分散性

CNTs were first pre-treated using acid solution (HNO3) to obtain CNTs functionalized with carboxylic groups. Subsequently, the stearyl alcohol was grafted onto CNT with the assistance of dehydrating agent, N,N'-dicyclohexyl-carbodiimide. Excellent dispersion in organic solvents such as acetone, THF, and chloroform was found for the modified CNTs (CNT-C18). In addition, the PBS/CNTs nanocomposites were then prepared through simple melt-blending. Mechanical properties, thermal behavior, conductivity of resultant polymer/CNT composites were investigated. The results show that excellent dispersion of nanotubes in the PBS matrices was achieved.

为了增加多壁奈米碳管在复合材料中的分散性，将碳管表面进行化学修饰，首先将多壁奈米碳管浸入HNO3溶液中，进行酸化，使碳管表面带有羧酸的官能基，然后再加入十八烷醇，在温和的条件下，藉由N，N'-二环己基碳二亚胺(N，N'-dicyclohexyl- carbodiimide，DCC)脱水剂脱水，使碳管和十八烷醇之间产生酯基的化学键结，改质后的碳管可以分散在acetone、THF、chloroform…等有机溶剂中，结果显示成功的利用DCC脱水剂完成碳管的改质。

Chapter 7 gives an introduction to Infra-Red Sensitive Phosphors, with emphasis on Double Activator Principle which is of great importance to Infra-Red Stimulable Electron Trapping Materials.

它具有单一相纯度、良好的晶化程度和化学稳定性，组成比较均匀并且接近化学计量比，粒度分布集中，分散性好，缺陷和杂质少等优点。

The results show that uniform CdS spheres with 500 nm can be synthesized with controlled concentration of PVP; the greater the concentration of PVP, the greater the diameter of particles, and the more homogeneous the particles; microspheres are composed of small substructural CdS crystallites, and the greater the polymer concentration, the smaller the diameter of substructural crystallites.

结果表明，控制高聚物的浓度可以制备得到直径在500nm的单分散硫化镉微球；高聚物浓度在一定范围内，微球的直径随浓度增大而增大，且分散性越好；微球是由硫化镉的微小单晶沉积而成的，随着高聚物的浓度增大，单晶的尺寸越小。

A kind of superplasticizer of sulfamic acid series is a new superplasticizer with good prospect, which can provide concrete high flowability good durability and low slump loss.

氨基磺酸系高效减水剂具有对水泥粒子的高度分散性，减水率高，混凝土的耐久性好，并具有控制坍落度损失的功能，是很有发展前途的一种新型高效减水剂。

Using CoCl2·6H2O,FeCl3·6H2O and NaOH as reactive materials,tetramethylammonium hydroxideN(CH34OH as dispersant, monodisperse CoFe2O4 nanocrystals was synthesized successfully by two-steps heated codeposition method.

6H2O，NaOH为原料，利用N(CH3)4OH作为改性剂，对CoFe2O4纳米颗粒进行原位表面改性，采用二次加热法，制备单分散性CoFe2O4纳米晶。

Using CoCl2·6H2O,FeCl3·6H2O and NaOH as reactive materials,tetramethylammonium hydroxideN(CH34OH as dispersant,monodisperse CoFe2O4 nanocrystals was synthesized successfully by two-steps heated codeposition method.

本文分别以CoCl2.6H2O，FeCl3.6H2O，NaOH为原料，利用N(CH3)4OH作为改性剂，对CoFe2O4纳米颗粒进行原位表面改性，采用二次加热法，制备单分散性CoFe2O4纳米晶。

Well dispersed platinum nanoparticles and those with special shapes were synthesized through electrochemical and thermochemical methods.

采用电化学方法、热化学方法在水相中制备了分散性良好的铂纳米粒子以及具有一定形貌的铂纳米粒子结构。

With titanyl sulphate and commercial urea as the raw material ,nanometer TiO2 is a material of environment,it with a close size distribution and fine dispersion was prepared by homogeneous precipitation.

本文以硫酸法钛白粉生产中产生的硫酸氧钛和工业品尿素为原料，采用均匀沉淀法制备了粒度分布窄，分散性好的纳米级TiO_2环境材料。

The formulations for the synthesis of alkyds resin were designed based on the molecular ratio of the phthalic anhydride and trimellitic anhydride.

以脂肪油、邻苯二甲酸酐、偏苯三酸酐和三羟甲基丙烷为主要原料合成了水分散性醇酸树脂。

Properties of fine tungsten powder and fine tungsten carbide powder from violet tungstic oxide are studied.The result shows that the process of violet tungstic oxide preparation is advanced and reasonab...

结果表明，紫钨制取工艺先进合理，由紫钨制得的钨粉、碳化钨粉细而均匀，分散性好，是制取高性能硬质合金的优质原料。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。