WebA con- sumer may indeed purchase the shampoo based on one or more of these claims, but the four attrbutes that come into plai y only during use, and that are rarely mentioned (and are most valued by consumers), are: cleansing, fragrance, viscosity and foaming. Cleansing:Cleansing is taken for granted by consumers. WebSolvents (i.e., viscosity leveler, freezing point depressant, foam booster) Fluoro Chemical surfactants ; Small amounts of salts ; Foam stabilizers (slow drainage, increases fire resistance) AFFF generated foams extinguish hydrocarbon flammable liquid fires the same way as the protein or fluoroprotein foams; however, there is an additional ...
Foam Stability - an overview ScienceDirect Topics
WebFoam viscosity is much higher than that of water or gas. Blauer et al. (1974) discussed the foam quality effect on the viscosity. Marfoe et al. (1987) proposed a semiempirical formula to calculate foam viscosity which is a function of gas velocity, gas fraction, surfactant … The suitable apparent viscosity of PAA resin with high concentration is an import… COMBUSTION IN POROUS MEDIA: FUNDAMENTALS AND APPLICATIONS. … Foam viscosity is also low because there is a lot of free fluid in the system, whic… Areas covered include steam and polymer flooding, use of foam, in situ combusti… WebFoam expansion* Low expansion foam up to 15 times Medium expansion foam up to 100 times Water drainage time* 25% / 50% Low expansion foam up to 5/8 minutes ... Viscosity 20 °C 0 °C Lowest use temp. ≤ 20 mm2/s ≤ 40 mm2/s ≤ 120 mm2/s ≤ 10 mm2/s ≤ 20 mm2/s ≤ 30 mm2/s Application chloe oracle
An experimental investigation of dynamic viscosity of foam at …
http://www.scientificspectator.com/documents/suggested%20reading/KLEIN%20ON%20EVALUATING%20FOAM.pdf WebT-STORM SFFF foam solution is effective on many deep-seated Class A fires such as tire, paper, coal, and structure fires. T-STORM SFFF foam concentrate can be proportioned from 0.1% to 1.0% in fresh, brackish, or sea water. Because of the extremely low proportioning rate, the foam concentrate offers outstanding economy in concentrate … WebHigh surface viscosity may form stable foam. 3. Solution viscosity. The addition of water-soluble polymer can increase solution viscosity and prolong the relaxation time of foam gravity unloading, the relaxation time of gas diffusion, and the half-life period of foam. 4. Pressure and bubble size distribution. grass valley golf course lake arrowhead