查询词典 nonsolvent

Therefore, it is very important to investigate the role of nonsolvent additives in membrane formation by immersion precipitation both in the investigation on the mechanism of membrane formation and in the preparation of the commercial membrane.

为适应不同膜过程，需要使用非溶剂添加剂调整铸膜液的配方，获得理想的膜结构和性能。研究NSA对浸入凝胶成膜过程的影响，在理论和实践两方面都具有重要意义。

It is concluded that two factors (convection evaporation and solvent/nonsolvent exchange rate) are important in controlling membrane morphology for gas separation.

结果表明，对流蒸发和凝胶过程溶剂/非溶剂的交换速率对形成非对称结构的高渗透性能气体分离膜有着重要的影响。

Apparent viscosity,non-Newtonian index and structural viscosity index were obtained as a function of nonsolvent contents and temperatures.

摘 要：研究了聚丙烯腈/二甲基亚砜/水三元混合纺丝原液在不同的含水量和温度下的流变性能，获得了表观黏度、非牛顿指数和结构黏度指数对于含水量和温度的依赖关系。

The effects of polymer concentration, nonsolvent, additive, dry journey and Al_2O_3 nanoparticle on membrane structure and property were mainly studied.

着重分析了聚合物浓度、非溶剂、添加剂、干程及纳米Al_2O_3粒子等成膜因素对复合膜结构和性能的影响。

The thermodynamic properties of the casting solution were investigated by using the Flory-Huggins theory. A new simple method to determine the nonsolvent/polymer interaction parameter from the intrinsic viscosity was developed.

本文采用Flory-Huggins理论研究NSA对铸膜液热力学性质的影响，发展了一种从特性粘数推算非溶剂和聚合物之间的相互作用参数x〓的简便方法。

Phase separation (nonsolvent induced phase separation,spreading solution on water surface and so on),melt stretch,thermally induced phase separation are included.

重点介绍了聚4–甲基–1–戊烯微孔膜各种制备方法的原理、过程、影响因素和膜的结构特点。

Methods: The two methods of nonsolvent process and solvent process were adopted to prepare oxamyl. Oxamyl was prepared in water in the first one and in acetone in the second. By the comparisons of productive cost, production purity, operation safety and equipment cost, a proper process for preparation oxamyl was adopted.

制取杀线威有两种不同方法，即非溶剂法和溶剂法，前者采用水为反应介质，后者采用丙酮为反应介质，从产品制造成本，产品纯度，操作环境的安全性以及生产设备投资等方面进行比较，确定可行的合成方法。

It was found that the phase separation behavior of the PANCMA/solvent/nonsolvent systems with and without additive such as PVAL or PVP agrees with the LCP correlation.

研究发现，在水相中马来酸酐极易水解成马来酸，共聚物为丙烯腈/马来酸共聚物，粘均分子量可在10～40×10〓g/mol之间，马来酸的含量为0～15mol％，适合用于分离膜的制备及表面改性。

It was discovered that the lower polymer concentration, appropriate nonsolvent content, small molecular weight PVP additive and litter longer dry journey were propitious to obtain the porosity and high flux separation membrane.

聚合物浓度低、添加适量的非溶剂、以小分子量PVP为添加剂及干程稍长都将有助于得到多孔性、高通量的分离膜。

The nonsolvent process of the preparation for oxamyl is suitable for mass production due to its low production cost, high purity, no methyl isocyante remains, easy operation and lower equipment cost.

水相法合成杀线威不需催化剂和溶剂，产品制造成本低，纯度高，反应结束异氰酸甲酯无残留，出料环境好，操作方便，设备投资少，是一种适合大生产的工艺方法

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。