Study on the influences of temperature and salinity on ice adhesion
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摘要:
温度、盐度是影响冰黏附力的关键因素。利用可编程式高低温实验机,在不同温度、盐度下制静态淡水冰、含盐冰,并测量冰切向黏附力,对冰切向黏附力受温度影响的变化趋势、受盐度影响的原因进行了研究。结果表明:两种冰样的前期结冰黏附过程中,冰-基界面“类液层”起决定性作用。淡水冰在0~−11 ℃温度范围内,冰切向黏附力随温度降低线性增加,到达−11 ℃的温度临界值后,其增加速度随温度降低逐渐递减,并在−20 ℃后基本保持平稳。盐水冰-基界面形成有效黏附所需温度更低,切向黏附力较淡水冰更小,在1%~2.5%盐度的含盐区间内,冰切向黏附力主要受界面“冰盐”分布影响。结果为研究不同环境,特别是海洋低温条件下的结冰机理和防除冰方法研究提供了参考。
Abstract:Temperature and salinity are critical factors influencing ice adhesion strength. Utilizing a programmable high-low temperature test chamber, static freshwater ice and saline ice were prepared under varying temperature and salinity conditions, with tangential ice adhesion forces measured to investigate the temperature-dependent trends and salinity-influenced mechanisms. The results demonstrated that the quasi-liquid layer (QLL) at the ice-substrate interface played a decisive role in the initial ice adhesion process for both ice types. For freshwater ice, the tangential adhesion strength increased linearly as temperatures decreased from 0 ℃ to −11 ℃. Beyond this critical temperature threshold ( −11 ℃), the growth rate gradually decelerated with further cooling, stabilizing substantially below −20 ℃. Saline ice required lower temperatures to form effective interfacial adhesion, exhibiting weaker tangential adhesion compared with freshwater ice. Within the salinity range of 1%—2.5%, ice adhesion strength was predominantly governed by the interfacial ice-salt distribution. This study could provide theoretical and technical references for elucidating ice formation mechanisms and developing anti-/de-icing strategies under diverse environmental conditions, particularly in marine cryogenic environments.
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Key words:
- adhesion /
- fresh water ice /
- salt ice /
- liquid layer /
- ice salt
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表 1 不同温度下淡水冰黏附力系数
Table 1. Adhesion of fresh water ice at different temperature
kPa 实验
统计温度/℃ −5 −10 −15 −20 −25 −30 第1次 361.71 774.78 1032.54 1180.83 1086.78 1160.33 第2次 496.12 765.82 928.54 1154.46 1194.77 1108.68 第3次 411.03 809.61 980.79 1253.98 1157.59 1307.72 第4次 454.52 866.34 1057.42 1091.26 1133.56 1074.34 第5次 431.43 841.96 1037.02 994.23 1202.73 1194.77 均值 430.96 811.70 1007.62 1134.95 1155.09 1169.17 标准差 44.68 38.40 41.46 87.6 42.38 80.72 最大
偏差值69.27 54.64 79.08 138.32 68.31 138.55 最大
偏差率/%16 6.73 7.85 7.7 5.90 11.85 表 2 −12 ℃淡水冰黏附力
Table 2. −12 ℃ fresh water ice adhesion
kPa 第1次 第2次 第3次 第4次 第5次 均值 标准差 最大偏差值 最大偏差率/% 931.03 983.71 996.7 922.07 895.70 945.84 38.26 50.68 5.36 表 3 −30 ℃不同盐度下的含盐冰黏附力系数
Table 3. Salt water ice adhesion coefficient under different salinity at −30 ℃
kPa 实验统计 盐水浓度/% 1.0 1.5 2.0 2.5 第1次 420.38 374.68 500.10 496.67 第2次 346.19 409.48 661.82 558.32 第3次 390.67 312.9 478.30 423.22 第4次 404.41 381.27 486.51 608.08 第5次 465.27 425.26 714.57 425.85 均值 405.38 375.32 568.26 502.43 标准差 38.81 40.88 99.58 72.74 最大偏差值 59.89 62.42 146.31 105.65 最大偏差率/% 14.77 16.63 25.74 21.03 表 4 −25 ℃下2.0%浓度含盐冰黏附力系数
Table 4. Ice adhesion coefficient of 2.0% salt water at −25 ℃
kPa 第1次 第2次 第3次 第4次 第5次 均值 标准差 最大偏差值 最大偏差率/% 347.68 434.37 312.90 381.27 475.02 390.25 58.32 87.35 22.38 表 5 误差统计
Table 5. Error statistics
kPa 误差 t=−5 ℃ t=−10 ℃ t=−15 ℃ t=−20 ℃ t=−25 ℃ 摩擦力 4.976 4.976 4.976 4.976 4.976 拉力计 14.930 14.928 14.934 14.923 14.928 合计 19.906 19.904 19.911 19.899 19.904 -
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