不同冰点介质对冰黏附强度的影响  

Influence of media with different low freezing points on ice adhesion strength

作　　者：陈奕颖 金敬福[1] 丛茜 陈廷坤[1,2] 任露泉[2] CHEN Yi-ying;JIN Jing-fu;CONG Qian;CHEN Ting-kun;REN Lu-quan(College of Biological and Agricultural Engineering,Jilin University,Changchun 130022,China;Key Laboratory of Bionic Engineering,Ministry of Education,Jilin University,Changchun 130022,China;State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China)

机构地区：[1]吉林大学生物与农业工程学院,长春130022 [2]吉林大学工程仿生教育部重点实验室,长春130022 [3]吉林大学汽车仿真与控制国家重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2021年第5期1926-1932,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：吉林省教育厅项目(JJKH20211070KJ);吉林省科技厅项目(20200801049GH);国家自然科学基金项目(51775234).

摘　　要：在铝合金和聚甲基丙烯酸甲酯表面加工用于填充不同低冰点水溶液的凹坑,并测试冰在其表面的黏附强度。试验表明:界面具有相变温度梯度的试样使表面覆冰主动剥离脱落。测量凹坑内低冰点水溶液在冻结过程中产生的相变膨胀力变化曲线,对其进行函数拟合,结合有限元模拟分析基底表面具有相变温度梯度对冰黏附界面稳定性的影响。分析表明:低温环境下界面具有的相变温度梯度使冰黏附界面形成应力集中,破坏冰黏附界面的稳定性,并且相邻凹坑内低冰点水溶液相变产生的膨胀力改变冰黏附界面无凹坑区域的应力、应变,干扰无凹坑区域冰黏附界面的稳定性,进一步影响冰在材料表面的黏附稳定性。Based on the phase change expansion of the freezing process,the study proposed an anti-icing model. A gradient of the phase change temperature was established at the interface between ice and substrate to interfere with the stability of ice adhesion. Pits were processed on the surface of Aluminum alloy and Polymethyl methacrylate(PMMA)for filling solutions with different freezing points. Ant the ice adhesion strength on the substrate with the phase change gradient and the normal substrate were tested,respectively. The results showed that whether the substrate was Aluminum alloy or PMMA,the sample with the phase change gradient could cause the ice to peel off actively. The change curves of the swelling forces of the aqueous solutions in the pit during the freezing process were measured,and the curves were fitted with function. Combined with finite element simulation, the influence of the phase transition temperature gradient on the substrate surface on the ice adhesion interface stability was analyzed. The analysis showed that substrate with the phase transition temperature gradient in the low-temperature environment made the ice adhesion interface form stress concentration,which destroyed the ice adhesion interface stability. Additionally,the swelling force generated by the aqueous solution in the adjacent pits changed the stress and strain of the non-pit area of the ice adhesion interface,and the stability of the ice adhesion interface in the non-pit area was disturbed. And this would further affect the ice adhesion stability on the material surface.

关 键 词：工程仿生学 黏附界面 防除冰 界面稳定性 相变膨胀力 冰黏附强度 机理分析 

分 类 号：TB131[理学—物理] TB17[理学—应用物理]