The shape effect and mechanism of particle‐reinforced shear‐thickening gel composites

In order to meet the requirements of practical applications, the shape effect of particles and their shear‐thickening mechanism is very crucial to the shear thickening gels (STG). In this work, three kinds of STG/particle composites were successfully prepared by blending nanoscale SiO2, microscale M...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2022-07, Vol.139 (27), p.n/a
Main Authors: Lin, Huan, Shao, Jianming, Cai, Lihai, Liu, Wenyan, Li, Wanli, Dong, Xia
Format: Article
Language:English
Subjects:
Bearing capacity
Carbon fiber reinforced plastics
composites
Drop hammers
Energy absorption
Gels
Hammers
Impact resistance
Impact tests
Materials science
mechanical properties
Nanoparticles
Particulate composites
Polymers
Rheological properties
rheology
Shape effects
Shear
Shear thickening (liquids)
Silicon dioxide
Storage modulus
Thickening
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In order to meet the requirements of practical applications, the shape effect of particles and their shear‐thickening mechanism is very crucial to the shear thickening gels (STG). In this work, three kinds of STG/particle composites were successfully prepared by blending nanoscale SiO2, microscale MWCNTs, and millimeter‐scale carbon fiber in STG. The Rheological Property, compression, and impact resistance of STG/particle composites were tested and analyzed. The results showed that the enhancement of the shear‐thickening properties of STG by nanoparticles was more pronounced than that of micrometer and millimeter‐sized particles. Nanoscale SiO2 significantly improved the storage modulus of STG, the G'max of STG/6%SiO2 increased by 124.63% compared with pure STG. Nanoscale SiO2 also had a great enhancement effect on the compression resistance of STG, the bearing capacity of STG/6%SiO2 and STG increased by 7.7 and 4.5 times. Furthermore, the energy absorption of STG/6%SiO2 and STG increased by 545% and 282% respectively. The drop hammer impact test also showed that STG/6%SiO2 had the best impact resistance. In addition, a possible mechanism of shear‐thickening properties of particle‐enhanced STG was proposed.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.52506