plasticnewsПластические массыPlasticheskie massy0554-2901PLASTMASSY Publishing House (Moscow)plasticnews-338Research ArticleСтатьиЭкспериментальные свидетельства неоднозначности влияния графена на прочность и стойкость полиэпоксидаСтарокадомскийД. Л.stard3@i.uaИнститут Химии Поверхности им.акад.ААЧуйкоRussian Federation20190506201901-23136Copyright © Старокадомский Д.Л., 20192019Старокадомский Д.Л.Старокадомский Д.Л.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.plastics-news.ru/jour/article/view/338

Установлено, что наполнение графенами (из спиртовых растворов плотности 8 и 31 г\л) снижает прочность при сжатии и стойкость к истиранию, прочностную термостойкость (на примере полуторакратного падения прочности при сжатии при 25 и 200оС), а также стойкость к агрессивным жидкостям (на примере конц.азотной кислоты, хлорметилена и смеси ацетона с этилацетатом). Наиболее вероятной причиной того автор видит особенности пластинчатой структуры графена, склонной к дезактивации (самосворачианию) частиц и поэтому чувствительной к технологии его замеса в смоле при отверждении. Вместе с тем наблюдается практически важное повышение (в 1,3-1,8 раз) прочности при нормальном адгезионном отрыве склеенных стальных цилиндров. Исследования показали ограниченность позитивных эффектов графена как наполнителя эпоксидов, хотя его введением можно существенно улучшать отдельные практически важные характеристики (адгезию, термо- и электропроводность).

It is established that the filling with graphenes reduces the compressive strength, abrasion resistance, and also resistance to aggressive liquids (conc.HNO3), chloromethylene and a mixture of acetone and ethyl acetate). The probable reason for this is that the author sees the features of the plate structure of graphene, prone to deactivation (self-rotation) of particles and therefore sensitive to the technology of its kneading in resin when cured. At the same time, there is a important increase (by 1.3-1.8 times) in the strength at normal adhesion separation of the glued steel cylinders. Studies have shown the limited positive effects of graphene as a filler of epoxides, although its introduction can significantly improve certain practical characteristics (adhesion, thermal and electrical conductivity).

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The authors declare that there are no conflicts of interest present.