Poly(acrylated epoxidized soybean oil)-modified carbon nanotubes and their application in epoxidized soybean oil-based thermoset composites,Polymer Composites

当前位置： X-MOL 学术 › Polym. Compos. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Poly(acrylated epoxidized soybean oil)-modified carbon nanotubes and their application in epoxidized soybean oil-based thermoset composites
Polymer Composites ( IF 4.8 ) Pub Date : 2021-08-18 , DOI: 10.1002/pc.26259
Qiuyu Tang ₁ , Qian Li ₁ , Xun Pan ₂ , Zhenhao Xi ₁ , Ling Zhao _{1,

3}

Affiliation

Poly(acrylated epoxidized soybean oil) (PAESO) has been grafted on the surface of multiwalled carbon nanotubes (MWCNTs) by reversible addition–fragmentation chain-transfer reaction (RAFT). MWCNTs–PAESO as reinforcement has been successfully applied to prepare epoxidized soybean oil/maleopimaric-based thermosetting composites with good dispersion through probe ultrasonic treatment in ethyl acetate. Micromorphology analyses on composites by transmission electron microscopy and scanning electron microscopy show that MWCNTs–PAESO has better dispersion stability in both ethyl acetate and epoxy matrix and better interface bonding effect with cured matrix, resulting in more uniformly and separately dispersed behavior than hydroxylated multiwalled carbon nanotubes. Correspondingly, by the method of molecular dynamics simulation, it is verified that the nonbond energy and van der Waals force of CNTs–PAESO in solvent can be relatively reduced, and that CNTs–PAESO possesses higher binding energy with matrix compared with CNTsOH. Therefore, MWCNTs–PAESO and PAESO have synergistic enhancement on the mechanical properties of composites demonstrated by rheology testing and dynamic mechanical analysis. The appropriate amount of MWCNTs–PAESO loading at 0.15 wt% can increase the glass transition temperature (T_g) of thermoset from 83.8 to 96.3°C, resulting in the improvement of both mechanical and thermal properties. These results show that surface-grafting MWCNTs with homologous polymer can effectively increase the interfacial compatibility between matrix and MWCNTs, thereby improving the thermal and mechanical properties of composites.

中文翻译：

聚（丙烯酸酯化环氧化豆油）改性碳纳米管及其在环氧化豆油基热固性复合材料中的应用

聚（丙烯酸酯化环氧化大豆油）（PAESO）已通过可逆加成-断裂链转移反应（RAFT）接枝在多壁碳纳米管（MWCNT）的表面。MWCNTs-PAESO 作为增强剂已成功应用于通过在乙酸乙酯中探针超声处理制备具有良好分散性的环氧化大豆油/马来海松酸基热固性复合材料。通过透射电子显微镜和扫描电子显微镜对复合材料的微观形貌分析表明，MWCNTs-PAESO 在乙酸乙酯和环氧树脂基体中具有更好的分散稳定性和更好的与固化基体的界面结合效果，导致比羟基化多壁碳纳米管更均匀和分开的分散行为. 相应地，通过分子动力学模拟的方法，哦。因此，通过流变学测试和动态力学分析证明，MWCNTs-PAESO 和 PAESO 对复合材料的力学性能具有协同增强作用。多壁碳纳米管-PAESO装载在0.15％（重量）的适当量可以提高玻璃化转变温度（Ť_克热固性的）从83.8至96.3℃，从而导致机械和热性质的提高。这些结果表明，用同源聚合物表面接枝多壁碳纳米管可以有效地增加基体和多壁碳纳米管之间的界面相容性，从而提高复合材料的热性能和机械性能。

更新日期：2021-08-18

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11