层状润滑涂层的制备及防冰性能

Preparation of layered lubricating coating and its anti-icing property

[目的]防结冰是目前风力发电机设备领域亟待解决的问题。[方法]以聚二甲基硅氧烷(PDMS)、液体石蜡和Fe3O4为主要原料,采用旋涂法在普通玻璃表面制备了层状润滑涂层,研究了它的表面稳定性和防冰性能。[结果]这种层状润滑涂层在70℃高温蒸发或水流冲击7 d后,润滑液的质量损失仅为3%左右。在15次重复结冰实验中,旋涂10层所得涂层表面的冰附着强度只从2.41 kPa增大到3.55 kPa。水滴在该涂层表面凝结的时间为363 s,比普通玻璃表面的结冰时间(40 s)长得多。[结论]该层状润滑涂层具有优良的表面稳定性及抗冰耐久性。

[Introduction]Anti-icing is a pressing issue in a variety of equipment areas such as wind turbines.[Method]Layered lubricating coatings were prepared on common glass surfaces with polydimethylsiloxane(PDMS),liquid paraffin,and Fe3O4 as raw materials by spin coating technique.The surface stability and anti-icing property of the coatings were studied.[Result]These layered lubricating coatings lost only about 3%of their mass after 7 days of evaporation at 70℃ or being impacted by water flow.The adhesion strength of ice on the 10-layer coating was increased only from 2.41 kPa to 3.55 kPa after 15 cycles of icing test.The time for water droplets to condense on the surface of this coating was 363 seconds,significantly longer than the 40 seconds required for condensation on ordinary glass surface.[Conclusion]Layered lubricating coatings possess good surface stability and durability against icing.