title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÑÐ³Ð»ÐµÑÐ¾Ð´Ð½ÑÑ Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð° Ð½Ð° Ð¿ÑÐ¾ÑÐµÑÑÑ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÑÐ°ÑÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ½ÑÑ Ð¿Ð»ÐµÐ½Ð¾Ðº Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐµÑÐ¼Ð¾ÑÑÐ¾Ð¹ÐºÐ¸Ñ Ð¿Ð¾Ð»Ð¸Ð¸Ð¼Ð¸Ð´Ð¾Ð²
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: The study of the influence of carbon nanoparticles of various types on the processes of thermal aging of composite films based on heat-resistant polyimides
Creators: name: ÐÑÐ½ÑÐ¼Ð°Ð½, ÐÐ³Ð¾ÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÐÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ
ÐÐ¾Ð»Ð¸Ð¸Ð¼Ð¸Ð´Ñ
ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð°
ÑÐµÑÐ¼Ð¾ÑÑÐ°Ð±Ð¸Ð»ÑÐ½Ð¾ÑÑÑ
ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ðµ ÑÑÐ°ÑÐµÐ½Ð¸Ðµ
Ð¼ÐµÑ Ð°Ð½Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð°
thermal properties
thermal stability
thermal aging
mechanical properties

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÑÐ³Ð»ÐµÑÐ¾Ð´Ð½ÑÑ Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð° Ð½Ð° Ð¿ÑÐ¾ÑÐµÑÑÑ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÑÐ°ÑÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ½ÑÑ Ð¿Ð»ÐµÐ½Ð¾Ðº Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐµÑÐ¼Ð¾ÑÑÐ¾Ð¹ÐºÐ¸Ñ Ð¿Ð¾Ð»Ð¸Ð¸Ð¼Ð¸Ð´Ð¾Ð².Â ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¿Ð¾ÑÐ¾Ð±Ð¾Ð² Ð¼Ð¾Ð´Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸ Ð¿Ð»ÐµÐ½Ð¾ÑÐ½ÑÑ Ð½Ð°Ð½Ð¾ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ½ÑÑ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð² Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð³ÐµÑÐµÑÐ¾Ð°ÑÐ¾Ð¼Ð°ÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¿Ð¾Ð»Ð¸Ð¸Ð¼Ð¸Ð´Ð¾Ð² (PI) ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¸ Ð²Ð°Ð¶Ð½Ñ Ð´Ð»Ñ Ð¼Ð½Ð¾Ð¶ÐµÑÑÐ²Ð° Ð¾ÑÑÐ°ÑÐ»ÐµÐ¹ ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð¹ ÑÐµÑÐ½Ð¸ÐºÐ¸. ÐÐ»Ð°Ð³Ð¾Ð´Ð°ÑÑ Ð²ÑÑÐ¾ÐºÐ¸Ð¼ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ð¼ Ð¸ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¸Ð¼ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð°Ð¼, ÑÐ¸Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð¸ ÑÐ°Ð´Ð¸Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÑÐ¾Ð¹ÐºÐ¾ÑÑÐ¸, Ð½Ð¸Ð·ÐºÐ¾Ð¹ Ð´Ð¸ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¿ÑÐ¾Ð½Ð¸ÑÐ°ÐµÐ¼Ð¾ÑÑÐ¸, Ð¼Ð°Ð»ÑÐ¼ Ð·Ð½Ð°ÑÐµÐ½Ð¸ÑÐ¼ ÐºÐ¾ÑÑÑÐ¸ÑÐ¸ÐµÐ½ÑÐ¾Ð² ÑÐµÐ¿Ð»Ð¾Ð²Ð¾Ð³Ð¾ ÑÐ°ÑÑÐ¸ÑÐµÐ½Ð¸Ñ Ð½Ð°Ð½Ð¾ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÑ Ð½Ð° Ð¿Ð¾Ð»Ð¸Ð¸Ð¼Ð¸Ð´Ð½Ð¾Ð¹ Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¼Ð¾Ð³ÑÑ Ð±ÑÑÑ ÐºÑÐ°Ð¹Ð½Ðµ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ñ Ð² ÑÐ¸ÑÐ¾ÐºÐ¾Ð¼ ÑÐ¿ÐµÐºÑÑÐµ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹.