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Preparation and characterization of imidazolyl ionic liquid‐based shear thickening dispersion system
Author(s) -
Cao Chuanzhi,
Luo Yan,
Xiao Min
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.49719
Subject(s) - dilatant , materials science , thixotropy , rheology , ionic liquid , polyethylene glycol , dispersant , dispersion (optics) , shear rate , viscoelasticity , chemical engineering , composite material , dispersion stability , shear (geology) , chemistry , organic chemistry , polymer , physics , optics , engineering , catalysis
Shear thickening liquid (STF) is a new nonNewtonian fluid widely used in industrial production. In this paper, a novel shear thickening and dispersing system, namely poly methyl methacrylate (PMMA)/1‐butyl‐3‐methylimidazole hexa‐fluorophosphate ([BMIM]PF 6 ), was prepared using ultrasonic with PMMA as the dispersing phase and [BMIM]PF 6 as the dispersing medium. The stability, thixotropic, reversibility, rheology, and viscoelasticity of the dispersion system was studied, respectively. The dispersed system has good stability. The dispersed system shows high response sensitivity to shear rate, as well as good reversibility to shear thickening. Compared with traditional silicon dioxide/polyethylene glycol dispersion system, PMMA/[BMIM]PF 6 dispersion system displays a significantly enhanced shear thickening effect. Nonionic surfactant triton X‐100 of 4 wt% can greatly improve PMMA/[BMIM]PF 6 dispersion system's shear thickening behavior. This paper provides a new idea for the further development of protective materials by using STF.