当前位置：
X-MOL 学术
›
ACS Sustain. Chem. Eng.
›
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.)
Improved High-Temperature Electrical Properties of Polymeric Material by Grafting Modification
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2022-06-24 , DOI: 10.1021/acssuschemeng.1c08417 Chao Yuan 1, 2 , Yao Zhou 1 , Yujie Zhu 1 , Shixun Hu 1 , Jiajie Liang 1 , Zhen Luo 1 , Bing Gao 2 , Tan Zeng 2 , Yaru Zhang 3 , Juan Li 3 , Shangshi Huang 1 , Zhifei Han 1 , Xiao Yang 1 , Yang Yang 1 , Pengfei Meng 1 , Jun Hu 1 , Jinliang He 1 , Hao Yuan 3 , Qi Li 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2022-06-24 , DOI: 10.1021/acssuschemeng.1c08417 Chao Yuan 1, 2 , Yao Zhou 1 , Yujie Zhu 1 , Shixun Hu 1 , Jiajie Liang 1 , Zhen Luo 1 , Bing Gao 2 , Tan Zeng 2 , Yaru Zhang 3 , Juan Li 3 , Shangshi Huang 1 , Zhifei Han 1 , Xiao Yang 1 , Yang Yang 1 , Pengfei Meng 1 , Jun Hu 1 , Jinliang He 1 , Hao Yuan 3 , Qi Li 1
Affiliation
|
Grafting modification is an effective method to enhance the electrical characteristics of polymeric materials by establishing deep traps that prevent carriers from being injected and transmitted. However, grafted polymers for electrical insulation suffer from large leakage current at elevated temperatures, limiting their application in harsh environments. We report that an itaconic anhydride grafted polypropylene synthesized by the solution grafting method preserves excellent insulating properties up to 120 °C. It is demonstrated that the grafted itaconic anhydride restrains free electrons employing strong electrostatic attraction and obstructs charge injection and transport. Furthermore, we reveal that strong intramolecular forces, deep energy traps, and fragmentized spherulites are essential factors contributing to grafted polymers’ superior high-temperature electrical properties. This work provides insights into the sophisticated charge transport mechanisms in grafted polymers and their effects on the insulation characteristics, which is critical for the suitable design of polymeric materials with exceptional electrical properties.
中文翻译：
接枝改性提高高分子材料的高温电学性能
接枝改性是一种通过建立阻止载流子注入和传输的深陷阱来增强聚合物材料电学特性的有效方法。然而，用于电绝缘的接枝聚合物在高温下会出现较大的漏电流，从而限制了它们在恶劣环境中的应用。我们报道了通过溶液接枝法合成的衣康酸酐接枝聚丙烯在高达 120 °C 的温度下仍保持出色的绝缘性能。结果表明，接枝衣康酸酐通过强静电引力抑制自由电子并阻碍电荷注入和传输。此外，我们揭示了强大的分子内力、深能量陷阱、和破碎的球晶是促成接枝聚合物优异的高温电性能的重要因素。这项工作提供了对接枝聚合物中复杂的电荷传输机制及其对绝缘特性的影响的见解，这对于合适设计具有优异电性能的聚合物材料至关重要。
更新日期：2022-06-24
中文翻译：
接枝改性提高高分子材料的高温电学性能
接枝改性是一种通过建立阻止载流子注入和传输的深陷阱来增强聚合物材料电学特性的有效方法。然而，用于电绝缘的接枝聚合物在高温下会出现较大的漏电流，从而限制了它们在恶劣环境中的应用。我们报道了通过溶液接枝法合成的衣康酸酐接枝聚丙烯在高达 120 °C 的温度下仍保持出色的绝缘性能。结果表明，接枝衣康酸酐通过强静电引力抑制自由电子并阻碍电荷注入和传输。此外，我们揭示了强大的分子内力、深能量陷阱、和破碎的球晶是促成接枝聚合物优异的高温电性能的重要因素。这项工作提供了对接枝聚合物中复杂的电荷传输机制及其对绝缘特性的影响的见解，这对于合适设计具有优异电性能的聚合物材料至关重要。
京公网安备 11010802027423号