|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ЦЭМИ РАН |
||
Epoxy Phase-Change Materials Based on Paraffin Wax Stabilized by Asphaltenesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 февраля 2024 г.
- Авторы: Ilyina Svetlana O., Vlasova Anna V., Gorbunova Irina Y., Lukashov Nikolai I., Kerber Michael L., Ilyin Sergey O.
- Журнал: Polymers
- Том: 15
- Номер: 15
- Год издания: 2023
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Номер статьи: 3243
- DOI: 10.3390/polym15153243
- Аннотация: The usual problem of meltable phase-change agents is the instability in their form upon heating, which can be solved by placing them into a continuous polymer matrix. Epoxy resin is a suitable medium for dispersing molten agents, but it is necessary to make the obtained droplets stable during the curing of the formed phase-change material. This work shows that molten paraffin wax forms a Pickering emulsion in an epoxy medium and in the presence of asphaltenes extracted from heavy crude oil. Theoretical calculations revealed the complex equilibrium in the epoxy/wax/asphaltene triple system due to their low mutual solubility. Rheological studies showed the viscoplastic behavior of the obtained dispersions at 25 °C, which disappears upon the heating and melting of the paraffin phase. Wax and asphaltenes increased the viscosity of the epoxy medium during its curing but did not inhibit cross-linking or reduce the glass transition temperature of the cured polymer. As a result of curing, it is possible to obtain phase-change materials containing up to 45% paraffin wax that forms a dispersed phase with a size of 0.2–6.5 μm. The small size of dispersed wax can decrease its degree of crystallinity to 13–29% of its original value, reducing the efficiency of the phase-change material.
- Добавил в систему: Ильин Сергей Олегович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Epoxy Phase-Change Materials Based on Paraffin Wax Stabilized by Asphaltenes | Epoxy_Phase-Change_Materials_Based_on_Paraffin_Wax_Stabiliz… | 17,0 МБ | 1 августа 2023 [s.o.ilyin@gmail.com] |