SELF-HEALING OF ELASTOMER COMPOSITIONS BASED ON BLENDS OF NITRILE BUTADIENE RUBBER AND LIQUID THIOKOL
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
KNITU
2.
Kazan National Research Technical University named after A.N. Tupolev
3.
OOO «Sibur PoliLab»
4.
OOO "Sibur PoliLab"
5.
KNITU
6.
Kazan National Research Technological University
Kazan, Russian Federation
Kazan, Russian Federation
7.
Kazan National Research Technological University
Kazan, Russian Federation
Kazan, Russian Federation
Type:
Article
Pages:
from 96
to 99
Status:
Published
Received:
28.01.2026
Accepted:
08.02.2026
Published:
26.02.2026
Language:
Russian
Keywords:
BUTADIENE-NITRILE RUBBER, LIQUID THIOKOL, SELF-HEALING COMPOSITIONS
Funding:
Issledovanie vypolneno v ramkah Gosudarstvennogo zadaniya № 075-00021-26-00 ot 12.01.2026 (FZSG-206-0003).
Abstract:
The possibility of using liquid thiokol as a modifier facilitating the self-healing of defects in nitrile-butadiene rubber-based materials that appear during service was studied. The self-healing effect of vulcanized compounds based on a mixture of nitrile-butadiene rubber and liquid thiokol after heat treatment was demonstrated. Rubber compounds based on nitrile-butadiene rubber and liquid thiokol were prepared in a Brabender plastic mixer (Germany). The mixing temperature was 100°C, the mixing time was 12 minutes, and the mixer rotor speed was 60 rpm. A combination of p-quinone dioxime (p-QDO) and manganese dioxide (MnO2) was used as the vulcanizing system; the ratio of ingredients in the redox system was 3:6. Vulcanization was performed in a hydraulic press at 150°C for 30 minutes. The resulting material was subjected to both scratch- and complete mechanical disintegration. It was shown that after heat treatment, the surface of the NBR-based material and liquid thiokol was completely restored: traces of damage and defects disappeared. Thus, imparting self-healing properties and resistance to damage, such as scratches and cracks, to the elastomer composites under study expands the scope of application of materials based on a blend of NBR and liquid thiokol. This is particularly relevant for seals and sealing joints.
The possibility of using liquid thiokol as a modifier facilitating the self-healing of defects in nitrile-butadiene rubber-based materials that appear during service was studied. The self-healing effect of vulcanized compounds based on a mixture of nitrile-butadiene rubber and liquid thiokol after heat treatment was demonstrated. Rubber compounds based on nitrile-butadiene rubber and liquid thiokol were prepared in a Brabender plastic mixer (Germany). The mixing temperature was 100°C, the mixing time was 12 minutes, and the mixer rotor speed was 60 rpm. A combination of p-quinone dioxime (p-QDO) and manganese dioxide (MnO2) was used as the vulcanizing system; the ratio of ingredients in the redox system was 3:6. Vulcanization was performed in a hydraulic press at 150°C for 30 minutes. The resulting material was subjected to both scratch- and complete mechanical disintegration. It was shown that after heat treatment, the surface of the NBR-based material and liquid thiokol was completely restored: traces of damage and defects disappeared. Thus, imparting self-healing properties and resistance to damage, such as scratches and cracks, to the elastomer composites under study expands the scope of application of materials based on a blend of NBR and liquid thiokol. This is particularly relevant for seals and sealing joints.
Keywords:
BUTADIENE-NITRILE RUBBER, LIQUID THIOKOL, SELF-HEALING COMPOSITIONS
BUTADIENE-NITRILE RUBBER, LIQUID THIOKOL, SELF-HEALING COMPOSITIONS
