高分子

The conformational variation of a polymer chain terminally attached to a surface at different temperatures was studied by using Monte Carlo and simulated annealing methods.The model polymer chain was a self-avoiding walk with non-bonded nearest-neighbor interactions on a simple cubic lattice.

借Monte Carlo和模拟退火方法研究了端基附壁高分子尾形链在不同温度下的形态变化，链的模型采用有最近邻相互吸引作用的自避行走。

Using the bond-fluctuation-model and vacancy-diffusion-algorithm,the microphase structure, segment profile and structure factor of molten symmetrical AB diblock copolymer confined between two impermeable plate surfaces are simulated by Monte Carlo method based on simple cubic lattice.

采用改进的键长涨落空穴扩散算法对平板狭缝中的对称两嵌段共聚高分子熔体的微相分离形态、密度分布以及结构因子进行了MonteCarlo模拟。

The interactions between the two streams of flow undoubtedly have an influence on the morphology of the solid state.

在这一过程中熔体的流动，尤其是在型腔内的流动影响着高分子材料的凝聚态结构。

Damage mechanics is a new branch of solid mechanics that has come into being during the past two decades. The theory deals with solid-state physics, strength of materials and continue mechanics as a whole. Making up for the deficiency of microexamination and fracture mechanics, it is getting more and more useful for the calculation of life expectancy of materials, thus facing a bright future as far as its infinite use are concerned.

损伤力学是近二十年才开始形成和发展的一门新的固体力学分支，它是将固体物理学、材料强度理论和连续介质力学统一起来进行研究的理论，弥补了微观研究和断裂力学研究的不足，越来越多地应用于航天航空、高温高压热力设备寿命评估和混凝土、复合材料、高分子材料质量评估计算，是一门有着无限广阔用途的新学科。

In this article,polyferric silicate sulfate was prepared by using soluble glass as a raw material and arsenic-containing wastewater was flocculated by it.

本文以水玻璃为原料，合成了无机高分子聚合硅酸铁，并用它对此类含砷废水进行了混凝处理。

It has been proved that it was an amorphous plastics with high glass temperature,soluble in some solvents at room temperature and the polymer was also an intermediate product of cross-linked copolymer and grafted copolymer.

结果表明，这系列聚合物是具有较高的玻璃化温度的可溶性无规共聚物。聚合物含有不饱和双键结构，可作为交联聚合物、接枝聚合物及其它特种高分子材料的中间体。

Through lots of tests, the new technology of preparing the polymeric ferric aluminum silicate sulfate by using the waste-acid of Ti02-industriy and the coal fly ash has been designed. The highest Al-acid stripping rate can be achieved by the waste sulfate acid under boiling degree for 1. 5h when the mass ratio between NaCl and Coal Fly ash is 0. 05:1, as well as that between Coal Fly ash and Waste Acid ratio is 1:10. By means of the oxidation-polymerized reaction under 40-50*C and normal pressure, using NaNCkas catalyst and air as oxidation, the polymeric ferric aluminum sulfate can be obtained. The poly-silicic acid is polymerized with soluble glass in the optimum conditions of pH=5-6 and the concentration of Si02 is about 3%. The inorganic high molecule coagulant of PFASS is synthesized with the poly-silicic acid into the solution of polymeric ferric aluminum sulfate.

本论文通过大量的试验，研究开发出了用粉煤灰及钛白废酸制取聚合硫酸硅酸铁铝的新工艺，其最佳工艺条件为：于沸点温度，以NaCl为助溶剂(NaCl与粉煤灰质量比为0.05：1)，以钛白废酸浸取粉煤灰(固液比为1：10)中的铝1.5小时，最大浸取率可达40％；经过滤洗涤后，调节滤液pH至2.0左右，以NANO_2为催化剂(NaNO_2用量为滤液中FeSO_4·7H_2O量的3％)，空气为氧化剂，于40-50℃进行常压催化氧化反应，制取聚合硫酸铁铝，催化氧化时间为2小时；将工业水玻璃稀释至3％左右，调节其pH于5-6，室温下制备活性聚硅酸；将活性聚硅酸与聚合硫酸铁铝按照一定比例复合，经熟化，即制得新型无机高分子混凝剂PFASS。

In the last part of the thesis, synthesis of mesostructured titania has been explored with a selfassembly of hydrophilic polymer and anionic surfactant used as template, along with titanium alkoxide as inorganic precusor. The product was proved to have mesostructure and the fiber and spherical morphology is favored.

本文最后一部分首次探索以亲水性高分子和阴离子表面活性剂形成的自组装体为模板、烷氧基钛为无机原料合成介相结构氧化钛；产物具有介相结构，其颗粒形貌为纤维和圆球的混合物。

Then the dilated spherical molecules form triangle spaces to let air go through the dressing.

吸液后的高分子膨胀成球状，并形成众多三角形空间达到透气的效果。

Cheong Tai÷§Anping Hengshui City, Hebei Province are through Food and Drug Administration approved the production of medical equipment enterprises, major products include: medium and high grade cervical care, medical external fixation brace, splint bone polymer, medical crutches, all kinds of medical traction frame, medical traction with fixed belt, a variety of products such as waist circumferenceü·.

安平县昌泰医疗器械厂是通过河北省衡水市食品药品监督管理局批准生产医疗器械的企业，主要产品有：中高档颈托、医用外固定支具、高分子骨夹板、医用拐杖、各种医用牵引架、医用牵引带、固定带、各种腰围腰封等产品。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。