Experiments indicate that the micropore membrane made by the optimal process and recipe of solution has porosity > 75 % , average pore size < 1m , the similar structure to ideal model 实验结果表明,利用优化工艺所制得pvdf微孔膜孔隙率在75以上,平均孔径在1 m以下,透湿量较高,形态结构接近于理想模型的微孔膜。
Updated patented technology of nuclear industry : inorganic membrane preparing process is adopted together with double - face and micropore ceramic board sintered with silicon carbide or alumina , which has a good resisting performance against friction and corrosion 核工业先进的专利技术:应用无机膜制备工艺,并采用耐磨耐腐性能良好的碳化硅或氧化铝烧结成双面微孔陶瓷板。
The adsorption theory of micropore inorganic materials was studied to direct the preparation of tsous by organic / inorganic nano composite materials . the microstructure of tsous was established based on the theory that the micropore is filled during the process of micropore materials adsorption 研究了微孔无机材料的吸附理论,提出微孔材料的吸附过程相当于工质材料对微孔的充填,其孔体积均为吸附空间。
Via analysis of reservoir , typical gas and tight zone , it has an obvious character that the content of cement controls reservoir property , pore texture growing , definitely effects logging responsibility and micropore controls hydrocarbon content 经对试气层段与典型气层和致密层分析,认为该区有一个明显特征:岩石胶结物的质量分数控制着储集层物性及孔隙结构的发育程度并对测井响应有一定影响,微孔喉制约着储层含气性。
The ultrastructure of the merozoites of eimeria tenellawas observed and discribed . the pellicle consist of two layer membranes , the outer membrane was a continous covering enclosing the whole merozoites , while the inner pellicular complex is interrupted at the anterior and the micropore , and thicken to form the polar ring and micropore . there are 24 microtubules under the pellicle of the merozoite which originated from the polar ring , all of them are connected with the polar ring , and extend alongside the inner pellicular complex to the middle of the merozoite . the head of the merozoite consists of a conoid , an apical vesicule and polar ring . the conoid is a hollow truncated cone . the conoid and spical vesicule can stretch and contract . there are three or more rhoptry and a lot of micronemes . the nucleus has nucleolus . and two layer membranes 利用透射电镜对柔嫩艾美耳球虫裂殖子的超微结构进行了观察描述.柔嫩艾美耳球虫裂殖子的表膜由外膜和内膜复合体两层组成,外膜连续,内膜复合体在头部断开形成极环,在其它部位断开形成微孔;裂殖子的膜下微管24根,起始于极环,向后延伸至细胞核处;裂殖子的头部由顶泡、锥体和极环组成,锥体和顶泡可以伸缩;柔嫩艾美耳球虫裂殖子棒状体3个以上,微线数量很多,二者都由电子致密的结构组成;细胞核位于裂殖子的中后部,外被双层膜,有电子致密的核仁和染色质
Aim : to analyze the mechanism , thermadynamic theoretical basis , dynamic mechanism and influencing factors of thermally induced phase separation ( tips ) in order to completely grasp the factors affecting the size , distribution and form of pores , so that the adjusted range of pore can be widened and the preparation of porous membrane can be repeated and controlled . methods : considering from the structural characteristics of tissue engineered materials , the methods of preparing porous membrane using tips technique , the hermadynamic theoretical basis , dynamic mechanism and influencing factors were analyzed , the problems and investigative directions in the future were also analyzed . tips technique is a process of phase separation of polymer homogenous solution under quenching , and it is suitable for diameter and structural form of the micropore materials prepared using tips are closely correlated with the kind and dispensing proportion of polymer attrnuant , polymer concentration and polymer molecular mass , etc . conducted , including determination of polymer - solvent system phase diagram , study of form and appearance of porous membrane of different thickness , study of form and appearance of porous membrane prepared with systems of different x , which is the parameter of polymer - solvent interaction 目的:分析热致相分离成膜过程的机理、热力学理论基础、动力学机制以及影响因素,以便充分掌握影响孔度大小、分布、形态的因素,使孔度调控范围得以拓宽,使多孔膜的制备能重复可控.方法:从组织工程材料结构特点出发,分析热致相分离聚合物多孔膜的制备方法及该法成膜的热力学理论基础、动力学机制以及影响因素.并分析实验中存在的问题及今后的研究方向.结果:以热致相分离法可制备聚合物多孔膜.热致相分离法制备多孔膜是高聚物均相溶液在淬冷条件下发生相分离的过程,它适用于上临界共溶温度型聚合物一稀释剂二元体系.热致相分离法成膜的过程,可以认为是旋节线机理占主导地位.热致相分离法制备的微孔材料,其孔隙率、孔径大小、结构形态与聚合物稀释剂的种类、组成配比、聚合物浓度、聚合物分子量等因素密切相关.结论:可采用热致相分离技术制备多孔膜,通过改变不同的成膜条件可获得一系列不同孔径尺寸和孔径分布的多孔膜材料.对热致相分离成膜过程中聚合物-溶剂体系的相图测定,不同厚度的多孔膜形貌研究,不同x (聚合物-溶剂相互作用参数)体系所制备的多孔膜形貌等需深人研究
The result is that this gas pool has simple structure , only forms a little nose - like structure at the district of fenghuangshan ; this pool belongs to delta front sub - facies sedimentary model , the underwater distributary channel and mouth bar is the better sedimentary microfacies ; the physical property of the reservoir is poor , the type of pore of the reservoir rock mostly are intergranular pore , intergranular solution hole and little are intercrystalline micropore ; the influential factors of pore structure and physical property are lithofacies , lithologic character and diagenesis ; the off - take potentia of all the testing well are deadly shortness , the wells have the worth of industrial recovery only under the condition of going through sand fracturing , and in the early of binging into production , the oil and sheath pressure drop rapidly , the production of the well drop rapidly 研究认为该气藏构造简单,只在凤凰山形成了一个小型的鼻状构造;属于三角洲前缘亚相沉积模式,水下分流河道和河口坝是有利的沉积微相;储层物性差,储层岩石的孔隙类型主要有粒间孔、粒间(内)溶孔及少量晶间微孔;影响蓬莱镇组气藏储层孔隙结构及储集性的因素有岩相、岩性条件及成岩作用;所有测试井自然产能都极低,必须经加砂压裂后才有工业开采价值,且投产初期,油套压下降较快,气井产量下降迅速。
According to the microstructure , the tsous are consist of two sections : the adsorbent of micropore inorganic materials and pcms . tsous with the maximum pcm content and high stability may be prepared by making good use of the nano effect and surface effect of organic / inorganic nano composite materials . according to the microstructure , the saturated adsorption amount of micropore inorganic material is 73 . 47 % 应用该模型制备自调温单元,可利用材料的纳米尺寸效应和表面效应,在纳米孔道的内壁上形成吸附力的叠加,使微孔内部具有强的吸附势,可得到相变工质材料含量最大且性能稳定的自调温单元;该模型中微孔无机材料对相变工质材料的理论饱和吸附量为73 . 47 。