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中文摘要：
采用气流挟沙喷射法对改性环氧树脂材料进行固体颗粒冲蚀磨损试验，考查冲蚀速度和角度对其冲蚀磨损的影响，并探讨了其冲蚀磨损机理，对比了相同冲蚀条件下几种材料冲蚀率的大小。实验结果表明，改性环氧树脂材料冲蚀率与冲蚀速度近似呈线性关系；在不同的冲蚀速度下，改性环氧树脂材料的冲蚀率在45＆#176;冲蚀时最大，表现出半塑性材料的冲蚀特征；在相同的冲蚀条件下，改性环氧树脂材料冲蚀率是对比材料（如 M30砂浆、水泥石等）冲蚀率的1／16-1／4，适合用作强风沙流环境下混凝土桥梁墩身的防护材料；冲蚀形貌扫描电子显微镜照片表明，冲蚀能量的法向分量使材料表面产生裂纹和破碎，而其切向分量使材料表面产生切削。
英文摘要：
Experiments were carried out to study the effects of impingement angle and particle velocity on the solid particle erosion behaviour of modified epoxy resin by sandblast method,and the mechanism of erosion wear was discussed,in addition,the erosion rates for several different materials were compared. Experimental results show that the relationship between erosion rates of modified epoxy resin and wind-sand flow velocity approximates linear relationship. The erosion rates for modified epoxy resin are highest at 45＆#176; impingement angle under different velocity,which follows semi-ductile material erosion laws. The erosion rate of modified epoxy resin is approximately 1/16 -1/4 of the reference materials （such as M30 mortar, cement stone etc.） at the same condition. Therefore,the modified epoxy resin can be used protection material for concrete bridge pier under gobi wind-sand flow environment. The morphologies scanning electron microscope photoes show that the normal component of erosion energy makes to produce cracks and debris,and the tangential component to produce surface cutting.
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