Q235钢表面PTFE涂层的冻粘试验

吉林大学学报(工学版) ›› 2004, Vol. ›› Issue (2): 272-276.

Q235钢表面PTFE涂层的冻粘试验

杨晓东¹, 尚广瑞¹, 金敬福²

1. 吉林工程技术师范学院, 吉林, 长春, 130052;
2. 吉林大学, 生物与农业工程学院, 吉林, 长春, 130022

收稿日期:2003-08-28 出版日期:2004-04-01
基金资助:
吉林省高等学校科研基金资助项目(吉教合字[01]第053号).

Freezing adhesion of Q235 steel sheet with PTFE coating to ice

YANG Xiao-dong¹, SHANG Guang-rui¹, JIN Jing-fu²

1. Jilin Teacher's Institute of Engineering and Technology, Changchun 130052, China;
2. College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China

Received:2003-08-28 Online:2004-04-01

摘要/Abstract

摘要： 采用自行设计的冻粘应力测试装置测定了在不同温度、不同含量的聚四氟乙烯(PTFE)涂层下,Q235钢表面的切向与法向冻粘强度。结果表明:PTFE颗粒涂层表面的切向与法向冻粘强度约为Q235钢的20%～50%;在喷涂PTFE的质量分数分别为30%、60%、80%、90%的涂层中,_ω(PTFE)=60%的涂层表面对冰的粘附强度最小;憎水材料PTFE对减小冻粘强度具有重要作用;材料表面的化学性质和接触面形貌是影响粘附强度的决定性因素。

关键词: Q235钢, PTFE颗粒涂层, 冻粘

Abstract: Adhesion of ice to surfaces creates problems for many industries, including aviation, hydropower, telecommunications, navigation, electrical distribution, and all forms of transportation. At present, ice removal techniques are both costly and time-consuming. In an effort to reduce the cost, time, and physical labor associated with ice removal, much research on ice adhesion has been done. Of the three methods--electrical, chemical, and mechanical, the search for a low adhesive coating or material has by far received the most attention of any method pursued for lowering ice's adhesive strength. The adhesive strength of the Q235 steel sheets with coatings of different content PTFE to ice were measured by self-designed and manufactured experiment apparatus.The results show that the Q235 steel sheet with PTFE particle coating has lower adhesive strengths than that without coating at any temperatures. The hydrophobic PTFE particle content has an important effect on adhesive value at freezing condition, and among the coatings with PTFE mass fraction of 30%,60%,80%,and 90%,the one with 60% mass fraction shows minimum adhesion.Air entrapment into ice to substrate interface and cohesive failure of the substrate coating produce major reduction in ice adhesion.The two main factors affecting the ice adhesion freezing strength are substrate material chemical property and surface microstructure or morphology.

Key words: Q235 steel, PTFE particle coating, freezing adhesion

中图分类号:

TG494

杨晓东, 尚广瑞, 金敬福. Q235钢表面PTFE涂层的冻粘试验[J]. 吉林大学学报(工学版), 2004, (2): 272-276.

YANG Xiao-dong, SHANG Guang-rui, JIN Jing-fu. Freezing adhesion of Q235 steel sheet with PTFE coating to ice[J]. 吉林大学学报(工学版), 2004, (2): 272-276.

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