
[流] 润湿角
The results show that when the wetting angle factor does not change for a given metal, the quantity of grains increases with increase of cooling rate and has a linear relation.
结果表明,金属确定后,当润湿角因子不变,晶粒数随着冷却速度的增大而增大,基本呈线性正比关系;
When a liquid droplet is set on a smooth solid horizontal surface, it may spread out over substrate and the contact Angle will approach zero if complete wetting takes place.
当液滴是建立在坚实光滑水平面上,它可能分布在衬底和接触角将接近零,如果完全润湿发生。
The mechanism of synergistic action of tributyl phosphate was discussed through testing of surface tension, contact angle and wetting time.
通过表面张力、接触角、润湿时间等物理量的测定,讨论了磷酸三丁酯增效作用的机理;
A dustproof method, adding dust-sticking bar to infusion, was stu***d. This method can reduce contact Angle and shorten wetting time.
研究了煤层注水中添加粘尘棒溶液降低接触角、缩短接触润湿时间的除尘方法。
The results of the undisturbed soil showed decrease in both cohesion and internal friction angle occurred by wetting, while little change in the strength parameters was observed for the remolded soil.
结果显示未扰动土样的粘合力和内摩擦角在湿润化后都下降了,而所观察到的重塑土的弹度参数只有少许变化。
润湿角(Wetting Angle),又称接触角(Contact Angle),是描述液体在固体表面铺展能力的关键参数,其定义为液体与固体接触时,液-气界面切线与固-液界面之间的夹角。该角度通过实验测量(例如光学投影法或称重法),可定量反映液体对固体的润湿性。例如,水在洁净玻璃上的润湿角接近0°,表明完全润湿;而在疏水的荷叶表面可超过150°,呈现“超疏水”特性。
根据润湿角大小,材料表面可分为三类:
该参数在工业领域有广泛应用,例如:
权威定义可参考国际纯粹与应用化学联合会(IUPAC)对接触角的标准化描述,或美国国家标准技术研究院(NIST)发布的表面润湿性测量协议。
Wetting Angle(润湿角/接触角) 是描述液体在固体表面润湿行为的关键参数,其定义和解析如下:
若需进一步了解具体应用案例(如焊接标准),可参考、5等来源的完整内容。
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