聚合的

There will be some new development in the future, because the plastic industry is rather young: the first polymeric material is not older than hundred years, and the techniques to apply metals adhesively have developed in the late fifties of the 19th century, starting from the already known method for producing mirrors.

世界上第一种聚合材料的出现不过百年历史，塑料工业的发展方兴未艾，其未来将有更广阔的前景。从19世纪50年代末镜子的生产开始，将金属牢固地附着在聚合材料表面的技术由此发展起来。

PVA-2080 is one of the important dispersing agents to produce loose polyvinyl chlorid. At present KH-20 is mainly imported from Japan to take the place of the traditional gelatin to produce high quality PVC in our country. In order to solve this problem, we exploit PVA-2080 to replace the foreign products. The experiment includes two steps of polymerization and a process of partial alcohlysis. After a number of trials, we get a product of white particles.Its average degree of alcoholysis is 80.77% and t...

聚乙烯醇- 2 0 80 (PVA - 2 0 80 )是生产疏松型聚氯乙烯的重要分散剂之一目前，国内主要依靠进口日本的KH - 2 0以代替传统的明胶来生产高质量的PVC产品为了解决这一问题，作者开发了PVA - 2 0 80 ，以代替国外进口本试验经过两步聚合和部分醇解等过程，通过正交试验优化试验条件，得到了外观为白色粉末状颗粒、平均聚合度为 2 0 4 2、醇解度为 80 。77%的产品经小釜应用试验，效果比较理想

We also study characteristic index and its determination of complex flocculant, put forward the new concept of total basification degree and present the determined method of B〓.In this paper, the author studied and improved on the Ferron Timed Complex Colorimetry, put forward the determination principle and determined method of the improved Ferron Timed Complex Colorimetry, and determined successfully the iron and aluminum hydrolysis-polymerized species of FMA complex flocculation at the same time.

研究了复合絮凝剂的特性指标及其分析测定方法、复合絮凝剂的絮凝特性评价方法，提出了总碱化度作为复合絮凝剂特性指标的新概念，并给出了分析测定方法；研究改进了Ferron逐时配合比色法，提出了复合体系中铁铝水解聚合形态同时测定的测定原理及方法，成功地将其用于FMA中铁铝水解聚合形态的同时测定。

The experiments and preliminary analysis show that PEDOT electrocatalysis for catechol and p -dihydroxybenzene may come from ...

PEDOT膜中掺杂的阴离子对催化性能有重要的影响，而膜聚合电位对PEDOT膜修饰电极行为的影响则是由于膜电阻随膜聚合电位的变化所引起的。

And VTMS is added in late stage of polymerization, in this situation the system has the lowest coagulum. When the hydroxyl value of such polymer increases, the coagulum decreases; and solid content of such polymer increases, the coagulum increases greatly, so it is difficult to get higher solid content emulsion.

采用正交实验方法，通过对有机硅改性丙烯酸乳液聚合过程中凝聚物含量、乳液粘度影响的研究，确定的最佳的反应条件是：以SLS/OP为乳化剂、比例为4/6、用量为2％、丙烯酸单体的用量1.5％、反应温度为75℃、改性剂VTMS用量是1.5％、改性剂后加入方式下聚合反应过程中有最低的凝聚物含量。

They cationic monomer Acryloyloxyethyl ethyl trimethyl ammonium chloride and resource-rich, low price, low values of weathering burning coal as its main raw material, aqueous dispersion polymerization methods, through the weathered coal / cationic monomer in-situ polymerization in the international arena for the first time prepared by a high efficiency oil-bearing wastewater treatment agent; use of oil-field wastewater treatment, the waste slurry as raw material, has developed the world's first CWS dispersants and oil fields of the "three mining" using profile control plugging agent, in order to The high value of solid waste has opened up new avenues of applications; integration of related technologies, and open up for the oil field wastewater treatment, an annual output of 300 tons of sets of processes and devices for the first time realized the slop oil and drilling fluid back row of the industrialization of treatment .

他们以阳离子单体丙烯酰氧乙基三甲基氯化铵与资源丰富、价格低廉、燃烧值低的风化煤为主要原料，采用水介质分散聚合方法，通过风化煤/阳离子单体原位聚合技术，在国际上首次制备出高效含油废水处理剂；采用油田废水处理后的废弃物泥浆为原料，在国际上率先开发出水煤浆分散剂和油田"三采"用调剖堵水剂，为固体废弃物的高值化应用开辟了新途径；集成相关技术，开拓出针对油田废水处理、年产300吨的成套工艺和装置，首次实现了油田污油水和钻井返排液的工业化处理。

The substituted half-sandwich titaconece with bulky alkoxyl group [CpTiC1〓 or CpTi 〓] or indene ring can not be fluorinated by BF〓·Et〓O under the selected condition, but still coordinates with the BF〓, this coordination then enhances the steric effect that stabilizes the precursor and hinders the reduction of the Ti to the Ti species, reflected in the decrease in polymerization activity.

但是这个转化受主催化剂分子的空间位阻和聚合反应温度的影响，当主催化剂为大位阻的烷氧基取代茂钛络合物或茚钛络合物时，在一般的聚合温度下BF〓不能对它们进行氟化，但可以和其中的OR配位，这种配位进一步加剧了空间位阻，从而阻碍了活性中心的形成，导致催化活性的下降。

The α-helical structure of the globulin is an important factor to forming and stabilizing the protein emulsion. The particle size distribution of legumin and vicilin hydrolysates were measured by dynamic light scattering, the particle size of legumin hydrolysates was decreased at first then increased during the papain hydrolysis, but the vicilin hydrolysates decreased continuously, it demonstrated that the legumin hydrolysates might have a re-aggregation in the solution which the vicilin hydrolysates did not have.

采用动态激光光散射分析了水解产物的粒径分布，结果表明：随着水解的进行，11S球蛋白水解物在溶液中的粒径出现先减小后增加的趋势，而7S球蛋白水解物的粒径呈递减趋势，说明11S水解产物分子间发生了新的选择性定向和聚合，而7S水解物分子间未发生二次聚合。

By means of orthogonal testing and overall merit assessment,the influence of polymerization process of the multiple styrene/acrylic emulsion system,monomers for copoly meri.

通过正交实验和综合评分的方法，研究了多元苯丙乳液体系的聚合方式、共聚单体、软/硬单体配比、乳化剂用量、引发剂用量和聚合温度对乳液性能的影响，确定了制备苯丙乳液的最佳工艺参数，由其配制的水性防锈涂料性能优良。

Taiwan is situated in the convergent zone between the Eurasian and the Philippine Sea plates. The rate of plate convergence in this area is one of the highest in the world. Violent geological processes are striking this land; natural disasters, such as earthquake

台湾位处欧亚大陆板块与菲律宾海洋板块的聚合带上，为全球板块聚合作用最快速的地区之一，剧烈的地质作用冲击著这块土地，地震、山崩、土石流等自然灾害严重威胁著这块土地人民的生命及财产。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。