醚

Polyether modified polysiloxane defoaming agent s which was prepared by using hydrogenous polysiloxane and polyether as startintg materials, has good properties.

在聚硅氧烷链段上引入聚醚链段而得到的聚醚改性聚硅氧烷消泡剂是一种性能优良的消泡剂。

The optimal conditions through testing of defoaming performance and foam suppressing performance are:reaction temperature at 100 ℃;for 10 h;the mass ratio of polyether to hydrogenous silicone oil is 15∶1 and the dosage of catalyst is 0.2%.

聚醚改性聚硅氧烷消泡剂是将聚醚和有机硅消泡剂两者的优点有机结合起来的一种新型高效消泡剂，由于其消泡效力强，且其耐热性、抗剪切性及耐酸碱盐性能好，加之还具有无毒无味、贮藏稳定及使用方便等优点，因而被广泛用在各种场合，特别是用于许多苛刻条件下的消泡，比如纺织品高温染色工艺、发酵工艺中的消泡[1]，但是此类消泡剂在我国还处于研制阶段，很

Toluenesulfonyl chloride: Tosyl chloride is corrosive, vesicant, lachrymator, moisture-sensitive and caustic (mainly due to the liberation of HCl on contact with water).

甲苯磺醚氯：对甲苯磺醚氯是有腐蚀性的，发泡的，催泪瓦斯，易受潮的和有侵蚀性的(主要是由于它跟水接触时会释放出HCl所致)。

Toluenesulfonyl chloride: Tosyl chloride is corrosive, vesicant, lachrymator

甲苯磺醚氯：对甲苯磺醚氯是有腐蚀性的，发泡的，催瓦斯，受潮的和

Water, Cyclomethicone, Glycerin, Sd Alcohol 40-B (Alcohol Denat.), Propylene Glycol, Melia Azadirachta Leaf Extract, Lecithin, Arctium Lappa Root Extract, Xylitol, Lactitol, Alpha-Glucan Oligosaccharide, Lactoferrin, Potassium Thiocyanate, Glucose Pentaacetate, Glucose Oxidase, Lactoperoxidase, Glycoproteins, Panax Ginseng Root Extract, Equisetum Arvense Extract, Hydrolyzed Milk Protein, Peg-8, Caprylyl Glycol, Sebacic Acid, Sodium Polyacrylate, Betula Alba Bark Extract, Cupressus Sempervirens Leaf Extract, Hamamelis Virginiana Extract, Avena Sativa Meal Extract, Humulus Lupulus Extract, Silk, Nylon-12, Polyacrylamide, Polymethyl Methacrylate, Butylene Glycol, Salicylic Acid, Lauryl Methacrylate/Glycol Dimethacrylate Copolymer, Tocopheryl Acetate, C13-14 Isoparaffin, Laureth-7, Triethanolamine, Xanthan Gum, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Phenoxyethanol, Chlorphenesin, Benzoic Acid, Methylparaben, Fragrance, Titanium Dioxide

水，环甲硅脂，甘油，Sd Alcohol 40-B，丙二醇，印度楝树叶萃取，卵燐脂，牛蒡根萃取，木糖醇，乳糖醇，α-葡低聚糖，乳铁蛋白，硫氰酸钾，葡萄糖五乙酸酯，葡萄糖氧化酶，乳过氧化物酶，糖蛋白，人参根萃取，问荆萃取，水解牛奶蛋白，聚乙二醇-8，辛乙二醇，癸二酸，聚丙烯酸酯钠，白桦萃取，丝柏叶萃取，金缕梅萃取，燕麦萃取，啤酒花萃取，丝，尼龙－12，聚丙烯醯胺，聚甲基丙烯酸甲酯，丁二醇，水杨酸，甲基丙烯酸十二酯，醋酸盐维他命E，C13-14 异烷烃，月桂醇聚醚-7，三乙醇胺，山羊胶，丙烯酸/C10-30烷基丙烯酸聚合物，苯氧乙醇，氯苯甘醚，苯甲酸，羟苯甲酯，香料，二氧化钛

It was found that the chemical shift values of protons of the lariat ethers were changed with increase of their concentration. These results indicate that daisy chain-type polypseudorotaxanes were formed in concentrated solution.

结果表明冠醚中氢的化学位移随浓度的改变而变化，在浓溶液中侧臂冠醚单体通过超分子自组装形成了线性链状准聚轮烷。

This paper mainly studies effect and influence factor that typical corrosive medium (muriatic acid, vitriol, nitric acid, sodium hydroxide, sodium chloride etc.), consistence and condition temperature acts on the material coated on castiron centrifugal interface (PFEP, PPS, CPE, remodeled epoxy). It is studied that powder electrostatic spray, suspend fluid spray, suspend fluid electrophoresis underside coat etc. technics influences on coat quality coated with above four anticorrosive material. The property analysis is done that above four anticorrosive material and three coat technics adapt to centrifugal pump frame and running dynamic condition. In addition, the effect is introduced that castiron centrifugal coated anticorrosive material is used in coal water with alum.

本文侧重研究了典型腐蚀工作介质盐酸、硫酸、硝酸、氢氧化钠碱、氯化钠盐等品种、浓度、环境温度，对铸铁离心泵过流面的聚全氟乙丙烯、改性聚苯硫醚、改性氯化聚醚、改性环氧四种防腐涂层材料的试验使用效果和影响因素分析；研究了四种涂层材料粉末静电喷涂、悬浮液喷涂、悬浮液电泳底涂等涂装方法工艺对涂层质量的影响；四种涂层材料和三种涂装方法对离心泵结构和运行动态环境的适应性分析；介绍了铸铁离心泵防腐涂层在煤矿矾水中的应用效果。

The results of the experiments show that substituted aryl ethers that containing nitro group (-NO2) are easy to take place nucleophilic substitution in the alkaline medium and then aryl etherbond is cleaved.

实验结果表明，含-NO_2的取代芳基醚，在碱性溶液中，易发生亲核取代反应，从而使芳醚键断裂。

Result and Conclusion The optimal concentration of 2 nonyl 1,3 dioxolane for higher percutaneous absorption of diclofenac gel was 2.0%,suggesting that 2 nonyl 1,3 dioxolane is a potent penetration enhancer.

结果 壬代环戊双醚含量在2.0％时透皮吸收最好。结论壬代环戊双醚具有较好的促渗作用，是较好的新型促渗剂。

The cardanol glycidyl ether and nonyl phenyl glycidyl ether were synthesized by using cardanol and nonyl phenol as raw material respectively. The products structure and the structure of CGE/E51 and NGE/E51 cured system were characterized by FT-IR.

以腰果酚、壬基酚为原料制备了环氧树脂活性稀释剂腰果酚基缩水甘油醚和壬基苯基缩水甘油醚，对其结构及其与E51共混体系的固化物结构进行了红外光谱表征。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。