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XNBR/环氧树脂/XNBR接枝埃洛石纳米管（HNT）纳米复合材料的等温硫化及非等温降解动力学

Isothermal Vulcanization and Non-Isothermal Degradation Kinetics of XNBR/Epoxy/XNBR-g-Halloysite Nanotubes (HNT) Nanocomposites.

作者信息

Paran Seyed Mohamad Reza, Naderi Ghasem, Movahedifar Elnaz, Jouyandeh Maryam, Formela Krzysztof, Colom Xavier, Cañavate Javier, Saeb Mohammad Reza

机构信息

Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran P.O. Box 14965/115, Iran.

Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran P.O. Code 14176/14411, Iran.

出版信息

Materials (Basel). 2021 May 27;14(11):2872. doi: 10.3390/ma14112872.

DOI:10.3390/ma14112872
PMID:34072028
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8198418/
Abstract

The effect of several concentrations of carboxylated nitrile butadiene rubber (XNBR) functionalized halloysite nanotubes (XHNTs) on the vulcanization and degradation kinetics of XNBR/epoxy compounds were evaluated using experimental and theoretical methods. The isothermal vulcanization kinetics were studied at various temperatures by rheometry and differential scanning calorimetry (DSC). The results obtained indicated that the n order model could not accurately predict the curing performance. However, the autocatalytic approach can be used to estimate the vulcanization reaction mechanism of XNBR/epoxy/XHNTs nanocomposites. The kinetic parameters related to the degradation of XNBR/epoxy/XHNTs nanocomposites were also assessed using thermogravimetric analysis (TGA). TGA measurements suggested that the grafted nanotubes strongly enhanced the thermal stability of the nanocomposite.

摘要

采用实验和理论方法评估了几种浓度的羧基丁腈橡胶（XNBR）功能化埃洛石纳米管（XHNTs）对XNBR/环氧树脂化合物硫化和降解动力学的影响。通过流变学和差示扫描量热法（DSC）在不同温度下研究了等温硫化动力学。所得结果表明，n阶模型不能准确预测固化性能。然而，自催化方法可用于估计XNBR/环氧树脂/XHNTs纳米复合材料的硫化反应机理。还使用热重分析（TGA）评估了与XNBR/环氧树脂/XHNTs纳米复合材料降解相关的动力学参数。TGA测量表明，接枝纳米管显著提高了纳米复合材料的热稳定性。

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