乙烯

Study of PES-PAN blending membrane ;2. The blending membrane s of perfluorinated sulfonic resin with polyvinylidene fluoride were prepared by the method of solution casting.

为了降低质子交换膜的成本，选用聚偏氟乙烯和全氟磺酸树脂为原料，采用溶液-浇铸法制备了全氟磺酸树脂/聚偏氟乙烯的共混膜。

Thirdly, The preparation of 3-aryl-5-substituted-ethenyl isoxazoles and l-isoxazolyl-2-isoxazolinyl substituted-ethenes was developed through 1, 3-dipolar cycloaddition of nitrile oxides,α-alkylation reaction and another 1, 3-dipolar cycloaddition of nitrile oxides based on polystyrene-supported propargyl selenide.

三、从聚苯乙烯负载的炔丙基硒醚出发，经过腈氧化物的1，3-偶极环加成反应、α-烷基化反应和腈氧化物的1，3-偶极环加成反应固相分别合成了3-芳基5-取代--乙烯基异噁唑和1—异噁唑—2—异噁唑啉取代的-乙烯。

Secondly,UV spectrophotometry was adopted to research the combination action on SM_2 and SIZ with MAA and 4-Vp.The combination action of functional monomer with template molecules were produced in the results. Then,the prediction imprinting principle of SM_2 and SIZ were given. The diagrams of infrared spectrum were analysed in MAA and 4-Vp and IMPs of SM_2. It was discoved that the absorbability peak of C=C function group in the IMPs were turn to be very low ,but the function group of carboxylic acid and pyridyl in the IMPs were no evidence change, and the condition was created in the molecular recognition of MIPs. Thermal Analysis was adopted to research IMPs ,in which ,a better thermal stability and its decompose temperature were showed in the results.

其次，本文利用紫外分光光度法研究磺胺二甲嘧啶和磺胺异噁唑与甲基丙烯酸或4-乙烯基吡啶的结合作用，结果表明，溶液中的功能单体与模板分子之间产生了结合作用，并预测磺胺二甲嘧啶和磺胺异噁唑印迹机理；分别分析了功能单体甲基丙烯酸、4-乙烯基吡啶、磺胺二甲嘧啶和磺胺异噁唑分子印迹聚合物的红外谱图，经过对比发现制得的印迹聚合物中C=C双键峰很小，并且功能键羧酸键和吡啶氮没有明显变化，这为聚合物特异识别特性创造了条件；利用综合热分析仪，对分子印迹聚合物进行综合热分析，结果表明分子印迹聚合物具有较好的热稳定性，分解温度也较高。

The first step in the degradation is most probably the classical ester scission reaction to give a carboxylic acid and olefinic end groups. Further ester scission on the adjacent ester groups of carboxylic acid and olefinic molecular chains can then lead to the formation of lower weight pyrolytic products, such as: CH〓=CHOCOPhCOOCH=CH〓、CH〓=CHOCOPhCOOH and HOOCPhCOOH, and they can pyrolyze continually to produce substrate pyrolytic compounds, such as: HOOCPhCOCH〓、PhCOOH、PhH、PhCOCH〓 and CO、CO〓. At the same time, a corsslinking cyclization reaction occurred of the formation of the gas products during the degradation of PET.

断裂大分子链端邻近羰基和乙烯基的酯键持续断裂，不断地形成小分子裂解产物，如：CH〓=CHOCOPhCOOCH=CH〓、CH〓=CHOCOPhCOOH以及HOOCPhCOOH，这些产物还会进一步裂解成分子量更低的小分子裂解产物，如：HOOCPhCOCH〓、PhCOOH、PhH、PhCOCH〓以及CO、CO〓等，与此同时，一部分乙烯基酯端基的大分子链碎片会发生支化而相互连接，再经&链脱离&和环化反应形成难燃的交联产物。

Four hemicyanine derivatives,-N-(4-sulfobutyl)-4-[2-(4-N,N-dimethylamino-phenyl) etheny1] pyridinium (P1),-N-(4-sulfobutyl)-4-[2-(4-N,N-dimethylaminophenyl)-1,3-buteny1] pyridinium (P2),-N-(4-sulfobutyl)-4-2-(4-N,N-dimethylaminophenyl) ethenyll quinolinium (Q1) and-N-(4-sulfobutyl)-4-

合成了具有不同共轭链长度的吡啶盐类及喹啉盐类半菁染料-N-（4-磺酸丁基）-4-[2-4-N，N-二甲基氨基苯基）乙烯基]吡啶鎓盐(P1、-N-（4-磺酸丁基）-4-[2-4-N，N-二甲基氨基苯基）丁二烯基]吡啶鎓盐(P2、-N-（4-磺酸丁基）-4-[2-(4-N，N-二甲基氨基苯基)乙烯基]哇琳鎓盐(Q1)以及-N-（4-磺酸丁基）-4-[2-4-N，N-二甲基氨基苯基丁二烯基]喹啉鎓盐(Q2)。研究了它们的光物理性质，并将它们用作TiO2纳米晶电极的光敏化剂引入光电化学电池。

The manufacturing technology of cold stretched and hot shrinkable PTFE products will find wide applications for PTFE material.

冷拉伸、热收缩聚四氟乙烯制品成型技术为聚四氟乙烯材料的进一步推广应用拓展了空间。

Ammonium tristyrylphenol polyoxyethylene ether sulfate was synthesized from tristyrylphenol polyoxyethy-lene ether and sulfamic acid using urea as catalyst.

以三苯乙烯基苯酚聚氧乙烯醚和氨基磺酸为原料，合成了三苯乙烯基苯酚聚氧乙烯醚硫酸酯铵盐。

In this paper, the orthogonal experimental analysis method is used to study on the effects of molar ratio of the unsaturated vinyl monomers, with carboxylic groups or sulphonic groups or polyoxyethylene side chain groups,etc., and the effects of the mean degree of polymerization in PEO side chains.

根据聚羧酸系高效减水剂的结构特点，采用正交试验分析法，分别研究了带羧基、磺酸基、聚氧化乙烯链酯基等活性基团的不饱和单体的物质的量之比及聚氧化乙烯链的聚合度等因素对聚羧酸系减水剂性能的影响，从而得出合成聚羧酸系高性能减水剂的一种最佳配方，并对试制产品进行了性能试验。

By way of orthogonal testing analysis,study was carried out on effects of molar ratio of unsaturated monomers with carboxylic groups,sulphonic groups,polyoxyethylene side chain groups and mean degree of polymerization of polyoxyethylene side chain groups on performance of polycarboxylic series of water reducer.

采用正交试验分析法，研究了带活性基团羧基、磺酸基、聚氧化乙烯链基等不饱和单体的摩尔比及聚氧化乙烯链的聚合度等对聚羧酸系减水剂性能的影响，提出一种合成聚羧酸系高性能减水剂的最佳配方。

Volatile organic substances containing chlorine: tetracarp, carbon tetrachloride , trichloroethylene , chloroform, tetrachloroethane and etc.

挥发性含氯有机物：四氯乙烯、四氯化碳、三氯乙烯、氯仿、四氯乙烷等。

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。