Stretchable Polyurethane Sponge Scaffold Strengthened Shear Stiffening Polymer and Its Enhanced Safeguarding Performance.

A simple and scalable "dip and dry" method was developed for fabricating stretchable polyurethane sponge-based polymer composite with excellent shear stiffening effect, creep resisting and adhesion property. The stiffness of the composite was tunable, the storage modulus (G') could automatically increase 3 orders of magnitude with the increasing of shear frequency, and the G'max could reach to as high as 1.55 MPa. Importantly, the composite with ideal damping capacity reduced the impact force by 2 orders of magnitude even under 26 cycles of consecutive dynamic impact loading with no obvious mechanical degradation. Moreover, an enhancing mechanism was proposed and it was found the "B-O cross bond" and the entanglement of polymer chains were attributed to the shear stiffening characteristic. Finally, the excellent adhesion ability and hydrophobicity guarantee the composite with reliable mechanical performance and longer lifespan.

[1]  Xinglong Gong,et al.  The rheology of shear thickening fluid (STF) and the dynamic performance of an STF-filled damper , 2008 .

[2]  G. Alici,et al.  Study of shear-stiffened elastomers , 2012 .

[3]  Long Bin Tan,et al.  Performance of an advanced combat helmet with different interior cushioning systems in ballistic impact: Experiments and finite element simulations , 2012 .

[4]  Masoud Asgari,et al.  Finite element simulation of ceramic/composite armor under ballistic impact , 2011 .

[5]  M. Meyyappan,et al.  A carbon nanotube-infused polysulfone membrane with polyvinyl alcohol layer for treating oil-containing waste water , 2013, Scientific Reports.

[6]  J. Houston.  A local-probe analysis of the rheology of a , 2005 .

[7]  X. Gong,et al.  Stretchable polyurethane sponge reinforced magnetorheological material with enhanced mechanical properties , 2015 .

[8]  Véronique Michaud,et al.  Structural damping using encapsulated shear thickening fluids , 2012, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[9]  M. Karamiş,et al.  Mutual Action Between MMCS Structure and Projectile After Ballistic Impact , 2008 .

[10]  Eric D. Wetzel,et al.  The ballistic impact characteristics of Kevlar® woven fabrics impregnated with a colloidal shear thickening fluid , 2003 .

[11]  Xinglong Gong,et al.  Creep and recovery behaviors of magnetorheological plastomer and its magnetic-dependent properties , 2012 .

[12]  N. Wagner,et al.  Microstructure of shear-thickening concentrated suspensions determined by flow-USANS , 2009 .

[13]  N. Wagner,et al.  Rheology of non-Brownian particles suspended in concentrated colloidal dispersions at low particle Reynolds number , 2016 .

[14]  N. Wagner,et al.  Shear thickening in colloidal dispersions , 2009 .

[15]  Jeffrey M. Caves,et al.  Deformation responses of a physically cross-linked high molecular weight elastin-like protein polymer. , 2008, Biomacromolecules.

[16]  Xiaogang Chen,et al.  Influence of yarn gripping on the ballistic performance of woven fabrics from ultra-high molecular weight polyethylene fibre , 2014 .

[17]  V. Michaud,et al.  Impact properties of shear thickening fluid impregnated foams , 2014 .

[18]  Romesh C. Batra,et al.  Effect of frame size, frame type, and clamping pressure on the ballistic performance of soft body armor , 2008 .

[19]  Jens Krause,et al.  Polyurethanes: versatile materials and sustainable problem solvers for today's challenges. , 2013, Angewandte Chemie.

[20]  Quinn P. McAllister,et al.  Improved cut-resistance of Kevlar® using controlled interface reactions during atomic layer deposition of ultrathin (<50 Å) inorganic coatings , 2014 .

[21]  M. Atai,et al.  Energy Absorption in a Shear-Thickening Fluid , 2014, Journal of Materials Engineering and Performance.

[22]  Milo S. P. Shaffer,et al.  Enhanced acoustic damping in flexible polyurethane foams filled with carbon nanotubes , 2009 .

[23]  X. Gong,et al.  Multifunctional polymer composite with excellent shear stiffening performance and magnetorheological effect , 2014 .

[24]  Gareth H. McKinley,et al.  The Dynamic Compressive Response of an Open-Cell Foam Impregnated With a Non-Newtonian Fluid , 2008 .

[25]  Shuhong Yu,et al.  A Flexible and Highly Pressure‐Sensitive Graphene–Polyurethane Sponge Based on Fractured Microstructure Design , 2013, Advanced materials.

[26]  P. Tan.  Ballistic protection performance of curved armor systems with or without debondings/delaminations , 2014 .

[27]  Lei Jiang,et al.  Bioinspired Multifunctional Foam with Self‐Cleaning and Oil/Water Separation , 2013 .

[28]  Jianping Gao,et al.  Cost-effective reduced graphene oxide-coated polyurethane sponge as a highly efficient and reusable oil-absorbent. , 2013, ACS applied materials & interfaces.

[29]  X. Gong,et al.  The role of shear in the transition from continuous shear thickening to discontinuous shear thickening , 2015 .

[30]  Chih-Feng Wang,et al.  Robust superhydrophobic/superoleophilic sponge for effective continuous absorption and expulsion of oil pollutants from water. , 2013, ACS applied materials & interfaces.

[31]  Jack E. Houston,et al.  Temperature dependent relaxation of a “solid–liquid” , 2009 .

[32]  Bucheng Li,et al.  Magnetic, durable, and superhydrophobic polyurethane@Fe3O4@SiO2@fluoropolymer sponges for selective oil absorption and oil/water separation. , 2015, ACS applied materials & interfaces.

[33]  Liyuan Sun,et al.  A novel carbon nanotubes reinforced superhydrophobic and superoleophilic polyurethane sponge for selective oil–water separation through a chemical fabrication , 2015 .