBRP concentration at a constant temperature (65, 70 and 75 °C), the curing rate decreases at the gel point. Furthermore, both the curing kinetics modeling and chemorheological analysis demonstrated that the incorporation of 0.5% UFNBRP in epoxy resin matrix reduces the activation energy. The curing kinetic of epoxy resin/UFNBRP nanocomposite was best fitted with the Sestak–Berggren autocatalytic model.
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