Protection of steel railcar tank containing liquid chlorine from high speed impact by using polyhedral oligomeric silsesquioxane-enhanced polyurea

Abstract The ballistic resistance and self-sealing behavior of polyhedral oligomeric silsesquioxane (POSS)-enhanced polyurea (PU) coated TC-128 steel plates subjected to high speed impact were investigated experimentally and numerically. Both experimental and numerical results showed that the POSS-enhanced PU exhibited strong self-sealing properties under high-speed impact and could dramatically reduce leaking of toxic liquid from a hole in the railcar tank. Experimental results and simulation results agreed well for the ballistic limit of POSS-enhanced PU coated and uncoated TC-128 steel plates, with an average error of 5.72%. In terms of the size of hole left after the impact test, although the simulation result for the uncoated TC-128 steel plate was almost identical to the experimental result, the simulation result for the POSS-enhanced PU coating layer was doubled compared to the experimental result, probably due to the mass erosion effect. The POSS-enhanced PU material may serve as a class of effective protective coating layers to reduce the leaking of toxic chemicals from steel railcar tanks.

[1]  S. Dey,et al.  The effect of target strength on the perforation of steel plates using three different projectile nose shapes , 2004 .

[2]  J. Runt,et al.  Microstructure and Segmental Dynamics of Polyurea under Uniaxial Deformation , 2012 .

[3]  W. C. Bell,et al.  Blast-wave impact-mitigation capability of polyurea when used as helmet suspension-pad material , 2010 .

[4]  T. Børvik,et al.  Perforation resistance of five different high-strength steel plates subjected to small-arms projectiles , 2009 .

[5]  T. Børvik,et al.  A computational model of viscoplasticity and ductile damage for impact and penetration , 2001 .

[6]  A. Shukla,et al.  Effect of polyurea coatings on the response of curved E-Glass/Vinyl ester composite panels to underwater explosive loading , 2013 .

[7]  Ted Belytschko,et al.  Penetration of DH-36 steel plates with and without polyurea coating , 2010 .

[8]  R. Ogden.  Large deformation isotropic elasticity – on the correlation of theory and experiment for incompressible rubberlike solids , 1972, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[9]  Seshu Dharmavaram,et al.  Comparison of six widely‐used dense gas dispersion models for three recent chlorine railcar accidents , 2008 .

[10]  S. Nemat-Nasser,et al.  Investigation of effect of polyurea on response of steel plates to impulsive loads in direct pressure-pulse experiments , 2010 .

[11]  C. M. Roland,et al.  High strain rate mechanical behavior of polyurea , 2007 .

[12]  S. Nemat-Nasser,et al.  Experimental investigation of response of monolithic and bilayer plates to impulsive loads , 2010 .

[13]  S. Nemat-Nasser,et al.  Numerical modeling of response of monolithic and bilayer plates to impulsive loads , 2010 .

[14]  M. Urban,et al.  Conductivity model and photoacoustic FT-IR surface depth profiling of heterogeneous polymers , 2003 .

[15]  M. Grujicic,et al.  Computational Investigation of Impact Energy Absorption Capability of Polyurea Coatings via Deformation-Induced Glass Transition , 2010 .

[16]  M. Grujicic,et al.  Molecular- and domain-level microstructure-dependent material model for nano-segregated polyurea , 2013 .

[17]  Tuan Ngo,et al.  Polyurea coated composite aluminium plates subjected to high velocity projectile impact , 2013 .

[18]  C. Hayhurst,et al.  Cylindrically symmetric SPH simulations of hypervelocity impacts on thin plates , 1997 .

[19]  Mathieu Ichard,et al.  CFD model simulation of dispersion from chlorine railcar releases in industrial and urban areas , 2009 .

[20]  W. C. Bell,et al.  Molecular-level simulations of shock generation and propagation in polyurea , 2011 .

[21]  Mary C. Boyce,et al.  Large deformation rate-dependent stress–strain behavior of polyurea and polyurethanes , 2006 .

[22]  Werner Goldsmith,et al.  The mechanics of penetration of projectiles into targets , 1978 .

[23]  Daniel Fragiadakis,et al.  Elastomer-steel laminate armor , 2010 .