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Aramid nanofiber reinforced nitrile rubber assisted by cellulose nanocrystals
Author(s) -
Guo Zonglei,
Guo Dashuang,
Liu Fujun,
Wang Hui,
Song Jianhui
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50546
Subject(s) - aramid , materials science , ultimate tensile strength , composite material , nanofiber , vulcanization , nitrile rubber , natural rubber , cellulose , nitrile , composite number , fiber , nanocellulose , chemical engineering , chemistry , organic chemistry , engineering
A fiber‐reinforced rubber composite was prepared by mixing aramid nanofibers (ANF) suspension and nitrile rubber (NBR) latex. The effects of ANF content and corresponding surface modification on the microstructure, vulcanization performance, processing and mechanical properties of composite materials, were systematically investigated. We found that, compared with commonly used short‐cut aramid fibers, ANF fillers tend to form a stronger filling network within NBR matrix, resulting in a pronounced Payne effect. By improving the interfacial adhesion via dopamine (DA) coating onto ANF surface, the tensile strength can be further enhanced as expected. Besides, to eliminate the detriment of mechanical performance due to residual sodium polyacrylate in the course of flocculation, cellulose nanocrystal (CNC) was adopted to serve as a thickener during solution mixing. The incorporation of CNC can significantly improve the mechanical properties, which identifies a synergistic reinforcement effect arising from the cooperation of two types of fillers.