钢板基聚氨酯防护材料的耐冲蚀磨损性能研究  

Sand Erosion Resistance for Protective TPU Coating on Steel Substrate

作　　者：方梅[1] 李贵勋[2] 黄明 刘春太 张娜[1] Fang Mei;Li Guixun;Huang Ming;Liu Chuntai;Zhang Na(Key laboratory of Materials Processing and Mold, Zhengzhou University, Zhengzhou, Henan, 450002;Yellow River Institute of Hydraulic Research, Zhengzhou, Henan,450003)

机构地区：[1]材料成型及模具技术教育部重点实验室郑州大学,河南郑州450002 [2]黄河水利委员会黄河水利科学研究院,河南郑州450003

出　　处：《现代塑料加工应用》2019年第2期1-4,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金(11432003;51609097);中国博士后基金(2016M592305);河南省自然科学基金(162300410246)

摘　　要：研究了不同冲蚀颗粒粒径对不同厚度热塑性聚氨酯(TPU)冲蚀磨损性能的影响,分析了不同厚度TPU在不同粒径颗粒冲击下的失效机制,并测量了TPU在侵蚀过程中温度的变化。结果表明:以钢板为基底的TPU防护层,在两种粒径冲击下,TPU厚度为0.75 mm时其耐侵蚀性能均为最好;在颗粒的冲击下,TPU内部温度的聚积不可忽略,经拟合得到第1层表面温度在冲击力的作用下高达85℃。The effects of different erodent sizes and the thickness of thermoplastic polyurethane (TPU) on solid particle erosion resistance were examined. And the failure mechanism of TPU was investigated in different thickness when it was impinged with different size particles. Furthermore, the change of temperature for TPU during the sand erosion was measured. The results indicate that TPU with a thickness of 0-75 mm coating on a steel substrate has the most excellent sand erosion resistance under the impact of two particle sizes. Meanwhile, the internal temperature concentration of TPU material cannot be ignored, which was obtained by fitting that the surface temperature of TPU is up to 85 ℃.

关 键 词：聚氨酯 固体颗粒侵蚀 冲蚀磨损 粒径 温度变化 

分 类 号：TM315[电气工程—电机] TG174.4[金属学及工艺—金属表面处理]