TY - JOUR
T1 - Enhancement of the ballistic performance of aramid fabric with polyurethane and shear thickening fluid
AU - Wang, Xingwei
AU - Zhang, Jianbin
AU - Bao, Luyao
AU - Yang, Wufang
AU - Zhou, Feng
AU - Liu, Weimin
N1 - Publisher Copyright:
© 2020
PY - 2020/11
Y1 - 2020/11
N2 - Conventionally, the shear thickening fluid (STF) is used to improve the ballistic performance of aramid fabric because its shear thickening property increases the friction of inter-yarns. However, intuitively, enhancing the inter-yarn adhesion is an easier method. In this study, the adhesive polyurethane (PU) was utilized. The aramid fabrics impregnated with STF, the composite of STF and PU (STF-PU), and PU were compared in terms of the resistance to single yarn pull-out, the flexibility of fabric and the high-velocity impact test, respectively. Due to the robust adhesion of PU, comparing with STF/aramid fabric, a small amount of PU within STF-PU could strengthen the resistance of inter-yarn relative motion significantly and decrease mass loading intensively. Meantime, the flexibility had a little compromise due to unique heterogeneous structure in striking contrast with PU/aramid whose flexibility was impaired extremely. When it came to the high-velocity impact test, STF-PU/aramid showed outright advantages over STF/aramid and PU/aramid composite. It was also illuminated that excessively strong resistance to the yarn mobility was adverse for the high-velocity impact. Confidently, this work provides a new avenue in the development of flexible armor.
AB - Conventionally, the shear thickening fluid (STF) is used to improve the ballistic performance of aramid fabric because its shear thickening property increases the friction of inter-yarns. However, intuitively, enhancing the inter-yarn adhesion is an easier method. In this study, the adhesive polyurethane (PU) was utilized. The aramid fabrics impregnated with STF, the composite of STF and PU (STF-PU), and PU were compared in terms of the resistance to single yarn pull-out, the flexibility of fabric and the high-velocity impact test, respectively. Due to the robust adhesion of PU, comparing with STF/aramid fabric, a small amount of PU within STF-PU could strengthen the resistance of inter-yarn relative motion significantly and decrease mass loading intensively. Meantime, the flexibility had a little compromise due to unique heterogeneous structure in striking contrast with PU/aramid whose flexibility was impaired extremely. When it came to the high-velocity impact test, STF-PU/aramid showed outright advantages over STF/aramid and PU/aramid composite. It was also illuminated that excessively strong resistance to the yarn mobility was adverse for the high-velocity impact. Confidently, this work provides a new avenue in the development of flexible armor.
KW - Aramid fabric
KW - Ballistic performance
KW - Impact resistance
KW - Polyurethane
KW - Shear thickening fluid
KW - Soft armor
UR - http://www.scopus.com/inward/record.url?scp=85090144156&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2020.109015
DO - 10.1016/j.matdes.2020.109015
M3 - 文章
AN - SCOPUS:85090144156
SN - 0264-1275
VL - 196
JO - Materials and Design
JF - Materials and Design
M1 - 109015
ER -