Â Ð Ð½Ð°ÑÑÐ¾ÑÑÐµÐ¹ ÑÐ°Ð±Ð¾ÑÐµ Ð±ÑÐ»Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¾ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ ÑÐ³Ð»ÐµÑÐ¾Ð´Ð½ÑÑ Ð½Ð°Ð½Ð¾Ð²Ð¾Ð»Ð¾ÐºÐ¾Ð½ (CNF) Ð¸ Ð½Ð°Ð½ÑÐ¾ÑÑÐ±Ð¾Ðº (CNT), Ð²Ð²Ð¾Ð´Ð¸Ð¼ÑÑ Ð² Ð¼Ð°ÑÑÐ¸ÑÐ½ÑÐ¹ PI PMDA-ODA, Ð½Ð° ÑÑÐ°Ð±Ð¸Ð»ÑÐ½Ð¾ÑÑÑ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº Ð½Ð°Ð½Ð¾ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ½ÑÑ Ð¿Ð»ÐµÐ½Ð¾Ðº Ð¿ÑÐ¸ Ð´Ð»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð¼ Ð¸Ð·Ð¾ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð¼ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ð¸ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑ Ð² Ð´Ð¸Ð°Ð¿Ð°Ð·Ð¾Ð½Ðµ 400-500 Ð¾Ð¡. ÐÐ°Ð½Ð¾ÑÐ°ÑÑÐ¸ÑÑ Ð´Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð° ÑÑÑÐµÑÑÐ²ÐµÐ½Ð½Ð¾ Ð¿Ð¾Ð²ÑÑÐ°ÑÑ Ð½Ð°ÑÐ°Ð»ÑÐ½ÑÑ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÑÑ Ð¶ÐµÑÑÐºÐ¾ÑÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¾Ð², ÑÑÐ¾ Ð´Ð¾ÑÑÐ¸Ð³Ð°ÐµÑÑÑ Ð±Ð»Ð°Ð³Ð¾Ð´Ð°ÑÑ Ð²ÑÑÐ¾ÐºÐ¾Ð¹ ÑÑÐµÐ¿ÐµÐ½Ð¸ ÑÐ¾Ð²Ð¼ÐµÑÐµÐ½Ð¸Ñ Ð¼Ð°ÑÑÐ¸ÑÑ Ð¸ Ð½Ð°Ð¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»Ñ: Ð¼Ð¾Ð´ÑÐ»Ñ ÑÐ¿ÑÑÐ³Ð¾ÑÑÐ¸ Ð´Ð»Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¾Ð², ÑÐ¾Ð´ÐµÑÐ¶Ð°ÑÐ¸Ñ 2 Ð¾Ð±. % CNT Ð¸ 5 Ð¾Ð±. % CNF, Ð½Ð° 25 Ð¸ 18 %, ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÐµÐ½Ð½Ð¾. ÐÐ»Ñ Ð²ÑÑÐ²Ð»ÐµÐ½Ð¸Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ° Ð¸ Ð¸Ð½ÑÐµÐ½ÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸Ñ Ð½Ð° ÑÑÐ°Ð±Ð¸Ð»ÑÐ½Ð¾ÑÑÑ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº Ð±ÑÐ» Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ ÑÑÐ°Ð²Ð½Ð¸ÑÐµÐ»ÑÐ½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· ÐºÐ°Ðº Ð½Ð°ÑÐ°Ð»ÑÐ½ÑÑ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº Ð¼Ð°ÑÑÐ¸ÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¸Ð¼ÐµÑÐ° Ð¸ Ð½Ð°Ð½Ð¾ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¾Ð² Ð½Ð° ÐµÐ³Ð¾ Ð¾ÑÐ½Ð¾Ð²Ðµ, ÑÐ°Ðº Ð¸ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº, ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐ¸Ñ Ð¿Ð»ÐµÐ½Ð¾ÑÐ½ÑÐ¼ Ð¾Ð±ÑÐ°Ð·ÑÐ°Ð¼ ÑÐµÑ Ð¶Ðµ ÑÐ¾ÑÑÐ°Ð²Ð¾Ð², Ð¿Ð¾Ð´Ð²ÐµÑÐ³Ð½ÑÑÑÑ Ð¸Ð·Ð¾ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð¼Ñ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½Ð¾Ð¹ Ð´Ð»Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ñ.Ðµ. ÑÐµÐ¿Ð»Ð¾Ð²Ð¾Ð¼Ñ ÑÑÐ°ÑÐµÐ½Ð¸Ñ.Â Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð±ÑÐ»Ð¾ ÑÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¾, ÑÑÐ¾ Ð² Ð½Ð°Ð½Ð¾ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ½ÑÑ Ð¿Ð»ÐµÐ½ÐºÐ°Ñ Ð¿ÑÐ¾ÑÐµÑÑÑ ÑÑÐ°ÑÐµÐ½Ð¸Ñ Ð¿ÑÐ¾ÑÐµÐºÐ°ÑÑ Ð¼ÐµÐ½ÐµÐµ Ð¸Ð½ÑÐµÐ½ÑÐ¸Ð²Ð½Ð¾, ÑÐµÐ¼ Ð² Ð¼Ð°ÑÑÐ¸ÑÐ½Ð¾Ð¼ PI: Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÑ Ð¸ Ð¿ÑÐµÐ´ÐµÐ»ÑÐ½Ð°Ñ Ð´ÐµÑÐ¾ÑÐ¼Ð°ÑÐ¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¾Ð², ÑÐ¾Ð´ÐµÑÐ¶Ð°ÑÐ¸Ñ ÐºÐ°Ðº CNF, ÑÐ°Ðº Ð¸ CNT, ÑÐ½Ð¸Ð¶Ð°ÑÑÑÑ Ð¼ÐµÐ´Ð»ÐµÐ½Ð½ÐµÐµ, ÑÐµÐ¼ ÑÑÐ¸ Ð¶Ðµ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ Ð¿Ð»ÐµÐ½ÐºÐ¸ Ð¼Ð°ÑÑÐ¸ÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¸Ð¸Ð¼Ð¸Ð´Ð°. Ð­ÑÐ¾ ÑÐºÐ°Ð·ÑÐ²Ð°ÐµÑ Ð½Ð° Ð½Ð°Ð»Ð¸ÑÐ¸Ðµ Ð´Ð¾Ð¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»ÑÐ½ÑÑ ÑÐ¸Ð·Ð¸ÐºÐ¾-ÑÐ¸Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ð¹ Ð¼ÐµÐ¶Ð´Ñ Ð¼Ð°ÐºÑÐ¾ÑÐµÐ¿ÑÐ¼Ð¸ PI Ð¸ Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÑÑ Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸Ñ, Ð¾ÐºÐ°Ð·ÑÐ²Ð°ÑÑÐ¸Ñ ÑÑÐ°Ð±Ð¸Ð»Ð¸Ð·Ð¸ÑÑÑÑÐµÐµ Ð´ÐµÐ¹ÑÑÐ²Ð¸Ðµ Ð½Ð° Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ Ð½Ð°Ð½Ð¾ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¾Ð².
description: The subject of the graduate qualification work is âThe study of the influence of carbon nanoparticles of various types on the processes of thermal aging of composite films based on heat-resistant polyimidesâ.Â Research on modification methods of film nanocomposite materials based on heteroaromatic polyimides (PI) is critically important for many fields of modern technology. Due to their high thermal and mechanical properties, chemical and radiation resistance, low dielectric permittivity and low thermal expansion coefficients polyimide-based nanocomposites can be used extremely effectively in a wide range of applications.Â In this graduate work, the effect of carbon nanofibers (CNF) and carbon nanotubes (CNT) introduced into the matrix PI PMDA-ODA on the stability of the mechanical characteristics of nanocomposite films under prolonged isothermal exposure to temperatures in the range of 400-500 oC was investigated. Nanoparticles of these types significantly increase the initial mechanical stiffness of the composites, which is achieved due to the high degree of compatibility of the matrix and filler: the modulus of elasticity for composites containing 2 vol. % CNT and 5 vol. % CNF, by 25 and 18 %, respectively. To reveal the nature and intensity of the influence of nanoparticles on the stability of mechanical characteristics, a comparative analysis was carried out both of the initial mechanical characteristics of the matrix polymer and nanocomposites based on it, and of the characteristics corresponding to film samples of the same compositions subjected to isothermal action of various durations, i.e., thermal aging. As a result, it was found that aging processes in nanocomposite films proceed less intensively than in matrix PI: the strength and ultimate strain of composites containing both CNF and CNT decrease more slowly than these characteristics of the matrix polyimide film. This indicates the presence of additional physicochemical interactions between the PI macrochains and the surface of the nanoparticles, which have a stabilizing effect on the mechanical characteristics of nanocompositeâs.