1.The contents of triethanolamine (TEA) were analyzed by GC with internal standard as the quantitative analysis method,HP-INNOWAX(crosslinked polyethlene glycol) capillary column as the stationary phase,hydrogen flame ionization detector (FID) as detector,and two grade program rising temperature as oven temperature.
以 HP- INNOWAX(Crosslinked Polyethlene Glycol交链聚乙二醇 )毛细管柱为固定相 ,氢火焰离子化检测器 (FID) ,二阶程序升温 ,碳酸乙烯酯为内标气相色谱法分析工业三乙醇胺的含量。
2.The contents of ethylene carbonate were analyzed by GC with HP-INNOWAX(crosslinked polyethylene glycol) capillary column as the stationary phase, hydrogen flame ionizatio detector(FID) as detector,two grade program rise temperature as oven temperature. The interstandard method was used in the quantitative analysis.
气相色谱法分析碳酸乙烯酯的含量 ,以 HP- INNOWAX(Crosslinked Polyethylene Glycol)毛细管柱为固定相 ,氢火焰离子化检测器 (FID) ,二阶程序升温 ,内标法定量。
3.PCL obtained from butyl glycol (BG) system and diethylene glycol (DEG) system were compared with that from ethylene glycol (EG) system, which indicates that increasing chain length of glycol benefits the formation of bifunctional active species in the polymerizaton.
对比乙二醇(EG)、丁二醇(BG)和二甘醇(DEG)体系所得PCL聚合结果,发现增大二醇的链长利于双稀土金属活性中心的形成。
4.Chiral quaternary ammonium salts were synthesized from cinchonine in Cinchona alkaloids using chloromethylated polystyrene-polyethylene glycol, diethylene glycol, triethylene glycol and glycol as polymer-supported phase transfer catalysts, Finsl products were characterized by FTIR, Elemental analysis, Scanning electron microscopy, X-ray photoelectron spectroscopy (XPS).
摘要以金鸡纳生物碱中的辛可宁为原料，氯甲基化聚苯乙烯－聚乙二醇、一缩二乙二醇、二缩三乙二醇、乙二醇等为载体合成了几种聚合物负载的手性季铵盐，并对它们的结构用红外光谱、元素分析、扫描电镜和X射线光电子能谱等测试手段进行了表徵。
5.b When the concentration of glycol is about 6 0 percent, the frictional properties of Si3N4-high speed steel pairs is better,but the wear rates of Si3N4 ball decteases with the increasing ofconcentration of glycol, the reasons are probably that a complicated frictional chemical rcactiontakes place between glycol liquid and fresh ceramic surfaces produces by friction and a wear-resisting layer is form ed on the ceram ic surface.
浓度约为60％（wt）的乙二醇水溶液润滑时，Si3N4－高速钢摩擦副的摩擦特性较好，Si3N4球的磨损量随着乙二醇浓度的增加而下降，这很可能是由于乙二醇溶液与摩擦产生的新鲜陶瓷表面发生了复杂的摩擦化学作用而形成了一种耐?
6.The composite catalyst was applied to the acetalation of benzaldehyde with ethylene glycol. Thus,with n(benzaldehyde)∶n(ethylene glycol)=1∶1.8,w(catalyst)=6% of feed stock,cyclohexane as water entrainer and reacting for 1 h,benzaldehyde ethylene glycol acetal can be obtained in 82.41% yield.
将该催化剂用于合成苯甲醛乙二醇缩醛,考察了物料量比、反应时间、催化剂用量对苯甲醛与乙二醇反应的影响规律,最佳反应条件为n(苯甲醛)∶n(乙二醇)=1∶1.8、催化剂用量为反应物总质量的6%、环己烷为带水剂、反应时间1.0 h时,苯甲醛乙二醇缩醛的收率达82.41%。
7.The phase separation behavior of different nonsolvent additives (NSA: ethanol, glycol, ethylene glycol methyl ether, diethylene glycol, etc.)
本文以聚醚砜酮为膜材料研究了不同体系的相分离行为和不同的铸膜液体系对中空纤维膜结构和性能的影响。
8.The purified 1,2-propylene glycol can meet the standard of pharmaceutical grade, with purity of 1,2-propylene glycol being greater than 99.5%, color(APHA) smaller than 10#, water content in 1,2- propylene glycol smaller than 0.2%.
经催化反应精制得到的1,2-丙二醇达到了医药级标准要求,纯度≥99.5%; 色度≤10#(APHA);
9.The relationship of the hydroxy value of the polyester with the molar ratio of the diethylene glycol(DEG) to the adipic acid(AA) were studied. The effections of the molar ratio of the diethylene glycol to the adipic acid, the reaction tempereture, the methods of synthesis and the catalyst on the variation of the acid value in synthesis were researched. The mothod and conditions to prepare the polydiethylene glycol adipate were established.
用已二酸（Adipicacid，AA）和二甘醇（Diethyleneglycol，DEG）为原料合成了聚已二酸二甘醇酯．研究了DEG／AA的摩尔比与聚酯羟值之间的关系，探讨了DEG／AA的摩尔比、反应温度、催化剂、合成方法对聚酯合成过程中酸值变化的影响，从而确立了合成一定特征的聚已二酸二甘醇酯的方法和条件．
10.Poly (butylene succinate) ,linear aliphatic polyesters—poly (butylenes adipate), poly (glycol adipate), poly (glycol succinate), poly (butylene succinate -co- ethylene glycol)s and PBS/PET blends with different compositions were synthesized.
合成了聚丁二酸丁二醇酯(PBS)以及一系列线性脂肪族聚合物——聚己二酸丁二醇酯(PBA)、聚己二酸乙二醇嵌段共聚物(PGA)、聚丁二酸乙二醇嵌段共聚物合成(PGS)、聚丁二酸丁二醇酯与聚乙二醇嵌段共聚物(PBS-co-PEG),制备了不同组分的PBS/PET共混物。
