Experimental Study on Explosion Resistance of Polyurea Coated Q235 Steel Plate
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摘要:为了研究聚脲涂覆钢板在爆炸载荷下的防护能力和机理，通过试验研究了不同涂覆位置及厚度的聚脲涂层对不同厚度的Q235钢板抗爆性能的影响，并利用应力波传播规律揭示了不同涂覆模式下复合靶板的破坏机理。结果表明：在本文试验条件下，采用背面涂覆时，能有效提高钢板的抗爆性能，且聚脲涂覆厚度越厚，效果越好。正面涂覆时，对3.5mm的钢板的抗爆性能有所提高，但效果不明显；对3mm的钢板却会削弱其抗爆性能，加剧破坏程度。双面涂覆时，随着钢板及聚脲厚度组合的不同，抗爆性能呈现差异性变化。
Abstract:In order to study the protective ability and mechanism of polyurea coated steel plate under explosion load, the effects of coating positions and thickness on the explosion resistance of Q235 steel plate with different thickness were studied through experiments, and the failure mechanism of composite target plate was revealed by using the law of stress wave propagation. The results show that under the test conditions in this study, the explosion resistance of steel plate is effectively improved when the polyurea is coated on the back, and the thicker the polyurea coating thickness is, the better the effect is. When polyurea is coated on the front, the explosion resistance of 3.5mm steel plate is improved slightly, while for the 3mm steel plate, the explosion resistance is weakened and damaged to a greater extent. When polyurea is coated on both sides, it also shows different effects with the different thickness combination of steel plate and polyurea.
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