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The modified calcium sulphate whiskers were characterized with activation index,contact angle,SEM and IR spectrum analysis,and the results indicated that the borate surfactant SBW-181 has go...

建立了硼酸酯表面活性剂SBW-181与硫酸钙晶须的作用模型。得出的结论对硫酸钙晶须表面改性的工业化生产具有重要的指导意义，并为硫酸钙晶须的应用研究奠定了理论基础。

The borate surfactant SBW-181 was used for the modification experiments of calcium sulphate whiskers on the conditions of individual factors.

采用硼酸酯表面活性剂SBW-181对硫酸钙晶须进行了单因素条件改性试验，分别考察了改性剂用量、改性温度、改性时间和搅拌速率等工艺因素对硫酸钙晶须表面改性的影响。

Influences of the technical factors such as surfactant dosage,modification temperature/time and stirring speed on the surface modification of calcium sulphate whiskers were studied.

试验结果表明：硼酸酯表面活性剂SBW-181对硫酸钙晶须的改性效果较好，在最佳工艺条件下，改性产品的活化指数为0.996，接触角为103.4°。

Leather chemicals pavilion: surfactant, degreasing agents, disseminated dyes and chemical additives, fatliquor, metal complex dyes, coating materials, PU plastic, surface treatment agent, Wan Nengjiao, hardening agent, zinc stearate, Release agent, shoe adhesives, cleaning agents soles, resin curing agent RC, polyurethane products.

四、 皮革化工展区：表面活性剂、脱脂剂、浸染染料、化工助剂、加脂剂、金属络合染料、涂饰材料、PU胶、表面处理剂、万能胶、硬化剂、硬脂酸锌、脱模剂、制鞋胶粘剂、鞋底清洁剂、树脂固化剂RC、聚氨酯制品。

It is shown from the study that influence of co-use anionic and nonionic surfactants on the enzyme activity are less than single anionic surfactant Multi-component stabilizers are much better than single-component stabilizers for enzyme activity.

研究结果表明：阴离子表面活性剂与非离子或另一种阴离子表面活性剂复配后，对酶活性的影响明显小于单一阴离子表面活性剂的影响。多组分稳定剂比单组分稳定剂对改善酶的稳定作用好得多。

The drag-reducer used in the present test is cetyltrimethyl ammonium chloride surfactant combining with the same weight concentration sodium salicylate.

本次试验所用的减阻剂为十六烷基三甲基氯化铵表面活性剂，同时配以等质量浓度的水杨酸钠。

Biodegradation and degradation kinetics of anion-surfactant in the anaerobic water of a representative inlet of Lake Dianchi under different incubation conditions were studied by the'river die-away'test method.

LAS 的结构与生物降解性的关系[10 ，11 ] ；②利用驯化培养的高效菌株来降解废水中高浓度的LAS[12～14 ] ；③ LAS 在水处理系统中的生物降解[15～17 ] 。

Biodegradation and degradation kinetics of anion-surfactant in the anaerobic water of a representative inlet of Lake Dianchi under different incubation conditions were studied by the'river die-away'test method.

u SO6'Z#bW2N0表面活性剂是一类品种多样、用途广泛的精细化工产品，在人们的生产生活等很多领域中都有着不可替代的作用。经过50 多年的发展，特别是改革开放后20 多年的发展，我国表面活性剂工业发展迅速。

The synthetic technique of anionic surfactant sodium dodecyl diphenyl ether disulfonate was studied.The best reaction conditions were determined.Alkylation was carried out with n∶ n=5∶1 at 70 ℃ for 5 h to attain 82% yield.

研究了十二烷基二苯醚二磺酸钠阴离子表面活性剂的合成工艺，得出烷基化的最佳反应条件为：催化剂用量为n∶n =5∶1；反应时间 5h ；反应温度 70℃；二苯醚的转化率 82 %。

The present paper dealswith the preparation of surfactant (deoxycholic sodium and tetrabutylammonium bromidemixture) coat bonded to silica gelwith alkyls aswell as its application to the separation of chiral enantiomers.

提要： 研究脱氧胆酸钠和溴化四丁铵的混合态表面活性剂涂层烷基键合硅胶固定相的制备和它在手性对映体分离中的应用。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。