Wetting control

Advances in combustion technology now make it possible to control the levels of NOx production at source, removing the need for wet controls. This of course opened up the market for the gas turbine to operate in areas with limited supplies of suitable quality water, e.g., deserts or marine platforms. 

Prevention and Control Hardware Equipment and technology descriptions Dry and wet control hardware NO, control and application of pollution prevention technologies Flue gas scrubbing and control technologies Incineration and high temperature technologies... 

Wetting control carboxyl group [6], hydroxyl group [6], sulfonic acid [6], methyl group [6]... 

To produce pultruded products with consistent and high quality, it is important to tailor and control the pultrusion process. To achieve a uniform degree of cure in the cross-section of a product, control of the temperature profile inside the pultrusion die is an essential aspect. Also, to achieve consistent fibre wetting, controlled flow and pressure build-up must... 

In recent time, main attention was focused on the treatment of fiber surfaces, wetting control, and the penetration rate of fabrics by corresponding process solutions. According to [169], the imbibition of fabrics takes place as result of two processes a) a bulk imbibition, since the strands of yarn behave as an assembly of capillaries b) a surface rise due to the formation of surfactant adsorption layers. 

US Environmental Protection Agency (1994) Whole effluent toxicity (WET) control policy (EPA 833-B-94-002). US EPA, Washington, DC, p 241... 

The interfacial behavior of block copolymers is of interest in several fields like stabilization of emulsions, foams, and wetting control [154]. Gerdes et al. [155] studied the wetting behavior of aqueous solutions of triblock copolymers on silica. The experimental approach was based on the use of a Wilhelmy force balance and direct images of contact angle. Their results show that the three-phase contact line advances in jumps over the surface when it is immersed at constant speed into the copolymer solution. Apparently the stick-slip spreading mechanism is the same as has been proposed for short chain cationic surfactants. 

For many of the applications noted in Table 3.2, the desired properties will vary significantly. For that reason, such characteristics as solubility, surface tension reducing capability, critical micelle concentration (cmc), detergency power, wetting control, and foaming capacity may make a given surfactant perform well in some applications and less well in others. The universal surfactant that meets all of the varied needs of surfactant applications has yet to emerge from the industrial or academic laboratory. 

Uses Internal lubricant, wetting control agent used in plaster, plaster Joint compds., and ceramic formulations... 

Norfox Air Floated Soaps wetting control agent, plaster Norfox Air Floated Soaps wetting control agent, plaster joint compds. 

Some Practical Examples of Wetting Control by Surfactants... 

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