gas permeability

The high gas permeability of PMSP results primary from substantial gas solubility and diffusivity, which appears to be due to, in turn, to a large excess free volume in the unrelaxed ( Iangmuir) domains of this glassy polymer.

PTMSP的高透气性主要来源于极高的对气体溶解度及高扩散系数，而这是因为在这种玻璃态聚合物中，有大量处于非松弛区域的自由体积。

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After one year in 5% MgCl 2 solution the threshold of stress ratio of beforehand loading for gas permeability is 0.2 lower than in the seawater.

经5%MgCl2溶液腐蚀1年后的试样，其气体渗透系数的预置应力比阈值较同条件下人工海水腐蚀的试样至少小0.2。

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Moreover, cause the good gas permeability and selectivity of polyimide gas separation membranes, they have potential to apply to biomedical material.

此外，聚酰亚胺在气体分离膜等领域的优越表现，使聚酰亚胺具有作为生物医用材料的潜力。

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One of the main methods to test the gas permeability is using partial pressure difference.

用压差法测试塑料薄膜的透气性，是一个长期使用的主流测试方法。

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Studies on Morphological Structure and Gas Permeability of Graded Density Skinned Asymmetric BCA Membranes

梯度密度皮层不对称BCA膜的形态结构及其透气性的研究

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Application of Technology of Data Fitting in Test of Gas Permeability

数据拟合技术在透气性测试方面的应用

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The research on the longitudinal direction gas permeability of bamboo was measured and analyzed with the relevant theory and research approaches of permeability of wood. The results indicated that the pretreatment methods and M.C.

参照木材流体渗透特性相关理论和研究方法，对大型丛生竹种&龙竹竹材的纵向气体渗透性进行了测定和分析，结果表明预处理方法和含水率对竹材纵向渗透性有显著影响。

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Tear strength and tensile strength of PE film will decline with increasing of content of filling, but moisture coefficient and gas permeability will increase.

随着填料含量的增加，聚乙烯薄膜的撕裂强度和拉伸强度随之下降。而透湿系数和透气性能随之增加。

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He structure and properties of ethyl cellulose liquid crystal, and low molecular liquid crystal composite membranes were studied and the gas permeability was measured.

应用偏光显微镜、扫描电子显微镜、DSC以及测定氧氮渗透性，对乙基纤维素液晶溶液和低分子液晶共混膜在电场下取向膜和非取向膜的结构和性能进行研究，结果表明；

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The influence of confining pressure change and coal cleat on gas permeability is studied by experiments.

本文介绍了钏路煤层及相关割理系统的特性,通过试验研究了围压变化和煤层割理对气体渗透性的影响.

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The obvious slippage effect for gas flow has been found due to the low gas permeability, and the effect of coal matrix shrinkage on the permeability is also indispensable.

低渗透气藏中的气体渗流具有明显的滑脱效应，同时煤基质收缩效应对煤层渗透率的影响也是不容忽视的。

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Gas flow equation in porous media with a slippage effect was presented, combining with molecular diffusion theory. It is a theoretical foundation for further study on permeable theory, reservoir engineering, and performance analysis in low gas permeability reservoirs.

在考虑了气体渗流的特点后，结合分子扩散理论得到了考虑滑脱效应的气体渗流速度方程，为进一步开展低渗透气藏渗流理论研究，油藏工程研究和动态分析建立了基础。

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