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8452150 
Journal Article 
Anti-Explosion Effect of Polyurea Coated Steel Composite Structures 
Wang, Q; Jia, Z; Zhao, P; Wang, Z; Zhang, P; Xu, Y 
2020 
34 
6 
Chinese 
In order to investigate the antiknock performance of polyurea coated steel composite structures and the energy absorption mechanism of polyurea coatings, the 40 and 60 g TNT explosion loading tests were carried out for the uncoated, equal-face coating and back-explosion coating structures with equal surface density and other steel plate thicknesses. Then the polyurea coatings' effects on the antiknock performance of composite structures and their protective mechanism were analyzed in comparison of the failure modes of composite plates. It was found that the anti-explosion performance decreases with the thickening polyurea coating for the composite structure with uniform surface density, while improves under the same steel plate thickness conditions. In addition, coating on the rear surface proves to be the best. It was also shown that the antiknock performance of polyurea-coated steel composite structures is closely related to the characteristics of constitutive dispersion, interface dispersion and softening effect of the polyurea protective coating. Copyright ©2020 Chinese Journal of High Pressure Physics. All rights reserved. 
Decreasing hardening; Polyuria coating; Softening effect; Tangent modulus