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1)  water vapor permeability
水蒸气透过系数
2)  water vapor permeability(WVP)
水蒸气透过系数(WVP)
3)  water vapor permeability coefficient
水蒸气透湿系数
1.
The polystyrene foam plastics is one of the most widespread materials of applying in external insulation outside wall system,water vapor permeability coefficient affects its heat conduction performance and aging resistance performance,but test methods of the coefficient in its product standards aren t suitable for the test and the conclusion evaluation of this material.
聚苯乙烯泡沫塑料是外墙外保温系统应用最广泛的材料之一,水蒸气透湿系数影响其导热性能和耐老化性能,而其产品标准中所采用的检验方法不适合于该材料的检测和结论评定。
4)  permeation of water vapor
水蒸气透过
5)  water vapor permeability
水蒸气透过率
1.
The results showed that temperature of freezing storage had influences on the zein films, which led to the changes of mechanical properties, equilibrium moisture content (EMC), water vapor permeability (WVP).
结果表明:蛋白膜的机械特性、平衡水分含量和水蒸气透过率随冻藏温度的变化而发生变化。
2.
The effect of zein films and zein films plasticized with 3 % oleic acid(OA-zein films) on biodegradability and water vapor permeability(WVP) is researched.
对玉米醇溶蛋白(zein)与3%油酸增塑的玉米醇溶蛋白(OA-zein)膜的降解性能和水蒸气透过率进行了研究,实验结果表明:zein膜和OA-zein膜具有良好的抗酸性,但在pH10以上时开始发生降解,蛋白酶水解实验表明了24h内蛋白膜不被酶水解。
3.
Properties tensile strength,water vapor permeability,gas permeability and folded trace of the film were analyzed, which shows that they are related to the contents of chitosan and stearic acid and the condition when films were prepared.
对膜的性能如抗拉强度、伸长率、水蒸气透过率、气体透过率、折痕等进行了分析。
6)  vapo(u)r transmission
水蒸气透过量
补充资料:水蒸气透过量
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CAS号:

性质:又称水蒸气透过量或透湿量。塑料薄膜或片材两侧存在水蒸气压力差时,在一定温度下透过的水蒸气量以g/(m2·24h)表示。用杯式法测量。装好试样的透湿杯放在一定条件的环境中,如相对湿度为90%±2%,温度28℃,进行水汽透过。杯中有干燥剂,可以认为水蒸气压力为零。经过一定时间,干燥剂吸收透过的水蒸气而增重,根据增重的量,水蒸气透过率WVT=24×△m/A·△t,式中△m是T时间内的质量增重,g;△t是质量增量稳定后,两次测重间隔时间,h;A是试样透过水蒸气面积,m2。

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