聚乙烯

At the same time from the process of alcoholysis it reviewed the alcoholysis process and equipment research and application statusthe of polyvinyl alcohol , and offered constructive opinions to the development of China's Polyvinyl Alcohol Industry .

同时从醇解过程着手简述了聚乙烯醇解工艺和醇解设备的研究和应用状况，并对我国聚乙烯醇行业的发展提出建设性的意见。

Antiphase evaporation transonic method and high speed agitation method was adopt to prepare semustine PVP magnetic liposome.

加入聚乙烯吡咯烷酮作为磁性粒子包裹剂制备水基磁流体，采用反相蒸发超声法加高速搅拌制备司莫司汀聚乙烯吡咯烷酮磁性脂质体。

Emphasis was placed on CB-polymer interaction adjustment in order to control dispersion of carbon black aggregates in polymer matrix and obtain technical data for designing and manufacturing PTC products of practical values.

本论文在中山大学材料科学研究所有关工作的基础上，着重从聚合物基PTC材料的组成和加工工艺的角度，以炭黑填充单一低密度聚乙烯为参照体系，通过调节炭黑-聚合物基体之间的界面相互作用、控制炭黑的分散程度与分布状态，进而研究炭黑填充低密度聚乙烯/乙烯-乙酸乙烯酯共混物基PTC型复合材料，力图改善上述不足，为更好地了解这类PTC材料的结构-加工-性能之间的关系，设计和制造具有实际应用价值的PTC制品提供科学依据。

The variations of oxygen-containing functional groups in carbon black surface (［O ZJY〗CO］mainly) were the main factors influencing on surface and interface properties of carbon black,which could adjust the CB—LDPE interface interactions, and the n result in the change of morphology of carbon black dispersed in LDPE matrix.

正是由于炭黑表面性质的这种改变，从而调节了炭黑-低密度聚乙烯的界面相互作用，导致炭黑在聚乙烯基体中的分散形态发生了相应的变化。

Through single factor experiment, we educed that the best condition of dissolvable and bulgy capability of Polyvinyl alcohol-chitosan hydrogel is n: n 6:1, a volume concentration of crosslinker of 0.05%, and reaction time 9h.

通过单因素实验，得出了聚乙烯醇／壳聚糖凝胶具有最佳溶胀性能时的条件：聚乙烯醇与壳聚糖的摩尔比为6：1，交联剂戊二醛的体积分数为0.05%，反应时间9h。

The main object of this research is to investigate synthesis of Cu23Cl Cu and CuO nanoparticles through electrospinning and heat-treated method The research is mainly focused on preparative parameter and the change of heat-treated temperature to form the nanoparticles inlaid in silicon fibers the shape and color change are dicussed First of all to prepare the Polyvinyl butyral and silica dioxide complex nanofiber by electrospinning and then to investigate different heat-treated temperature and reactive time to being an influence on the products The results detected by SEM XRD TEM EDS FTIR combined sol-gel process and electrospinning can prepare Polyvinyl butyral and silica complex nanofiber The experimental result is found when heat-treated temperature is 100~4750C it can produce Cu23Cl nanoparticles; Above 4750C~ 4900C it can produce Cu nanoparticles; Above 450~7000C it can produce CuO nanoparticles And the viscosity is lain between 20~40cp and the sol-gel process time is 3hr it can produce the thinner fibers The average diameter of the fibers are 107 88±21 01nm;Due to the nanoparticles inlaid in the silica fibers the thinner fibers can be inlaid the smaller nanoparticles so this is the result that the experiment is expected To calcine the complex fibers is to produce surface silica fibers contain Cu23Cl Cu and CuO nanoparticles due to surface plasma resonance it make the color of the fibers become yellowish green from light white green turn into the red nuclear finally As the experimental result to utilize sol-gel process combine electrospinning can produce porous silica fibers contain Cu23Cl Cu and CuO nanoparticles

本研究旨在探讨「利用放电纺丝和热处理法来合成Cu23Cl、Cu和CuO奈米粒」之研究，实验著重在制备参数与热处理温度变化对所形成的奈米粒镶嵌在二氧化矽纤维中的形态与颜色变化探讨。首先，利用放电纺丝法制备出聚乙烯醇缩丁醛及二氧化矽之奈米纤维，比较不同的热处理温度与反应时间的改变对产物生成产生影响，进而研究不同热处理温度和时间对生成奈米粒的影响。产物经由SEM、XRD、TEM、EDS和FTIR等仪器分析结果显示，结合溶胶-凝胶法(sol-gel process)和放电纺丝法可产生聚乙烯醇缩丁醛及二氧化矽复合奈米纤维。实验结果发现，若热处理温度在100~4750C下可得到Cu23Cl奈米粒，475~4900C 可得Cu奈米粒，450~7000C以上可得 CuO奈米粒。而黏度介於20~40cp间和溶胶-凝胶时间为3hr时，可产生直径比较细的纤维，纤维直径为107 88±21 01nm；且由於奈米金属颗粒镶嵌在二氧化矽纤维中，直径比较细的纤维，可以得到比较小的奈米金属颗粒，这与实验预期相符。而锻烧此复合物产生多孔的二氧化矽纤维并包含Cu23Cl、Cu和CuO奈米微粒时，由於表面电浆子共震关系，而使纤维颜色由淡白黄绿色变成黄绿色，再变红褐色。由实验结果得知，利用溶胶-凝胶法(sol-gel process)结合放电纺丝法和不同热处理温度，可产生Cu23Cl、Cu和CuO奈米粒镶嵌在二氧化矽纤维。

Polyethylene (PE100)aspect and so on tubing in construction design thoery and construction technology has obtained the very big development and the consummation.And accumulated the rich expexience,urged the polyethylene tabing to ocapy the quite impoxtant position in the construction for the drainage charnel preject in And forms one kind of irresistible development tendency.

聚乙烯（PE100）管材在建筑中的设计理论和施工技术等方面取得了很大的发展和完善，并积累了丰富的实践经验，促使聚乙烯管材在建筑给排水管道工程中占据了相当重要的位置，并形成一种势不可挡的发展趋势。

And accumulated the rich expexience,urged the polyethylene tabing to ocapy the quite impoxtant position in the construction for the drainage charnel preject in And forms one kind of irresistible development tendency.

PE100管是采用先进的生产工艺和技术，通过热挤塑而摘要：聚乙烯（PE100）管材在建筑中的设计理论和施工技术等方面取得了很大的发展和完善，并积累了丰富的实践经验，促使聚乙烯管材在建筑给排水管道中占据了相当重要的位置，并形成一种势不可挡的发展趋势。

We also produce compensational cable with PE insulation or XLPE insulation if needed

还可根据需要提供聚乙烯绝缘、交联聚乙烯绝缘补偿电缆

Based on above calculation and prediction, an interaction model of polyethylene and NR was suggested.

本工作首先对橡胶/聚乙烯共混体系的相容性进行了计算，推测聚乙烯的非晶部分和橡胶间有一定的互容性，提出了橡胶和聚乙烯相互作用模型。

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。