1) free volume theory
自由体积理论
1.
Free volume theory was applied to the diffusion mechanism of drug through semi crystalline ethylene vinyl acetate (EVA) copolymer.
本文将自由体积理论应用于ＥＶＡ基质型药物扩散控制释药体系 ,阐明了小分子药物在半结晶ＥＶＡ聚合物中的扩散系数随共聚物组成的变化规律 。
2.
A mathematical model is proposed for predicting small molecule solvent diffusion coefficients in amorphous glassy polymers, based on free volume theory that is suitable for rubbery polymers, and with the consideration of the plasticization effect induced by the penetrant.
以自由体积理论为基础 ,提出改良的玻璃态高分子中溶剂扩散系数的数学模型 。
3.
The express of activity coefficient 1n for liquid ternary metal solution is derived from thefree volume theory and new generation solution model, the activity coefficients of component i in iron - basedsolution are calculated at 1873 K.
利用自由体积理论和新一代几何模型，建立了三元金属熔体活度系数１ｎ的模型表达式，计算出１８７３Ｋ温度条件下铁基熔体中组元的活度系数，并将模型计算结果与文献精选数据进行比较，表明活度系数的模型计算结果与文献精选数据相当吻合。
2) free-volume theory
自由体积理论
1.
Vrentas and Duda proposed a model based on the free-volume theory to predict diffusion coefficients of low molecular weight solvent in polymeric materials.
Vrentas-Duda模型以自由体积理论为基础,所有参数不需扩散实验测量,由溶剂和高分子的分子性质独立确定,可用于预测高分子聚合物中低相对分子质量溶剂扩散系数。
2.
The free-volume theory was applied to simulate the dependence of viscosity on temperature for bagasse Kraft black liquor at low solids concentrations.
利用聚合物自由体积理论模拟了蔗渣浆低浓黑液粘度对温度的依赖性的数学模型, 最终得出黑液多聚物粘度与温度的相关式:)]/(exp[011TTBA-=h。
3.
At the same time,the research explained the above relation by free-volume theory from the aspect of molecular structure.
研究证实,橡胶填充油的组成与它的玻璃化温度存在一定的相关性:未分馏橡胶填充油的玻璃化温度,介于其饱和烃与芳香烃馏分各自的玻璃化温度之间;同时从分子结构角度用自由体积理论阐释了上述关系,目前有关橡胶填充油的玻璃化温度尚未见报道。
3) the modified free volume theory
修正的自由体积理论
4) the free volume theory
自由容积理论
1.
An analytic equation of state of fcc argon has been derived based on the free volume theory (FVT) and the analytic mean field approach (AMFP) theory with exp-6 potential.
本文针对简单流体及固体的解析状态方程进行研究，在Ross变分微扰理论基础上结合解析径向分布函数表达式及分子间相互作用的势能模型建立了几个简单流体的解析状态方程，并根据自由容积理论和平均场近似建立了一个exp-6势简单固体解析状态方程。
5) free-volume
自由体积
1.
Many experimental results have shown that the positron annihilation technique is an advanced technique for the test and characterization of the polymer microstructure, such as the free-volume of polymers.
实验结果证明,正电子湮没技术是一种先进的材料微观结构—自由体积的探测和表征技术。
2.
It is observed that the average size of free-volume holes generally remains constant,and the hole concentration and the width of hole radius distribution decrease with the increase in radiation dose.
测量了高强度聚苯乙烯（ＨＩＰＳ）的正电子寿命谱随γ辐照剂量的变化，观察到自由体积孔洞的平均半径随辐照剂量的增加而基本不变，且自由体积孔洞的浓度和半径分布宽度随辐照剂量的增加而减小。
3.
This paper explained the diffusion of migratory substances from crystalline polyolefins from microcosmic view according to Vrentas-Duda free-volume theory,discussed the effect of temperature,density of polyolefins,molecular structure of migratory substances and swelling on diffusion coeff.
根据Vrentas-Duda自由体积理论,从"微观"角度解释了渗透质在结晶聚烯烃中的扩散。
6) Free volume
自由体积
1.
The results indicate that the discrete shear bands are formed around the indent and the local free volume is increased in the bulk metallic glass by deformation.
结果表明:在压痕周围形成离散的剪切带,形变引起了块状非晶合金局部自由体积增加。
2.
Positron annihilation lifetime spectroscopy(PALS) was used to investigate the free volume properties of PA6/clay nanocomposites in the temperature range from 10 K to 290 K below their glass transitions.
正电子湮没寿命的连续谱分析还表明,纳米粘土的含量和温度对自由体积分布有重要影响。
3.
Effects of toughening agent and temperature on the free volume and mechanical properties were studied by positron annihilation lifetime spectroscopy(PALS) and dynamic mechanical analysis(DMA) for a serious of epoxy resin samples with different toughening agent content(W/W).
用正电子湮没方法(PALS)和动态力学分析(DMA)方法研究了增韧剂和温度对环氧树脂的自由体积和力学性能的影响。
补充资料：混合体积理论
混合体积理论
mixed-volume theory
混合体积理论!m放ed刃确圈陀山阳口;eMe二aH，以06砖Mo。代oP“”] 凸体理论的一个分支，研究凸体线性组合问题中出现的泛函(见集合的加法(addi石on of sets)). Eucljd空间R”中凸体戈的具有正的组合系数的线性组合艺:二1又K的体积V是关于又，，…，又，的。次齐次多项式: F}部凡]一溶、，、;，砚。、…、*)系数K...，假定关于下标的置换是对称的，记为V(风一“，凡.)，因为它们仅依赖于凸体凡.，…，凡，.这些系数称为是凸体凡、，…，凡。的混合体积(m砍司词unl荟). 该理论的意义在于混合体积这一概念的广泛性:将V(K，K，，…，K。一t)中的K，，…，K。一、换成具体的凸体，可得到有关体K的种种性质.包括:其体积，其表面积，其主曲率的初等对称函数的曲面积分(在C’光滑体的情形下)，及其向i维平面(O<王
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参考词条