التفاصيل البيبلوغرافية
| العنوان: |
耐磨防覆冰聚四氟乙烯表面设计与加工. (Chinese) |
| Alternate Title: |
Design and processing of wear-resistant and ice-resistant PTFE surface. (English) |
| المؤلفون: |
何志豪, 张柄桢, 潘维浩, 孙晶, 宋金龙 |
| المصدر: |
Acta Materiae Compositae Sinica; Oct2024, Vol. 41 Issue 10, p5161-5171, 11p |
| مصطلحات موضوعية: |
SUPERHYDROPHOBIC surfaces, LASER engraving, CONTACT angle, WEAR resistance, CLEANING equipment |
| Abstract (English): |
The icing on the surface of the silo of the ice jet cleaning equipment often causes the equipment to shutdown for maintenance, but how to reduce the icing adhesion on the silo surface is a difficulty of current research. In this work, CO2 laser was used to etch polytetrafluoroethylene (PTFE) to obtain a superhydrophobic surface, and a rhombus support rib array structure was designed to improve the wear resistance of the superhydrophobic PTFE surface. CO2 laser etching could form a multi-layer staggered stacked fiber structure on the PTFE surface, and there was no obvious change in the chemical composition of the surface after laser etching. The superhydrophobic PTFE surface with contact angle of 164° and rolling angle of 4° can be obtained at laser scanning line spacing of 50 μm, scanning speed of 300 mm/s, and laser power of 9 W. The designed rhombus support rib array structure with crest angle of 30°, length of side of 3 mm and rib width of 0.05 mm can effectively improve the wear resistance of superhydrophobic PTFE surface. Even after being rubbed by sandpaper for 6 m, the superhydrophobic PTFE surface with rhombus support rib array structure can still maintain excellent superhydrophobicity, and the icing adhesion of it is only 50% of that of ordinary PTFE surface. The wear-resistant and ice-resistant PTFE surface is expected to be used in ice jet cleaning equipment. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
冰射流清洗设备料仓表面的覆冰常造成设备停机维修, 但如何降低料仓表面的覆冰粘附力是目前研 究的难点. 本文采用 CO2 激光刻蚀聚四氟乙烯 (PTFE) 获得超疏水表面, 并设计了一种菱形支撑肋阵列结构 提高超疏水 PTFE 表面的耐磨性. CO2 激光刻蚀能在 PTFE 表面形成多层次交错堆叠纤维结构, 且激光刻蚀 后的表面化学成分无明显变化. 在 50 μm 激光扫描线间距, 300 mm/s 扫描速度和 9 W 激光功率下, 可获得 164°接触角, 4°滚动角的超疏水 PTFE 表面. 设计的 30°顶角角度, 3 mm 菱形边长和 0.05 mm 肋边宽度的菱 形支撑肋阵列结构可有效提高超疏水 PTFE 表面的耐磨性. 即使被砂纸摩擦 6 m 后, 具有菱形支撑肋阵列结 构的超疏水 PTFE 表面仍能保持良好的超疏水性, 且覆冰粘附力仅为普通 PTFE 表面的 50%. 本耐磨防覆冰 PTFE 表面有望应用于冰射流清洗设备. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |