查询词典 polymer

It is very difficult to eliminate these influence factors completely by conventional treatment. Surface properties and surface treatment of ultrafine red phosphorus and MMT and their interface properties with polymer matrices were studied in this thesis. The results were characterized by GC, FTIR, XRD, DTA, TG, XPS, UV, SEM, TEM and other physical and chemical methods. The main contents are as following: 1. The study of factors influencing ultrafine red phosphorus's invariability and phosphine liberation indicated red phosphorus undergone oxidation and dismutation reaction in air, and trace ion of iron, copper and nickel fastened water absorption and oxidation, in which the effect of copper ion was the most, while aluminium and zinc ion could slow down red phosphorus'oxidation, and silver ion had the best effect on red phosphorus moisture absorption. Inhibitors such as aluminium hydroxide, magnesium hydroxide, organic phenol and ferrous potassuim cyanide had a good effect on reducing red phosphorus moisture absorption and restraining phosphine liberation.

本文围绕纳微米材料的表面处理及其在高聚物基体中的应用这一主题，系统地研究了超细红磷和蒙脱土两种常见材料的表面特性、表面处理方法及其与高聚物基体的界面特性，通过气相色谱、红外光谱、X射线衍射、差热、热重、X射线光电子能谱仪、紫外光谱、扫描电镜、透射电镜等现代分析仪器以及其它物理、化学方法对实验结果进行了表征和分析，全文主要内容如下： 1、对影响超细红磷安定性的因素以及磷化氢的缓释研究表明：红磷在空气中发生缓慢氧化、歧化反应，微量的铜、铁、镍等金属离子增加了它的吸水和氧化速度，其中铜离子的作用最为明显，而铝、锌等离子减慢了红磷的氧化速度，银离子对减少红磷的吸湿性效果最好。

It is that:(1) the related compounds in Metronidazole Buccal Tablets prepared by Chongqing Medical College can be tested by determining (321nm) the total peak area of the impurities;(2) The related compounds in Metronidazole Disodium Phosphate for Injection prepared by Chongqing Medical College can be test by determining (254nm) the total peak area of the impurities and the peak area of the largest impurity;(3) Ceftriaxone polymer in Ceftriaxone Sodium for Injection prepared by Chongqing Keru Pharmacy Co.

结果如下：①用HPLC一UV法，在321nm处检测，用归一化法计算，控制各杂质峰面积的和，可检查重庆医科大学的注射用甲硝吟磷酸二钠中的有关物质：②用HPLC一UV法，在254nm处检测，控制杂质峰面积的和及控制最大杂质峰面积，可对重庆科瑞制药股份有限公司的注射用头饱曲松钠中的有关物质实施控制；③用HPLC一Uv法，在254nm处检测，按外标法计算，可检查注射用头抱曲松钠中的聚合物；④用紫外分光光度法，在277nm波长处测定吸收度，按C6H9N303的吸收系数为377计算每片标示百分含量，可测定重庆医科大学的甲硝哇口颊片的含量均匀度；⑤用紫外分光光度法，在277run波长处分别测定释放溶液20min、50min和90min的吸收度，按甲硝哇(C6H剥303)的吸收系数为377计算释放度，可检查重庆医科大学的甲硝哇口颊片的释放度。

The influence of the calcinating temperature and polymer dispersant on the size and morphology of MoSa nanocrystals were investigated.

采用沉淀法合成了不同形貌的MoS_2纳米微晶，考查了煅烧温度、高分子分散剂对MOS_2纳米微晶尺寸和形貌的影响。

Polymer alloy is a kind of special composite whose matrix phase and dispersed phase are all polymers.

聚合物合金材料是一类基体和分散相均为聚合物的特殊复合材料。

This technique reveals the dispersed polymer-rich phase as bright, while the continuous asphaltene-rich phase remains dark.

而饱含连续的asphaltene的阶段依然是黑暗，这个技术显露了将被分散的饱含聚合物的阶段作为明亮的。

Especially the most commonly used methods,such as coupling reagent,surfactant and polymer coating methods were introduced in detail.On these basis,the problems existed were put forwarded and the necessity of interface compatibility improvement,the uniform dispersedness of nano-particles in base material and stability control were pointed out.At the same time,further research direction was also proposed.

未经表面处理的纳米TiO2颗粒表面还具有亲水性，不能很好地分散在有机基质中，这大大降低了超细颗粒的实际应用效果；同时在有机高分子树脂中难以均匀分散，界面上会出现空隙，当空气中的水分进入空隙中就会引起界面高聚物的降解、脆化，导致材料性能下降。

Surface modification of nanoparticle is a general approach to prepare nanocomposite with good dispersion of nanoparticles in polymer matrix.

为制备分散均匀良好的复合材料，可藉由奈米无机物的表面改质，使其可在有机相高分子材料中分散均匀。

In addition to studying the dispersion of particles in polymeric matrix,many works focused on the effect of fillers on the phase separation in polymer blends.

除了研究粒子在聚合物中的分散外，关于粒子对聚合物共混物的相分离影响也做了大量工作。

It was observed that surface modified Al 3 has better dispersion and adhesion in polymer matrix,and thus the flame retardancy and tensile properties of the nanocomposites were improved.

结果表明：采用钛酸酯偶联剂对粉体进行表面改性可有效改善其在树脂中的分散与结合情况，复合材料阻燃级别提高到UL94V 1级，拉伸性能得到改善。

The applied effect of nanometer material mainly depend on surface molecule design of nano-powder material and its dispersion degree in matrix, i. e., how to disperse nano-particles into polymer matrix on nano-scale level.

因此，纳米材料的应用功效主要取决于纳米粉体材料的表面分子设计（即与基体材料的相容性问题）及其在基体材料中的分散度，也就是如何将纳米粒子以纳米尺度分散于高分子基体中。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。